CN112704538B - Clip applier shaft assembly and medical surgical clip applier - Google Patents
Clip applier shaft assembly and medical surgical clip applier Download PDFInfo
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- CN112704538B CN112704538B CN201911021555.3A CN201911021555A CN112704538B CN 112704538 B CN112704538 B CN 112704538B CN 201911021555 A CN201911021555 A CN 201911021555A CN 112704538 B CN112704538 B CN 112704538B
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- assembly
- shaft
- clip applier
- firing
- head end
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/128—Surgical 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
- A61B17/1285—Surgical 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
- A61B17/1222—Packages or dispensers therefor
Abstract
The invention relates to a clip applier shaft assembly and a medical operation clip applier, wherein an inner sleeve and an outer sleeve are arranged in a tube body, and a second driving shaft is used for pushing the inner sleeve to move relative to the outer sleeve, so that a gun body of the clip applier can stretch and retract; and, through setting up the first piece that resets of connecting tube body and interior sleeve pipe, can reset the body of a gun. Therefore, the clip applier shaft assembly and the gun body of the medical surgical clip applier can stretch out and draw back, the requirement of the medical surgical clip applier for length diversification in the surgical process is met, surgical risks are reduced, and instrument cost is reduced.
Description
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 in 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 magazine 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 operated respectively, so that the operation steps are increased, and the surgical risk is increased to a certain extent. Moreover, the existing clip applier has a fixed gun body length, and when the length of the existing clip applier needs to be additionally increased in the hand-on process, the clip applier is often pulled out of a patient body, and a longer clip applier is selected again.
In view of the above, it is desirable to provide a medical surgical clip applier in which the shaft assembly is easily fed and the gun body can be extended and retracted.
Disclosure of Invention
The invention aims to provide a clip applier shaft assembly and a medical operation clip applier, wherein the gun body is stretched through an inner sleeve and an outer sleeve, so that the clip applier can meet the requirement of any length; meanwhile, the effects of pushing and clamping, feeding and triggering, resetting the device and the like can be completed only by driving the main shaft to move, and the operation is simple and convenient.
In order to achieve the purpose, the invention provides the following technical scheme: a clip applier shaft assembly is used for being connected with a clip applier working head, a driving device is arranged in the clip applier working head, the clip applier shaft assembly is provided with a head end and a tail end which are opposite, a jaw is arranged at the head end of the clip applier shaft assembly, and the tail end of the clip applier shaft assembly is connected with the clip applier working head; the drive device includes first and second drive shafts driven thereby, the clip applier shaft assembly comprising:
a tube having a cavity;
an outer sleeve and an inner sleeve at least partially received within the tube, the outer sleeve being fixed to the tube, the inner sleeve being selectively coupled to the second drive shaft, the drive mechanism moving the inner sleeve relative to the outer sleeve by driving the second drive shaft;
a main shaft selectively connected to the first driving shaft, the driving device moving the main shaft by driving the first driving shaft;
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 towards the head end direction by the main shaft and is used for firing the surgical clip arranged in the forceps jaws.
Further, clip applier shaft subassembly still includes the first piece that resets that sets up in the body, first reset the piece and connect interior sleeve pipe and body, when the second drive shaft promotes interior sleeve pipe removes, first piece that resets takes place deformation and produces the power that makes its reconversion.
Furthermore, the clip applier shaft assembly further comprises a second reset piece and a third reset piece which are arranged in the tube body, the second reset piece is connected with the main shaft and the clip pushing assembly, and the third reset piece is connected with the firing assembly and the tube body; when the main shaft moves towards the head end direction, the second resetting piece and/or the third resetting piece deform and generate force for restoring the second resetting piece and/or the third resetting piece.
Furthermore, the tube 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, 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 first resetting piece is disposed on the first limiting portion and connected to the inner sleeve, and when the second driving shaft pushes the inner sleeve to move toward the head end, the first resetting piece is compressed.
Furthermore, the third resetting piece is arranged on the second limiting part and is 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 clamp applier shaft assembly further comprises a clamping bin arranged in the tube body, and the clamping bin is used for containing the surgical clamp.
Furthermore, the pushing and clamping assembly comprises a pushing and clamping rod and a clamping delivering piece, and the pushing and clamping rod is used for pushing a first surgical clamp close to the head end in the clamping bin to move towards the head end; 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 a first surgical clamp close to the head end; 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.
Further, the firing assembly comprises a side wing part connected with the third reset part, a firing shaft connected with the side wing part and a firing block fixed in the tube body, the forceps clip is arranged at the head end of the firing shaft and connected with the firing block, and the main shaft pushes the firing shaft to move towards the head end relative to the firing piece so as to close the forceps clip and complete firing.
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 component, a working head for selecting the handle component and a clip applier shaft component, wherein the clip applier shaft component 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 inner sleeve and the outer sleeve are arranged in the tube body, and the second driving shaft is used for pushing the inner sleeve to move relative to the outer sleeve, so that a gun body of the clip applier can stretch; and, through setting up the first piece that resets of connecting tube body and interior sleeve pipe, can reset the body of a gun. Therefore, the clip applier shaft assembly and the gun body of the medical surgical clip applier can be extended and retracted, for example, when endoscopic surgery is performed, the inner sleeve can be pulled outwards relative to the outer sleeve; when the open surgery is performed, the surgical instrument can not be pulled out; the inner sleeve can also be pulled out to any desired length on the day. It meets the need for clip appliers of varying length during surgery, reducing surgical risks and reducing instrument costs.
Meanwhile, the clip applier shaft assembly and the medical surgical clip applier are also provided with a second reset piece and a third reset piece, when a driving device of the medical surgical clip applier drives the main shaft to move towards the head end, the second reset piece deforms and pushes the push-clip assembly to move, then the main shaft contacts 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 can also complete the functions of pushing and clamping, delivering and triggering and resetting the device only by driving the main shaft to move, thereby simplifying the operation process and reducing the surgical risks.
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
Fig. 1-3 are schematic views of a clip applier shaft assembly, according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of the distal end of the clip applier shaft assembly shown in FIG. 1;
FIG. 5 is a schematic illustration of the middle frame portion of the clip applier shaft assembly shown in FIG. 1;
fig. 6 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 body 10 having a cavity structure, and a main shaft 1, a clip pushing assembly 2, a firing assembly 3, and an outer sleeve 4 and an inner sleeve 5 partially disposed in the tube body 10 and sleeved outside the clip applier shaft assembly 100, wherein the outer sleeve 4 is fixedly connected to the tube body 10 and disposed outside the inner sleeve 5, and the inner sleeve 5 is movably disposed in the tube body and can move relative to the outer sleeve 4. The direction indicated by arrow a in fig. 1 is the head end of clip applier shaft assembly 100, the opposite direction is the tail end, the tail end of clip applier shaft assembly 100 is connected to the working head of the clip applier and driven by the driving device in the working head of the clip applier, the head end is provided with jaws 200, and the driving device drives clip applier shaft assembly 100 to open and close (fire) jaws 200. The driving device is provided with a first driving shaft (not shown) and a second driving shaft (not shown), the inner sleeve 5 is selectively connected with the second driving shaft, and the driving device drives the second driving shaft to move the inner sleeve 5 relative to the outer sleeve 4, so that the gun body is extended and contracted. The first driving shaft is selectively connected with the main shaft 1, and the first driving shaft directly or indirectly pushes the pushing and clamping assembly 2 and the firing assembly 3 to move by pushing the main shaft 1 to move towards the head image direction, so that the clamping feeding and firing processes of the surgical clamp are realized.
Those skilled in the art will appreciate that clip applier shaft assembly 100 is connected to a clip applier working head, and a drive means is provided within the clip applier working head to drive clip applier shaft assembly 100. At present, the common driving devices include motor driving, screw driving, ratchet driving, etc., and what kind of driving method is adopted does not affect the technical features of the present invention, as long as it can respectively realize the movement of the main shaft 1 and the inner sleeve 5 through the driving shaft.
In the present device, the clip applier shaft assembly 100 further comprises a first reset member 6 disposed in the housing 10, the first reset member 6 connects the inner sleeve 5 and the housing 10, and when the second driving shaft pushes the inner sleeve 5 to move, the first reset member 6 deforms and generates a force to restore it to its original shape.
In this embodiment, a second reset part 7 for connecting the main shaft 1 and the push-clamp assembly 2, and a third reset part 8 for connecting the firing assembly 3 and the tube body 10 are further provided. The second reset piece 7 and the third reset piece 8 are both arranged in the tube body 10, and when the main shaft 1 moves towards the head end direction, the second reset piece 7 and/or the third reset piece 8 deform and generate a force for restoring the original shape. In this embodiment, the first restoring member 6, the second restoring member 7 and the third restoring member 8 are springs, but in other embodiments, other elastic members may be used. It will be appreciated by those skilled in the art that the spring may provide a restoring force by being compressed or stretched, taking the first return member 6 as an example: if the first reset piece 6 is arranged between the inner sleeve 5 and the tube body in the tail end direction thereof, when the second driving shaft pushes the inner sleeve 5 to move towards the head end direction, the first reset piece 6 is stretched and generates a force for pulling the inner sleeve 5 back towards the tail end direction; if the first reset piece 6 is disposed between the inner sleeve 5 and the tube body in the direction of the head end thereof, when the second driving shaft pushes the inner sleeve 5 to move in the direction of the head end, the first reset piece 6 is compressed and generates a force pushing the inner sleeve 5 back in the direction of the tail end. The second restoring element 7 and the third restoring element 8 are identical and will not be described again here.
In this embodiment, 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 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. Preferably, the following components: the first restoring member 6 connects the inner sleeve 5 and the first position-limiting portion 101, the inner sleeve 5 is provided with a circular shaft 51 (indeed, in other embodiments, other connecting structures may be adopted) for connecting the first restoring member 6, and the second driving shaft is coaxially arranged with the circular shaft 51 so as to be pushed to move towards the head end. The third resetting piece 8 is arranged between the second limiting part 102 and the firing assembly 3. In the initial state, preferably, the first restoring member 6, the second restoring member 7 and the third restoring member 8 are all in a pre-compression state, so that the inner sleeve 5 can be pushed towards the head end direction for the first time when the second driving shaft abuts against the circular shaft 51; when the first driving shaft pushes the main shaft 1 to abut against the push clamp assembly 2 or the firing assembly 3, the push clamp feeding piece 2 or the firing assembly 3 can be pushed towards the head end direction at the first time.
The clip applier shaft assembly 100 of the present invention further comprises a clamping magazine 9 disposed within said body, said clamping magazine 9 being disposed within the inner sleeve 5 and being adapted to receive a surgical clip. The pushing and clamping assembly 2 comprises a pushing and clamping rod 21 and a clamping delivering piece 22, wherein the pushing and clamping rod 21 is used for pushing a first surgical clamp close to the head end in the clamping bin 9 to move towards the head end; the clip transporting sheet 22 comprises a clip transporting part 221 arranged at the head end, and in an initial state, the clip transporting part 221 is arranged at the rear end of a first surgical clip close to the head end; in the process of pushing the surgical clips, the main shaft 1 moves towards the head end direction to push the pushing and clamping rod 21 to send the first surgical clip into the forceps holder 200, and at this time, the clip sending part 221 of the clip sending piece 22 abuts against the head end of the clamping bin 9 to block the subsequent surgical clips. In addition, since the clamp delivering part 221 abuts against the clamping bin 9, when the first driving shaft continues to drive the main shaft 1 to move towards the head end, the clamp pushing rod 21 and the clamp delivering piece 22 are stationary.
The firing assembly 3 comprises a lateral wing portion 31 connected with the third resetting piece 8, a firing shaft 32 connected with the lateral wing portion 31, and a firing block 33 fixed in the tube body 10, the forceps holder 200 is arranged at the head end of the firing shaft 32 and connected with the firing block 33, and the firing block 33 is fixed in the tube body 10. The jaw 200 is provided with an X-shaped slot (not shown), and the firing block 22 is connected to the jaw 200 by inserting a connecting pin (not shown) into the X-shaped slot. When the first drive shaft pushes the main shaft 1 to move the firing shaft 32 to the head end, the connecting pin on the firing block 33 moves in the X-shaped slot to close and/or shape the jaws 200 and the surgical clip positioned or loaded therebetween. This is prior art and will not be described in detail here. Preferably, the X-slot is sized to couple the entire length of the pin movement required to move the jaws 200 from the fully open position to the fully closed position, thereby defining and controlling the length of the closing stroke of the jaws 200.
In addition, in an initial state, a preset distance is arranged between the main shaft 1 and the firing shaft 32, and the length of the preset distance is greater than or equal to that of one surgical clip. The design enables the driving part 1 to push the pushing and clamping assembly 2 to push the head end of the surgical clip into the clamp 200, and the head end of the surgical clip can just touch the firing assembly 3 to push the firing shaft 32. In the present embodiment, a link 34 is provided between the firing shaft 32 and the wing 31, and the main shaft 1 moves the firing shaft 32 in the head end direction by abutting against the link 34. When the firing shaft 32 moves in the direction of the head end, the wing portion 31 is carried by the firing shaft, and the third restoring member 8 is compressed.
The clamp applier shaft assembly comprises an initial state, a clamp delivering state, a triggering state and a resetting state, and the specific working process and principle are as follows:
in the initial state, the first reset piece 6, the second reset piece 7 and the third reset piece 8 are all in a pre-compression state, the main shaft 1 is arranged at the extreme end in the tube body 10 and is separated from the firing shaft 32 of the firing assembly 3 by a surgical clip length, and the wing part 31 is arranged close to or closely attached to the first limiting part 101. The circular shaft 51 and the inner sleeve 5 can now be pushed to move by driving the second drive shaft, so that the frame of the clip applier has the desired length, and then the second drive shaft is stationary, so that the length of the frame is fixed and the first return member 6 is compressed.
When the surgical clip is in the clip feeding state, the first driving shaft drives the main shaft 1 to move towards the head end, and since the second resetting piece 7 is in the pre-compression state, the second resetting piece pushes the clip pushing assembly 2 to move towards the head end at the first time, the clip pushing rod 21 pushes the first surgical clip close to the head end into the forceps holder 200, and at the moment, the clip feeding portion 221 on the clip feeding piece 22 abuts against the head end of the clamping bin 9, so that the second surgical clip is prevented from moving into the forceps holder 200.
In the cocked state, the first driving shaft continues to move toward the head end, and at this time, the clip pushing assembly 2 is still because the clip delivering part 221 of the clip delivering piece 22 abuts against the clip containing bin 9. The main shaft 1 pushes the firing shaft 32 in the direction of the head end through the push link 34, and the surgical clip in the forceps holder 200 is closed and fired by the firing block 33, and the third reset unit 8 connected to the flank portion 31 is compressed.
During the reset state, after the percussion is finished, the first driving shaft moves reversely to the initial position, and the push clamp assembly 2 and the percussion assembly 3 reset to the initial state under the elastic action of the second reset piece 7 and the third reset piece 8.
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.
By retracting the second drive shaft, the circular shaft 51 and the inner sleeve 5 are returned to the initial state by the action of the first return element 6.
Referring to fig. 6, 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 5). It will be appreciated by those skilled in the art that clip applier may be operated by providing an actuator assembly other than handle assembly 400, and that handle assembly 400 or actuator assembly are well known in the 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 screw driving, motor driving or ratchet driving, which are all the prior art and will not be described herein.
In summary, the following steps: according to the clip applier shaft assembly and the medical operation clip applier, the inner sleeve and the outer sleeve are arranged in the tube body, and the second driving shaft is used for pushing the inner sleeve to move relative to the outer sleeve, so that a gun body of the clip applier can stretch; and, through setting up the first piece that resets that connects body and interior sleeve pipe, can reset the body of a gun. Therefore, the clip applier shaft assembly and the gun body of the medical surgical clip applier can be extended and retracted, for example, when endoscopic surgery is performed, the inner sleeve can be pulled outwards relative to the outer sleeve; when the open surgery is performed, the surgical instrument can not be pulled out; the inner sleeve can also be pulled out to any desired length on the day. It meets the need for clip appliers of varying length during surgery, reducing surgical risks and reducing instrument costs.
Meanwhile, the clip applier shaft assembly and the medical surgical clip applier are also provided with a second reset piece and a third reset piece, when a driving device of the medical surgical clip applier drives the main shaft to move towards the head end, the second reset piece deforms and pushes the push-clip assembly to move, then the main shaft contacts 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 can also finish the functions of clamping pushing, clamping delivering, triggering and resetting the device only by driving the main shaft to move, simplify the operation process and reduce surgical risks.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 should be subject to the appended claims.
Claims (6)
1. A clip applier shaft assembly is used for being connected with a clip applier working head, a driving device is arranged in the clip applier working head, the clip applier shaft assembly is provided with a head end and a tail end which are opposite, a jaw is arranged at the head end of the clip applier shaft assembly, and the tail end of the clip applier shaft assembly is connected with the clip applier working head; wherein the drive device includes a first drive shaft and a second drive shaft driven thereby, the clip applier shaft assembly comprising:
a tube having a cavity;
an outer sleeve and an inner sleeve at least partially received within the tube, the outer sleeve being fixed to the tube, the inner sleeve being selectively coupled to the second drive shaft, the drive mechanism moving the inner sleeve relative to the outer sleeve by driving the second drive shaft;
a main shaft selectively connected to the first driving shaft, the driving device moving the main shaft by driving the first driving shaft;
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 and is used for firing the surgical clip arranged in the forceps jaws;
the clip applier shaft assembly further comprises a first reset piece arranged in the tube body, the first reset piece is connected with the inner sleeve and the tube body, and when the second driving shaft pushes the inner sleeve to move, the first reset piece deforms and generates a force for enabling the first reset piece to restore to the original shape;
the clip applier shaft assembly further comprises a second reset piece and a third reset piece which are arranged in the tube body, the second reset piece is connected with the main shaft and the clip pushing assembly, and the third reset piece is connected with the firing assembly and the tube body; when the main shaft moves towards the head end direction, the second resetting piece and/or the third resetting piece deform and generate a force for restoring the second resetting piece and/or the third resetting piece;
the firing assembly comprises a tube body, a firing assembly and a trigger assembly, wherein 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;
in an initial state, the first resetting piece is arranged on the first limiting part and connected with the inner sleeve, and when the second driving shaft pushes the inner sleeve to move towards the head end direction, the first resetting piece is compressed;
the third resetting piece is arranged on the second limiting part and is 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.
2. The clip applier shaft assembly of claim 1, further comprising a clamping cartridge disposed within said tube, said clamping cartridge for receiving a surgical clip.
3. The clip applier shaft assembly of claim 2, wherein said pusher-clip assembly includes a pusher-clip bar and a clip transport bar, said pusher-clip bar for pushing a first surgical clip within said cartridge proximate said head end toward said head end; 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 a 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.
4. The clip applier shaft assembly of claim 1, wherein said firing assembly includes a wing portion connected to said third reset member, a firing shaft connected to said wing portion, and a firing block secured within said tube, said jaws disposed at a head end of said firing shaft and connected to said firing block, said main shaft urging said firing shaft toward said head end relative to said firing plate to close said jaws to complete firing.
5. The clip applier shaft assembly of claim 4, wherein in an initial state, a predetermined distance is provided between said main shaft and said firing shaft, said predetermined distance being greater than or equal to a length of one of said surgical clips.
6. 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 5 connected to said working head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911021555.3A CN112704538B (en) | 2019-10-25 | 2019-10-25 | Clip applier shaft assembly and medical surgical clip applier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021555.3A CN112704538B (en) | 2019-10-25 | 2019-10-25 | Clip applier shaft assembly and medical surgical clip applier |
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| CN112704538A CN112704538A (en) | 2021-04-27 |
| CN112704538B true CN112704538B (en) | 2022-11-29 |
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| CN115337068B (en) * | 2022-10-18 | 2023-01-10 | 苏州英途康医疗科技有限公司 | Clamping mechanism and clamping device thereof |
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