Disclosure of Invention
In order to solve the above-mentioned problems, it is an object of the present invention to provide an anchor delivery system, which is provided with a stroke adjustment mechanism for controlling the penetration length, so as to adjust the penetration length of the penetration needle into the tissue of the patient, and reduce the surgical damage and the surgical risk.
The second object of the invention is to provide an anchor conveying system, which has the advantages of more reasonable and simple structure, simple and convenient operation, less error and better reliability.
It is a further object of the present invention to provide an anchor delivery system with a locking structure to facilitate surgical procedures and reduce the risk of surgical mishandling.
The fourth object of the present invention is to provide an anchor delivery system having an instrument reset function that facilitates operation, such that the internal structure can be conveniently manually reset in the event of a structural stuck failure, to reduce the risk of surgical mishandling.
It is a fifth object of the present invention to provide an anchor delivery method for use in the anchor delivery system described above.
It is a sixth object of the present invention to provide a magazine for use in the anchor delivery system described above.
It is a seventh object of the present invention to provide a handle for the anchor delivery system described above.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A magazine for an anchor conveying system comprises a puncture needle tube, a push-pull tube, a puncture needle connecting piece, a push-pull mechanism and a stroke adjusting mechanism, wherein a puncture needle capable of moving forwards and backwards is arranged in the puncture needle tube in a penetrating mode, a suture capable of moving forwards and backwards is arranged in the puncture needle tube in a penetrating mode, the proximal end of the puncture needle tube is fixedly connected with the front end of a magazine body of the magazine, a shearing rod and a pushing rod capable of moving forwards and backwards are arranged in the push-pull tube in a penetrating mode, the proximal end of the push-pull tube is fixedly connected with the front end of the magazine body, the puncture needle connecting piece is arranged in the magazine body in a penetrating mode in a sliding mode, the front end of the puncture needle connecting piece is fixedly connected with the proximal end of the puncture needle, the pushing and shearing rod is used for driving the pushing rod to clamp and fix the suture, and the shearing rod is used for driving the knife blade to cut off the suture, and the stroke adjusting mechanism is arranged in the magazine body and used for blocking the puncture needle connecting piece to move forwards so as to control the puncture length. Therefore, the length of the puncture needle penetrating into the tissue of the patient can be conveniently and rapidly adjusted through the stroke adjusting mechanism, and surgical damage and surgical risks are reduced.
Preferably, the stroke adjusting mechanism comprises a stroke adjusting piece, the stroke adjusting piece is in threaded connection with the magazine box body through a threaded rod, the stroke adjusting piece is located in a chute of the magazine box body and can slide back and forth, the stroke adjusting piece is connected with a stroke adjusting cap outside the magazine box body through a threaded rod, the threaded rod is in threaded connection with the magazine box body, the stroke adjusting piece is sleeved at the rear end of the threaded rod, the stroke adjusting cap is installed at the front end of the threaded rod and can rotate the threaded rod, and the threaded rod is driven to rotate when the stroke adjusting cap rotates, so that the stroke adjusting piece is controlled to move back and forth.
Preferably, the stroke adjusting mechanism further comprises a buffer pin, the threaded rod is a hollow rod with a central hole, the threaded rod is sleeved on the buffer pin in a hollow mode, the rear end of the buffer pin extends out of the threaded rod and is endowed with a buffer trend through a spring, and the buffer pin can slide back and forth in the stroke adjusting piece and can be propped against the puncture needle connecting piece to limit.
Preferably, the stroke adjusting mechanism further comprises an in-place prompt cap, and the front end of the buffer pin extends out of the threaded rod and the stroke adjusting cap and is fixedly connected with the in-place prompt cap.
Preferably, the stroke adjusting mechanism further comprises a stroke scale rod, the front end of the stroke scale rod is axially fixed with the front part of the threaded rod and can rotate relatively, the rear end of the stroke scale rod penetrates through a through hole formed in the front end of the magazine body and then is connected with a stroke adjusting piece in the magazine body, scale marks corresponding to the puncture lengths are formed in the stroke scale rod, the stroke scale rod is formed by bending a metal rod, the front end of the stroke scale rod is bent into an annular ring, the annular ring is sleeved on the front part of the threaded rod, and a flange on the threaded rod is matched with the stroke adjusting cap to clamp and position the front end annular ring of the stroke scale rod.
Preferably, the pushing and shearing mechanism comprises a shearing part and a pushing part, wherein the shearing part is arranged in the box body of the magazine in a mode of being capable of sliding back and forth, the shearing part pulls the blade backwards through the shearing rod to complete the action of shearing a suture, the pushing part is arranged in the box body of the magazine in a mode of being capable of sliding back and forth, and the pushing part pushes the proximal anchoring piece forwards through the pushing rod.
Preferably, the proximal end of the suture is fixedly connected with the suture fixing seat, the suture fixing seat is arranged in the inner cavity of the puncture needle connecting piece, a guide rod penetrates through the inner cavity of the puncture needle connecting piece and can slide back and forth together with the suture fixing seat, a spring for giving the suture fixing seat a backward movement trend is sleeved on the guide rod, and a hook is arranged on the stroke adjusting piece and can be matched with a groove arranged on the guide rod, so that the guide rod is limited to move backward.
Preferably, the suture fixing seat is sleeved on the guide rod, one end of the spring abuts against the suture fixing seat and the guide rod, and the other end of the spring abuts against the puncture needle connecting piece.
A magazine for an anchor conveying system comprises a puncture needle tube, a push-pull tube, a puncture needle connecting piece, a shearing part, a pushing part, a limiting part and a limiting part, wherein the puncture needle tube is internally provided with a puncture needle capable of moving forwards and backwards, a suture capable of moving forwards and backwards is arranged in the puncture needle tube, the proximal end of the puncture needle tube is fixedly connected with the front end of a magazine body of the magazine, the push-pull tube is internally provided with a shearing rod and a pushing rod capable of moving forwards and backwards, the proximal end of the push-pull tube is fixedly connected with the front end of the magazine body, the puncture needle connecting piece is arranged in the magazine body in a mode of being capable of sliding forwards and backwards, the front end of the puncture needle connecting piece is fixedly connected with the proximal end of the puncture needle, the shearing part is arranged in the magazine body in a mode of being capable of sliding forwards and backwards, the shearing part pulls a blade to finish the shearing action through the shearing rod, the pushing part is arranged in the magazine body in a mode of being capable of sliding forwards and backwards, the pushing part forwards pushes a proximal anchor through the rod, the shearing part and the pushing part are arranged in the magazine body in the mode of being connected with the front end of the magazine body, the shearing part and the pushing part are connected with the front end of the magazine body, the supporting part and the shearing part and the two supporting parts are arranged at the two limiting positions are not in a limiting position, and a position for moving forwards and limiting part is opposite to the two supporting parts and a position for supporting part is located forwards and is not and capable of and limiting position and is located forwards and limiting part and is opposite to a position and supporting part and is moving. Therefore, the structure is more reasonable and simple in action, simple and convenient to operate, less prone to error and better in reliability.
Preferably, the middle part of the support is hinged to the body of the magazine by means of a hinge pin.
Preferably, a limit post is arranged below the front end of the support piece.
Preferably, the rear end of the supporting piece comprises a first limiting end and a second limiting end, the two limiting ends are in a V shape, the first limiting end is always blocked in front of the pushing component, and the pushing component can push the supporting piece to swing and limit when moving forwards.
Preferably, the pushing component and the shearing component slide along the same straight line, the tension spring is in a stretching state at all times, and the tension force released by the tension spring pulls the shearing component and the pushing component to each other.
Preferably, the magazine further comprises a push lock disposed in the magazine body and connected to the push member when the push lock is in the initial position such that the push member is locked and immovable.
Preferably, the pushing locking piece is provided with a clamping hook part, and the clamping hook part is matched and clamped with the clamping table part on the pushing component to realize limit locking.
Preferably, the push lock has a release portion, and the shear trigger lever on the handle releases the lock by pushing the release portion to move the push lock laterally.
A magazine for an anchor conveying system comprises a puncture needle tube, wherein a puncture needle capable of moving forwards and backwards is arranged in the puncture needle tube in a penetrating way, a suture capable of moving forwards and backwards is arranged in the puncture needle tube in a penetrating way, and the proximal end of the puncture needle tube is fixedly connected with the front end of a magazine body of the magazine; the device comprises a push-pull tube, a puncture needle connecting piece, a cutting component, a pushing component, a cutting component and a pushing component, wherein the cutting rod and the pushing rod which can move forwards and backwards are arranged in the push-pull tube in a penetrating way, the proximal end of the push-pull tube is fixedly connected with the front end of a box body of a magazine, the puncture needle connecting piece is arranged in the box body of the magazine in a mode of being capable of sliding forwards and backwards, the front end of the puncture needle connecting piece is fixedly connected with the proximal end of the puncture needle, the cutting component is arranged in the box body of the magazine in a mode of being capable of sliding forwards and backwards, the cutting component pulls a blade backwards through the cutting rod to cut a suture, the pushing component is arranged in the box body of the magazine in a mode of being capable of sliding forwards and backwards, the pushing component pushes the proximal end of the puncture needle connecting piece to each other through the pushing rod, three manual pushing buttons are respectively arranged outside the box body of the magazine in a sliding way, the first manual pushing buttons extend into the box body of the magazine and are fixedly connected with the puncture needle connecting piece, the second manual pushing buttons extend into the box body of the magazine and are fixedly connected with the cutting component, the manual pushing buttons extend into the box body and are fixedly connected with the manual pushing components. Thus, when the internal structure of the magazine has a jam, the manual push button outside the magazine shell can be moved to control the movement and the reset of the puncture needle connecting piece, the push component and the shearing component in the magazine.
Preferably, the magazine body is fixed with a cover plate, and the cover plate and the magazine body are fixedly connected through a fastening structure.
Preferably, three sliding grooves are formed in the cover plate, the three manual pushing buttons move back and forth along the three sliding grooves respectively, and the three manual pushing buttons are fixedly connected with the puncture needle connecting piece, the shearing component or the pushing component through buckling structures respectively.
Preferably, the cover plate is provided with a locking push button seat and a locking push button, the locking push button seat is fixedly connected with the cover plate or integrally formed, the locking push button is installed on the cover plate in a slidable mode, the locking push button seat and the locking push button are propped against each other through a pressure spring, so that the locking push button is endowed with an ejection trend, and the locking push button is fixedly connected with the magazine box body through a buckle structure during ejection. Therefore, when external force is applied to the locking push button, the buckling structure of the locking push button is retracted, the magazine can be loaded into the magazine bin of the handle, the external force applied to the locking push button is removed, the locking push button is locked into the handle under the action of the pressure spring, the magazine loading is completed at the moment, and the puncture needle connecting piece is matched and fixed with the energy storage sliding block.
Preferably, the proximal end of the suture is fixedly connected with a suture holder, the suture holder is mounted on the puncture needle connector in a manner capable of sliding back and forth, and the distal end of the suture is fixedly connected with the distal anchor.
Preferably, the distal end of the puncture needle tube is fixed with a head end part, an arc-shaped channel communicated with the distal end of the puncture needle tube is arranged in the head end part, the distal end of the push-pull tube is connected with the head end part, and a proximal anchoring piece capable of moving back and forth and being separated is arranged in a distal end opening of the push-pull tube.
Preferably, the shearing component is fixedly connected with the proximal end of the shearing rod, the distal end of the shearing rod is connected with the blade, and the shearing rod is driven by the shearing component to pull the blade backwards to complete the shearing action.
Preferably, the endoscope also comprises a supporting tube, the cross section of the supporting tube is semicircular and is matched with the endoscope tube, and the upper side and the lower side of the supporting tube are respectively used for fixedly connecting the puncture needle tube and the push-pull tube.
An anchor delivery system comprising a magazine for an anchor delivery system as described above.
A handle for an anchor delivery system includes an energy storage slide slidably disposed within a handle housing and connected for movement in synchronism with a needle connector in a magazine, the energy storage slide being connected to the handle housing by an energy storage spring to be biased in a forward movement, the energy storage slide being connected to the handle housing by a detent mechanism to be restrained from movement in a forward movement, the detent mechanism being deactivated when the energy storage slide is moved in a rearward position to thereby rapidly move the energy storage slide in a forward movement under the influence of the energy storage spring, a trigger member slidably disposed within the handle housing, the trigger member being biased in a forward movement by a trigger spring to be biased in a forward movement, the trigger member being connected to or disconnected from a sliding pusher by a clutch mechanism to thereby drive the energy storage slide in a rearward movement when the trigger member is connected to the energy storage slide, and not being biased to move when the trigger member is moved in a rearward position. Therefore, the structure is more reasonable and simple in action, simple and convenient to operate, less prone to error and better in reliability.
Preferably, the clutch structure comprises a sliding push block which is arranged on the trigger component and can slide up and down, the sliding push block can be connected with or separated from the energy storage slide block, when the sliding push block is connected with the energy storage slide block, the trigger component can drive the energy storage slide block to move backwards, and when the trigger component moves backwards to a proper position, the sliding push block is separated from the energy storage slide block, and the trigger component cannot drive the energy storage slide block to move.
Preferably, the sliding pushing block is connected with the trigger component through a spring, and in a natural state, the sliding pushing block is in an ejection state under the action of spring force, so that the sliding pushing block can be connected with the energy storage sliding block.
Preferably, when the trigger member is moved rearwardly into position, the sliding push block moves downwardly against a ramp boss on the first stop member to disengage from the accumulator slide.
Preferably, the pawl mechanism comprises a holding block, a locking slide block and a connecting rod, wherein the holding block and the locking slide block are respectively arranged on the energy storage slide block in a sliding mode, one end of the holding block is hinged with one end of the connecting rod, the other end of the connecting rod is hinged with one end of the locking slide block, the other end of the locking slide block can be ejected or retracted, when the locking slide block is ejected, the locking slide block can be matched with a ratchet on the first limiting piece to limit the energy storage slide block to move forwards, when the locking slide block is retracted, the pawl mechanism is invalid, the holding block is connected with the energy storage slide block through a holding spring so that the holding block gives the trend of holding the locking slide block to be ejected or retracted, and the first limiting piece is fixedly connected with or integrally formed with the handle shell.
Preferably, the retaining block is mounted on the energy storage slide block in a mode of being capable of sliding back and forth, the locking slide block is mounted on the energy storage slide block in a mode of being capable of sliding up and down, the lower end of the locking slide block can be ejected or retracted, and in an initial state, the retaining block pushes the connecting rod to pivot to push the locking slide block to move downwards, so that the locking slide block is located and kept at an ejection position.
Preferably, the locking slide block and the connecting rod are hinged through a hinge pin, one end of the hinge pin extends into a sliding groove on the handle shell, the rear end of the sliding groove is provided with a lifting slope, the sliding groove is lifted when the hinge pin moves backwards, the locking slide block is kept in a retracted state, the front part of the sliding groove is provided with a descending slope, the sliding groove is pressed down when the hinge pin moves forwards, and the locking slide block is kept in an ejection state.
Preferably, the descent ramp is integrally formed on a travel regulator in the magazine.
A handle for an anchor delivery system includes an energy storage slide slidably disposed within a handle housing and movable in synchronism with a needle connector in a magazine, the energy storage slide being connected to the handle housing by an energy storage spring to impart a forward movement tendency, a trigger member slidably disposed within the handle housing and imparted a forward movement tendency by the trigger spring, a lock slidably disposed within the handle housing up and down, the lock having a locked position and an unlocked position, the lock being operable to limit rearward movement of the trigger member, the detent mechanism of the energy storage slide being operable to limit forward movement thereof, the trigger member being operable to move rearward to cause the detent mechanism of the energy storage slide to fail when the lock is in the unlocked position, and the slide pusher being disengaged from the energy storage slide. Thus, the puncture is implemented by arranging the locking piece to be matched with the trigger component, the misoperation risk of single component firing of the trigger is avoided, the operation is convenient, and the reliability is good.
Preferably, the handle shell comprises a lower shell and an upper shell which are fixedly connected into a whole, a magazine bin for placing a magazine is arranged on the upper shell, a chute for a connecting column to pass through is formed in the upper shell, and the energy storage sliding block is connected with the puncture needle connecting piece through the connecting column so as to realize synchronous movement.
Preferably, the trigger component is matched with sliding grooves on the lower shell and the upper shell through sliding tables arranged on the left side and the right side to realize front-back sliding, the trigger spring is a tension spring, the tension spring is arranged in a through hole of the trigger component in a penetrating mode, and two ends of the tension spring are connected with the trigger component and the handle shell through connecting pins respectively.
The locking piece is connected with the lower shell through a spring to enable the locking piece to be provided with a locking boss for limiting the trigger component to move backwards, the locking boss is arranged in a protruding mode, an unlocking pin capable of sliding forwards and backwards is installed on the locking piece, the unlocking pin is pushed out forwards against the locking piece through a pressure spring, when the unlocking pin is pushed out forwards and inserted into a limiting groove on the second limiting piece, the locking piece is in a locking position, the locking boss can be pushed out against a protruding part at the rear end of the trigger component to limit the trigger component to move backwards, when the unlocking pin is pushed out forwards and is pushed against a limiting protrusion on the second limiting piece, the locking piece is in an unlocking position, the locking boss is staggered upwards and downwards with the protruding part at the rear end of the trigger component to prevent the trigger component from moving backwards, when the trigger component continues to move backwards to be in place, the unlocking pin is pushed back, the locking piece moves upwards under the action of the spring to be reset to the locking position, the second limiting piece is fixedly connected with the lower shell or integrally formed, and the locking piece is located in the locking position in an initial state. Therefore, the unlocking piece is pressed to unlock, the trigger component is used for triggering puncture and simultaneously pushing the unlocking pin back to realize re-locking, and the misoperation risk of re-puncture is avoided.
Preferably, the limiting groove and the limiting protrusion on the second limiting piece are arranged up and down and are in slope transition.
Preferably, the device is further provided with a cutting trigger rod and an elastic limiting piece, wherein the cutting trigger rod is arranged in the handle shell in a manner of being capable of sliding up and down, the cutting trigger rod is fixedly connected with a cutting push button which is arranged outside the handle shell in a sliding manner, the elastic limiting piece is used for locking the cutting trigger rod to prevent the cutting trigger rod from moving up and down, when the trigger component moves backwards in place, the elastic limiting piece is pushed to unlock, so that the cutting trigger rod can move up and down, the cutting trigger rod can realize the left and right movement of the pushing locking piece by pushing a release part on the pushing locking piece, the pushing component is unlocked, and the pushing cutting mechanism clamps and cuts a suture. In this way, the push-shear mechanism can only be actuated after the trigger member is moved back into place, ensuring that the distal anchor is released and the suture is tensioned to clamp and sever the suture, avoiding the risk of surgical mishandling.
Preferably, through holes through which the shearing trigger rod passes are formed in the handle shell and the magazine body, the upper part of the shearing trigger rod is U-shaped, one end of the upper part of the shearing trigger rod penetrates through the through holes and stretches into the magazine to unlock and push the locking piece, the other end of the upper part of the shearing trigger rod is matched with the locking piece to limit, the locking piece can limit the shearing trigger rod to move upwards when the locking piece is in the unlocking position, and the shearing trigger rod is not limited when the locking piece is in the locking position. Therefore, the pushing and shearing mechanism can only act when the locking piece is locked, and the surgical risk caused by misoperation of the pushing and shearing mechanism during puncture is avoided.
Preferably, the shearing trigger rod is arranged in a chute formed by the upper shell and the lower shell and can slide up and down, the shearing trigger rod is connected with the shearing push button through a buckling structure, the elastic limiting piece is an elastic stop bar, the elastic stop bar is in a V shape, one end of the elastic stop bar is fixed in a clamping groove of the lower shell, the other end of the elastic stop bar is inserted into the clamping groove on the shearing trigger rod, when the shearing trigger rod is positioned at an initial position, the elastic stop bar is contacted with a boss of the lower shell to lock the shearing trigger rod and cannot move, when the trigger part moves backward in place, the elastic stop bar is compressed, the other end of the elastic stop bar withdraws from the clamping groove on the shearing trigger rod, and the shearing trigger rod can move up and down.
An anchor delivery system employing a handle for an anchor delivery system as described above.
An anchor delivery system includes a handle and a magazine. The magazine comprises a puncture needle tube, a push-pull rod, a push-pull mechanism and a push-pull mechanism, wherein a puncture needle capable of moving forwards and backwards is arranged in the puncture needle tube in a penetrating manner, the proximal end of the puncture needle tube is fixedly connected with the front end of a magazine body of the magazine, a shearing rod and the push rod capable of moving forwards and backwards are arranged in the push-pull tube in a penetrating manner, the proximal end of the push-pull tube is fixedly connected with the front end of the push-pull tube, the distal end of the push-pull tube is fixedly connected with the front end of the head body of the puncture needle, a puncture needle connecting piece is fixedly connected with the front end of the puncture needle connecting piece, a suture capable of moving forwards and backwards is arranged in the puncture needle, the proximal end of the suture is fixedly connected with a suture fixing seat, the suture fixing seat is arranged on the puncture needle connecting piece in a mode capable of sliding forwards and backwards, the distal end of the suture is fixedly connected with the distal end anchoring piece, and the push-pull rod is used for driving the push-pull rod to push the proximal anchoring piece to clamp the suture and the shearing rod to drive the shearing blade to cut off. The handle comprises an energy storage slide block, a trigger component and a trigger post, wherein the energy storage slide block is arranged in a handle shell in a mode of being capable of sliding back and forth and synchronously moves with a puncture needle connecting piece in the trigger box, the energy storage slide block is connected with the handle shell through an energy storage spring so as to enable the energy storage slide block to be endowed with a forward movement trend, the energy storage slide block is connected with the handle shell through a pawl mechanism so as to be limited to move forward, when the energy storage slide block moves backward in place, the pawl mechanism is invalid, the energy storage slide block is enabled to move forward rapidly under the action of the energy storage spring, the trigger component is arranged in the handle shell in a mode of being capable of sliding back and forth, the trigger component is endowed with a forward movement trend through the trigger spring, the trigger component is provided with a sliding push block capable of sliding up and down, the sliding push block can be connected with the energy storage slide block or separated from the sliding push block, when the sliding push block is connected with the energy storage slide block, the trigger component can drive the energy storage slide block to move backward, when the trigger component moves backward in place, the trigger component is separated from the energy storage slide block, the energy storage slide block cannot drive the energy storage slide block, a magazine bin for placing the trigger box is arranged on the handle shell, the trigger box magazine is arranged on the handle shell, the detachable, the trigger box is connected with the handle shell, and the puncture needle connecting piece is connected with the puncture needle connecting piece in a sliding post.
The pushing and shearing mechanism comprises a shearing component, a pushing component and a supporting component, wherein the shearing component is arranged in a box body of a magazine in a mode of being capable of sliding back and forth, the shearing component is fixedly connected with the proximal end of a shearing rod, the distal end of the shearing rod is connected with a blade, the shearing rod pulls the blade backwards under the driving of the shearing component to complete shearing action, the pushing component is arranged in the box body of the magazine in a mode of being capable of sliding back and forth, the pushing component is fixedly connected with the proximal end of the pushing component, the pushing component pushes a proximal anchor forward under the driving of the pushing component, the shearing component and the pushing component are arranged back and forth and are connected through a tension spring to pull the shearing component and the pushing component to each other, the supporting component is arranged between the shearing component and the pushing component, the front end and the rear end of the supporting component can move and have two positions, the supporting component is in a first position, the front end of the supporting component moves backwards to limit the shearing component, the rear end of the supporting component does not limit the pushing component, the supporting component does not limit the front end of the supporting component, and the supporting component moves forwards, and the supporting component does not limit the supporting component to the supporting component in a second position.
Preferably, the push shear mechanism further comprises a push lock disposed within the magazine, the push lock being connected to the push member when in the initial position such that the push member is locked and immovable.
Preferably, the push locking piece is provided with a clamping hook part which is matched and clamped with the clamping table part on the push component to realize limit locking, and the push locking piece is also provided with a release part, and a shearing trigger rod on the handle can push the release part to realize left and right movement of the push locking piece so as to unlock the push component and fix and cut off the suture.
Preferably, the shear trigger rod is arranged in the handle shell in a manner of being capable of sliding up and down, the shear trigger rod is fixedly connected with a shear push button which is arranged outside the handle shell in a sliding manner, the elastic limiting piece is used for locking the shear trigger rod to prevent the shear trigger rod from moving up and down, the elastic limiting piece is pushed to unlock when the trigger component moves backward in place, so that the shear trigger rod can move up and down, the shear trigger rod can move left and right by pushing a release part on the push locking piece, the push component is unlocked by pushing the push locking piece, and the push shearing mechanism clamps and cuts off a suture.
The puncture needle connecting piece is arranged in the magazine box body, the puncture needle connecting piece is prevented from moving forwards, the puncture needle connecting piece is arranged in the magazine box body, the puncture needle connecting piece is used for preventing a puncture needle connecting piece from moving forwards, the puncture needle connecting piece is arranged in the magazine box body, the puncture needle connecting piece is used for preventing the puncture needle connecting piece from moving forwards, and can be rotated, the puncture needle connecting piece is used for controlling the puncture needle connecting piece from moving forwards, and used for controlling the puncture needle connecting piece.
Preferably, the pawl mechanism comprises a retaining block, a locking slide block and a connecting rod, wherein the retaining block and the locking slide block are respectively arranged on the energy storage slide block in a sliding mode, one end of the retaining block is hinged with one end of the connecting rod, the other end of the connecting rod is hinged with one end of the locking slide block, the other end of the locking slide block can be ejected or retracted, when the locking slide block is ejected, the locking slide block can be matched with a ratchet on the first limiting piece to limit the energy storage slide block to move forwards, when the locking slide block is retracted, the pawl mechanism is out of order, and the retaining block is connected with the energy storage slide block through a retaining spring so that the retaining block can enable the locking slide block to keep ejecting or retracting.
Preferably, the locking slide block and the connecting rod are hinged through a hinge pin, one end of the hinge pin extends into a sliding groove on the handle shell, the sliding groove is arranged on the upper shell or the lower shell of the handle, the rear end of the sliding groove is provided with a lifting slope, the sliding groove is lifted when the hinge pin moves backwards, the locking slide block is kept in a retracted state, the front part of the sliding groove is provided with a descending slope which is formed on the stroke adjusting piece, and the sliding groove is pressed down when the hinge pin moves forwards, so that the locking slide block is kept in an ejection state.
Preferably, the cover plate of the magazine is provided with a locking push button seat and a locking push button, the locking push button seat is fixedly connected with the cover plate or integrally formed, the locking push button is installed on the cover plate in a slidable mode, the locking push button seat and the locking push button are propped against each other through a pressure spring, so that the locking push button is endowed with an ejection trend, and the locking push button is fixedly connected with the magazine body through a buckle structure during ejection.
An anchor delivery method employing an anchor delivery system as described above.
Due to the adoption of the technical scheme, the invention is provided with the travel adjusting mechanism for controlling the puncture length, so that the length of the puncture needle which is inserted into the tissue of a patient can be conveniently adjusted, and the surgical damage and the surgical risk are reduced. The locking structure is arranged, so that the operation is convenient, and the risk of misoperation of the operation is reduced. The instrument reset function convenient to operate is provided, so that when the structure is blocked and invalid, the internal structure can be conveniently reset manually, and the risk of misoperation of the operation is reduced. The device has the advantages of more reasonable and simple structure action, simple and convenient operation, less error and better reliability.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise, and furthermore it is to be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
For convenience of description, the present invention is divided into left and right with the left side of fig. 1 as front, the right side as rear, the upper side as upper, the lower side as lower, and the other two sides in the vertical front-rear direction. The surgical end of the instrument is taken as a distal end, and the operational end of the instrument is taken as a proximal end.
Examples
An anchor delivery system as shown in fig. 1 includes a handle 100 and a magazine 200, the magazine 200 being removably mounted to the handle 100, the handle 100 transmitting mechanical energy stored by itself into the magazine 200 for delivery of an implant to a patient.
The magazine 200 shown in fig. 3 includes:
A puncture needle tube 224, wherein a puncture needle 221 capable of moving back and forth is penetrated in the puncture needle tube 224, the proximal end of the puncture needle tube 224 is fixedly connected with the front end of the box body of the magazine, and the distal end of the puncture needle tube 224 is fixedly connected with a head end part 222;
A push-pull tube 225, wherein a shear bar 228 and a push bar 227 capable of moving back and forth are arranged in the push-pull tube 225 in a penetrating way, the proximal end of the push-pull tube 225 is fixedly connected with the front end of the magazine body, a proximal anchor 400 capable of moving back and forth and being separated is arranged in the distal opening of the push-pull tube 225, and the distal end of the push-pull tube 225 is fixedly connected with the head end part 222;
A puncture needle connecting piece 208, the front part of the puncture needle connecting piece 208 is fixedly connected with the proximal end of the puncture needle 221, a suture 500 capable of moving back and forth is penetrated in the puncture needle 221, the proximal end of the suture 500 is fixedly connected with a suture fixing seat 211, the suture fixing seat 211 is arranged on the puncture needle connecting piece 208 in a manner of being capable of sliding back and forth, and the distal end of the suture 500 is fixedly connected with a distal anchor 300;
the shearing component 212 is arranged in the box body of the magazine in a mode of being capable of sliding back and forth, the shearing component 212 is fixedly connected with the proximal end of the shearing rod 228, the distal end of the shearing rod 228 is connected with the blade 223, and the shearing rod 228 pulls the blade 223 backwards under the drive of the shearing component 212 to complete the shearing action;
A pushing member 213, the pushing member 213 is slidably mounted in the magazine body, the pushing member 213 is fixedly connected to the proximal end of the pushing rod 227, the pushing rod 227 is driven by the pushing member 213 to push the proximal anchor 400 forward, and the shearing member 212 and the pushing member 213 are disposed in front of each other and connected to each other by a tension spring 233;
The support 214 is arranged between the shearing member 212 and the pushing member 213, and the front end and the rear end of the support 214 are movable and have two positions, namely, when the support 214 is in the first position, the front end of the support 214 limits the backward movement of the shearing member 212, the rear end of the support 214 does not limit the pushing member 213, and when the support 214 is in the second position, the rear end of the support 214 limits the forward movement of the pushing member 213, and the front end of the support 214 does not limit the shearing member 212.
As shown in fig. 7, the endoscope further comprises a support tube 226 which is semicircular in cross section and is used for being matched with the endoscope tube, and the upper side and the lower side of the support tube are respectively used for fixedly connecting the puncture needle tube 224 and the push-pull tube 225. The head end part 222 is provided with an arc-shaped channel communicated with the distal end of the puncture needle tube 224 so that the puncture needle 221 extends out from one side of the puncture needle after being bent to puncture.
The present embodiment preferably further includes a travel adjustment mechanism mounted within the magazine for blocking forward movement of the lancet connector 208 to control the length of the puncture.
In this embodiment, as shown in fig. 9 and 16, the stroke adjusting mechanism includes a stroke adjusting member 209, where the stroke adjusting member 209 is located in a chute of the magazine case and can slide back and forth, the stroke adjusting member 209 is connected with a stroke adjusting cap 204 outside the magazine case through a threaded rod 205, the threaded rod 205 is in threaded connection with the magazine case, the stroke adjusting member 209 is sleeved at the rear end of the threaded rod 205, the stroke adjusting cap 204 is installed at the front end of the threaded rod 205 and can rotate the threaded rod 205, and when the stroke adjusting cap 204 rotates, the threaded rod 205 is driven to rotate, so as to control the stroke adjusting member 209 to move back and forth along the threaded rod 205. Therefore, the blocking position of the travel adjusting piece to the puncture needle connecting piece can be adjusted by rotating the threaded rod, so that the puncture length is adjusted, and the puncture needle connecting piece is simple in structure and convenient to adjust.
Still preferably, the stroke adjustment mechanism further comprises a buffer pin 206 and an in-place prompt cap 203, the threaded rod 205 is a hollow rod with a central hole, the threaded rod 205 is sleeved on the buffer pin 206 in a hollow mode, the front end of the buffer pin 206 extends out of the threaded rod 205 and the stroke adjustment cap 204 and then is fixedly connected with the in-place prompt cap 203, the rear end of the buffer pin 206 extends out of the threaded rod 205 and is endowed with a buffering trend through a spring, and the buffer pin 206 can slide back and forth in the stroke adjustment piece 209 and can abut against a limiting boss 2083 on the puncture needle connecting piece 208. Thus, when the puncture needle connector moves forwards, the buffer pin is impacted and completely pushed into the stroke adjusting piece, and then sliding is stopped, and meanwhile, the buffer pin pushes out the in-place prompt cap. Not only can cushion spacing to the pjncture needle connecting piece through the buffer pin, but also be convenient for the doctor through the suggestion cap that targets in place still judge whether the puncture is successful fast.
Further preferably, the stroke adjusting mechanism further comprises a stroke scale rod 207, the front end of the stroke scale rod 207 is axially fixed with the front part of the threaded rod 205 and can rotate relatively, the rear end of the stroke scale rod 207 passes through a through hole formed at the front end of the magazine body and then is connected with a stroke adjusting piece 209 in the magazine body, and scale marks corresponding to the puncture lengths are arranged on the stroke scale rod 207. Therefore, when the threaded rod moves forwards and backwards, the travel scale screw rod moves along with the movement display scale, so that the device is simple and visual, and the puncture length can be conveniently and quickly adjusted.
In this embodiment, the stroke scale bar 207 is formed by bending a metal bar, the front end of the stroke scale bar is bent into an annular ring, the annular ring is sleeved on the front portion of the threaded rod 205, and the flange on the threaded rod 205 cooperates with the stroke adjusting cap 204 to clamp and position the front end annular ring of the stroke scale bar 207.
In this embodiment, as shown in fig. 4 and 5, the suture fixing seat 211 is installed in the cavity of the puncture needle connector 208, a guide rod 210 passes through the cavity of the puncture needle connector 208 and can slide back and forth together with the suture fixing seat 211, and a spring 232 for giving a backward movement trend to the suture fixing seat 211 is sleeved on the guide rod 210. The suture fixing seat 211 is sleeved on the guide rod 210. One end of the spring 232 abuts against the suture fixing seat 211 and the guide rod 210, and the other end of the spring 232 abuts against the puncture needle connector 208. The stroke adjusting member 209 is provided with a hook 2091, and the hook 2091 is capable of engaging with a groove 2101 provided on the guide bar 210, thereby restricting the rearward movement of the guide bar 210. Therefore, after the puncture needle is released and the puncture is completed, the guide rod and the suture fixing seat are limited by the hook to move backwards along with the puncture needle connecting piece, so that the distal anchoring piece can be ensured to be released from the distal end of the puncture needle, and the suture can be effectively tensioned by arranging the spring, so that the proximal anchoring piece can be released conveniently.
In this embodiment, a suture support tube 231 is attached to the proximal end of the suture 500 to facilitate the push-pull movement of the suture and its attachment to the suture holder. The suture supporting tube is fixed on the suture fixing seat, and the suture supporting tube is in crimping fixation with the suture.
The cutting member 212, pushing member 213, support 214 and their connection form a pushing and cutting mechanism for driving the pushing rod 227 to push the proximal anchor 400 to clamp the suture and for driving the cutting rod 228 to drive the blade 223 to cut the suture.
In this embodiment, as shown in fig. 9 and 19, the middle portion of the support 214 is preferably hinged to the magazine body of the magazine by a hinge pin 230. A limiting post 2144 is provided below the front end 2141 of the support 214 to prevent over-pivoting of the support 214, and a compression spring may be provided between the support and the cartridge to urge the support 214 back to the first position. The rear end of the supporting member 214 includes a first limiting end 2142 and a second limiting end 2143, where the two limiting ends are V-shaped, and the first limiting end 2142 is always blocked in front of the pushing member 213, so that the pushing member 213 can timely push the supporting member 214 to swing and implement limiting when moving forward.
In this embodiment, support 214 has an engaged position with shear member 212 such that support 214 is capable of preventing shear member 212 from sliding toward pushing member 213, and a disengaged position from shear member 212 such that support 214 allows shear member 212 to slide toward pushing member 213. The push member 213 is configured to slide into contact with the support 214 and pivot the support 214 out of engagement with the shear member 212.
Further preferably, the pushing member 213 and the shearing member 212 slide along the same line, and the tension spring 233 is in a stretched state at a time, and the tension released by the tension spring 233 pulls the shearing member 212 and the pushing member 213 toward each other.
The push shear mechanism further comprises a push lock 215 disposed within the magazine, which is coupled to the push member 213 when the push lock 215 is in the initial position such that the push member 213 is locked and not movable.
The pushing locking piece can be various parts or structures with locking functions, such as a locking pin, a locking key and the like.
In this embodiment, as shown in fig. 18, the pushing locking member 215 has a hook 2151, and the hook 2151 cooperates with a clamping portion on the pushing member 213 to implement limit locking. The push lock 215 further has a release portion 2152, and the shear trigger lever 113 on the handle pushes the release portion 2152 to move the push lock 215 laterally, thereby unlocking the push member 213 and performing suture fixation and cutting.
In this embodiment, three manual pushing buttons are slidably disposed outside the magazine, a first manual pushing button 216 extends into the magazine and is fixedly connected to the lancet connector 208, a second manual pushing button 217 extends into the magazine and is fixedly connected to the cutting member 212, and a third manual pushing button 218 extends into the magazine and is fixedly connected to the pushing member 213. In this way, the movement of the lancet connector, the pushing member and the cutting member within the magazine can be controlled by moving a manual knob outside the magazine housing when a jam occurs in the internal structure of the magazine.
In this embodiment, preferably, the magazine body 201 is fixed with a cover plate 202, and the cover plate and the magazine body are fixedly connected through a fastening structure. Three sliding grooves are formed in the cover plate 202, three manual pushing buttons move back and forth along the three sliding grooves respectively, and the three manual pushing buttons are fixedly connected with the puncture needle connecting piece, the shearing component or the pushing component 213 through a buckling structure respectively.
The handle 100 as shown in fig. 2 includes:
The energy storage slide block 106 is arranged in the handle shell in a manner of being capable of sliding back and forth and synchronously moves with the puncture needle connecting piece 208 in the magazine, the energy storage slide block 106 is connected with the handle shell through the energy storage spring 119 so as to be endowed with a forward movement trend, the energy storage slide block 106 is connected with the handle shell through the pawl mechanism so as to be limited to move forward, and when the energy storage slide block 106 moves backward in place, the pawl mechanism is disabled, so that the energy storage slide block 106 moves forward rapidly under the action of the energy storage spring;
The trigger part 103 is arranged in the handle shell in a mode of being capable of sliding back and forth, the trigger part 103 is endowed with a forward movement trend through a trigger spring 125, the trigger part 103 is provided with a sliding push block 104 capable of sliding up and down, the sliding push block 104 can be connected with or separated from the energy storage slide block 106, when the sliding push block 104 is connected with the energy storage slide block 106, the trigger part 103 can drive the energy storage slide block 106 to move backwards, when the trigger part 103 moves backwards to a proper position, the sliding push block 104 is separated from the energy storage slide block 106, and the trigger part 103 cannot drive the energy storage slide block 106 to move;
A locking member 111, the locking member 111 being slidably disposed within the handle housing, the locking member 111 having a locked position and an unlocked position, the locking member 111 being capable of restricting rearward movement of the trigger member 103 and thereby restricting forward movement of the pawl mechanism of the accumulator slide 106 when the locking member 111 is in the locked position, and the trigger member 103 being capable of rearward movement and thereby causing the pawl mechanism of the accumulator slide 106 to fail and the sliding pusher 104 to disengage from the accumulator slide 106 when the locking member 111 is in the unlocked position.
Thus, the puncture is implemented by arranging the locking piece to be matched with the trigger component, the misoperation risk of single component firing of the trigger is avoided, the operation is convenient, and the reliability is good.
In this embodiment, the handle housing preferably includes a lower housing 101 and an upper housing 102 that are fixedly connected together, and a magazine for holding a magazine is disposed on the upper housing 102. The upper shell 102 and the magazine are provided with a chute for the connecting column 2082 of the puncture needle connecting piece 208 to pass through, and the connecting column 2082 is connected with the slot of the energy storage slide block 106 in a matched manner, so that the puncture needle connecting piece 208 and the energy storage slide block 106 can synchronously move.
An endoscope connecting member 122 and an endoscope locking member 123 are provided at front and rear ends of the handle housing, respectively, for connecting an endoscope.
In this embodiment, preferably, the cover 202 of the magazine is provided with a locking push button seat 219 and a locking push button 220, the locking push button seat 219 is fixedly connected with the cover 202 or integrally formed, the locking push button 220 is slidably mounted on the cover 202, the locking push button seat 219 and the locking push button 220 are abutted against each other by a pressure spring 229, so that the locking push button 220 is given an ejection trend, and the locking push button is fixedly connected with the magazine body 201 by a fastening structure during ejection. Therefore, when external force is applied to the locking push button, the buckling structure of the locking push button is retracted, the magazine can be loaded into the magazine bin of the handle, the external force applied to the locking push button is removed, the locking push button is locked into the handle under the action of the pressure spring, the magazine loading is completed at the moment, and the puncture needle connecting piece is matched and fixed with the energy storage sliding block.
In this embodiment, the sliding pushing block 104 is preferably connected to the trigger component 103 through a compression spring 117, and in a natural state, the sliding pushing block 104 is in an ejection state under the thrust of the compression spring, so that it can be connected to the energy storage slider 106. In other embodiments, the sliding push block may also be coupled to the trigger member by a tension spring or the like.
In this embodiment, preferably, a guiding shaft 105 is fixed on the lower housing 101, the energy storage slider 106 is sleeved on the guiding shaft 105 and can slide back and forth along the guiding shaft 105, and the energy storage spring 119 is a pressure spring sleeved on the guiding shaft 105. In other embodiments, the energy storage spring may also be a tension spring.
In this embodiment, preferably, the trigger component 103 is matched with the sliding grooves on the lower casing 101 and the upper casing 102 through sliding tables arranged on the left side and the right side to realize front-back sliding, the trigger spring 125 is a tension spring, the tension spring is arranged in the through hole of the trigger component 103 in a penetrating manner, and two ends of the tension spring are respectively connected with the trigger component and the handle casing through connecting pins. In other embodiments, the trigger spring may also be a compression spring.
Preferably, the pawl mechanism comprises a holding block 107, a locking slide 108 and a connecting rod 109, wherein the holding block 107 and the locking slide 108 are respectively arranged on the energy storage slide 106 in a sliding manner, one end of the holding block 107 is hinged with one end of the connecting rod 109, the other end of the connecting rod 109 is hinged with one end of the locking slide 108, the other end of the locking slide 108 can be ejected or retracted, when the locking slide 108 is ejected, the pawl mechanism can be matched with a ratchet on a first limit piece 1011 to limit the energy storage slide 106 to move forwards, when the locking slide 108 is retracted, the pawl mechanism is disabled, the holding block 107 is connected with the energy storage slide 106 through a holding spring 118, and thus the holding block 107 is endowed with the trend of ejecting or retracting the locking slide 108. Therefore, the structure is simple and reasonable, the reliability of the unidirectional stepping movement of the energy storage sliding block is high, and the release is convenient.
Further preferably, the holding block 107 is slidably mounted to the accumulator slide 106, the lock slide 108 is slidably mounted to the accumulator slide 106, and the lower end of the lock slide 108 is capable of being pushed out or retracted. In other embodiments, the locking slide block can be ejected out from the upper part or the left side and the right side of the energy storage slide block, and can be matched with corresponding ratchets on the handle shell to realize unidirectional stepping movement.
In this embodiment, in the initial state, the holding block 107 pushes the link 109 to pivot, pushing the lock slider 108 to move downward, so that the lock slider 108 is located and held in the ejection position.
Further preferably, the holding spring 118 is a compression spring, which is arranged in a slot in the handle housing for the arrangement of the holding block 107. In other embodiments, the retaining spring may also be a tension spring.
In this embodiment, the locking slider 108 and the link 109 are preferably hinged by a hinge pin 110, one end of the hinge pin 110 extends into a sliding groove 1022 on the handle housing, the sliding groove 1022 is formed on the upper housing or the lower housing of the handle, the rear end of the sliding groove 1022 is a lifting slope, when the hinge pin 110 is moved backward, the locking slider 108 is lifted, and the locking slider is kept in a retracted state. The front of the chute 1022 is provided with a descending ramp 2092 formed on the stroke adjuster 209, and the lock slider 108 is kept in an ejected state by being depressed when the hinge pin 110 is advanced thereto. In this embodiment, the chute 1022 is provided in the magazine wall of the upper housing 102. The magazine wall of the upper housing 102 is also provided with another chute 1021 for the connecting post 2082 of the lancet connector 208 in the magazine to extend into the handle housing and connect with the energy storage slide.
In this embodiment, preferably, when the trigger member 103 is moved rearward into position, the sliding push block 104 moves downward against the ramp boss on the first stop 1011 to disengage from the accumulator slide 106. The first limiting member 1011 is fixedly connected or integrally formed with the lower housing 101.
In this embodiment, preferably, the lock member 111 is connected to the lower case 101 by a spring 124 so as to be given a tendency to move upward, the lock member 111 is provided with a locking boss 1111 for restricting the rearward movement of the trigger member 103, the locking boss 1111 is provided to protrude forward, the lock member 111 is provided with an unlocking pin 112 capable of sliding forward and backward, the unlocking pin 112 is pushed out against the lock member 111 by a pressure spring 121, when the unlocking pin 112 is pushed out forward and inserted into a restriction groove on the second restriction member 1012, the lock member 111 is in a locking position, the locking boss 1111 is capable of being pushed against a projection on the rear end of the trigger member 103 so as to restrict the rearward movement of the trigger member 103, when the unlocking pin 112 is pushed out forward and against a restriction projection on the second restriction member 1012, the lock member 111 is in an unlocking position, the locking boss 1111 is dislocated up and down with the projection on the rear end of the trigger member 103 so as not to restrict the rearward movement of the trigger member 103 any more, and when the trigger member 103 continues to move rearward into position, the projection on the rear end of the trigger member 103 is pushed back up and retracted by the unlocking pin 112 by the spring. The limiting groove and the limiting protrusion on the second limiting piece 1012 are arranged up and down and are in slope transition. The second limiting member 1012 is fixedly connected or integrally formed with the lower housing 101. The spring 124 is a tension spring or a compression spring. Therefore, the unlocking piece is pressed to unlock, the trigger component is used for triggering puncture and simultaneously pushing the unlocking pin back to realize re-locking, and the misoperation risk of re-puncture is avoided.
In the present embodiment, the lock 111 is located at the lock position in the initial state. The unlocking pin 112 is sleeved with a pressure spring 121 and a clamping spring 120, the clamping spring 120 is clamped in a clamping groove of the unlocking pin 112, and two ends of the pressure spring 121 respectively prop against the locking piece 111 and the clamping spring 120. In this way, the compression spring applies an outward pushing force to the unlocking pin, so that the unlocking pin 112 is clamped in the limiting groove on the second limiting piece 1012, and the locking piece 111 is kept in the locking position.
In this embodiment, preferably, the handle is further provided with a shear trigger lever 113 and an elastic limiting member, the shear trigger lever 113 is installed in the handle housing in a manner of being capable of sliding up and down, the shear trigger lever 113 is fixedly connected with a shear push button 115 slidably arranged outside the handle housing, the elastic limiting member is used for locking the shear trigger lever 113 to prevent the shear trigger lever 113 from moving up and down, and when the trigger member 103 moves backward in place, the elastic limiting member is pushed to unlock, so that the shear trigger lever 113 can move up and down, the shear trigger lever 113 realizes that the push locking member 215 moves left and right by pushing a release portion 2152 on the push locking member 215, so that the push member 213 is unlocked, and the push shear mechanism performs clamping and cutting of a suture. In this way, the push-shear mechanism can only be actuated after the trigger member is moved back into place, ensuring that the distal anchor is released and the suture is tensioned to clamp and sever the suture, avoiding the risk of surgical mishandling.
Further preferably, the handle housing and the magazine body are provided with through holes through which the shear trigger lever 113 passes. The upper part of the shear trigger lever 113 is U-shaped, one end of the upper part of the shear trigger lever penetrates through the through hole and stretches into the magazine to unlock the pushing locking piece 215, and the other end of the upper part of the shear trigger lever is matched and limited with the locking piece 111, wherein the locking piece 111 can limit the upward movement of the shear trigger lever 113 when the locking piece 111 is in the unlocking position, and the shear trigger lever 113 is not limited when the locking piece 111 is in the locking position. Therefore, the pushing and shearing mechanism can only act when the locking piece is locked, and the surgical risk caused by misoperation of the pushing and shearing mechanism during puncture is avoided.
Further preferably, the shear trigger lever 113 is mounted in a chute formed by the upper casing 102 and the lower casing 101 and can slide up and down, and is connected with the shear push button 115 through a fastening structure, the elastic limiting member is an elastic stop strip 114, the elastic stop strip 114 is V-shaped, one end of the elastic stop strip 114 is fixed in a clamping slot of the lower casing 101, the other end of the elastic stop strip 114 is inserted in a clamping slot on the shear trigger lever 113, when the shear trigger lever 113 is located at an initial position, the elastic stop strip 114 contacts with a boss of the lower casing 101, and the shear trigger lever 113 is locked to be unable to move. When the trigger member 103 is moved back into position, the elastic stopper 114 is compressed, and the other end of the elastic stopper 114 is withdrawn from the engagement groove in the shear trigger lever 113, so that the shear trigger lever 113 can be moved up and down.
The invention also discloses an anchor conveying method, which adopts the anchor conveying system and comprises the following steps:
1) External force is applied to the trigger component 103 for the first time, and the trigger component 103 drives the energy storage sliding block 106 and the puncture needle connecting piece 208 to move backwards for energy storage;
2) Pressing the lock 111 to unlock;
3) Continuing to apply external force to the trigger part 103, the energy storage sliding block 106 drives the puncture needle connecting piece 208 to move forwards for firing, the puncture needle 221 and the distal anchoring piece 300 extend out of the head end part 222 at the distal end of the puncture needle tube 224, the locking piece 111 is reset, and the external force applied to the trigger part 103 is removed to reset the puncture needle;
4) Again applying external force to trigger member 103, trigger member 103 moves energy storage sled 106 and lancet connector 208 rearward to retract lancet 221 and tighten the suture;
5) Pushing the shear push button 115 unlocks the push member 213, the push member 213 pulls the shear member 212, pushing the proximal anchor out of the head end 222 distal of the piercing needle 224, the push member 213 is restrained by the support 214, unlocking the shear member 212, and the shear member 212 pulls the push member 213, driving the shear rod and blade to shear the suture.
The following describes the specific action and cooperation process of the method using the above-described anchor delivery system as follows:
external force is applied to the locking push button, at this time, the buckle structure of the locking push button is retracted, the magazine can be loaded into the magazine bin of the handle, the external force applied to the locking push button is removed, the locking push button is locked into the handle under the action of the pressure spring, at this time, the magazine loading is completed, and the puncture needle connecting piece 208 is fixed with the energy storage sliding block 106, as shown in fig. 6.
The stroke adjusting cap 204 is rotated to drive the threaded rod 205 to rotate, at this time, the stroke adjusting member 209 can move back and forth according to the rotation of the threaded rod 205, and drive the stroke scale screw to move simultaneously, and the rotation of the stroke adjusting cap 204 is stopped after confirming the position of the stroke scale screw, as shown in fig. 9.
As shown in fig. 10, when an external force is applied to the trigger component 103, the trigger component slides backward along the chute from the initial state of the first position, drives the sliding push block 104 to contact with the energy storage slide block 106, and drives the energy storage slide block 106 to simultaneously move backward until the trigger component 103 contacts with the locking piece 111, at this time, the trigger component 103 is limited by the locking piece 111 and cannot slide backward continuously, as shown in fig. 11, at the same time, the locking slide block 108 is buckled with the ratchet structure in the lower housing 101, at this time, the energy storage slide block 106 is located at the second position, and the compression spring is used for accumulating mechanical energy, at this time, the external force applied to the trigger component 103 is removed, and the trigger component 103 is reset to the first position under the action of the tension spring.
As shown in fig. 12, a downward pressure is applied to the locking member 111, the locking member 111 slides downward, the unlocking pin 112 is compressed until sliding downward to the unlocking position, the pressure spring drives the unlocking pin 112 to pop up, and the unlocking pin is buckled on the limiting protrusion on the second limiting member 1012 to fix the locking member 111, so as to unlock the trigger component 103, as shown in fig. 13. Applying force to the trigger member 103 again, the trigger member 103 moves back again from the first position, and when the sliding push block 104 contacts the energy storage slide block 106 again, the energy storage slide block 106 is driven to slide back continuously, the trigger member 103 slides back continuously until contacting the unlocking pin 112 and moving continuously, the unlocking pin 112 is compressed until the sliding push block 104 contacts a trapezoid boss (slope boss) on the first limiting member, the trapezoid boss forms a downward pressure on the sliding push block 104 during the sliding back, the sliding push block 104 is pressed to the second position, at this time, the sliding push block 104 is disengaged from the energy storage slide block 106, as shown in fig. 14, and at the same time, the locking slide block 108 is lifted up and kept in the second position (retracted state) under the action of a lifting slope of a chute 1022 on the handle housing, as shown in fig. 15, at this time, the locking slide block 108 is unlocked from a ratchet structure on the first limiting member, the energy storage slide block 106 loses all locking and then slides forward rapidly under the action of the pressure spring and drives the puncture needle connecting piece 208 to slide forward, the puncture needle connecting piece 208 drives the suture fixing seat 211 and the guide rod 210 to slide forward until the puncture needle connecting piece 208 contacts with the buffer pin 206 and drives the buffer pin 206 to slide forward, the buffer pin 206 drives the in-place prompt cap 203 to slide forward until the buffer pin 206 contacts with the stroke adjusting piece 209, as shown in fig. 22, the puncture is completed, the in-place prompt cap 203 pops up completely to prompt the puncture to be in place, the energy storage slide block 106, the puncture needle connecting piece 208, the suture fixing seat 211 and the guide rod 210 all stop sliding and are positioned at the second position, the locking slide block 108 is pushed out downwards under the action of the descending slope of the chute 1022 on the handle shell when sliding forward in place, returns and is kept at the first position, as shown in fig. 16. The external force applied to the trigger part 103 is removed, the trigger part 103 returns to the first position again under the action of the tension spring, the unlocking pin 112 is compressed in the locking piece 111, the binding force to the locking piece 111 is lost, the locking piece 111 slides upwards under the action of the compression spring, the unlocking pin 112 ejects again under the action of the compression spring and is fixed in the limit groove of the lower shell 101, and the locking piece 111 returns to the first position (locking position) again to form locking of the trigger part 103.
External force is applied to the trigger component 103 again, the trigger component 103 slides backwards, the sliding pushing block 104 drives the energy storage sliding block 106 to move backwards again, the energy storage sliding block 106 drives the puncture needle connecting piece 208 to slide backwards, and the puncture needle connecting piece 208 drives the suture fixing seat 211 and the guide rod 210 to slide backwards. When the clamping groove of the guide rod 210 moves to the hook of the stroke adjusting member 209 to be buckled as shown in fig. 17, the guide rod 210 and the suture fixing seat 211 stop moving backwards, at this time, the puncture needle connecting member 208 continues to retract, and release of the distal anchor is completed until the trapezoid boss 2081 on the puncture needle connecting member 208 jacks up the hook of the stroke adjusting member 209, the guide rod 210 continues to slide backwards to tighten the suture, at this time, the puncture needle is completely retracted, and release of the distal anchor is completed, as shown in fig. 23.
As shown in fig. 18 and 19, in the initial state, the push lock 215 is connected to the push member 213 such that the push member 213 is locked and immovable. When the trigger member 103 moves backward, the elastic stop 114 is pressed into the clamping groove of the lower housing 101 to unlock the shear trigger lever 113, an external force is continuously applied to the trigger member 103, and an upward pushing force is applied to the shear push button 115 to drive the shear trigger lever 113 to move upward from the first position to the second position until the shear trigger lever 113 contacts with the push locking piece 215 and pushes the push locking piece 215 to slide laterally until the clamping hook portion of the push locking piece 215 is disengaged from the push member 213, as shown in fig. 20, at this time, the tension spring 233 pulls the push member 213 toward the shear member 212 and pushes the proximal anchoring piece forward until the push member 213 collides with the support 214, so that the support 214 pivots to unlock the shear member 212, as shown in fig. 21, the shear member 212 slides in the direction of the push member 213 under the action of the tension spring, and the shear lever is driven to complete the shear. In the process, if the structure is blocked, the action can not be successfully completed, and the manual operation can be carried out through the manual push button. The pushing force on the shear push button 115 is removed, the shear push button is reset to the first position under the action of the pressure spring, the external force of the trigger component 103 is removed, the trigger component returns to the first position again under the action of the pressure spring, at this time, the energy storage slide block 106 is left at the second position under the action of the locking slide block 108, the energy storage state is kept, the elastic stop bar 114 loses the external force to restore to the original state, and the shear trigger rod 113 is continuously locked.
The magazine is replaced, all parts of the handle are reset, the energy storage sliding block 106 is positioned at the energy storage position, and the next round of puncture can be directly performed after a new magazine is loaded. A schematic of the completion of the prostate suspension procedure is shown in fig. 24.
In the description of the present specification, the descriptions of the terms "one embodiment," "some embodiments," "one implementation," "a particular implementation," "other implementations," "examples," "particular examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment, implementation, or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described above may be combined in any suitable manner in any one or more embodiments, implementations, or examples. The technical scheme disclosed by the invention also comprises the technical scheme that any one or more specific features, structures, materials or characteristics are formed singly or in combination.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, variations, deletions of parts, additions of features, or re-combination of features may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the invention, all such simple modifications, equivalents, and adaptations of the embodiments as may be made by the principles of the invention and without departing from the scope of the invention.