Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments, and may be simply modified or replaced by those of ordinary skill in the art.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
And the shapes and dimensions of the various elements in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the description and in the claims to modify a corresponding element does not by itself connote any ordinal number of elements and does not by itself indicate the order in which a particular element is joined to another element or the order in which it is manufactured, but rather the use of ordinal numbers merely serves to distinguish one element having a particular name from another element having a same name.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, in addition, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also, in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
Along with the progress of scientific technology, various medical devices can realize various high-level automatic and intelligent medical operations in an intelligent electric control mode, so that the aim of high-quality diagnosis or treatment, such as medical devices of a common surgical instrument anastomat and the like, is fulfilled. Specifically, taking a linear cutting stapler as an example, the cutting stapler comprises an upper jaw and a lower jaw which can be opened and closed. Wherein, be equipped with the nail anvil on the lower jaw, be equipped with the nail storehouse seat on the upper jaw, and be equipped with nail storehouse and the cutting knife that can remove relative this nail storehouse in the nail storehouse seat, have the sword groove that the cutting knife removed on nail storehouse seat and the nail storehouse, the nail storehouse is equipped with the staple in the both sides of sword groove. In addition, the nail bin also comprises a nail box, a stitching nail, a nail pushing sliding block, a nail pushing sheet, a nail bin protecting cover and the like. When the upper forceps clamp and the lower forceps clamp are closed, the nail anvil and the nail bin clamp human tissues needing to be sutured, at the moment, the cutting knife and the nail pushing sliding block are pushed through the firing structure, and the suturing nails at the two sides of the nail bin can be sequentially pushed out through the nail pushing sliding block, so that the suturing nails touch the nail anvil through the human tissues, the human tissues at the two sides of the nail bin are sutured respectively, and further the human tissues at the two sides of the nail bin can be cut through the cutting knife from the suturing tissues at the two sides, and two actions of suturing and cutting are completed simultaneously.
In the operation process, if an operator (such as a surgeon) of the anastomat performs false firing (such as when a staple cartridge is not installed or after the cutting and suturing actions are completed and the cutting knife is reset) during operation of the linear cutting anastomat, the cutting knife performs firing and tissue cutting without performing the suturing actions at the moment, so that accidental injury to a patient is easily caused.
Therefore, in order to solve the technical problem that the medical equipment such as the linear anastomat and the like in the prior art is accidentally fired due to the manual misoperation, the disclosure provides a firing safety structure, an anastomat and the medical equipment, wherein the firing safety structure is used as a mechanical safety device for preventing accidents caused by the manual operation.
As shown in fig. 1-11, one aspect of the present disclosure provides a firing safety structure a that includes a firing seat 100, a blocking portion 200, a sliding portion 300, and a firing portion 400.
The firing seat 100 has a setting groove 101;
the blocking part 200 is arranged in the setting groove 101 and rotates relative to the firing seat 100;
the sliding part 300 is disposed in the disposition groove 101 corresponding to one side of the blocking part 200, and slides in the disposition groove 101 with respect to the blocking part 200;
the firing part 400 is arranged corresponding to the other side of the blocking part 200 and slides along the arrangement groove 101;
Wherein, in the non-working state, the firing part 400 is blocked by the blocking part 200 in the setting groove 101, thereby realizing firing safety for the firing action of the firing part 400; in the operating state, the sliding portion 300 slides along the setting groove 101, so that the blocking portion 200 rotates relative to the firing seat 100, and the firing portion 400 contacts with the sliding portion 300 along the setting groove 101 passing through the position of the blocking portion 200.
The firing seat 100 is mainly used as a main body supporting structure of the firing safety structure a, and is provided with a setting groove 101 for setting the firing safety structure a. As shown in fig. 1-3 and fig. 9-11, the firing seat 100 may be a strip-shaped three-dimensional structure, and the setting groove is a strip channel. In medical devices, firing block 100 may be used as an operating end of the medical device, such as an integral structure of an upper jaw or a lower jaw of a stapler.
The blocking part 200, as a key structure for realizing the firing safety of the firing safety structure a, may be integrally disposed in the setting groove 101 and cooperate with the firing seat 100. The blocking portion 200 has a rotatable structure capable of rotating relative to the firing seat 100. In the working state, the blocking portion 200 rotates relative to the firing seat 100, and rotates from the original state to the open state, so that the blocking portion 200 does not have the firing blocking effect any more; in the non-working state, the blocking portion 200 rotates reversely relative to the firing seat 100, and returns from the open state to the original state, so that the blocking portion 200 has the firing blocking effect. That is, in the original state (i.e., the non-operating state), the blocking portion 200 has a firing blocking effect; in the open state (i.e., the working state), the blocking portion no longer has a firing blocking effect.
The sliding part 300 is used as a trigger safety structure A to realize a trigger safety switch structure, and in a working state, the sliding part 300 can be in structural interference (such as mutual contact) with the blocking part 200, so that the blocking part 200 rotates relative to the trigger seat 100, and rotates from an original state to an open state, the blocking part 200 does not have a trigger blocking effect any more, and the sliding part 300 can be triggered by external force; in the non-working state, the sliding portion 300 and the blocking portion 200 do not interfere with each other (e.g. separate from each other), the blocking portion 200 rotates in a reverse direction relative to the firing seat 100, and returns from the open state to the original state, so that the blocking portion 200 has a firing blocking effect, and the sliding portion 300 is not easy to be fired by an external force. The sliding portion 300 slides in the installation groove 101 toward the blocking portion 200, and may interfere with the blocking portion 200, and the sliding portion 300 slides in the installation groove 101 away from the blocking portion 200, and may disengage from the blocking portion 200, so that the sliding portion does not have a structural interference effect.
The firing portion 400 is provided on the other side of the blocking portion 200 with respect to the sliding portion 300 as a firing mechanism of the firing motion of the firing safety structure, that is, the blocking portion 200 is provided between the firing portion 400 and the sliding portion 300. When the blocking portion 200 is in an open state due to the sliding interference of the sliding portion 300, the firing portion 400 may pass through the position of the blocking portion 200, contact with the sliding portion 300, and perform a firing motion on the sliding portion 300; in contrast, when the blocking portion 200 is slidingly separated from the sliding portion 300, the blocking portion 200 is in the original state when the blocking portion 200 is separated from the sliding portion 300 and the firing portion 400 is not located at the blocking portion 200, so that the firing portion 400 cannot contact the sliding portion 300 through the blocking portion 200, that is, the blocking portion 200 has a firing blocking effect.
Therefore, the above-mentioned firing safety structure a of the embodiment of the present disclosure can realize the free control of the firing action of the firing portion 400 through the structural cooperation between the blocking portion 200 and the sliding portion 300 and the firing portion 400, and avoid the special scenario that the firing portion 400 is accidentally fired under the unexpected circumstances (including manual misoperation), thereby being a mechanical safety structure, and preventing accidents caused by manual operations and the like. The firing safety structure a has a very simple structure, and can fully utilize the idle space of the firing seat 100.
As shown in fig. 1-4, 7, 9-11, the firing block 100 includes a base 110 and two side walls 120 according to embodiments of the present disclosure.
The base 110 forms a bottom surface of the setting groove 101;
the two side walls 120 are symmetrical to each other and are respectively disposed on two side edges of the base 110, and form a disposition groove 101 with the base 110.
The base 110 is a plate-shaped structure, and a slide rail can be arranged in the middle of the plate-shaped structure, and can extend from the position of the firing portion 400 to the tail end of the base 110 through the blocking portion 200, so that the firing portion 400 can slide in the setting groove 101 along the slide rail.
The two side walls 120 and the base 110 are integrally formed, wherein the two side walls 120 are respectively arranged on the edge of the base 110 along the length direction X to form the arrangement groove 101. Wherein the sidewall 120 may be disposed perpendicular to the base 110.
It should be noted that, the base 110 and the side wall 120 of the firing seat 100 may be correspondingly changed according to the structures of the blocking portion 200, the sliding portion 300, and the firing portion 400, which are not strictly bar-type structures.
The structure of the firing seat 100 can enable the firing safety structure A arranged on the firing seat to have better integration level, so that the firing safety structure A is easier to integrate at the firing operation end of the medical equipment, and the utilization rate and integration level of the structural space and the precision are improved.
As shown in fig. 1 to 7 and 9, according to an embodiment of the present disclosure, the blocking part 200 includes two blocking seats 210, two rotation shafts 220, two blocking members 230, two torsion springs 240, and two fixing members 250.
The two blocking seats 210 are mutually symmetrical and fixedly arranged at the inner side edge of the setting groove 101;
the two rotating shafts 220 are respectively disposed on the two blocking seats 210;
the two blocking members 230 are respectively sleeved on the two rotating shafts 220 and can rotate relative to the two rotating shafts 220;
the two torsion springs 240 are disposed on the two blocking members 230 corresponding to the two rotating shafts 220, respectively;
the two fixing members 250 are disposed on the two torsion springs 240 corresponding to the two rotation shafts 220, respectively.
The blocking portion 200 includes two blocking structures that are symmetrically disposed with respect to the sliding ways on the base 110, and the two blocking structures can be matched for use, so as to perform a blocking effect in an original state.
Each blocking structure may be formed of a blocking seat 210, a rotation shaft 220, a blocking member 230, a torsion spring 240, and a fixing member 250, wherein the blocking seat 210 is disposed on a seat hole of the base 110 along a junction position of the sidewall 120 and the base 110, the rotation shaft 220 and the blocking seat 210 are integrally formed on an upper surface of the blocking seat 210, the blocking member 230 is sleeved on the rotation shaft 220, and can rotate relative to the rotation shaft 220, and the torsion spring 240 is sleeved on a portion of the rotation shaft 220 exposing the blocking member 230 and is defined between the blocking member 230 and the fixing member 250 under the cooperation of the fixing member 250. Wherein the torsion spring 240 can make the blocking structure provide a restoring force for the blocking structure to return from the opened state to the original state when not receiving an external force, and the fixing member 250 can be a mechanical part for rotation fixed by a nut or the like.
As shown in fig. 2, 4-5, 6-7, and 9-10, each of the two stops 230 includes a stop end 231, an abutment end 232, and a stop body 233, according to an embodiment of the present disclosure.
The blocking end 231 corresponds to the blocking end 231 of the corresponding other blocking member 230 in the non-working state, and is used for blocking the firing part in a mutually matched manner;
the abutting end 232 abuts against the inner surface of the corresponding side wall 120 of the firing seat 100 in the non-working state;
The blocking main body 233, the blocking end 231 and the abutting end 232 are integrally formed, and the corresponding rotating shaft 220 of the blocking part 200 is sleeved;
wherein, the blocking end 231 includes a protrusion 231a, and the protrusion 231a is disposed on an outer surface of the blocking end 231.
According to an embodiment of the present disclosure, each torsion spring 240 of the two torsion springs 240 includes a torsion end 241 and a force-against end 242.
The twisting end 241 is sleeved on the corresponding convex column 231a and connected with the blocking piece 230 of the corresponding convex column 231 a;
the abutting end 242 abuts against the inner surface of the corresponding side wall 120 of the firing seat 100.
As shown in fig. 4, in the original state (i.e., the non-operating state), the blocking portion 200 is not subjected to an external force, the blocking end 231 of each blocking member 230 corresponds to the blocking end 231 of the opposite other blocking member 230 (i.e., the corresponding blocking ends 231 of the two blocking members 230 may contact each other, or a certain gap is left therebetween, but the gap is small enough to block the firing portion from being fired by mistake), and the abutting end 232 abuts against the inner surface of the corresponding side wall 120. The abutment end 232 abuts against the inner surface of the side wall 120 in the original state, so that the blocking member 230 is prevented from rotating excessively in the X direction due to the torsion of the torsion spring 240, and the blocking member 230 is prevented from being in the reverse open state. The blocking body 233 may be an expanded structure with an arc-shaped rotation surface and two sharp ends, which are separated to form the blocking end 231 and the abutting end 232, respectively. Further, a lower portion of the blocking body 233 forms a contact body for generating structural interference with the sliding portion 300.
In the original state, the torsion end 241 of the torsion spring 240 is sleeved on the boss 231a on the upper surface of the blocking end 231 of the blocking member 230, so as to generate a torsion restoring force for restoring the rotation of the blocking member 230, so that the blocking member 230 keeps the closing of the non-working state all the time, and the sliding firing of the firing portion 400 to the sliding portion 300 is blocked; the abutting end 242 of the torsion spring 240 abuts against the inner surface of the side wall 120, and may be directly fixed on a corresponding abutting structure provided on the inner surface of the side wall 120, so that the abutting end 242 is fixed relative to the torsion end 241, and thus when the torsion spring 240 receives an external force and the blocking member 230 is in a reverse open state, a torsion restoring force can be generated due to self deformation.
As shown in fig. 5, in the opened state (i.e., the operating state), when the blocking portion 200 is subjected to an external force directed away from the X direction, the blocking end 231 of each blocking member 230 and the blocking end 231 of the opposite other blocking member 230 are opened and rotated in the direction directed away from the X direction, respectively, and the abutting end 232 is separated from the inner surface of the corresponding sidewall 120 and rotated in the X direction, and finally the sliding portion 300 completely opens the two blocking ends 231, so that the blocking member 230 is in the opened state directed away from the X direction.
In the open state, since the torsion end 241 of the torsion spring 240 is sleeved on the boss 231a on the upper surface of the blocking end 231 of the blocking member 230, and the abutting end 242 of the torsion spring 240 abuts against the inner surface of the side wall 120, the torsion restoring force is generated due to the rotation restoration of the blocking member 230 caused by the self-deformation of the torsion spring 240, so that the blocking member 230 automatically returns to the original state once the external force is removed, and plays a role in triggering safety.
As can be seen, through the simple structural design of the blocking part 200, the structural relationship between the torsion spring 240 and the blocking member 230 is skillfully utilized, so that when the blocking member 230 of the blocking part 200 receives an external force opposite to X, the torsion force of the torsion spring 240 can be overcome, and the blocking member 230 is rotated and opened opposite to X, so that a gap is formed between the two opposite blocking members 230, and the firing part 400 can contact with the sliding part 300 through the gap (i.e. the position passing through the blocking part 200), thereby implementing the firing action; when the external force applied to the blocking members 230 is removed, and after the firing portion 400 is removed from the gap between the two blocking members 230, the blocking members 230 are rotated and closed in the X direction under the torsion restoring force of the torsion springs 240, so that the firing portion 400 is blocked by the blocking members 230, and firing safety is achieved. As can be seen, the blocking piece 230 of the blocking portion 200 can only rotate and open in the opposite direction of X, and cannot rotate and open in the direction of X, so that the blocking piece 400 can directly block the firing portion 400 from breaking through the blocking portion 200 and performing the firing action in the direction of X toward the sliding portion 300.
Therefore, the firing safety structure is compact in space, safe and reliable, normal firing operation of the firing part is not affected, false firing actions caused by human errors of the firing part can be prevented at the same time, and false firing injuries to patients caused by using corresponding medical equipment are effectively avoided.
As shown in fig. 1-2 and 6-11, according to an embodiment of the present disclosure, the sliding part 300 includes a slider 310 and two push posts 320.
The slider 310 serves as a main body structure of the slider 300;
the two pushing posts 320 are symmetrically disposed on the side ends of the slider 310 facing the blocking portion 200;
in the working state, the two pushing posts 320 slide along the sliding portion 310 along the setting groove 101 towards the firing portion 400, and push the two corresponding blocking pieces 230 of the blocking portion 200 respectively, so that the two blocking pieces 230 rotate towards one side of the firing portion 400 respectively, and the blocking portion 200 releases the blocking of the firing portion 400 along the setting groove 101;
wherein, the two pushing posts 320 have a gap therebetween and are parallel to each other.
As shown in fig. 2, the sliding portion 300 may slide back and forth in the setting groove 101 along the X direction, the sliding member 310 and the two pushing posts 320 are integrally formed to form a main body structure of the sliding portion 300, where two pushing posts 320 disposed on an end surface of the sliding portion 300 facing one end of the blocking portion 200 and having a gap are driven by the sliding portion 300 to move in opposite directions along the X direction and contact with the blocking member 230 of the blocking portion 200 (specifically, may interfere with a lower contact body of the blocking main body 233 due to contact), and when an external force acting on the sliding portion 300 facing the X direction increases, the pushing posts 320 apply a force to the contacting blocking main body 233 to overcome a torsion force exerted by the torsion spring 240 of the blocking portion 200, so that the blocking member 230 of the blocking portion 200 rotates facing the X direction, the two blocking members 230 are simultaneously forced to gradually open in opposite directions, the gap between the blocking ends 231 of the two blocking members 230 increases until the two blocking members 230 are in a fully open state. The pushing posts 320 interfere with the lower portion of the blocking body 233 of the corresponding blocking member 230, so that the blocking portion 200 rotates from the original state to the open state, and the firing portion 400 may perform the firing action on the sliding portion 300 through the gap between the two blocking members 230.
At this time, since the two pushing posts 320 are disposed parallel to each other and the pushing posts 320 are of a rigid structure of a long post shape, the pushing posts 320 receive almost only a component force perpendicular to the X direction of the torsion restoring force from the stopper 230, so that the sliding portion 300 is not easily pushed away by the stopper 200 even after stopping the sliding in the X reverse direction, and the stopper 200 is restored to the original state. Also, when the sliding part 300 is slid in the setting groove 101 in the X direction by the firing part 400, the push rod 320 is withdrawn from the structural interference with the stoppers 230, but the firing bar 420 (shown in fig. 8) of the firing part 400 is still located between the two stoppers 230, so that the two stoppers 230 cannot be restored to the original state. Only when the pushing post 320 of the sliding part 300 is removed and the firing part 400 is withdrawn from the original position, the blocking part 200 can restore the contact blocking of the two blocking members 230, preventing the firing part 400 from breaking through the blocking of the blocking members 230 to fire the sliding part 300.
It is enough that, based on the ingenious design of the sliding part 300, the blocking opening and closing of the blocking part 200 can be realized by matching with the blocking part 200, so that the blocking part 200 can not influence the normal firing of the firing part 400 in the normal firing process, after the firing is finished, the blocking part 200 can fully block the abnormal firing of the firing part 400, the structural design is extremely simple and effective, the utilization of the idle space of the firing seat is fully realized,
As shown in fig. 1-2 and 6-9, according to an embodiment of the present disclosure, the sliding portion 300 further includes a contact plate 330, and the contact plate 330 is disposed at a middle portion of the sliding member 310 corresponding to the gap, for contacting the firing portion 400 in the working state.
As shown in fig. 6 to 8, the contact plate 330 of the sliding part 300 is located at the middle of the sliding part 310, corresponds to the gap between the two push posts 320 of the sliding part 300, and is vertically disposed on the base of the sliding part 310.
Therefore, when the firing portion 400 passes through the blocking portion 200, it can contact the contact plate 330 along the gap between the two pushing posts 320, and under the driving of the external force, the sliding portion 300 is pushed by the contact plate 330 to slide along the setting groove 101 in the X direction, and the firing motion is performed at the firing position.
As shown in fig. 1-2 and 6-9, according to an embodiment of the present disclosure, the firing part 400 includes a top plate 410, and the top plate 410 is disposed at an end of the firing part 400 facing the sliding part 300, and in an operating state, the top plate 410 slides along a gap toward the sliding part 300 and contacts with the contact plate 330 of the sliding part 300.
As shown in fig. 8, an end of the firing bar 420 facing the sliding portion 300 is provided with a top plate 410, and an end surface of the top plate 410 may contact with a contact surface of the contact plate 330 of the sliding portion 300, and the top plate 410 is in contact with the contact plate 330 under the action of external force, so that the sliding portion slides in the X direction. The upper and lower sides of the top plate 410 may be provided with a limiting structure, which may be used to limit the top plate 410 to slide back and forth along the sliding way on the base 110 of the firing seat 100.
The sliding part 300 can slide along the X direction under stable force by means of the top connection plate 410 of the firing part 400, so that when the sliding part 300 slides along the X direction, the push post 320 of the sliding part 300 can release contact interference with the blocking piece 230 of the blocking part 200 and drive the sliding part 300 to realize firing action.
It should be emphasized that, in fact, the above-mentioned firing safety structure a adopts a symmetrical structure arrangement, that is, mutually symmetrical structural components are respectively arranged along two sides of the slide way of the base 110, so as to realize the firing blocking of the firing portion 400, and in fact, when the symmetrical structure design is removed and only a single-side design is adopted, the firing safety effect of the above-mentioned firing safety structure a can still be realized, and the related design can be referred to as follows:
according to an embodiment of the present disclosure, the blocking portion includes a blocking seat, a rotation shaft, a blocking member, a torsion spring, and a fixing member.
The blocking seat is fixedly arranged at the edge of the inner side of the setting groove;
the rotating shaft is arranged on the blocking seat;
the blocking piece is sleeved on the rotating shaft and can rotate relative to the rotating shaft;
the torsion spring is arranged on the blocking piece corresponding to the rotating shaft;
the fixed part corresponds to the rotating shaft and is arranged on the torsion spring.
According to an embodiment of the present disclosure, the sliding portion includes a push post provided on a side end of the sliding portion facing the blocking portion;
Under the working state, the pushing column slides along the sliding part along the setting groove towards the firing part to push away the blocking piece, so that the blocking piece rotates towards one side of the firing part, and the blocking part releases the blocking of the firing part along the setting groove;
wherein, push away the post and the lateral wall of percussion seat are parallel to each other.
It should be understood by those skilled in the art that, by using the single side wall of the firing seat as the slideway and using the single blocking member as the firing blocking portion, the firing blocking of the firing portion can still be correspondingly realized, and meanwhile, the sliding portion can still be opened or closed by using the single pushing post, which is not described in detail.
As shown in fig. 1-2 and 9-11, another aspect of the present disclosure provides a stapler including the firing safety structure described above, wherein the stapler includes a cartridge structure 500, wherein the cartridge structure 500 includes a cartridge 510.
In the working state, the nail bin structure 500 is slidably mounted along the setting groove 101 of the firing seat 100 towards the sliding part 300 of the firing safety structure a, and pushes the sliding part 300 to slide along the setting groove 101 towards the blocking part 200 of the firing safety structure a, so that the blocking part 200 rotates relative to the firing seat 100, the firing part 400 passes through the blocking part 200 along the setting groove 101, contacts with the sliding part 300, drives the sliding part 300 to slide along the internal channel of the nail bin 510, and performs firing action on the nail bin 510 to realize the functions of stitching and cutting; in the non-working state, the firing portion 400 is blocked by the blocking portion 200 in the setting groove 101, so that firing safety is realized for the firing action of the firing portion 400, and the cutter head cutting function of the firing portion 400 caused by false firing is prevented.
In the non-working state, the staple cartridge 510 may be in a separated state with the firing seat 100 or the staple cartridge 510 has been matched to complete the stapling, and the staple cartridge 510 is separated from the sliding portion 300, i.e. the staple cartridge 510 has achieved the staple discharging, thereby completing the stapling function. Further, in the working state, the staple cartridge 510 can be generally matched with the sliding portion 300 and directly installed in the setting groove 101 of the firing seat 100, so as to complete the sliding installation of the staple cartridge 510 along the setting groove 101 of the firing seat 100 towards the sliding portion 300 of the firing safety structure, thereby pushing the sliding portion 300 to approach the blocking portion 200.
When the firing seat 100 is used as an upper jaw component of the stapler and the anvil is used as a lower jaw component of the stapler, the two components are matched with each other to realize the stitching function.
According to an embodiment of the present disclosure, the firing section 400 of the firing safety structure a includes a cutter knife disposed on the top plate 410 of the firing section for achieving a cutting function in the process of achieving the stapling function of the staple cartridge 510.
According to an embodiment of the present disclosure, the stapler B further includes a cartridge cover 520, in a non-working state, the cartridge cover 520 is disposed on a staple outlet surface of the staple cartridge 510 and detachably connected with the staple cartridge 510, wherein the cartridge cover 520 includes a limiting plate 521, the limiting plate 521 is disposed on an inner surface of an end body of the cartridge cover 520 facing the sliding portion 300, for contacting with the contact plate 330 of the sliding portion 300, and in a sliding installation process of the staple cartridge structure, the limiting plate 521 is abutted on the contact plate 330, so that the cartridge cover 520 drives the sliding portion 300 to slide along the setting groove 101 toward the blocking portion 200, so that the blocking portion 200 rotates relative to the firing seat 100. For the cartridge 510 with the completed stapling, the sliding part 300 is located inside the cartridge 510, and the sliding part 300 lacks the limit of the cartridge cover 520 and may shake in the cartridge 510, but cannot push the blocking part 200 due to the lack of the pushing force of the cartridge cover.
Therefore, the anastomat can be one of a plurality of anastomat medical equipment, and particularly can be a linear cutting anastomat. In order to prevent false fires, the stapler may be provided with a firing safety mechanism a as described above as a mechanical safety mechanism.
The blocking portion 200 of the triggering safety structure a may include a secondary triggering lock, and a secondary triggering lock rotating shaft, where the secondary triggering lock may be the blocking member 230 of the blocking portion 200, and the secondary triggering lock rotating shaft may be the rotating shaft 220 of the blocking portion 200. In addition, the stapler may further include a cutter, a cartridge holder, a cartridge 510, etc., where the cutter may be located on an end surface of the top plate 410 of the firing portion 400, and the cartridge holder may be the firing holder 100. Wherein, the side of the nail bin 510 facing the jaw of the nail anvil is provided with a plurality of nail outlet holes, the main body of the sliding piece 310 of the sliding part 300 facing the side of the nail bin 510 is provided with an inclined surface, when the sliding piece 310 is pushed by the top connection plate 410 of the firing part 400 and slides in the nail bin 510, the nail in the nail bin 510 is extruded by the sliding piece 310, and is pushed out from the nail outlet holes, thereby realizing the tissue suturing between the two jaws.
Wherein, two secondary firing lock rotating shafts that are symmetrical to each other are fixed on the nail bin seat (namely the firing seat 100), and each secondary firing lock rotating shaft is provided with a secondary firing lock (namely the blocking piece 230), a secondary firing lock reset spring (namely the torsion spring 240) and a secondary firing lock fixing cover (fixing piece 250). The cutter is positioned behind the secondary firing lock (i.e., the stop 230) before firing (where the direction of cutter movement at firing is defined as forward, i.e., forward in the X direction, and backward in the X direction). The staple cartridge 510 is a removable component that, in use, is mounted in front of the secondary firing lock (i.e., the stop 230). Wherein the cartridge 510 is further provided with a protective cover (i.e., cartridge cover 520), a pusher sled (i.e., sled 310), and the like.
Two groups of secondary firing locks (namely, blocking pieces 230) capable of automatically resetting are symmetrically arranged on a nail cartridge seat (namely, a firing seat 100) to serve as mechanical limiting, and whether the secondary firing locks (namely, the blocking pieces 230) are required to be opened or not is determined according to the state of a nail pushing sliding block (namely, a sliding piece 310) in the nail cartridge 510, so that the cutting knife is prevented from firing in an unexpected state. Specifically, the symmetrically installed secondary firing lock (i.e., the blocking member 230) defaults to a closed state (i.e., an original state, where the two blocking members 230 are in contact with each other), i.e., the secondary firing lock return spring (i.e., the torsion spring 240) returns the secondary firing lock (i.e., the blocking member 230), and the tail end of the secondary firing lock (i.e., the blocking member 230) is limited after contacting the cartridge seat (i.e., the firing seat 100). The secondary firing lock (i.e., the stop 230) may only open rearward (and may not open forward due to the tail end stop) under external forces, as described above with respect to fig. 4 and 5 and above with respect to the stop 230.
The secondary firing lock (i.e., stop 230) is in a closed state before the staple cartridge 510 of the stapler is loaded into the cartridge housing (i.e., firing housing 100). When the cutter moves forwards to be close to the secondary firing lock (namely the blocking piece 230) after firing, the cutter is limited by the secondary firing lock (namely the blocking piece 230), so that the empty firing without a nail bin is avoided.
The cartridge 510 is configured with a protective cover (i.e., cartridge cover 520) and the pusher sled (i.e., sled 310) in the cartridge 510 cannot move forward due to the limited position of the protective cover (i.e., cartridge cover 520). As shown in fig. 11, the contact plate 330 provided on the slider 310 may be in contact with the top plate 410 of the firing section 400 on one side and may also be in contact with the end surface of the protective cover (i.e., cartridge cover 520) on the other side. Specifically, the protective cover (i.e., the cartridge cover 520) is detachably matched with the cartridge 510, and the limiting plate 521 of the protective cover (i.e., the cartridge cover 520) is perpendicular to the lower surface of the protective cover (i.e., the cartridge cover 520), and the limiting plate 521 is in contact with the other end surface of the contact plate 330, so that the staple pushing slider (i.e., the slider 310) cannot slide toward the cartridge 510 along the X direction due to the fact that the contact plate 330 is limited by the limiting plate 521 in the state of being matched with the cartridge 510.
In the process that the nail cartridge 510 of the anastomat is installed in the nail cartridge seat (namely, the firing seat 100), the nail pushing slider (namely, the sliding piece 310) pushes the secondary firing lock (namely, the blocking piece 230) to be opened, the secondary firing lock (namely, the blocking piece 230) is in surface contact with the nail pushing slider (namely, the sliding piece 310) after being opened, at the moment, the protective cover (namely, the nail cartridge cover 520) of the nail cartridge 510 is removed, and the secondary firing lock reset spring (namely, the torsion spring 240) cannot push the nail pushing slider (namely, the sliding piece 310) to move forward, so that the secondary firing lock (namely, the blocking piece 230) keeps an open state, a cutting knife of the firing part 400 can pass through and cling to and push the nail pushing slider (namely, the sliding piece 310), and when the nail pushing slider (namely, the sliding piece 310) is out of contact with the secondary firing lock (namely, the blocking piece 230), a cutting knife head is limited by the secondary firing lock (namely, the blocking piece 230) and can continue to advance, and finally, the suturing and cutting actions are completed.
After the stapling and severing action is completed, and the knife is reset behind the secondary firing lock (i.e., stop 230), the secondary firing lock (i.e., stop 230) will be reset by the secondary firing lock return spring (i.e., torsion spring 240). At this time, the pushing ram (i.e., the slider 310) is separated from the cutter, and the pushing ram (i.e., the slider 310) cannot open the secondary firing lock (i.e., the blocking member 230) because the cartridge protection cover (i.e., the cartridge cover 520) is not limited. The secondary firing lock (i.e., stop 230) serves as a stop for the cutter to advance, thereby avoiding secondary firing of the same cartridge.
Obviously, for the anastomat equipment of the embodiment of the disclosure, due to the firing safety structure A, misoperation such as no-cartridge empty firing, secondary firing of the same cartridge and the like of the linear cutting anastomat can be prevented under the condition that normal operation of the linear cutting anastomat is not affected, and the structure space is compact, safe and reliable.
Another aspect of the present disclosure provides a medical device comprising the firing safety structure described above. The medical device may be an electric control medical device such as the anastomat or an intelligent medical device, and the like, which is not particularly limited.
Thus, embodiments of the present disclosure have been described in detail with reference to the accompanying drawings.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.