Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of an endoscope provided in some embodiments of the present application;
FIG. 2 is a schematic view of the internal structure of an endoscope provided by some embodiments of the present application;
FIG. 3 is a schematic diagram illustrating the cooperation between a switching valve and a connecting pipe according to some embodiments of the present application;
FIG. 4 is a schematic diagram illustrating the separation of a switching valve and a connecting pipe according to some embodiments of the present application;
FIG. 5 is a schematic view of a portion of a connecting tube according to some embodiments of the present application;
FIG. 6 is a cross-sectional view of a switching valve and a connecting tube with a switching structure in a second state according to some embodiments of the present application;
FIG. 7 is a second cross-sectional view of a switching valve and a connecting tube with a switching structure in a second state according to some embodiments of the present application;
FIG. 8 is a cross-sectional view of a switching valve and a connecting tube with a switching structure in a first state according to some embodiments of the present application;
FIG. 9 is a second cross-sectional view of a switching valve and a connecting tube with a switching structure in a first state according to some embodiments of the present application;
FIG. 10 is a schematic illustration of a valve cartridge according to some embodiments of the present application;
FIG. 11 is a cross-sectional view of a valve cartridge provided by some embodiments of the present application;
FIG. 12 is a second schematic structural view of a valve element according to some embodiments of the present application;
FIG. 13 is a schematic view of an endoscope assembly and functional device mated in accordance with some embodiments of the present application;
FIG. 14 is a schematic view of a portion of the internal structure of an endoscope assembly and functional device mating structure provided in accordance with some embodiments of the present application;
FIG. 15 is a detailed view of the application about FIG. 14 at A;
FIG. 16 is a schematic view of a portion of the internal structure of an endoscope assembly and functional device mating structure provided in accordance with some embodiments of the present application;
FIG. 17 is a detailed view of the application about FIG. 16 at B;
Fig. 18 is a schematic view of a negative pressure suction sheath coupled to an endoscope assembly according to some embodiments of the present application.
In the figure, 100-endoscope, 110-handle, 111-external interface, 120-suction valve, 130-instrument channel, 140-insertion part, 150-suction channel, 200-negative pressure suction sheath, 210-suction channel, 211-negative pressure port, 220-sheath, 230-sheath, 300-connecting tube, 310-second fitting, 311-second threaded structure, 312-second limit structure, 320-plug, 330-tube body, 400-switching valve, 410-valve seat, 411-mounting cavity, 412-first interface, 413-second interface, 414-third interface, 420-rotator, 421-inner cavity, 422-first opening, 423-second opening, 424-third opening, 430-valve core, 431-avoidance through hole, 432-avoidance groove, 440-first fitting, 441-first threaded structure, 442-first limit structure.
Detailed Description
The following description provides many different embodiments, or examples, for implementing different features of the invention. The elements and arrangements described in the following specific examples are presented for purposes of brevity and are provided only as examples and are not intended to limit the invention.
In the embodiments of the present application, "proximal" and "distal" refer to the endoscope and its accessories in the use environment, with respect to the user's near-far position, wherein the end closer to the user is designated as "proximal" and the end farther from the user is designated as "distal".
An embodiment of the present application provides an endoscope 100, and referring to fig. 1, the endoscope 100 provided by the embodiment of the present application includes a handle 110 and a suction valve 120. The suction valve 120 is mounted on the handle 110, and the handle 110 has an external connection port 111, and the external connection port 111 communicates with the suction valve 120. The external connection port 111 is used to connect the suction passage 210 of the functional device to communicate the suction valve 120 with the suction passage 210 of the functional device.
It will be appreciated that suction valve 120 is one of the components of endoscope 100 to which a negative pressure device is connected to aspirate a target site. When operating the endoscope 100, the operator generally holds the endoscope 100 with one hand at the handle 110 to control the endoscope 100. Suction valve 120 is attached to handle 110, and the operator can control suction valve 120 to open or close suction valve 120 while holding endoscope 100 with one hand.
The handle 110 is provided with an external connection port 111, the external connection port 111 is an opening arranged on the shell of the handle 110, and the external connection port 111 can be communicated with the suction channel 210 of the functional equipment, so that the suction valve 120 is communicated with the suction channel 210 of the functional equipment. In this way, the suction passage 210 of the functional device can be opened or closed directly by controlling the suction valve 120. When external functional equipment is needed to be matched with the endoscope 100, an operator can directly control the suction valve 120 on the handle 110 to control whether the functional equipment sucks the target position, the operator can finish operation by holding the handle 110 by one hand without two hands, the operation steps of the functional equipment are simplified, and the convenience of operation is improved.
Since the embodiment of the present application uses the suction valve 120 of the endoscope 100 instead of the suction valve 120 of the functional device, there is no need to provide the suction valve 120 on the functional device, and the number of valves on the functional device can be reduced. Since the suction valve 120 is not required, the structure of the functional apparatus can be simplified, the production cost of the functional apparatus can be correspondingly reduced, and the production efficiency can be correspondingly improved.
It will be appreciated that during intraoperative procedures, endoscope 100 may be used in conjunction with other devices, i.e., functional devices as described in embodiments of the present application, having aspiration channel 210. One end of the functional device is used for being connected to the external interface 111, and the other end is placed at the target position to suck the target position.
In some embodiments, the functional device may be a negative pressure suction sheath 200. The negative pressure suction sheath 200 is generally used in conjunction with the endoscope 100 for the treatment of urinary tract lithiasis. The insertion portion 140 of the endoscope 100 is inserted into the sheath tube 230 of the ureteral sheath, and the distal end of the sheath tube 230 and the distal end of the insertion portion 140 are both inserted into the target site of the body lumen. During the breaking up of the stones, the side of the endoscope 100 needs to be perfused with fluid, while the side of the negative pressure suction sheath 200 needs to aspirate the mixture of the stones inside the body and the perfused fluid on the side of the endoscope 100. The suction channel 210 of the negative pressure suction sheath 200 is communicated with the suction valve 120 of the endoscope 100, and the suction function of the negative pressure suction sheath 200 is directly controlled by the suction valve 120 of the endoscope 100, so that the operation steps of the negative pressure suction sheath 200 and the endoscope 100 are simplified, and the convenience of operation is improved.
In the prior art, the suction valve 120 on the endoscope 100 side is not used during the treatment of the stones. In the present application, the suction valve 120 is communicated with the suction channel 210 of the functional apparatus, and the suction valve 120 is fully utilized, and at the same time, the overall operation process of the endoscope 100 and the functional apparatus is simplified.
The external connection port 111 and the suction valve 120 may be connected through a pipeline, or the port of the suction valve 120 may be directly disposed at the external connection port 111. The communication between the external connection port 111 and the suction channel 210 of the functional device may be realized through an external pipeline, or the port of the suction channel 210 of the functional device may be directly connected to the external connection port 111.
In some preferred embodiments, referring to fig. 1-2, 14-17, endoscope 100 further includes a switching valve 400. The switching valve 400 is mounted on the handle 110, and the switching valve 400 has a first port 412, a second port 413, and a third port 414, the first port 412 is connected to the external port 111, the second port 413 is connected to the suction valve 120, and the third port 414 is connected to a working channel of the endoscope 100 or a working channel of a functional device. The switching valve 400 is a valve connected between the working channel, the suction valve 120, and the first port 412, and the three can be selectively communicated by controlling the state of the switching valve 400. In some embodiments of the present application, the operator may control the switching valve 400 to selectively communicate the suction valve 120 with the first port 412 or to communicate the suction valve 120 with the working channel according to actual needs.
In the case where the suction passage 210 of the functional device is required to be used, the switching valve 400 is connected to the suction valve 120 and the first port 412, the suction passage 210 of the functional device is connected to the external port 111, and the suction valve 120 is used to control the functional device to suck the target position. In the case where the suction passage 210 of the functional device is not required to be used, the switching valve 400 may be controlled to switch the switching valve 400 to a state in which the suction valve 120 and the working passage are communicated. The working channel may be a channel inside the endoscope 100 or a channel inside the functional device, and the suction valve 120 communicates with the working channel, so that the connection between the suction channel 210 of the functional device and the endoscope 100 can be released, and the working channel can be used alone. In the case where the suction valve 120 communicates with the working channel of the endoscope 100, the endoscope 100 is used alone at this time, and the movement, operation, and the like of the endoscope 100 are prevented from being affected by the presence of functional equipment.
It can be understood that the connection between the first interface 412 and the external interface 111 means that the first interface 412 is mutually communicated with the external interface 111, the external interface 111 is sleeved outside the first interface 412, or the opening of the first interface 412 is aligned with and communicated with the external interface 111, the first interface 412 may protrude from the handle 110 relative to the external interface 111, as shown in fig. 1, and the outer edge of the first interface 412 may also be located inside the external interface 111.
The working channel of the functional device means a channel for transporting substances required for working of the instrument, medium, etc. in operation, in addition to the suction channel 210, in the functional device.
In some embodiments, endoscope 100 further includes instrument channel 130, and third interface 414 communicates with instrument channel 130. I.e., the working channel is the instrument channel 130 of the endoscope 100. Various instruments can enter the body cavity of the human body through the instrument channel 130 to correspondingly operate the target position, and the various instruments can be sampling forceps, a stone removing device and the like. The suction valve 120 may be opened when sucking the liquid from the target site or sucking the liquid from the target site through the instrument channel 130.
The endoscope 100 provided by the embodiment of the application does not affect the single use of the endoscope 100 even if the external connection interface 111 and the switching valve 400 are arranged. By providing the switching valve 400, an operator can control the switching valve 400 according to actual conditions, improving convenience and flexibility in use of the endoscope 100.
In some embodiments of the present application, the switching valve 400 may directly select a three-way valve, and the three-way valve is used to control the suction valve 120 to communicate with the external connection 111 or the suction valve 120 to communicate with the working channel. In other embodiments, the switching valve 400 may be a four-way valve, a five-way valve, etc., and the redundant ports of the switching valve 400 may be connected to other devices to achieve diversified operation of the endoscope 100.
The handle 110 of the endoscope 100 is limited in position, and in order to facilitate the operator to operate the suction valve 120 while holding the endoscope 100, the suction valve 120 is typically disposed at the proximal end of the handle 110, and the suction channel 150 is typically connected between the suction valve 120 and the switching valve 400 to accommodate the position of the suction valve 120.
In some embodiments of the present application, the switching valve 400 may be connected to the functional device through the connection pipe 300. The functional device is generally spaced from the endoscope 100 by a distance when in use, the suction channel 210 of the functional device cannot be directly connected to the external interface 111, and the connection tube 300 is typically connected between the external interface 111 and the functional device by using the connection tube 300 to adapt to the positions of the endoscope 100 and the functional device. Since the switching valve 400 is further provided in the handle 110, the connection of the connection tube 300 to the external connection port 111 is actually also the connection of the connection tube 300 to the first connection port 412. The connection tube 300 is typically a hose.
The switching valve 400 is provided with a switching structure that can be engaged with the connection pipe 300 to switch between a first state and a second state under the driving of the connection pipe 300. Referring to fig. 8 and 9, in the case where the switching structure is connected to the connection pipe 300, the switching structure is in the first state. The second interface 413 is isolated from the third interface 414, and the first interface 412 is communicated with the second interface 413. At this time, the suction valve 120 communicates with the external connection port 111. Referring to fig. 6 and 7, in a case where the switching structure is separated from the connection pipe 300, the switching structure is in the second state. The second interface 413 is isolated from the first interface 412, and the second interface 413 is in communication with the third interface 414. The suction valve 120 communicates with the working channel.
When the switching structure is in different states, the opening and closing conditions of the internal channels are different. The embodiment of the application controls the switching of the state of the switching structure by setting the connection of the connecting pipe 300 and the switching structure, so that when the connecting pipe 300 is inserted, the switching structure is automatically switched to the first state, the suction valve 120 is communicated with the functional equipment, and when the connecting pipe 300 is taken down, the switching structure is automatically switched to the second state, and the suction valve 120 is communicated with the working channel. The operator does not need to additionally control the switching valve 400 to adjust the state of the switching structure when controlling the connection pipe 300, and the convenience of operation can be further improved.
In specific use, when the suction channel 210 of the functional device is required to be used, the connection pipe 300 is connected with the switching structure, so that the suction valve 120 can be communicated with the suction channel 210 of the functional device, and when the suction channel 210 of the functional device is not required to be used, the connection pipe 300 is directly removed from the switching structure, and the suction valve 120 and the working channel of the endoscope 100 can be communicated by separating the connection pipe from the switching structure. When the connection pipe 300 is connected to and disconnected from the switching structure, the switching structure is in different states, that is, the switching of the switching structure between the first state and the second state can be achieved in the process of changing the relative positions of the connection pipe 300 and the switching structure. In the process of connecting the connection pipe 300 from outside the switching structure to the switching structure, the switching structure is switched from the second state to the first state. The switching structure is switched from the first state to the second state in the process of removing the connection pipe 300 from the switching structure.
By controlling the state of the switching structure through the cooperation of the connection tube 300 and the switching structure, it is possible to avoid or reduce the occurrence of errors during the use of the endoscope 100. For example, when the functional device is required to be used, the connection tube 300 is connected to the external connection port 111, but the state of the switching valve 400 is forgotten to be adjusted, and at this time, the switching valve 400 communicates the suction valve 120 with the working channel, and when the suction valve 120 is started at this time, the suction valve 120 sucks the working channel, and the suction channel 210 of the functional device cannot perform suction, which affects the progress of the operation. For example, when the endoscope 100 needs to be used alone, although the connection tube 300 is removed, the state of the switching valve 400 is forgotten, and at this time, the switching valve 400 communicates the suction valve 120 and the external connection port 111, and when the suction valve 120 is started at this time, the suction valve 120 cannot suck the working channel.
The switching structure may be configured to switch the state by moving or may be configured to switch the state by rotating. In some embodiments of the present application, the switching structure may be illustrated with reference to fig. 4, 6 and 8, and the switching structure includes two parts, namely a valve seat 410 and a rotor 420. Referring to fig. 4, the valve seat 410 has a mounting chamber 411, and a first port 412, a second port 413, and a third port 414 of the switching valve 400 are provided to the valve seat 410 and communicate with the mounting chamber 411. Communication is achieved between the three interfaces through the mounting cavity 411. The rotating body 420 is rotatably arranged in the mounting cavity 411, and the second interface 413 is selectively controlled to be communicated with the first interface 412 or the third interface 414 by controlling the position of the rotating body 420.
The valve seat 410 is fixedly arranged between the external connection port 111, the suction valve 120 and the working channel, and the position of the valve seat 410 is fixedly arranged relative to the handle 110. The rotary body 420 is movable in the installation cavity 411, and the rotary body 420 can be driven by the connection pipe 300 to rotate between a first position and a second position, so that the switching of the switching structural state is realized. Referring to fig. 8 and 9, in the case where the rotator 420 is in the first position, the switching structure is in the first state. At this time, the suction valve 120 communicates with the connection pipe 300. Referring to fig. 6 and 7, in the case where the rotator 420 is in the second position, the switching structure is in the second state. The suction valve 120 is now in communication with the working channel.
The switching of the switching structure state is directly realized by controlling the rotation of the rotator 420, so that the whole operation is more convenient and flexible. And the position of the rotator 420 can be switched by setting the rotator 420 to rotate, and the position of the rotator 420 is not changed relative to the handle 110. In other embodiments, the rotating body 420 may be movably disposed with the valve seat 410, and the rotating body 420 is driven to move along the axial direction thereof by inserting the connecting tube 300, and the switching of the switching structure state is achieved by the movement of the rotating body 420.
In some embodiments of the present application, referring to fig. 4, the rotator 420 has an inner cavity 421 and first, second and third openings 422, 423 and 424 communicating with the inner cavity 421. The first opening 422 communicates with the first port 412, and a valve body 430 is installed in the rotor 420, and the valve body 430 blocks the first opening 422 from the second opening 423 and the third opening 424. The second opening 423 and the third opening 424 may communicate with each other through the inner chamber 421, but the first opening 422 is located at the other side of the valve body 430 with respect to the second opening 423 and the third opening 424 due to the valve body 430, and the first opening 422 cannot communicate with the second opening 423 and the third opening 424. The first opening 422 is an insertion opening of the switching valve 400, and the connection pipe 300 is inserted into the switching valve 400 through the first opening 422.
Referring to fig. 6 and 7, the rotor 420 is shown in a second position. The connection pipe 300 is separated from the switching valve 400, the second opening 423 is correspondingly communicated with the second port 413, the third opening 424 is correspondingly communicated with the third port 414, the second port 413 and the third port 414 are communicated through the inner cavity 421 of the rotator 420, and at the moment, the switching structure is in the second state, and the suction valve 120 is communicated with the working channel.
Referring to fig. 8 and 9, the rotor 420 is shown in a first position. The connecting pipe 300 is connected with the switching valve 400, the connecting pipe 300 passes through the valve core 430 to be communicated with the second opening 423 and the third opening 424 which are positioned at the other side of the valve core 430, correspondingly, the positions of the rotating body 420 are rotated, the positions of the second opening 423 and the third opening 424 are changed, the third opening 424 is communicated with the second interface 413, the suction valve 120 is communicated with the connecting pipe 300, the second opening 423 is blocked by the inner wall of the installation cavity 411, meanwhile, the inner wall of the rotating body 420 blocks the third interface 414 of the valve seat 410, and the second opening 423 and the third interface 414 are prevented from being communicated through a gap between the outer wall of the rotating body 420 and the inner wall of the installation cavity 411.
In some embodiments of the present application, referring to fig. 4, the switching valve 400 further includes a first engaging member 440 disposed on the switching structure, and the first engaging member 440 can engage with the second engaging member 310 of the connecting tube 300 to drive the rotator 420 to rotate. The driving of the switching structure by the connection tube 300 is achieved by the interaction between the first and second mating members 440 and 310. In the process of inserting the connection pipe 300 into the rotator 420, the first and second engaging members 440 and 310 are engaged with each other, and the linear motion of the connection pipe 300 is converted into the rotational motion of the rotator 420, thereby driving the rotator 420 to rotate.
In some embodiments, the first mating member 440 may be a spiral groove provided on a surface of the rotating body 420, and the second mating member 310 may be a slider provided on a surface of the connecting tube 300, wherein the slider is clamped into the spiral groove during the process of inserting the connecting tube 300 into the rotating body 420, and the rotating body 420 rotates relative to the connecting tube 300 as the slider slides in the spiral groove during the process of inserting the connecting tube 300 into the rotating body 420, and the rotating body 420 rotates from the second position to the first position. During the process of removing the connection tube 300 from the rotation body 420, the slider slides in the spiral groove, so that the rotation body 420 rotates relative to the connection tube 300, and the rotation body 420 rotates from the first position to the second position. With this structure, relative rotation occurs between the rotator 420 and the coupling tube 300, and the frictional force between the coupling tube 300 and the valve body 430 is large in the process that the coupling tube 300 penetrates the valve body 430 or is separated from the valve body 430.
In other embodiments, a limiting structure may be disposed between the connection pipe 300 and the rotating body 420, so that the connection pipe 300 and the rotating body 420 can rotate synchronously, an operator can control the rotation of the rotating body 420 by controlling the rotation of the connection pipe 300, the operation is more convenient, the rotating body 420 rotates more easily, and meanwhile, the friction between the connection pipe 300 and the valve core 430 can be correspondingly reduced. Referring to fig. 4, the first engaging member 440 includes a first limiting structure 442 disposed on the rotating body 420. Referring to fig. 5, the second fitting 310 includes a second limiting structure 312 disposed on the connection pipe 300. The first limiting structure 442 can be in limiting fit with the second limiting structure 312 in the circumferential direction of the rotating body 420, so that the connecting tube 300 can rotate synchronously with the rotating body 420 relative to the valve seat 410. Meanwhile, it should be noted that a movable margin of the second limiting structure 312 moving in the axial direction of the rotator 420 needs to be reserved so that the connection pipe 300 can smoothly pass through the valve core 430.
Further preferably, referring to fig. 4, the first fitting 440 further includes a first screw structure 441 provided at an inner wall or an outer wall of the valve seat 410, and referring to fig. 5, the second fitting 310 further includes a second screw structure 311 provided at the connection pipe 300. The first screw structure 441 and the second screw structure 311 are screw-engaged, and are screw-coupled, thereby fixing the connection tube 300 to the valve seat 410. After the connection pipe 300 is inserted into the proper position in the rotator 420, even if the operator releases the control of the connection pipe 300, the position of the connection pipe 300 can be maintained stable with respect to the valve seat 410 due to the screw connection between the first screw structure 441 and the second screw structure 311, and the position of the rotator 420, which is in a limit fit with the connection pipe 300, can be maintained stable, thereby maintaining the communication state between the suction valve 120 and the connection pipe 300 stable.
In some embodiments of the present application, one of the first and second limiting structures 442 and 312 is a block structure, and the other is a groove structure, and the block structure is inserted into the groove, so that the rotator 420 and the connection tube 300 are in limiting fit in the circumferential direction thereof. The groove has a certain depth in the insertion direction of the connection pipe 300. Preferably, when the rotator 420 rotates to the first position, the block just contacts and cooperates with the groove bottom, the connecting pipe 300 cannot be inserted into the rotator 420 any more, the operator can be reminded of the change of the operation hand feel of the connecting pipe 300, and the connecting pipe 300 is inserted in place at the moment, so that the connecting pipe can be used with safety.
The connection between the connection tube 300 and the valve seat 410 is screw-coupled, and the lengths of the first screw structure 441 and the second screw structure 311 need to correspond to the insertion stroke of the connection tube 300. In some preferred embodiments, when the connecting tube 300 is rotated to the first position, the second screw structure 311 should be rotated to the end of the first screw structure 441, and the second screw structure 311 cannot continue to rotate relative to the first screw structure 441, so that the operator can be reminded of the fact that the connecting tube 300 has been inserted in place by changing the operation feel of the connecting tube 300.
In some preferred embodiments, referring to fig. 3 and 5, the connection pipe 300 includes a pipe body 330 and a plug 320, the plug 320 is sleeved outside the pipe body 330, a plug gap is provided between an inner wall of the plug 320 and an outer wall of the pipe body 330, the pipe body 330 is used for inserting the rotator 420 through the valve core 430, and the valve seat 410 is inserted into the plug gap of the connection pipe 300 in case that the pipe body 330 is inserted into the rotator 420. The second screw structure 311 is disposed on the inner wall of the plug 320, the first screw structure 441 is disposed on the outer wall of the valve seat 410, and the plug 320 can be sleeved outside the valve seat 410 and screwed with the valve seat 410. The plug 320 is sleeved outside the valve seat 410, so that the sealing performance of the connection position between the connecting pipe 300 and the switching valve 400 can be improved, and the condition that the inner cavity 421 of the rotator 420 is communicated with the external environment is avoided. Also, the diameter of the plug 320 may be set relatively large, which may facilitate the operator's control of the plug 320 rotation.
When the rotating body 420 rotates, the rotation angle between the first position and the second position is fixed, and the rotation angle of the rotating body 420 is defined as a first rotation angle, and the first rotation angle is also the rotation angle of the connection pipe 300. The angle between the axis of the second opening 423 and the axis of the third opening 424 on the rotating body 420 is a first angle, which is denoted by a with reference to fig. 7 and 9. The first rotation angle is a or a plus at least one 360 degrees, and the first rotation angle may also be a group angle of a or a group angle of a plus at least one 360 degrees. In some embodiments of the present application, a is equal to 90 degrees, the first rotation angle is 90 degrees or 450 degrees, 810 degrees, etc., and the first rotation angle may be 270 degrees or 630 degrees, 990 degrees, etc.
The valve body 430 is installed in the inner cavity 421 of the rotary body 420 to isolate the first opening 422 from the second opening 423 and the third opening 424. The valve core 430 is generally an elastic structure, and after the connecting pipe 300 passes through the valve core 430, the valve core 430 can be tightly wrapped around the connecting pipe 300, so as to avoid air leakage. Referring to fig. 10 to 12, the valve body 430 is provided with a relief through hole 431 and a plurality of relief grooves 432. The connection pipe 300 can be penetrated through the escape through hole 431 to pass through the valve body 430. During the process that the connection pipe 300 passes through the valve body 430, the connection pipe 300 abuts against the valve body 430, so that the valve body 430 is deformed. The setting dodging groove 432 is located at the circumferential position of the dodging through hole 431, and reduces the structural strength of the valve core 430 at the circumferential position of the dodging through hole 431, so that the valve core 430 is easier to deform under the abutting action of the connecting pipe 300, the connecting pipe 300 is easier to pass through the valve core 430, and an operator is easier to install the connecting pipe 300 to the handle 110.
The escape groove 432 may be provided in an annular structure, coaxially provided with the escape through hole 431, as shown with reference to fig. 12. The escape groove 432 may be provided in plurality, and in the case of the annular structure of the escape groove 432, the plurality of escape grooves 432 are sequentially arranged in the axial direction of the valve body 430, as shown with reference to fig. 10 and 11. In other embodiments, the relief grooves 432 may be formed along the axial direction of the valve core 430, and the plurality of relief grooves 432 are uniformly distributed around the relief through hole 431.
An embodiment of the present application also provides an endoscope assembly, as shown with reference to fig. 13-17. Including the endoscope 100 provided by any of the embodiments described above, and further includes a connecting tube 300. The connection pipe 300 has a section detachably connected to the external connection port 111 and the other end for communication with the suction passage 210 of the functional device.
In some embodiments, the functional device may be a ureteral sheath, the ureteral sheath is configured as shown in fig. 18, and the ureteral sheath includes a sheath body 220 and a sheath tube 230, an intraductal space formed by the sheath tube 230 is a part of the suction channel 210, a negative pressure port 211 is disposed on the sheath body 220, the negative pressure port 211 communicates with the suction channel 210, and the connection tube 300 is generally directly connected to the position of the negative pressure port 211.
In use, the insertion portion 140 of the endoscope 100 is threaded into the sheath 230 of the ureteral sheath, with the intraductal space of the insertion portion 140 being part of the instrument channel 130. The suction valve 120 communicates with the suction channel 210 of the ureteral sheath by introducing a liquid into the target site through the instrument channel 130, and sucks out the substance at the target site through the gap between the sheath tube 230 and the insertion portion 140.
The endoscope 100 provided by the embodiment of the application can be a nephroscope, a sputum aspirator, a bronchoscope, a nephroscope, an esophagoscope, a gastroscope, a enteroscope, an otoscope, a rhinoscope, an stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.