A clip cartridge assembly, a clip applier, and a clip cartridge shaft drive method for a clip applier

Abstract

The first object of the present application is to provide a clip cartridge assembly, which comprises a clip cartridge shaft, a clip jaw and a tube body in linkage with the clip jaw in the direction of near and far, the proximal end of the clip cartridge shaft is inserted into the tube body, the clip cartridge shaft can move between the proximal end initial position of the clip cartridge shaft, the reset driving position and the distal end terminal position of the clip cartridge shaft arranged from near to far; the tube body has a linkage member extending from the inner wall of the tube body to the inside of the tube body; when the clip cartridge shaft is in the reset driving position, the clip cartridge shaft forms linkage with the tube body during the movement from the reset driving position to the distal end terminal position of the clip cartridge shaft; the movement of the clip cartridge shaft from the reset driving position to the proximal end initial position of the clip cartridge shaft can push the linkage member to move to the proximal side, so as to push the tube body to move to the proximal end initial position of the tube body. The automatic return of the clip jaw is realized. The second object of the present application is to provide a clip applier. The third object of the present application is to provide a clip cartridge shaft driving method of the clip applier.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a clip cartridge assembly, a clip applier and a clip cartridge shaft driving method of the clip applier. BACKGROUND

[0002] In a surgical procedure, in order to fully expose the surgical field of view, the blood vessels around the target tissue need to be ligated to stop bleeding. Hemostasis technology has become one of the core technologies of basic surgical operation techniques. Surgical operation of any part of the human body almost inevitably involves bleeding and hemostasis, and a clip applier is generally used to close the ligating clip for hemostasis.

[0003] In a surgical procedure, a doctor uses a clip applier to ligate the blood vessels around the target tissue. After the clip applier fires the clip, the clip jaw needs to be retracted to be removed from the blood vessel. At present, doctors often manually retract the clip applier to achieve the retraction of the clip jaw. However, during the manual retraction of the clip jaw, the operation is prone to shaking, and the clip jaw is easily entangled with the ligating clip, which may cause the risk of pulling the tissue and causing tissue damage. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the problems in the above-mentioned technology, the present application at least solves the problems to some extent. Therefore, the first object of the present application is to provide a clip cartridge assembly.

[0006] The second object of the present application is to provide a clip applier.

[0007] The third object of the present application is to provide a clip cartridge shaft driving method of the clip applier.

[0008] (II) Technical solutions

[0009] In order to achieve the above-mentioned objects, the main technical solutions adopted by the present application include:

[0010] The first object of the present application is to provide a clip cartridge assembly, which comprises a clip cartridge shaft, a clip jaw and a tube body linked with the clip jaw in the direction of near and far. The proximal end of the clip cartridge shaft is inserted into the tube body, and the clip cartridge shaft can move between the proximal end initial position of the clip cartridge shaft, the reset driving position and the distal end terminal position of the clip cartridge shaft arranged from near to far;

[0011] The tube body has a linkage member extending from the inner wall of the tube body to the inside of the tube body;

[0012] When the clip cartridge shaft is in the reset driving position, the clip cartridge shaft and the tube body are linked during the movement from the reset driving position to the distal end terminal position of the clip cartridge shaft. When the clip cartridge shaft moves from the reset driving position to the proximal end initial position of the clip cartridge shaft, the linkage member can be pushed to move proximally to push the tube body to move to the proximal end initial position of the tube body.

[0013] Optionally, the first reset member is linked between the cartridge shaft and the tube body, and the first reset member provides a pre-tightening force between the cartridge shaft and the tube body when the cartridge shaft is in the reset driving position.

[0014] Optionally, the cartridge assembly further comprises a first reset member; the cartridge shaft has a first blocking member extending from the outer wall of the cartridge shaft to the inner wall of the tube body, and the tube body has a second blocking member extending from the inner wall of the tube body to the inside of the tube body; the first reset member is arranged between the first blocking member and the second blocking member; and the first reset member provides a pre-tightening force between the first blocking member and the second blocking member when the cartridge shaft is in the reset driving position.

[0015] Optionally, the linkage member is located proximally to the reset driving position of the cartridge shaft when the cartridge shaft is in the reset driving position, and the proximal end of the cartridge shaft is adjacent to the linkage member; and the cartridge shaft and the tube body form linkage during movement from the reset driving position to the distal end termination position of the cartridge shaft.

[0016] Optionally, the first blocking member is located at the proximal end of the cartridge shaft, and the first blocking member is adjacent to the linkage member when the cartridge shaft is in the reset driving position; and the cartridge shaft and the tube body form linkage during movement from the reset driving position to the distal end termination position of the cartridge shaft.

[0017] Optionally, the linkage member is located at the proximal end of the tube body.

[0018] A second object of the present application is to provide a clip applier comprising the cartridge assembly and an adapter; the adapter comprises an insertion channel and a driving shaft arranged in the insertion channel, the proximal end of the tube body is slidably arranged in the insertion channel, and the tube body is movable between an initial position of the proximal end of the tube body and a distal end termination position of the tube body; the driving shaft is located proximally to the cartridge shaft, and the distal end of the driving shaft is connected to the proximal end of the cartridge shaft; and the driving shaft pulls the cartridge shaft to move proximally and drives the tube body to move proximally when the cartridge shaft is in the reset driving position.

[0019] Optionally, the cartridge assembly further comprises a ball; a first sliding groove is arranged on the outer wall of the tube body along the axial direction of the cartridge shaft, and a second sliding groove is arranged on the inner wall of the insertion channel along the axial direction of the cartridge shaft; the first sliding groove and the second sliding groove are arranged in correspondence in the circumferential direction, the internal space of the first sliding groove and the internal space of the second sliding groove are in communication, and together form a ball sliding groove for accommodating and sliding the ball; the ball is partially accommodated in the first sliding groove, and the ball is partially accommodated in the second sliding groove.

[0020] Optionally, the adapter further comprises a driving motor; the rotating main shaft of the driving motor is in transmission connection with the driving shaft, and the rotation of the rotating main shaft is converted into the linear motion of the driving shaft along the axial direction.

[0021] Optionally, the drive shaft comprises a barrel and a rod connected in sequence from proximal to distal, the axial direction of the barrel is consistent with the axial direction of the rotating main shaft, the proximal end of the rod is connected to the distal end of the barrel, and the distal end of the rod is fixedly connected to the proximal end of the clip cartridge shaft; an internal thread is formed in the proximal end of the inner wall of the barrel, the rotating main shaft is inserted into the barrel from the proximal end of the barrel, and the internal thread of the inner wall of the barrel is engaged with the external thread on the rotating main shaft; the rotating main shaft rotates to drive the barrel to move linearly.

[0022] The third object of the present application is to provide a clip cartridge shaft driving method of the clip applier.

[0023] The clip cartridge shaft advancing step comprises:

[0024] S11, when the adapter and the clip cartridge assembly of the applicator are connected, the tube body is located at the tube body distal end termination position; the driving mechanism drives the drive shaft to move to the drive shaft distal end termination position, and the drive shaft pushes the clip cartridge shaft to move to the clip cartridge shaft distal end termination position in the distal direction;

[0025] The clip cartridge shaft retracting step comprises:

[0026] S21, the driving mechanism drives the drive shaft located at the drive shaft distal end termination position to drive the clip cartridge shaft located at the clip cartridge shaft distal end termination position to move in the proximal direction until the clip cartridge shaft is retracted to the reset driving position, and at this time, the clip cartridge shaft and the tube body form linkage in the movement from the reset driving position to the clip cartridge shaft distal end termination position.

[0027] S22, the driving mechanism drives the drive shaft to continue to move in the proximal direction, and the drive shaft drives the clip cartridge shaft to pull the tube body to move in the proximal direction by pushing the linkage; the driving mechanism drives the drive shaft to move to the drive shaft proximal initial position, and the drive shaft pulls the tube body to move to the tube body proximal initial position through the clip cartridge shaft.

[0028] (Three) beneficial effects

[0029] The beneficial effects of the present application are:

[0030] 1, the clip cartridge assembly provided by the present application, when the clip cartridge shaft is located at the reset driving position, the clip cartridge shaft and the tube body form linkage in the movement from the reset driving position to the clip cartridge shaft distal end termination position, the clip cartridge shaft moves from the reset driving position to the clip cartridge shaft proximal initial position, can push the linkage to move in the proximal direction, to push the tube body to move to the tube body proximal initial position, realize the return of the clip.

[0031] 2、The clip applier provided by the application can ensure that the driving shaft drives the clip cartridge shaft to realize the clip feeding function and / or the firing function, and under the premise, through the linkage member arranged on the tube body, when the clip cartridge shaft is located at the reset driving position, the clip cartridge shaft and the tube body form linkage during the movement from the reset driving position to the distal end termination position of the clip cartridge shaft based on the linkage member, the clip cartridge shaft moves from the reset driving position to the proximal end initial position of the clip cartridge shaft, and the linkage member can be pushed to move proximally to push the tube body to move to the proximal end initial position of the tube body, so that the clip pliers are automatically retracted, and the surgical risk is greatly reduced.

[0032] That is, the clip applier provided by the embodiment can drive the clip cartridge shaft to realize the clip feeding function and / or the firing function by using the same driving shaft, and can drive the clip cartridge shaft to drive the clip pliers (the tube body) to realize automatic retraction after the clip is fired, that is, on the basis of the existing clip applier realizing the clip feeding function and / or the firing function, to realize the automatic retraction of the clip pliers, the clip applier only needs to add (improve) a small amount of structure, and the structure is simple and convenient to process.

[0033] 3、By arranging the first reset member between the first blocking member and the second blocking member, the clip cartridge shaft can be restored to the state when the clip applier starts to work after the clip pliers are retracted each time, so as to prepare for the next firing of the ligature clip, that is, the cycle of the clip cartridge shaft feeding and / or firing, firing reset and / or clip feeding retraction, and clip plier retraction is realized, and the clip applier can automatically retract the clip pliers after each firing of the ligature clip.

[0034] 4、The first blocking member is located at the proximal end of the clip cartridge shaft, the clip applier is compact in structure, and the size of the clip applier in the proximal-distal direction is avoided to be too large; meanwhile, when the clip cartridge shaft is located at the reset driving position, the first blocking member is adjacent to the linkage member, sufficient space is reserved for the connection between the driving shaft and the clip cartridge shaft, an additional blocking member does not need to be arranged on the clip cartridge shaft to cooperate with the reset driving position, and the structure of the clip cartridge shaft is simple.

[0035] 5、Through the cooperation of the first sliding groove, the ball and the second sliding groove, the sliding connection between the proximal end of the tube body and the insertion channel is realized, and on the basis of ensuring the sliding length of the tube body relative to the insertion channel, the size of the clip applier in the proximal-distal direction is greatly reduced, and the structure is compact. BRIEF DESCRIPTION OF DRAWINGS

[0036] The application is described by means of the following drawings:

[0037] Figure 1 It is a structural schematic view of the clip applier provided in the embodiment 1 of the application;

[0038] Figure 2 It is a top view of the clip applier provided in the embodiment 1 of the application;

[0039] Figure 3A cross-sectional view of the clip applier provided in Embodiment 1 of the present application, wherein the clip cartridge shaft is shown in the reset drive position and the tube is shown in the tube distal end termination position;

[0040] Figure 4 A partial cross-sectional view of the clip applier of Figure 3

[0041] Figure 5 A cross-sectional view of the clip applier provided in Embodiment 1 of the present application, wherein the drive shaft is shown in the drive shaft proximal end initial position, the clip cartridge shaft is shown in the clip cartridge shaft proximal end initial position, and the tube is shown in the tube proximal end initial position;

[0042] Figure 6 A partial cross-sectional view of the clip applier of Figure 5

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 1: adapter;

[0045] 11: insertion channel;

[0046] 111: second sliding groove;

[0047] 12: drive shaft;

[0048] 121: barrel; 122: rod;

[0049] 13: drive motor;

[0050] 131: rotating main shaft;

[0051] 2: clip cartridge assembly;

[0052] 21: clip cartridge shaft;

[0053] 211: first blocking member; 212: axial insertion hole; 213: accommodating cavity; 214: limiting block;

[0054] 22: tube;

[0055] 221: linkage; 222: second blocking member; 223: first sliding groove;

[0056] 23: clip;

[0057] 24: first reset member;

[0058] 25: ball;

[0059] 261: push clip;

[0060] 27: firing mechanism;

[0061] 28: second reset member; ​​

[0062] 29: Third reset component. Detailed Implementation

[0063] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, "upper" and "lower" are used interchangeably with respect to... Figure 2 Using the orientation as a reference, the definition of "near" and "far" used in this article is: when using it, the direction from the doctor to the patient is the direction from near to far.

[0064] Example 1

[0065] like Figures 1 to 6 As shown, this embodiment provides a clamp applicator, which includes an adapter 1 and a clamping assembly 2.

[0066] The clamping assembly 2 includes a clamping shaft 21, a tube body 22, and a clamp 23.

[0067] Clamp 23 is located on the distal side of tube body 22. The proximal end of clamp 23 is connected to the distal end of tube body 22 via a connector, allowing tube body 22 and clamp 23 to move in tandem in the proximal direction. That is, when tube body 22 moves distally, clamp 23 also moves distally; similarly, when tube body 22 moves proximally, clamp 23 also moves proximally. Tube body 22 can be the outer shell of the proximal end of clamping assembly 2, or it can be a component inside the proximal outer shell of clamping assembly 2. Tube body 22 itself can be a single piece or a separate piece. One of the functions of tube body 22 is to provide a limiting structure on its inner wall to limit the movement position of the moving parts. The proximal end of the clamping shaft 21 is inserted into the tube body 22. The clamping shaft 21 can move between the initial position of the proximal end of the clamping shaft, the reset drive position, and the distal end termination position of the clamping shaft arranged from near to far. The tube body 22 has a linkage 221 extending from the inner wall of the tube body 22 into the interior of the tube body 22. When the clamping shaft 21 is in the reset drive position, the clamping shaft 21 and the tube body 22 form a linkage during the movement from the reset drive position to the distal end termination position of the clamping shaft. When the clamping shaft moves from the reset drive position to the initial position of the proximal end of the clamping shaft, it can push the linkage to move proximally, thereby pushing the tube body to the initial position of the proximal end of the tube body.

[0068] The adapter 1 includes an insertion channel 11 and a drive shaft 12 passing through the insertion channel 11.

[0069] The proximal end of the tube body 22 is inserted into the insertion channel 11, and the proximal end of the tube body 22 is slidably connected to the insertion channel 11. The tube body 22 can move between the initial position of the proximal end of the tube body and the termination position of the distal end of the tube body. The drive shaft 12 is located near the clamping shaft 21, and the distal end of the drive shaft 12 is connected to the proximal end of the clamping shaft 21. When the clamping shaft 21 is in the reset drive position, the drive shaft 12 pulls the clamping shaft 21 to move proximally, thereby moving the tube body 22 to the proximal end.

[0070] With the clip applier of the present example, when the clip applier starts to work, the tube 22 is close to the tube distal end termination position, the clip cartridge shaft 21 is close to the reset driving position, and in the best case, the tube 22 is at the tube distal end termination position and the clip cartridge shaft 21 is at the reset driving position. During the working process of the clip applier, the drive shaft 12 first pushes the clip cartridge shaft 21 to move distally to the clip cartridge shaft distal end termination position, to complete the clip feeding action of the clip feeding mechanism (i.e. to feed the ligature clip into the clip pliers) and / or the firing action of the firing mechanism (i.e. to make the clip pliers close to make the ligature clip in the clip pliers close); then the drive shaft 12 pulls the clip cartridge shaft 21 to move proximally to the reset driving position, to complete the reset action of the firing mechanism (i.e. to make the clip pliers open) and / or the return action of the clip feeding mechanism (i.e. to reset the clip feeding mechanism for the next clip feeding); then the drive shaft 12 continues to pull the clip cartridge shaft 21 to move proximally, and due to the existence of the linkage 221 and the sliding connection of the proximal end of the tube 22 with the insertion channel 11, the clip cartridge shaft 21 will drive the tube 22 to move proximally, i.e. to drive the clip pliers 23 to move proximally. It can be seen that the clip applier of the present example, while ensuring that the drive shaft 12 drives the clip cartridge shaft 21 to realize the clip feeding function and / or the firing function, also realizes that the drive shaft 12 drives the clip cartridge shaft 21 to drive the tube 22 (i.e. to drive the clip pliers) to move back, thereby realizing the automatic return of the clip pliers 23, greatly reducing the risk of surgery. That is, the clip applier of the present example uses the same drive shaft 12 to drive the clip cartridge shaft to realize the clip feeding function and / or the firing function, and to drive the clip cartridge shaft 21 to drive the clip pliers 23 (tube 22) to realize the automatic return after the clip is fired. That is, on the basis of the existing clip applier realizing the clip feeding function and / or the firing function, to realize the automatic return of the clip pliers 23, the clip applier of the present example only needs to add (improve) a small amount of structure, which is simple in structure and easy to process.

[0071] Preferably, referring to Figure 4 and Figure 6 , when the clip cartridge shaft 21 is at the reset driving position, the linkage 221 is located proximally of the reset driving position, and the proximal end of the clip cartridge shaft 21 is next to the linkage 221, so that the clip cartridge shaft 21 and the tube 22 are linked during the movement from the reset driving position to the clip cartridge shaft distal end termination position. In this way, the linkage 221 is matched with the proximal end of the clip cartridge shaft 21, so that the clip cartridge shaft 21 and the tube 22 are linked during the movement from the reset driving position to the clip cartridge shaft distal end termination position, making the clip cartridge shaft 21 simple in structure and easy to process. Further, in the present example, the linkage 221 is located at the proximal end of the tube 22. In this way, the structure is compact, avoiding the clip applier being too large in the distal-proximal direction.

[0072] Preferably, referring to Figure 4 and Figure 6The clip cartridge assembly further comprises a first reset member 24. The proximal end of the clip cartridge shaft 21 has a first blocking member 211 extending from the outer wall of the clip cartridge shaft 21 to the inner wall of the tube 22. The tube 22 further has a second blocking member 222 extending from the inner wall of the tube 22 to the inside of the tube 22, and the second blocking member 222 is located distally to the first blocking member 211. The first reset member 24 is arranged between the first blocking member 211 and the second blocking member 222, with the first end of the first reset member 24 abutting against the first blocking member 211 and the second end of the first reset member 24 abutting against the second blocking member 222. When the clip cartridge shaft 21 is located at the reset driving position, the first reset member 24 provides a pre-tightening force between the first blocking member 211 and the second blocking member 222. Thus, the first reset member 24 is linked between the clip cartridge shaft 21 and the tube 22, and when the clip cartridge shaft 21 is located at the reset driving position, the first reset member 24 provides a pre-tightening force between the clip cartridge shaft 21 and the tube 22.

[0073] The clip applier thus arranged, when the clip applier starts to work, the tube 22 is close to the tube distal end termination position, and the clip cartridge shaft 21 is close to the clip cartridge shaft proximal end initial position. In the best case, the tube 22 is located at the tube distal end termination position, and the clip cartridge shaft 21 is located at the clip cartridge shaft proximal end initial position. It is preferred that the tube 22 is located at the tube distal end termination position when the clip applier starts to work, because if the tube 22 is not located at the tube distal end termination position, in the subsequent working process, the drive shaft 12 first pushes the clip cartridge shaft 21 to move distally. Since the first reset member 24 provides a pre-tightening force between the first blocking member 211 and the second blocking member 222, the clip cartridge shaft 21 will drive the tube 22 to move distally at the same time, thus driving the clip jaw 23 to move distally at the surgical positioning position beyond the expectation of the doctor, and there is a risk of the clip jaw 23 pricking the tissue.

[0074] The working process of the clip applier is described below by taking the optimal position of the tube 22 and the clip cartridge shaft 21 when the clip applier starts working as an example. During the working process of the clip applier, the drive shaft 12 first pushes the clip cartridge shaft 21 to move distally to the distal end termination position of the clip cartridge shaft, to complete the clip feeding action of the clip feeding mechanism and / or the firing action of the firing mechanism. During this process, the first return member 24 is continuously compressed from the initial state to the termination state. Then the drive shaft 12 pulls the clip cartridge shaft 21 to move proximally to the reset driving position, to complete the reset action of the firing mechanism and / or the return action of the clip feeding mechanism. During this process, the first return member 24 is continuously stretched from the termination state to the initial state, and the tube 22 does not move due to the force of the first return member 24 on the tube 22. Then the drive shaft 12 continues to pull the clip cartridge shaft 21 to move proximally. Since the linkage member 221 prevents the clip cartridge shaft 21 from moving proximally relative to the tube 22, the clip cartridge shaft 21 will drive the tube 22 to move proximally, i.e., drive the clip jaws 23 to move proximally, until the tube 22 moves to the proximal end initial position. During this process, the first return member 24 always remains in the initial state. After the clip jaws 23 are returned, they still need to move distally to restore the state of the clip applier when it starts working, to prepare for the next firing of the ligating clip. During this process, the drive shaft 12 pushes the clip cartridge shaft 21 to move distally. Since the first return member 24 provides a pre-tightening force between the second blocking member 211 and the third blocking member 222, the clip cartridge shaft 21 will drive the tube 22 to move distally together, until the tube 22 moves to the distal end termination position, restoring the state of the clip applier when it starts working. As can be seen, by arranging the first return member 24 between the second blocking member 211 and the third blocking member 222, the clip cartridge shaft 21 can restore to the state of the clip applier when it starts working after each return of the clip jaws 23, and then continue to close and fire, to prepare for the next firing of the ligating clip, i.e., to realize the circulation of the clip cartridge shaft feeding and / or firing, firing reset and / or clip feeding return, and clip jaw return, so that the clip applier can automatically return the clip jaws after each firing of the ligating clip.

[0075] In this embodiment, the installation of the first return member by locating the second blocking member 222 distally of the first blocking member 211 is only preferred. It can be imagined that locating the second blocking member 222 distally of the first blocking member 211 can achieve similar effects.

[0076] Further, in the embodiment, the first blocking member 211 is an annular blocking member arranged around the cartridge shaft 21, the second blocking member 222 is an annular blocking member arranged around the inner wall of the tube body 22, and the first reset member 24 comprises a spring sleeved on the cartridge shaft 21. Further, the first blocking member 211 is located at the proximal end of the cartridge shaft 21, and when the cartridge shaft 21 is located at the reset driving position, the first blocking member 211 is in close proximity to the linkage 221, thereby preventing the cartridge shaft 21 from continuing to move proximally. The first blocking member 211 is located at the proximal end of the cartridge shaft 21, so the structure is compact and the size of the clip applier in the proximal-distal direction is avoided from being too large; when the cartridge shaft 21 is located at the reset driving position, the first blocking member 211 is in close proximity to the linkage 221, thereby reserving sufficient space for the connection between the drive shaft 12 and the cartridge shaft 21, and at the same time, there is no need to additionally arrange a blocking member on the cartridge shaft 21 to cooperate with the linkage 221, so the structure of the cartridge shaft is simple.

[0077] Preferably, referring to Figure 4 and Figure 6 , the cartridge assembly 2 further comprises a ball 25, a first sliding groove 223 along the axial direction of the cartridge shaft 21 is formed on the outer wall of the tube body 22 at the proximal end, and a second sliding groove 111 along the axial direction of the cartridge shaft 21 is formed on the inner wall of the insertion channel 11; the first sliding groove 223 and the second sliding groove 111 are correspondingly arranged in the circumferential direction, the internal space of the first sliding groove 223 and the internal space of the second sliding groove 111 are in communication, and together form a ball sliding groove for accommodating and sliding the ball 25, that is, the ball 25 is partially accommodated in the first sliding groove 223 and the ball 25 is partially accommodated in the second sliding groove 111. The sliding connection between the proximal end of the tube body 22 and the insertion channel 11 is realized, and at the same time, through the cooperation of the first sliding groove 223, the ball 25 and the second sliding groove 111, the size of the clip applier in the proximal-distal direction is greatly reduced on the basis of ensuring the sliding length of the tube body 22 relative to the insertion channel 11, and the structure is compact.

[0078] Further, in the embodiment, the first sliding groove 223 and the second sliding groove 111 are waist-shaped grooves.

[0079] Further, the clip applier comprises at least two ball sliding grooves arranged uniformly in the circumferential direction. The sliding of the tube body 22 relative to the insertion channel 11 is more stable. In the embodiment, the clip applier comprises two ball sliding grooves arranged at 180° in the circumferential direction. Of course, the clip applier comprising two ball sliding grooves arranged at 180° in the circumferential direction is only preferred; conceivably, the clip applier comprises three ball sliding grooves arranged uniformly in the circumferential direction (two adjacent ball sliding grooves are at 120° in the circumferential direction), or the clip applier comprises four ball sliding grooves arranged uniformly in the circumferential direction (two adjacent ball sliding grooves are at 90° in the circumferential direction), which can also achieve the effect of making the sliding of the tube body 22 relative to the insertion channel 11 more stable.

[0080] The adapter 1 further comprises a driving mechanism connected with the driving shaft and driving the driving shaft to move along its axial direction. The driving mechanism can be any mechanism capable of achieving its function. Preferably, the driving mechanism comprises a driving motor 13, a rotating main shaft 131 of the driving motor 13 is in a "screw nut" transmission relationship with the driving shaft 12, and the rotation of the rotating main shaft 131 is converted into the linear motion of the driving shaft 12 along the axial direction. Further preferably, in the embodiment, the driving shaft 12 comprises a barrel 121 and a rod 122 connected in sequence from the proximal end to the distal end, the axial direction of the barrel 121 is consistent with the axial direction of the rotating main shaft 131, the proximal end of the rod 122 is connected to the distal end of the barrel 121, the distal end of the rod 122 is fixedly connected to the proximal end of the cartridge shaft 21, and the barrel 121 and the rod 122 can be an integral piece or separate pieces; an internal thread is formed on the proximal end of the inner wall of the barrel 121, the rotating main shaft 131 is inserted into the barrel 121 from the proximal end of the barrel 121, and the internal thread on the inner wall of the barrel 121 is engaged with the external thread on the rotating main shaft 131; the rotating main shaft 131 rotates to drive the barrel 121 to move linearly. In this way, the size of the clip applier in the proximal-distal direction is reduced, and the structure is compact.

[0081] Further, in the embodiment, an axial insertion hole 212 is formed on the proximal end of the cartridge shaft 21, and the distal end of the rod 122 is inserted into the axial insertion hole 212 and fixedly connected to the proximal end of the cartridge shaft 21 by pin connection.

[0082] In addition, in the embodiment, the cartridge assembly 2 further comprises a pusher mechanism and a firing mechanism 27, and the pusher mechanism and the firing mechanism 27 are at least partially located in the tube 22. The pusher mechanism is used to feed the clips to the clip appliers 23, and the firing mechanism 27 is used to control the clip appliers 23 to close and open, and the clips are fired when the clip appliers 23 are closed.

[0083] During the movement of the cartridge shaft 21 from the reset driving position to the cartridge shaft distal end termination position, the pusher mechanism is first driven to move in the distal direction (the position at which the pusher mechanism is initially acted upon is the feeding position), until the distal-most clip is fed to the clip appliers 23, and then the firing mechanism 27 is driven to move in the distal direction (the position at which the firing mechanism is initially acted upon is the firing position), until the cartridge shaft 21 moves to the cartridge shaft distal end termination position, the clip appliers 23 are closed, and the firing is formed. In summary, the position at which the cartridge shaft 21 pushes the pusher mechanism to start moving is located distally of the reset driving position, the position at which the cartridge shaft 21 pushes the firing mechanism 27 to start moving is located distally of the position at which the cartridge shaft 21 pushes the pusher mechanism to start moving, and the position at which the cartridge shaft 21 stops driving the firing mechanism 27 is located at the cartridge shaft distal end termination position.

[0084] Among them, referring to Figure 4 and Figure 6The clamping mechanism includes a clamping piece 261 extending from a proximal end to a distal end, the proximal end of which is an upwardly bent portion; a receiving cavity 213 is provided at the end of the clamping shaft 21 opposite to the axial insertion hole 212, and a limiting block 214 extending toward the bottom of the receiving cavity 213 is provided at the distal end of the top of the receiving cavity 213; the bent portion of the clamping piece 261 is fastened to the lower part of the limiting block 214. The clamping assembly 2 also includes a second reset member 28, which is received in the receiving cavity 213. The first end of the second reset member 28 abuts against the proximal end of the receiving cavity 213, and the second end of the second reset member 28 abuts against the bent portion of the clamping piece 261. When the clamping shaft 21 is in the initial position at the proximal end of the clamping shaft, the second reset member 28 provides a preload force between the proximal end of the receiving cavity 213 and the bent portion of the clamping piece 261.

[0085] The second reset member 28 maintains its initial state as the clamping shaft 21 drives the push clamping mechanism (push clamp plate 261) to move towards the distal end. After the push clamping mechanism (push clamp plate 261) delivers the farthest clamp to the clamp 23, the push clamp plate 261 is blocked by the limiting mechanism (not shown in the figure) from continuing to move towards the distal end. Therefore, the second reset member 28 stores force as the clamping shaft 21 drives the firing mechanism 27 to move towards the distal end, and the limiting block 214 separates from the bent portion of the push clamp plate 261. The stored force can be a deformation force generated by compression or a deformation force generated by tension. The second reset member 28 can be a tension spring, a compression spring, a rubber component, etc.

[0086] Among them, see Figure 4 and Figure 6 The firing mechanism 27 is located distal to the third blocking member 222 and is disposed adjacent to the third blocking member 222. The magazine assembly 2 also includes a third reset member 29, which is disposed between the firing mechanism 27 and the tube body 22. The third reset member 29 stores force during the movement of the magazine shaft 21 relative to the tube body 22 from the initial position near the magazine shaft to the termination position near the magazine shaft, and drives the firing mechanism 27 to reset during the movement of the magazine shaft 21 relative to the tube body 22 from the termination position near the magazine shaft to the initial position near the magazine shaft. The stored force can be a deformation force generated by compression or tension. The third reset member 29 can be a tension spring, a compression spring, a rubber component, etc.

[0087] Example 2

[0088] This embodiment uses the clamping shaft driving method of the clamping device in Embodiment 1, including a clamping shaft advancing step and a clamping shaft pulling back step.

[0089] The clamping shaft advancing step includes:

[0090] S11, when the adapter 1 of the applicator and the cartridge assembly 2 are connected, the cartridge shaft 21 is located at the reset driving position, and the tube body 22 is located at the tube body distal end termination position. The driving mechanism drives the driving shaft 12 to move to the driving shaft distal end termination position, and the driving shaft 12 pushes the cartridge shaft 21 to move to the cartridge shaft distal end termination position.

[0091] The cartridge shaft pulling back step comprises:

[0092] S21, the driving mechanism drives the driving shaft 12 located at the driving shaft distal end termination position to drive the cartridge shaft 21 located at the cartridge shaft distal end termination position to move in the proximal direction until the cartridge shaft 21 is pulled back to the reset driving position. At this time, the cartridge shaft 21 and the tube body 22 form linkage during movement from the reset driving position to the cartridge shaft distal end termination position.

[0093] S22, the driving mechanism drives the driving shaft 12 to continue to move in the proximal direction, and the driving shaft 12 drives the cartridge shaft 21 to pull the tube body 22 to move in the proximal direction by pushing the linkage 211. The driving mechanism drives the driving shaft 12 to move to the driving shaft proximal end initial position, and the driving shaft 12 pulls the tube body 22 to move to the tube body proximal end initial position through the cartridge shaft 21.

[0094] In summary, the cartridge shaft driving method of the clip applier provided in the embodiment not only ensures that the driving shaft drives the cartridge shaft to achieve the clip feeding function and / or the firing function, but also achieves that the driving shaft drives the cartridge shaft to drive the tube body (i.e., the driving of the clip jaw) to perform the retraction movement, thereby achieving the automatic retraction of the clip jaw and greatly reducing the surgical risk.

[0095] Embodiment 3

[0096] The main difference between the embodiment and the embodiment 1 is that the cooperation of the first sliding groove 223, the ball 25 and the second sliding groove 111 is replaced by that the inner wall of the insertion channel 11 is provided with a sliding rail in the axial direction of the cartridge shaft 21, and the proximal end of the outer wall of the tube body 22 is provided with a sliding block accommodated in the sliding rail. The sliding connection between the proximal end of the tube body 22 and the insertion channel 11 is achieved.

[0097] It can be imagined that the proximal end of the outer wall of the tube body 22 is provided with a sliding rail in the axial direction of the cartridge shaft 21, and the inner wall of the insertion channel 11 is provided with a sliding block accommodated in the sliding rail. The sliding connection between the proximal end of the tube body 22 and the insertion channel 11 can also be achieved.

[0098] The same as the embodiment 1 will not be repeated.

[0099] It should be understood that the embodiments of the present application described above are merely intended to illustrate the technical route and features of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, but the present application is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present application should be covered within the protection scope of the present application.

Claims

1. A cartridge assembly, characterized in that, the cartridge assembly (2) comprises a cartridge shaft (21), a cartridge jaw (23) and a tube body (22) linked with the cartridge jaw (23) in the proximal-distal direction, the proximal end of the cartridge shaft (21) is inserted into the tube body (22), and the cartridge shaft (21) is movable between a proximal end initial position of the cartridge shaft, a reset driving position and a distal end terminal position of the cartridge shaft arranged from proximal to distal; the tube body (22) has a linkage (221) extending from the inner wall of the tube body (22) to the inside of the tube body (22); when the cartridge shaft (21) is in the reset driving position, the cartridge shaft (21) is linked with the tube body (22) during movement from the reset driving position to the distal end terminal position of the cartridge shaft; and movement of the cartridge shaft from the reset driving position to the proximal end initial position of the cartridge shaft can push the linkage to move proximally to push the tube body (22) to move to a proximal end initial position of the tube body. the cartridge assembly (2) further comprises a first reset member (24); the cartridge shaft (21) has a first blocking member (211) extending from the outer wall of the cartridge shaft (21) to the inner wall of the tube body (22), and the tube body (22) further has a second blocking member (222) extending from the inner wall of the tube body (22) to the inside of the tube body (22); the first reset member (24) is arranged between the first blocking member (211) and the second blocking member (222); when the cartridge shaft (21) is in the reset driving position, the first reset member (24) provides a pre-tightening force between the first blocking member (211) and the second blocking member (222). 2.The cartridge assembly according to claim 1, characterized in that, when the cartridge shaft (21) is in the reset driving position, the linkage (221) is proximal to the reset driving position, the proximal end of the cartridge shaft (21) is adjacent to the linkage (221), and the cartridge shaft (21) is linked with the tube body (22) during movement from the reset driving position to the distal end terminal position of the cartridge shaft. 3.The cartridge assembly according to claim 2, characterized in that, the first blocking member (211) is located at the proximal end of the cartridge shaft (21), and when the cartridge shaft (21) is in the reset driving position, the first blocking member (211) is adjacent to the linkage (221), and the cartridge shaft (21) is linked with the tube body (22) during movement from the reset driving position to the distal end terminal position of the cartridge shaft.

4. The cartridge assembly of claim 1, wherein, the linkage (221) is located at the proximal end of the tube body (22).

5. A clip applier, comprising: the cartridge assembly according to any one of claims 1-4 and an adapter; the adapter (1) comprises an insertion channel (11) and a driving shaft (12) passing through the insertion channel (11), the proximal end of the tube body (22) is slidably inserted into the insertion channel (11), and the tube body (22) is movable between a proximal end initial position and a distal end terminal position of the tube body. The driving shaft (12) is located proximally to the clip cartridge shaft (21), and a distal end of the driving shaft (12) is connected to a proximal end of the clip cartridge shaft (21); When the clip cartridge shaft (21) is located at the reset driving position, the driving shaft (12) pulls the clip cartridge shaft (21) to move proximally, and drives the tube body (22) to move proximally.

6. The clip applier of claim 5, wherein: The clip cartridge assembly (2) further comprises a ball (25); A first sliding groove (223) in the axial direction of the clip cartridge shaft (21) is formed on the outer wall of the tube body (22), and a second sliding groove (111) in the axial direction of the clip cartridge shaft (21) is formed on the inner wall of the insertion channel (11); the first sliding groove (223) and the second sliding groove (111) are correspondingly arranged in the circumferential direction, and the inner space of the first sliding groove (223) and the inner space of the second sliding groove (111) are in communication, together forming a ball sliding groove for accommodating and sliding the ball (25); The ball (25) is partially accommodated in the first sliding groove (223), and the ball (25) is partially accommodated in the second sliding groove (111).

7. The clip applier of claim 5, wherein: The adapter (1) further comprises a driving motor; The rotating main shaft (131) of the driving motor (13) is in transmission connection with the driving shaft (12), and the rotation of the rotating main shaft (131) is converted into the linear motion of the driving shaft (12) in the axial direction.

8. The clip applier of claim 7, wherein: The driving shaft (12) comprises a barrel (121) and a rod (122) connected in sequence from proximal to distal, the axial direction of the barrel (121) is consistent with the axial direction of the rotating main shaft (131), the proximal end of the rod (122) is connected to the distal end of the barrel (121), and the distal end of the rod (122) is fixedly connected to the proximal end of the clip cartridge shaft (21); An inner thread is formed on the inner wall of the proximal end of the barrel (121), the rotating main shaft (131) is inserted into the barrel (121) from the proximal end of the barrel (121), and the inner thread on the inner wall of the barrel (121) is in engagement with the outer thread on the rotating main shaft (131); the rotating main shaft (131) rotates to drive the barrel (121) to move linearly.

9. A method of driving the clip cartridge shaft of a clip applier as in any of claims 5-8, wherein, The method comprises a clip cartridge shaft advancing step and a clip cartridge shaft pulling back step; The clip cartridge shaft advancing step comprises: S11, when the adapter (1) of the applicator and the clip cartridge assembly (2) are connected, the tube body (22) is located at the tube body distal end termination position; the driving mechanism drives the driving shaft (12) to move to the driving shaft distal end termination position, and the driving shaft (12) drives the clip cartridge shaft (21) to move distally to the clip cartridge shaft distal end termination position; The clip cartridge shaft pulling back step comprises: S21, the driving mechanism drives the driving shaft (12) at the distal end of the driving shaft to drive the clamping bin shaft (21) at the distal end of the clamping bin shaft (21) to move in the proximal direction until the clamping bin shaft (21) is pulled back to the reset driving position, at this time the clamping bin shaft (21) and the pipe body (22) form linkage during the movement from the reset driving position to the distal end of the clamping bin shaft; S22, the driving mechanism drives the driving shaft (12) to continue to move in the proximal direction, the driving shaft (12) drives the clamping bin shaft (21) to pull the pipe body (22) to move in the proximal direction by pushing the linkage; the driving mechanism drives the driving shaft (12) to move to the proximal end of the initial position of the driving shaft, and the driving shaft (12) pulls the pipe body (22) to move to the proximal end of the initial position of the pipe body through the clamping bin shaft (21).

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