CN112704539B - Clip applier shaft assembly and medical surgical clip applier - Google Patents

Clip applier shaft assembly and medical surgical clip applier Download PDF

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Publication number
CN112704539B
CN112704539B CN201911021573.1A CN201911021573A CN112704539B CN 112704539 B CN112704539 B CN 112704539B CN 201911021573 A CN201911021573 A CN 201911021573A CN 112704539 B CN112704539 B CN 112704539B
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assembly
clip
firing
head end
main shaft
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CN112704539A (en
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张翚
徐荣华
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Suzhou IntoCare Medical Technology Co Ltd
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Suzhou IntoCare Medical Technology Co Ltd
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Priority to PCT/CN2020/121836 priority patent/WO2021078091A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/128Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
    • A61B17/1285Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips for minimally invasive surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/128Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Reproductive Health (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to a clip applier shaft assembly and a medical operation clip applier, wherein a reset piece is arranged in a tube body, when a driving device of the medical operation clip applier drives a main shaft to move towards the head end, a second reset piece deforms, the first reset piece is used as a connecting piece to further push a pushing and clamping assembly to move, then the main shaft is in contact with a firing assembly and pushes the firing assembly to move towards the head end, and a third reset piece deforms; therefore, after the surgical clamp is finally fired and the driving is stopped, the main shaft, the clamp pushing assembly and the firing assembly are reset by the reset force generated by the reset piece. Therefore, the clamp applier shaft assembly and the medical surgical clamp applier simplify the operation process and reduce surgical risks only by arranging the driving main shaft to move and finish the functions of pushing and clamping, delivering and triggering and resetting the device.

Description

Clip applier shaft assembly and medical surgical clip applier
Technical Field
The invention relates to a clamp applier shaft assembly and a medical operation clamp applier, and belongs to the field of medical equipment.
Background
Endoscopic surgical staplers and surgical clip appliers are known in the art and are used for many different and useful surgical procedures. In the case of laparoscopic surgery, access to the interior of the abdomen is achieved through a narrow tube or cannula inserted through a small entry incision in the skin. Minimally invasive procedures performed elsewhere in the body are often referred to as endoscopic procedures. The tube or cannula device is typically extended into the patient through an access incision to provide an access port. The port allows a surgeon to use a trocar to insert a number of different surgical instruments therethrough and to perform surgical procedures away from the incision.
However, the clip cabin feeding mode and the surgical clip firing mode of the existing clip applier are complex, and the clip pushing device, the firing device and the like are required to be respectively operated, so that the operation steps are increased, and the surgical risk is increased to a certain extent.
In view of the foregoing, there is a need for a medical surgical clip applier with easy feeding of the shaft assembly.
Disclosure of Invention
The invention aims to provide a clip applier shaft assembly and a medical operation clip applier, wherein a reset piece is arranged in a tube body to play a role in connection and reset, so that the device only has the functions of driving a main shaft to move, pushing and clamping, delivering and triggering and resetting the device.
In order to achieve the purpose, the invention provides the following technical scheme: a clip applier shaft assembly for connecting a clip applier working head, said clip applier shaft assembly having opposed head and tip ends, said clip applier shaft assembly comprising:
at least part holding in the body, and set gradually from end to head end:
the main shaft is connected with the working head of the clip applier and is driven by a driving device in the working head of the clip applier;
the pushing and clamping assembly is pushed towards the head end direction by the main shaft so as to push the surgical clip accommodated in the clip bin into the forceps clip;
the firing assembly is pushed by the main shaft towards the head end direction so as to be used for firing the surgical clip arranged in the forceps holder;
and (c) a second step of,
the clamping bin assembly comprises a clamping bin for accommodating a surgical clamp and a clamp arranged in the direction of the head end of the clamping bin;
the clip applier shaft assembly further comprises a resetting piece, and when the main shaft moves towards the head end direction, at least part of the resetting piece deforms and generates a force for restoring the resetting piece; reset the piece including connecting main shaft and the first piece that resets of push-type clamp subassembly, connecting the second of main shaft and body resets, and connect the third of percussion subassembly and body resets.
Furthermore, the tube body is internally provided with a first limiting part and a second limiting part, the first limiting part is arranged in the direction close to the tail end relative to the second limiting part, a limiting cavity is formed between the first limiting part and the second limiting part, and at least part of the firing assembly can only move in the limiting cavity.
Further, in an initial state, the main shaft is arranged close to the tail end direction relative to the first limiting part; the second reset piece is arranged on the first limiting part or the second limiting part and connected with the main shaft; when the main shaft moves towards the head end direction, the second resetting piece is compressed.
Further, in the initial state, the main shaft is arranged in the direction close to the head end relative to the first limiting part; the second reset piece is arranged on the first limiting part and connected with the main shaft; when the main shaft moves towards the head end direction, the second resetting piece is stretched.
Further, the third resetting piece is arranged on the second limiting part and connected with the firing assembly; when the firing assembly moves towards the head end direction, the third resetting piece is compressed;
or the third resetting piece is arranged on the first limiting part and is connected with the firing assembly; when the firing assembly moves towards the head end direction, the third resetting piece is stretched.
Furthermore, the pushing and clamping assembly comprises a pushing and clamping rod, and the pushing and clamping rod is used for pushing the first surgical clamp close to the head end in the clamping bin to move towards the head end.
Furthermore, the pushing and clamping assembly also comprises a clamping delivering piece arranged on the pushing and clamping rod, the clamping delivering piece comprises a clamping delivering part arranged at the head end, and in an initial state, the clamping delivering part is arranged at the rear end of the first surgical clamp close to the head end; in the process of pushing and clamping, the main shaft moves towards the direction of the head end to push the pushing and clamping rod to send the first surgical clamp into the clamp holder, and the clamping sending part of the clamping sending piece is propped against the head end of the clamping cabin to block the subsequent surgical clamps.
Further, the firing assembly comprises a firing shaft and a firing plate connected with the jaws, and the main shaft pushes the firing shaft to move towards the head end relative to the firing plate so as to close the jaws and complete firing.
Further, the firing shaft is provided with a wing part at the tail end, the wing part is arranged in the limiting cavity, and the third resetting piece is connected with the wing part.
Further, in an initial state, a preset distance is arranged between the main shaft and the firing shaft, and the length of the preset distance is greater than or equal to that of one surgical clip.
The invention also provides a medical operation clip applier which comprises a handle assembly, a working head capable of selecting the handle assembly and a clip applier shaft assembly, wherein the clip applier shaft assembly is connected with the working head.
Compared with the prior art, the invention has the beneficial effects that: according to the clip applier shaft assembly and the medical operation clip applier, the reset piece is arranged in the pipe body, when the driving device of the medical operation clip applier drives the main shaft to move towards the head end, the second reset piece deforms, the first reset piece serves as a connecting piece to further push the push-clip assembly to move, then the main shaft is in contact with the firing assembly and pushes the firing assembly to move towards the head end, and the third reset piece deforms; therefore, after the surgical clamp is finally fired and the driving is stopped, the main shaft, the clamp pushing assembly and the firing assembly are reset by the reset force generated by the reset piece. Therefore, the clamp applier shaft assembly and the medical surgical clamp applier simplify the operation process and reduce surgical risks only by arranging the driving main shaft to move and finish the functions of pushing and clamping, delivering and triggering and resetting the device.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIGS. 1 and 2 are schematic structural views of a clip applier shaft assembly according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the clip applier shaft assembly shown in FIG. 1 in an initial state;
FIG. 4 is a schematic structural view of the clip applier shaft assembly shown in FIG. 1 at the completion of clip delivery;
FIG. 5 is a schematic structural view of the clip applier shaft assembly shown in FIG. 1 at the completion of firing;
FIG. 6 is a schematic illustration of the position of a reset member in a clip applier shaft assembly, in accordance with a non-illustrated embodiment of the present invention;
fig. 7 is a schematic structural view of a medical surgical clip applier, according to another embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
It should be noted that: the terms "upper", "lower", "left", "right", "inner" and "outer" of the present invention are used for describing the present invention with reference to the drawings, and are not intended to be limiting terms.
Referring to fig. 1 to 5, a clip applier shaft assembly 100 according to an embodiment of the present invention includes a tube 10, and the tube 10 has a cavity structure, and a main shaft 1, a clip pushing assembly 2, a firing assembly 3, a reset member 4, and a clip cartridge assembly 5 are accommodated therein. Wherein the main shaft 1 is driven by a driving rod 200 of a driving device in a medical surgical clip applier, and those skilled in the art should know that the driving device commonly used in the clip applier has a screw drive, a ratchet drive, etc., and in the present embodiment, the screw drive is adopted. The direction indicated by arrow A in FIG. 1 is the head end of clip applier shaft assembly 100, and the opposite direction is the distal end. In this clip applier shaft assembly 100, main shaft 1, push away clamp subassembly 2, firing subassembly 3 and press from both sides storehouse subassembly 5 and set gradually from terminal to the head end, reset 4 including connecting main shaft 1 and push away the first piece 41 that resets of clamp subassembly 2, connect the second piece 42 that resets of main shaft 1 and body 10, and connect the third piece 43 that resets of firing subassembly 3 and body 10.
As will be appreciated by those skilled in the art, the clip cartridge assembly 5 is intended to receive a surgical clip, the head end of which extends into a patient to provide an access port that allows a surgeon to use a trocar to insert a number of different surgical instruments therethrough. In the device of the present invention, the cartridge assembly 5 specifically includes a clamping cartridge 51 for accommodating a surgical clip and a jaw 300 disposed at a head end of the clamping cartridge 51.
In the present device, the tube 10 is provided with a first position-limiting portion 101 and a second position-limiting portion 102 inside thereof, the first position-limiting portion 101 is disposed in a direction close to the end of the second position-limiting portion 102, a position-limiting cavity 103 is formed between the first position-limiting portion 101 and the second position-limiting portion 102, and at least a part of the firing assembly 3 can only move in the position-limiting cavity 103. In this embodiment, the first restoring member 41, the second restoring member 42 and the third restoring member 43 are all springs, and indeed, in other embodiments, other elastic structures may also be adopted. The reset element 4 can be compressed or extended to provide a spring force, in this embodiment, referring to fig. 3, in an initial state, the spindle 1 is disposed close to the end direction relative to the first position-limiting part 101; the second reset piece 42 is disposed on the first position-limiting portion 101 (and may also be disposed on the second position-limiting portion 102, and is preferably disposed on the first position-limiting portion 101 from the viewpoint of saving cost and simplifying the spatial structure of the device), and is connected to the spindle 1. When the spindle 1 moves in the head end direction, the second restoring member 42 is compressed. The third resetting piece 43 is arranged on the second limiting part 102 and is connected with the firing assembly 3; when the firing assembly 3 moves in the direction of the head end, the third restoring member 43 is compressed.
Indeed, in other embodiments of the present invention, referring to fig. 6, the second restoring member 1-1 and the third restoring member 1-2 may also provide spring force by being stretched. For example: in an initial state, the main shaft 1-3 is arranged in a direction close to the head end relative to the first limiting part 1-4; the second reset piece 1-1 is arranged on the first limiting part 1-4 and is connected with the main shaft 1-3; when the main shaft 1-3 moves towards the head end direction, the second resetting piece 1-1 is stretched. The third resetting piece 1-2 is arranged on the first limiting part 1-4 and is connected with the firing assembly 1-5; when the firing assembly 1-5 moves towards the head end, the third resetting piece 1-1 is stretched.
In other embodiments, the restoring member 4 may also be combined in compression and tension.
As shown in fig. 3, in the initial state, the first restoring member 41, the second restoring member 42 and the third restoring member 43 are preferably in a pre-compressed state. Although the first restoring member 41 is in the pre-compression state, the elastic force of the spring is not enough to push the pushing and clamping assembly 2 to move, so that when the main shaft 1 is driven by the screw 200 to move towards the head end, the elastic force of the first restoring member 41 is increased, and the pushing and clamping assembly 2 is further pushed to move towards the head end at the first time (the second restoring member 42 and the third restoring member 43 are the same). Specifically, referring to fig. 4, in the clip applier shaft assembly 100, the clip pushing assembly 2 includes a clip pushing rod 21 and a clip delivering piece 22 disposed on the clip pushing rod 21, and the clip pushing rod 21 is used for pushing the first surgical clip 50 near the head end in the clip loading bin 51 to move towards the head end. The clip transporting piece 22 comprises a clip transporting part 221 arranged at the head end, and in an initial state, the clip transporting part 221 is provided with the rear end of the first surgical clip 50; when the surgical clip is delivered, the screw rod 200 drives the main shaft 1 to move towards the head end direction, so as to push the clip pushing rod 21 to deliver the first surgical clip 50 to the forceps holder 300, at this time, the clip delivering piece 22 moves towards the head end direction along with the clip pushing rod 21, and when the clip is completely delivered, the clip delivering part 221 abuts against and is arranged at the head end of the clip containing bin 51, so as to block the subsequent surgical clip. Moreover, since the head end of the clip transporting piece 22 is abutted against the clamping bin 51, when the screw 200 continues to drive the main shaft 1 to move towards the head end direction, the clamping pushing rod 21 and the clip transporting piece 22 are still.
Referring to fig. 5, after the pushing and clamping is completed, the screw rod 200 continues to drive the main shaft 1 to move toward the head end, so as to push the triggering assembly 3 to complete triggering. Specifically, the firing assembly 3 includes a firing shaft 31 and a firing plate 32 coupled to the jaws 300. The firing shaft 31 is provided with a firing block 312 and a wing 311 at the head end and the tail end, respectively, the jaw 300 is provided with an X-shaped slot (not shown), and the firing block 312 is inserted into the X-shaped slot through a connecting pin (not shown) to be connected with the jaw 300. The wing part 311 is limited in the limit cavity 103, the third reset piece 43 is connected to the wing part 311, and during the firing process, when the main shaft 1 abuts against the wing part 311 to push the firing shaft 31 to move towards the head end, the third reset piece 43 is compressed at the moment. Preferably, in the initial state, a preset distance is provided between the main shaft 1 and the wing portion 311, and the length of the preset distance is slightly greater than (theoretically equal to) the length of one surgical clip, so as to ensure that the main shaft 1 just touches the wing portion 311 when the surgical clip is fed into the forceps holder 300. When the main shaft 1 pushes the firing shaft 31 to move in the head-end direction, since the striking plate 32 and the jaw 300 connected thereto are fixed in the axial direction, the striking plate 32 and the jaw 300 move in the distal direction with respect to the firing shaft 31, at which time the connecting pin on the firing block 312 moves in the X-shaped slot to close and/or shape the jaw 300 and the surgical clip positioned or loaded therebetween.
Preferably, the X-shaped slot is sized to couple the entire length of pin movement required to move the jaw 300 from the fully open position to the fully closed position, such that the closing stroke length of the jaw 300 may be defined and controlled.
Referring now to fig. 3-5, the clip feed and firing including the clip applier shaft assembly 100 operably connected to a clip applier working head and handle assembly is shown and described. At the initial state, the forceps 300 is in an open state, at this time, the driving rod 200 drives the main shaft 1 to move towards the head end direction, because the first resetting piece 41 and the second resetting piece 42 are both in a pre-compression state, when the driving rod 200 drives towards the head end, the main shaft 1 and the pushing and clamping assembly 2 move towards the head end direction at the first time, as the pushing and clamping assembly 2 advances towards the head end, the pushing and clamping rod 21 sends the first surgical clip 50 close to the head end into the forceps 300, at this time, the clamping part 221 on the clamping piece 22 abuts against the head end of the clamping bin 51, and the second surgical clip is prevented from moving into the forceps 300. At this time, the clip feeding process is completed, the main shaft 1 contacts with the flank portion 311 of the firing shaft 31, and when the driving rod 200 is driven continuously, the main shaft 1 pushes the firing shaft 31 to advance toward the head end direction, and the clip feeding assembly 2 stops moving due to the fact that the clip feeding portion 211 abuts against the clamping bin 51. With the advancement of the firing shaft 31, the jaws 300 complete firing (closing) under the action of the firing block 312.
When the firing is completed, the driving rod 200 moves reversely to the initial position, and the main shaft 1, the clip pushing device 2 and the firing shaft 31 return to the initial position under the action of the first resetting member 41, the second resetting member 42 and the third resetting member 43, wherein the clip transporting plate 22 returns to the back of the first surgical clip at this time. And repeating the previous steps continuously until the surgical clips are completely fired, and finally exposing the head ends of the clip pushing rods 21 to prompt the user to replace the instruments.
Referring to fig. 7, another embodiment of the present invention further provides a medical surgical clip applier, which includes a handle assembly 400, a working head 500 selectively connected to the handle assembly 400, and a clip applier shaft assembly 100 connected to the working head 500 (see the previous embodiment, fig. 1 to 6). It will be appreciated by those skilled in the art that clip appliers may be manipulated by providing an actuator assembly other than handle assembly 400, and that handle assembly 400 or the actuator assembly are prior art and will not be described in detail herein. The working head 500 is mainly provided with a driving device, and those skilled in the art should understand that the existing clip applier generally adopts a screw driving or a ratchet driving, which are all the prior art and are not described herein.
Compared with the prior art, the invention has the beneficial effects that: according to the clip applier shaft assembly and the medical operation clip applier, the reset piece is arranged in the pipe body, when the driving device of the medical operation clip applier drives the main shaft to move towards the head end, the second reset piece deforms, the first reset piece serves as a connecting piece to further push the push-clip assembly to move, then the main shaft is in contact with the firing assembly and pushes the firing assembly to move towards the head end, and the third reset piece deforms; therefore, after the surgical clamp is finally fired and the driving is stopped, the main shaft, the clamp pushing assembly and the firing assembly are reset by the reset force generated by the reset piece. Therefore, the clamp applier shaft assembly and the medical surgical clamp applier simplify the operation process and reduce surgical risks only by arranging the driving main shaft to move and finish the functions of pushing and clamping, delivering and triggering and resetting the device.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (7)

1. A clip applier shaft assembly for connection to a clip applier working head, said clip applier shaft assembly having opposed head and tail ends, said clip applier shaft assembly comprising:
a tube having a cavity; the pipe body is internally provided with a first limiting part and a second limiting part, the first limiting part is arranged relative to the second limiting part in the direction close to the tail end, and a limiting cavity is formed between the first limiting part and the second limiting part;
at least part of the tube body is accommodated in the tube body, and the tube body is sequentially arranged from the tail end to the head end:
the main shaft is connected with the working head of the clip applier and is driven by a driving device in the working head of the clip applier;
the pushing and clamping assembly is pushed towards the head end direction by the main shaft so as to push the surgical clamp into the forceps holder;
the firing assembly is pushed by the main shaft towards the head end direction so as to be used for firing the surgical clip arranged in the forceps holder; the firing assembly comprises a firing shaft and a firing sheet connected with the jaws, and the main shaft pushes the firing shaft to move towards the head end relative to the firing sheet so as to close the jaws and complete firing; the firing shaft is provided with a side wing part at the tail end, the side wing part is arranged in the limit cavity, and at least part of the firing assembly can only move in the limit cavity; an X-shaped slot is formed in the forceps holder, and the firing block is inserted into the X-shaped slot through a connecting pin and connected with the forceps holder;
and the number of the first and second groups,
the clamping bin assembly comprises a clamping bin for accommodating a surgical clamp and a clamp arranged in the direction of the head end of the clamping bin;
the clip applier shaft assembly further comprises a reset piece, and when the main shaft moves towards the head end direction, at least part of the reset piece deforms and generates a force for restoring the reset piece; the reset piece comprises a first reset piece connected with the main shaft and the push clamp assembly, a second reset piece connected with the main shaft and the tube body, and a third reset piece connected with the firing assembly and the tube body, and the third reset piece is connected with the side wing part;
in an initial state, a preset distance is arranged between the main shaft and the firing shaft, and the length of the preset distance is greater than or equal to that of one surgical clip.
2. The clip applier shaft assembly of claim 1, wherein in an initial state, said main shaft is disposed proximally with respect to said first limit portion; the second reset piece is arranged on the first limiting part or the second limiting part and is connected with the main shaft; when the main shaft moves towards the head end direction, the second resetting piece is compressed.
3. The clip applier shaft assembly of claim 1, wherein in an initial state, said main shaft is disposed in a direction proximal to said head end relative to said first limit stop; the second reset piece is arranged on the first limiting part and connected with the main shaft; when the main shaft moves towards the head end direction, the second resetting piece is stretched.
4. The clip applier shaft assembly of claim 2 or 3, wherein said third reducing element is disposed on said second limit stop and is connected to said firing assembly; when the firing assembly moves towards the head end direction, the third resetting piece is compressed;
or the third resetting piece is arranged on the first limiting part and is connected with the firing assembly; when the firing assembly moves towards the head end direction, the third resetting piece is stretched.
5. The clip applier shaft assembly of claim 4, wherein said pusher-clip assembly includes a pusher-clip lever for pushing a first surgical clip within said cartridge proximate said head end toward said head end.
6. The clip applier shaft assembly of claim 5, wherein said pusher-clip assembly further comprises a clip transport disposed on said pusher-clip bar, said clip transport comprising a clip transport disposed at a head end, said clip transport disposed at a rear end of a first surgical clip proximate said head end in an initial state; in the process of pushing the clamps, the main shaft moves towards the direction of the head end to push the pushing and clamping rod to send the first surgical clamp into the clamp, and the clamp sending part of the clamp sending piece is abutted against the head end of the clamp containing bin to block the subsequent surgical clamps.
7. A medical surgical clip applier comprising a handle assembly, a working head selective to said handle assembly, and a clip applier shaft assembly according to any one of claims 1 to 6 connected to said working head.
CN201911021573.1A 2019-10-25 2019-10-25 Clip applier shaft assembly and medical surgical clip applier Active CN112704539B (en)

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CN201911021573.1A CN112704539B (en) 2019-10-25 2019-10-25 Clip applier shaft assembly and medical surgical clip applier
PCT/CN2020/121836 WO2021078091A1 (en) 2019-10-25 2020-10-19 Clip applier shaft assembly and medical surgical clip applier

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