WO2021078091A1

WO2021078091A1 - Clip applier shaft assembly and medical surgical clip applier

Info

Publication number: WO2021078091A1
Application number: PCT/CN2020/121836
Authority: WO
Inventors: 张翚; 徐荣华
Original assignee: 苏州英途康医疗科技有限公司
Priority date: 2019-10-25
Filing date: 2020-10-19
Publication date: 2021-04-29
Also published as: CN112704539A; CN112704539B

Abstract

Provided are a clip applier shaft assembly and a medical surgical clip applier. The clip applier shaft assembly (100) comprises a reset member (4). When a main shaft (1) moves towards a head end, at least part of the reset member (4) deforms and generates a force that enables the reset member (4) to restore to the original shape. The reset member (4) comprises a first reset member body (41) located between the main shaft (1) and a clip-pushing assembly (2), a second reset member (42) located between the main shaft (1) and a pipe body (10), and a third reset member located between a firing assembly (3) and the pipe body (10). According to the clip applier shaft assembly and the medical surgical clip applier, the functions of clip pushing, clip delivery, cocking, and device resetting can be completed by means of only controlling the main shaft, thereby simplifying the operation process and reducing surgical risks.

Description

Clip applier shaft assembly and medical operation clip applier

This application claims the priority of the Chinese patent application No. 201911021573.1 filed on October 25, 2019, and the contents of the above-mentioned Chinese patent application are quoted here in full as a part of this application.

Technical field

The embodiments of the present disclosure relate to a clip applier shaft assembly and a medical surgical clip applier.

Background technique

Endoscopic surgical staplers and surgical clip appliers are used in many different and useful surgical procedures. The tube or cannula device is usually extended into the patient through an entrance incision to provide an access port. This port allows the surgeon to use a trocar to insert many different surgical instruments through it and to perform surgical procedures away from the incision.

Summary of the invention

According to an embodiment of the present disclosure, there is provided a clip applier shaft assembly having opposite head and ends, and comprising: a tube body with a cavity; and a spindle at least partially housed in the tube body, which is arranged close to The end; a clamping bin assembly, including a plurality of surgical clips, a clamping bin for accommodating the plurality of surgical clips, and a clamp, the clamp being arranged at the end of the clamping bin close to the head end In the axial direction from the distal end to the head end, the multiple surgical clips are sequentially arranged in the clamping compartment; push the clip assembly, the push clip assembly is oriented by the main shaft The head end is pushed to push the surgical clip into the clamp; and the firing assembly is pushed toward the head end by the main shaft to push the surgical clamp placed in the clamp Clamp for firing. The clip applier shaft assembly further includes a resetting member, when the main shaft moves to the head end, at least part of the resetting member deforms and generates a force to restore it; the resetting member includes a reset member located at the A first reset part between the main shaft and the push clamp assembly, a second reset part between the main shaft and the tube body, and a third reset part between the firing assembly and the tube body .

For example, the pipe body is provided with a first limiting portion and a second limiting portion in its interior, the first limiting portion is disposed closer to the end relative to the second limiting portion, and the first limiting portion A limited cavity is formed between the position portion and the second limit portion, and at least part of the firing assembly can only move in the limit cavity.

For example, when the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the main shaft is disposed close to the end relative to the first limiting part; the second resetting part Is arranged between the first limit part and the main shaft or between the second limit part and the main shaft; when the main shaft moves to the head end, the second reset The files are compressed.

For example, when the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the main shaft is disposed close to the head end relative to the first limiting portion; the second reset Is arranged between the first limiting portion and the main shaft and connected with the first limiting portion and the main shaft respectively; when the main shaft moves to the head end, the second reset Pieces are stretched.

For example, the third resetting member is arranged between the second limiting portion and the firing assembly; when the firing assembly moves to the head end, the third resetting member is compressed.

For example, the third reset member is arranged between the first limiting part and the firing assembly and is connected to the first limiting part and the firing assembly; when the firing assembly moves to the head end At this time, the third reset member is stretched.

For example, the tube body is provided with a second limiting portion inside; when the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the main shaft is relative to the second The limiting part is arranged close to the end; the second resetting part is arranged between the main shaft and the second limiting part, and the third resetting part is arranged between the firing assembly and the second limiting part When the main shaft moves to the head end, the second reset member is compressed; when the firing assembly moves to the head end, the third reset member is compressed.

For example, the tube body is provided with a first limiting portion inside; when the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the main shaft is relative to the first The limiting part is arranged close to the end; the second resetting part is arranged between the main shaft and the first limiting part, and the third resetting part is arranged between the firing assembly and the first limiting part Part and respectively connected with the firing assembly and the first limiting part; when the main shaft moves to the head end, the second resetting part is compressed; when the firing assembly moves toward the When the head end moves, the third resetting member is stretched.

For example, the tube body is provided with a first limiting portion inside; when the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the main shaft is relative to the first The limiting part is arranged close to the head end; the second resetting member is arranged between the main shaft and the first limiting part and connected with the main shaft and the first limiting part respectively, and the first The three restoring pieces are arranged between the firing assembly and the first limiting part and connected with the firing assembly and the first limiting part respectively; when the main shaft moves to the head end, the The second resetting member is stretched; when the firing assembly moves to the head end, the third resetting member is stretched.

For example, the push-clamp assembly includes a push-clamp rod and a clamp-feeding piece provided on the push-clamp rod, and the clamp-feeding piece includes a clamp-feeding portion provided at its head end; When the push clip assembly does not push the firing assembly in the initial state, the clip delivery part is located at the rear end of the first surgical clip closest to the head end among the plurality of surgical clips; and when the clip is being delivered , The main shaft moves to the head end to push the clamp push rod, and the clamp feed piece moves to the head end along with the clamp push rod, so that the clamp feed part pushes the first A surgical clip is fed into the clamp.

For example, the push clip assembly further includes a sliding block, and a sliding groove for the sliding of the sliding block is provided on the clamping bin, and in the axial direction from the end to the head end, the length of the sliding groove is It is equal to the length of one surgical clip; when the clip is sent, the slider slides from the end of the chute to the head end of the chute; after the clip is completed, the slider is held against the The head end of the chute is used to prevent the push-clamping rod from continuing to move to the head end.

For example, the firing assembly includes a firing shaft, and the main shaft pushes the firing shaft to move the head end to close the jaws to complete firing.

For example, the firing shaft is provided with a side wing portion at its end, and the third resetting member connects or abuts the side wing portion.

For example, the pipe body is provided with a first limiting portion and a second limiting portion in its interior, the first limiting portion is disposed closer to the end relative to the second limiting portion, and the first limiting portion A limited cavity is formed between the positioning portion and the second limiting portion, and at least part of the firing assembly can only move in the limiting cavity; the side wing portion of the firing shaft is arranged in the limiting cavity, The third resetting member is arranged between the second limiting part and the side wing part of the firing assembly; when the firing assembly moves to the head end, the third resetting part is compressed; and When the main shaft neither pushes the push clamp assembly nor pushes the firing assembly in the initial state, the side wing part contacts the first limiting part.

For example, in the initial state of the spindle neither pushing the push clamp assembly nor the firing assembly, a preset distance is set between the spindle and the firing shaft, and the length of the preset distance is greater than Or equal to the length of one surgical clip.

For example, the main shaft includes: an accommodating tube extending in the axial direction from the end to the head end, at least part of the first resetting member is accommodated in the accommodating tube; side wing parts are provided in the accommodating tube. At the end of the accommodating tube, the side wing portion of the main shaft resists or is connected to the second resetting member, and the side wing portion of the main shaft pushes the firing assembly to move to the head end.

According to an embodiment of the present disclosure, there is provided a clip applier for medical surgery, including an adapter and the clip applier shaft assembly as described above, wherein the adapter provides power to drive the spindle, so that the spindle pushes the push clip The assembly and the firing assembly move toward the head end.

For example, the adapter includes a handle assembly and a working head detachably connected to the handle assembly, and the clip applier shaft assembly is detachably connected to the working head.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure, rather than limit the present disclosure.

Figures 1 and 2 are structural schematic diagrams of a clip applier shaft assembly according to an embodiment of the disclosure;

Fig. 3 is a schematic structural diagram of the clip applier shaft assembly shown in Fig. 1 in an initial state;

4 is a schematic diagram of the structure of the clip applier shaft assembly shown in FIG. 1 when the clip is completed;

Figure 5 is a schematic structural diagram of the clip applier shaft assembly shown in Figure 1 when firing is completed;

Fig. 6 is a schematic diagram of the position of the reset member in the clip applier shaft assembly of the embodiment of the disclosure;

FIG. 7 is a schematic structural diagram of a clip applier for medical surgery according to an embodiment of the disclosure.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the protection scope of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used herein shall be the ordinary meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "including" and other similar words mean that the elements or items before "including" or "including" now cover the elements or items listed after "including" or "including" and their equivalents, and do not exclude other Components or objects. The terms "upper", "lower", "left", "right", etc. are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

At present, the surgical clip feeding method and the surgical clip firing method of the clip applier are relatively complicated, and it is often necessary to separately operate the push clip device, the firing device, etc., which increases the operation steps and increases the operation risk to a certain extent.

1 to 5, the clip applier shaft assembly 100 provided by the embodiment of the present disclosure includes a tube body 10, a main shaft 1, a push clip assembly 2, a firing assembly 3, a reset part 4, and a clamping chamber assembly 5, and a tube body 10. It has a cavity, and the main shaft 1, the push clamp assembly 2, the firing assembly 3, the reset part 4, and the clamping bin assembly 5 are at least partially accommodated in the cavity of the tube body 10. For example, the spindle 1 is driven by the drive rod 200 of the drive device in the medical surgery clip applier. The driving mode of the driving device includes screw drive, ratchet drive, etc.; in the embodiment of the present disclosure, screw drive is taken as an example for description, for example, the drive rod 200 is a screw. The clip applier shaft assembly 100 has opposite head and ends; the direction shown by arrow A in FIG. 1 is the head end of the clip applier shaft assembly 100, and the opposite direction is the end. For example, the clamping chamber assembly 5 includes a plurality of surgical clips 50, a clamping chamber 51 for accommodating the plurality of surgical clips 50, and a clamp 300, the clamp 300 is disposed at the end of the clamping chamber 51 close to the head end , And in the axial direction from the end of the clip applier shaft assembly 100 to the head end, a plurality of surgical clips 50 are sequentially arranged in the clamping compartment 51; the push clip assembly 2 is configured to be moved toward the head by the main shaft 1 The end pushes to push the surgical clip 20 into the clamp 300; the firing assembly 3 is configured to be pushed toward the head end by the spindle 1 to fire the surgical clamp 50 placed in the clamp 300. For example, the restoring member 4 is configured such that when the spindle 1 moves to the head end, at least part of the restoring member 4 is deformed and generates a force to restore it to its original shape. For example, the reset member 4 includes a first reset member 41 located between the spindle 1 and the push-clamp assembly 2, a second reset member 42 located between the spindle 1 and the tube body 10, and between the firing assembly 3 and the tube body 10. The third reset piece 43.

For example, in the axial direction from the end of the clip applier shaft assembly 100 to the head end, the first reset member 41 is located between the main shaft 1 and the push clip assembly 2, and the second reset member 42 is located between the main shaft 1 and the tube body. 10, and the third reset member 43 is located between the firing assembly 3 and the tube body 10.

For example, the first resetting member 41 is located between the main shaft 1 and the push-clamp assembly 2 including a situation where the first resetting member 41 is located between at least a part of the main shaft 1 and at least a part of the push-clamp assembly 2; The second resetting member 42 is located between at least part of the main shaft 1 and the tube body 10; and the third resetting member 43 is located between the firing assembly 3 and the tube body 10, including the third resetting The member 43 is located between at least part of the firing assembly 3 and at least part of the tube body 10.

For example, the first resetting member 41 is located between the main shaft 1 and the push clamp assembly 2. In this case, the first resetting member 41 can be connected or held against at least part of the main shaft 1, and the first resetting member 41 can be connected or held against the pushing Clamp assembly; the second reset member 42 is located between the main shaft 1 and the tube body 10, in this case, the second reset member 42 can be connected or held against the main shaft 1, and the second reset member 42 can be connected or held against the tube body 10; In addition, the third resetting member 43 is located between the firing assembly 3 and the tube body 10. In this case, the third resetting member 43 can be connected to or abutting against the firing assembly 3, and the third resetting member 43 can be connected to or abutting the tube body 10.

For example, the cartridge assembly 5 is used to house a surgical clip 50, the head end of which needs to extend into the patient's body to provide an access port that allows the surgeon to use a trocar to insert many different surgical instruments therethrough. As described above, in the embodiment of the present disclosure, the clamping bin assembly 5 includes a clamping bin 51 for accommodating a surgical clip 50 and a clamp 300 disposed at the end of the clamping bin 51 close to the head end. .

For example, in an embodiment of the present disclosure, the tube body 10 is provided with a first limiting portion 101 and a second limiting portion 102 inside thereof, and the first limiting portion 101 is relative to the second limiting portion. 102 is arranged close to the end, a limited cavity 103 is formed between the first limiting portion 101 and the second limiting portion 102, and at least part of the firing assembly 3 can only move in the limiting cavity 103. For example, the first restoring member 41, the second restoring member 42, and the third restoring member 43 are all springs; it is true that they can also adopt other elastic structures, which are not limited in the embodiment of the present disclosure. For example, the restoring member 4 may be compressed or stretched to provide spring force.

For example, the second restoring member 42 and the third restoring member 43 may include the following arrangements. It should be noted that the following setting manners are merely exemplary implementation manners, and the embodiments of the present disclosure are not limited thereto.

Manner 1: In the initial state of the spindle 1 neither pushing the push clamp assembly 2 nor the firing assembly 3, the spindle 1 is arranged close to the end relative to the first limiting portion 101; the second restoring member 42 is arranged at the first position A limit part 101 and the main shaft 1 or between the second limit part 10 and the main shaft 1; when the main shaft 1 moves to the head end, the second reset member 42 is compressed.

For example, in the case of mode 1, the third resetting member 43 is arranged between the second limiting portion 102 and the firing assembly 3; when the firing assembly 3 moves to the head end, the third resetting member 43 is compressed.

For example, in the case of mode 1, the third reset member 43 is arranged between the first limiting portion 101 and the firing assembly 3 and is connected to the first limiting portion 101 and the firing assembly 3; When the head end moves, the third return piece 43 is stretched.

Manner 2: In the initial state where the spindle 1 neither pushes the push clamp assembly 2 nor pushes the firing assembly 3, the spindle 1 is arranged close to the head end relative to the first limiting portion 101; the second resetting member 42 is arranged at the first The limiting portion 101 and the main shaft 1 are connected to the first limiting portion 101 and the main shaft 1 respectively; when the main shaft 1 moves to the head end, the second restoring member 42 is stretched.

For example, in the case of the second mode, the third resetting member 43 is arranged between the second limiting portion 102 and the firing assembly 3; when the firing assembly 3 moves to the head end, the third resetting member 43 is compressed.

For example, in the case of the second method, the third reset member 43 is arranged between the first limiting portion 101 and the firing assembly 3 and connected to the first limiting portion 101 and the firing assembly 3; When the head end moves, the third return piece 43 is stretched.

Mode 3: The tube body 10 is provided with a second limiting portion 102 (that is, only one limiting portion is provided in the tube body 10); the main shaft 1 neither pushes the push clamp assembly 2 nor pushes In the initial state of the firing assembly 3, the main shaft 1 is disposed close to the end relative to the second limiting portion 102; the second resetting member 42 is disposed between the main shaft 1 and the second limiting portion 102, and the third resetting member 43 Set between the firing assembly 3 and the second limit part 102; when the spindle 1 moves to the head end, the second resetting piece 42 is compressed; when the firing assembly 3 moves to the head end, the third resetting piece 43 is compressed.

Mode 4: The tube body 10 is provided with a first limiting portion 101 (that is, only one limiting portion is provided in the tube body 10); the main shaft 1 neither pushes 1 nor pushes the clamp assembly 2 When the initial state of the firing assembly 3 is pushed, the main shaft 1 is disposed close to the end relative to the first limiting portion 101; the second resetting member 42 is disposed between the main shaft 1 and the first limiting portion 101, and the third resetting member 43 is disposed Between the firing assembly 3 and the first limiting part 101 and respectively connected with the firing assembly 3 and the first limiting part 101; when the main shaft 1 moves to the head end, the second reset member 42 is compressed; when the firing assembly When 3 moves to the head end, the third restoring member 43 is stretched.

Mode 5: The tube body 10 is provided with a first limiting part 101 (that is, only one limiting part is provided in the tube body 10); the main shaft 1 neither pushes the push clamp assembly 2 nor pushes the firing assembly In the initial state of 3, the main shaft 1 is arranged close to the head end relative to the first limit part 101; the second reset member 42 is arranged between the main shaft 1 and the first limit part 101 and is connected to the main shaft 1 and the first limit part 101 respectively. The position portion 101 is connected, and the third reset member 43 is arranged between the firing assembly 3 and the first limiting portion 101 and connected with the firing assembly 3 and the first limiting portion 101 respectively; when the spindle 1 moves to the head end, The second restoring member 42 is stretched; when the firing assembly 3 moves to the head end, the third restoring member 43 is stretched.

Figures 3 to 5 show an example of the first approach. Please refer to FIG. 3, in the initial state, the main shaft 1 is disposed closer to the end relative to the first limiting portion 101; the second resetting member 42 is disposed on the first limiting portion 101 and the main shaft 1. When the spindle 1 moves to the head end, the second reset member 42 is compressed. The third resetting member 43 is arranged between the second limiting portion 102 and the firing assembly 3; when the firing assembly 3 moves to the head end, the third resetting member 43 is compressed.

Fig. 6 shows an example of the fifth mode. Please refer to FIG. 6, the second restoring member 42 and the third restoring member 43 can also provide spring force by being stretched. For example: in the initial state, the spindle 1 is arranged close to the head end relative to the first limiting portion 101; the second resetting member 42 is arranged between the first limiting portion 101 and the spindle 1 and Are respectively connected with the first limiting portion 101 and the main shaft 1; when the main shaft 1 moves to the head end, the second restoring member 42 is stretched. The third reset member 43 is arranged between the first limiting portion 101 and the firing assembly 3 and connected to the first limiting portion 101 and the firing assembly; when the firing assembly 3 is When the head end moves, the third reset member 43 is stretched.

Of course, the restoring member 4 can also adopt a combination of compression and tension, and for details, refer to some examples in the above-mentioned mode 1 to mode 5.

For example, as shown in FIG. 3, in the initial state, the first reset member 41 and the second reset member 42 are in a pre-compressed state. For example, although the first reset member 41 is in a pre-compressed state, the elastic force of the spring is not sufficient to push the push clip assembly 2 to move, so as to ensure that when the drive rod 200 drives the spindle 1 to move to the head end, the elastic force of the first reset member 41 increases. Then push the push clip assembly 2 to move to the head end. By placing the first resetting member 41 and the second resetting member 42 in a pre-compressed state, the moving process of the driving rod 200 can be shortened, thereby reducing energy consumption and facilitating the miniaturization of products.

For example, referring to FIG. 4, in the clip applier shaft assembly 100, the push clip assembly 2 includes a push clip rod 21 and a clip feeding piece 22 arranged on the push clip rod 21, and the clip feeding piece 22 includes a set The clamping part 221 at its head end. In the initial state, the clip feeding part 221 is provided with the rear end of the first surgical clip 50 closest to the head end among the plurality of surgical clips 50; when clip feeding is performed, the driving rod 200 drives the spindle 1 to the center. The head end moves to push the clamping rod 21, and the clamping piece 22 moves to the head together with the clamping rod 21, so that the clamping part 221 sends the first surgical clip 50 to the clamp 300 . For example, when the clip is pushed, the clip-feeding part 221 is arranged at the front end of the second surgical clip 50 to block the subsequent surgical clip.

For example, the push clip assembly 2 further includes a sliding block 222. The clamping compartment 51 is provided with a sliding groove 511 for the sliding block 222 to slide, and in the axial direction from the end to the head end, the length of the sliding groove 511 is equal to one The length of the surgical clip 50; when the clip is sent, the slider 222 slides from the end of the chute 511 to the head end of the chute 511; after the clip is sent, the slider 222 abuts the head end of the chute 511 This is to prevent the push rod 21 from continuing to move to the head end. Since the slider 222 is held against the head end of the sliding groove 511, when the driving rod 200 continues to drive the spindle 1 to move to the head end, the clamping rod 21 and the clamping piece 22 are stationary.

Please refer to FIG. 5, after the pushing is completed, the driving rod 200 continues to drive the spindle 1 to move to the head end, and then push the firing assembly 3 to complete the firing. For example, the firing assembly 3 includes a firing shaft 31, and the main shaft 1 pushes the firing shaft 31 to move to the head end, so that the jaw 300 is closed to complete the firing. For example, the firing shaft 31 is a tubular member with an inner cavity, and the push clip assembly 2 is inserted at least in the inner cavity. For example, the firing assembly 3 further includes a firing blade 32 connected to the clamp 300. For example, the firing shaft 31 is provided with a firing block 312 and a side wing portion 311 at its head and end respectively, an X-shaped slot (not shown) is opened on the clamp 300, and the firing block 312 passes through a connecting pin (not shown) Insert into the X-shaped slot to connect with the clamp 300. When the main shaft 1 pushes the firing shaft 31 to move to the head end, since the firing piece 32 and the clamp 300 connected to it are fixed in the axial direction, the firing piece 32 and the jaw 300 move to the end relative to the firing shaft 31 At this time, the connecting pin on the firing block 312 moves in the X-shaped slot, so that the forceps 300 and the surgical clip 500 positioned or loaded therebetween are closed and/or shaped.

For example, the size of the X-shaped slot is determined as the overall length of the connecting pin required to move the clamp 300 from the fully open position to the fully closed position, so that the closing stroke length of the clamp 300 can be defined and controlled.

For example, the firing shaft 31 is provided with a side wing portion 311 at its end, and the third restoring member 43 connects or abuts the side wing portion 311. As described above, the third reset member 43 is located between the firing assembly 3 and the tube body 10; in this case, the third reset member 43 is located between the side wing portion 311 of the firing shaft 31 and the tube body 10, and is connected or held against The side wing portion 311 of the firing shaft 31 is fired.

For example, referring to FIG. 3, the tube body 10 is provided with a first limiting portion 101 and a second limiting portion 102 inside. The first limiting portion 101 is disposed near the end relative to the second limiting portion 102, and the first limiting portion 101 A limited cavity 103 is formed between the limiting portion 101 and the second limiting portion 102, and at least part of the firing assembly 3 can only move in the limiting cavity 103; the side wing portion 311 of the firing shaft 31 is arranged in the limiting cavity 103, The three restoring pieces 43 are arranged between the second limiting portion 102 and the side wing portion 311 of the firing shaft 31; when the firing assembly 3 moves to the head end, the third restoring piece 43 is compressed; and the main shaft 1 neither pushes the clamp When the component 2 does not push the firing component 3 in the initial state, the side wing portion 311 contacts the first limiting portion 101. The side wing portion 311 contacts the first limiting portion 101, so that the firing assembly 3 can be better positioned.

For example, in the initial state where the spindle 1 neither pushes the push clamp assembly 2 nor pushes the firing assembly 3, there is a preset distance between the spindle 1 and the firing shaft 31, and the length of the preset distance is greater than or equal to (preferably) The length of one surgical clip 50 ensures that when the surgical clip 50 is fed into the clamp 300, the main shaft 1 just touches the main shaft 1.

For example, the main shaft 1 includes: an accommodating tube 11 extending in the axial direction from the end to the head end, at least part of the first resetting member 41 is accommodated in the accommodating tube 11; side wings 12 are provided in the accommodating tube 11 At the end of the tube 11, the side wing portion 11 of the main shaft 1 abuts or is connected to the second reset member 42, and the side wing portion 11 of the main shaft 1 pushes the firing assembly to move to the head end.

3 to 5, in the initial state, the clamp 300 is in the open state, at this time the drive rod 200 drives the spindle 1 to move to the head end, since the first resetting member 41 and the second resetting member 42 are both in a pre-compressed state, When the driving rod 200 is driven to the head end, the main shaft 1 and the push clamp assembly 2 move to the head end for the first time. As the push clamp assembly 2 advances toward the head end, the push clamp rod 21 will be close to the first surgical clamp at the head end. 50 is fed into the forceps 300. At this time, the clip feeding portion 221 on the clip feeding piece 22 is held against the front end of the second surgical clip 50 to prevent the second surgical clip 50 from moving into the forceps 300 and sliding The block 222 is held against the head end of the sliding groove 511. The clamping process is completed, and the main shaft 1 just touches the firing shaft 31. When the driving rod 200 is continued to be driven, the main shaft 1 pushes the firing shaft 31 toward the head end. Since the slider 222 is held against the head end of the chute 511, The clamp assembly 2 stops moving. As the firing shaft 31 advances, the jaw 300 completes firing (closing).

When the firing is completed, the driving rod 200 moves in the reverse direction to the initial position. Under the action of the first resetting member 41, the second resetting member 42, and the third resetting member 43, the main shaft 1, the push clamp assembly 2 and the firing assembly 3 return to In the initial position, the clip-feeding piece 22 abuts the rear end of the first surgical clip 50 at this time. Continue to repeat the previous steps until the surgical clamp 50 is completely fired, and finally the tip of the push clamp rod 21 is exposed from the clamp 300, prompting the user to replace the instrument.

Referring to FIG. 7, an embodiment of the present disclosure also provides a clip applier for medical surgery, which includes an adaptor and the clip applier shaft assembly as described above. The adaptor provides power to drive the main shaft 1 so that the main shaft 1 pushes the push clip assembly 2 and the firing assembly 3 move towards the head end. For example, the adapter includes the driving device as described above, and the driving device includes the driving rod 200.

For example, the adapter includes a handle assembly 400 and a working head 500 detachably connected to the handle assembly 400, and the clip applier shaft assembly 100 and the working head 500 are detachably connected.

For example, only one operation button is provided on the adapter, and by controlling the operation button, the functions of pushing, clamping, firing, and device reset can be completed by the movement of the spindle. Obviously, the design complexity of the product is simplified.

For example, the beneficial effects of the embodiments of the present disclosure are at least that: the clip applier shaft assembly and the medical surgery clip applier of the embodiments of the present disclosure are provided with a resetting member in the tube, and when the driving device of the medical surgery clip applier drives the spindle to the head end When moving, the second resetting piece deforms, and the first resetting piece pushes the push-clamp assembly to move toward the head end, and then the spindle contacts the firing assembly and pushes it to move to the head end, and the third resetting piece deforms; therefore, in the end all After the firing of the surgical clip is completed, the resetting force generated by the resetting piece resets the main shaft, the push clip assembly and the firing assembly. The clip applier shaft assembly and the medical surgical clip applier can complete the functions of pushing the clip, sending the clip, firing and device resetting only by controlling the main shaft, which simplifies the operation process and reduces the operation risk.

The above-mentioned technical features can be combined arbitrarily. In order to make the description concise, all possible combinations of the above-mentioned technical features are not described. However, as long as there is no contradiction in the combination of these technical features, they should be regarded as the present disclosure. protected range.

The above are only exemplary implementations of the present disclosure, and are not used to limit the protection scope of the present disclosure, which is determined by the appended claims.

Claims

A clip applier shaft assembly has opposite head and ends, and includes:

A tube body with a cavity; and

At least partly housed in the tube:

The main shaft is set close to the end;

The clamping bin assembly includes a plurality of surgical clips, a clamping bin for accommodating the plurality of surgical clips, and a clamp, the clamps being arranged at an end of the clamping bin close to the head end, and In the axial direction from the end to the head end, the plurality of surgical clips are sequentially arranged in the clamping compartment;

Push clip assembly, the push clip assembly is pushed toward the head end by the spindle to push the surgical clip into the forceps; and

A firing assembly, the firing assembly is pushed toward the head end by the spindle to fire the surgical clip placed in the clamp, wherein,

The clip applier shaft assembly further includes a resetting member, and when the main shaft moves to the head end, at least part of the resetting member is deformed and generates a force to restore it to its original shape;

The reset member includes a first reset member located between the main shaft and the push clamp assembly, a second reset member located between the main shaft and the tube body, and a second reset member located between the firing assembly and the tube. The third reset piece between the bodies.
The clip applier shaft assembly according to claim 1, wherein the tube body is provided with a first limiting portion and a second limiting portion in its interior, and the first limiting portion is relative to the second limiting portion. The position part is arranged close to the end, a limited position cavity is formed between the first limit part and the second limit part, and at least part of the firing assembly can only move in the limit cavity.
The clip applier shaft assembly according to claim 2, wherein, when the spindle neither pushes the push clip assembly nor pushes the firing assembly in the initial state, the spindle is relative to the first limit Part is arranged close to the end; the second reset part is arranged between the first limiting part and the main shaft or between the second limiting part and the main shaft; when the main shaft When moving to the head end, the second resetting member is compressed.
The clip applier shaft assembly according to claim 2, wherein, when the spindle neither pushes the push clip assembly nor pushes the firing assembly in the initial state, the spindle is relative to the first limit Part is arranged close to the head end; the second reset part is arranged between the first limiting part and the main shaft and connected with the first limiting part and the main shaft respectively; when the main shaft When moving to the head end, the second restoring member is stretched.
The clip applier shaft assembly according to claim 3 or 4, wherein the third reset member is disposed between the second limiting portion and the firing assembly; when the firing assembly moves to the head end , The third reset member is compressed.
The clip applier shaft assembly according to claim 3 or 4, wherein the third reset member is disposed between the first limiting portion and the firing assembly and is connected to the first limiting portion and the firing assembly, respectively. The firing assembly is connected; when the firing assembly moves to the head end, the third resetting member is stretched.
The clip applier shaft assembly according to claim 1, wherein the tube body is provided with a second limiting part in its interior; the main shaft neither pushes the push clip assembly nor pushes the firing assembly In the initial state, the main shaft is disposed close to the end relative to the second limiting part; the second resetting part is disposed between the main shaft and the second limiting part, and the third resetting part Is arranged between the firing assembly and the second limiting part; when the main shaft moves to the head end, the second resetting member is compressed; when the firing assembly moves to the head end At this time, the third reset member is compressed.
The clip applier shaft assembly according to claim 1, wherein the tube body is provided with a first limiting part in its interior; the main shaft neither pushes the push clip assembly nor pushes the firing assembly In the initial state, the main shaft is disposed close to the end relative to the first limiting part; the second resetting part is disposed between the main shaft and the first limiting part, and the third resetting part Is arranged between the firing assembly and the first limiting part and connected with the firing assembly and the first limiting part respectively; when the main shaft moves to the head end, the second The reset member is compressed; when the firing assembly moves to the head end, the third reset member is stretched.
The clip applier shaft assembly according to claim 1, wherein the tube body is provided with a first limiting part in its interior; the main shaft neither pushes the push clip assembly nor pushes the firing assembly In the initial state, the main shaft is disposed close to the head end relative to the first limiting portion; the second resetting member is disposed between the main shaft and the first limiting portion and is respectively connected to the main shaft Connected to the first limiting part, and the third reset member is arranged between the firing assembly and the first limiting part and connected to the firing assembly and the first limiting part respectively; when When the main shaft moves to the head end, the second resetting member is stretched; when the firing assembly moves to the head end, the third resetting member is stretched.
The clip applier shaft assembly according to any one of claims 1-9, wherein the push clip assembly comprises a push clip rod and a clip feeding piece arranged on the push clip rod, and the clip feeding piece comprises a setting The clamping part at its head end;

When the spindle neither pushes the push clip assembly nor pushes the firing assembly in the initial state, the clip feeding part is located behind the first surgical clip closest to the head end among the plurality of surgical clips End; and

When the clamping is carried out, the main shaft moves to the head end to push the clamping rod, and the clamping piece moves to the head end along with the clamping rod, so that the clamping The part sends the first surgical clip to the forceps.
The clip applier shaft assembly of claim 10, wherein:

The push clip assembly further includes a sliding block, and a sliding groove for the sliding of the sliding block is provided on the clamping bin, and in the axial direction from the end to the head end, the length of the sliding groove is equal to one The length of the surgical clip;

When the clip is being sent, the slider slides from the end of the chute to the head end of the chute;

After the clamping is completed, the sliding block is held against the head end of the sliding groove to prevent the clamping rod from continuing to move to the head end.
The clip applier shaft assembly according to any one of claims 1-11, wherein the firing assembly comprises a firing shaft, and the main shaft pushes the firing shaft to move the head end to close the jaws Complete the firing.
The clip applier shaft assembly according to claim 12, wherein the firing shaft is provided with a side wing portion at its end, and the third resetting member connects or abuts the side wing portion.
The clip applier shaft assembly of claim 13, wherein:

The tube body is provided with a first limiting portion and a second limiting portion in the interior thereof, the first limiting portion is disposed close to the end relative to the second limiting portion, and the first limiting portion A limited cavity is formed between the second limiting portion and at least a part of the firing assembly can only move in the limiting cavity;

The side wing portion of the firing shaft is arranged in the limiting cavity, and the third reset member is arranged between the second limiting portion and the side wing portion of the firing assembly; When moving, the third reset member is compressed; and

When the main shaft neither pushes the push clip assembly nor pushes the firing assembly in the initial state, the side wing portion contacts the first limiting portion.
The clip applier shaft assembly according to claim 12, wherein when the main shaft neither pushes the push clip assembly nor pushes the initial state of the firing assembly, there is provided between the main shaft and the firing shaft There is a preset distance, and the length of the preset distance is greater than or equal to the length of one surgical clip.
The clip applier shaft assembly of any one of claims 1-15, wherein the main shaft comprises:

An accommodating tube extending along the axial direction from the end to the head end, and at least part of the first reset member is accommodated in the accommodating tube;

The side wing portion is provided at the end of the containing tube, the side wing portion of the main shaft resists or is connected to the second resetting member, and the side wing portion of the main shaft pushes the firing assembly toward the head end mobile.
A clip applier for medical surgery, comprising an adapter and the clip applier shaft assembly according to any one of claims 1 to 16, wherein the adapter provides power to drive the spindle, so that the spindle pushes the spindle The push clip assembly and the firing assembly move toward the head end.
The medical surgical clip applier according to claim 17, wherein the adapter comprises a handle assembly and a working head detachably connected to the handle assembly, and the clip applier shaft assembly is detachably connected to the working head .