Disposable clip applier capable of repeatedly percussion titanium clip

Abstract

The utility model relates to a disposable clip applier capable of repeatedly percussion a titanium clip. Which comprises a handle assembly and a shaft rod assembly, the handle assembly is connected with the shaft rod assembly, the handle assembly comprises a shell and a trigger, and is characterized in that a driving mechanism is arranged in the shell, and the driving mechanism does reciprocating translational motion when the trigger is actuated; the shaft rod assembly comprises a pipe fitting, a tong head, a tong head seat, titanium clamps, a tong head closing rod and an automatic nail pushing mechanism, the multiple titanium clamps are arranged between a jaw of the tong head and the automatic nail pushing mechanism, the tong head closing rod is connected with the driving mechanism, the trigger pulls to drive the tong head closing rod to move forwards, and the automatic nail pushing mechanism is connected with the pipe fitting. And the tong head is deformed to clamp the titanium clip pushed out by the automatic nail pushing mechanism. According to the titanium clip filling device, the titanium clip can be automatically filled, the operation efficiency is improved, and reliable clamping of the titanium clip can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, in particular to a disposable clamp applicator capable of repeatedly firing titanium clamps. Background Art

[0002] In abdominal surgery, stopping bleeding is a major factor in the success of the operation. At present, clip applicators are mainly used for ligating blood vessels or tissues. In domestic laparoscopic surgery, the clip applicators used during the operation are mostly reusable single-shot clip applicators. After each clip application, the clip applicator must be removed from the surgical site and then filled with titanium clips, which may affect the efficiency of the operation and increase the amount of bleeding during the operation.

[0003] Existing clip appliers have the following disadvantages:

[0004] 1. After the clip applier fires a titanium clip, it needs to be removed from the surgical site and reloaded, which will affect the efficiency of the operation.

[0005] 2. There is no protective device to ensure whether the surgical clips are clamped properly, which may lead to accidents during the operation.

[0006] 3. The clamping force is difficult to control, and the operator needs to be careful, otherwise it may cause unnecessary damage to the titanium clip or have an adverse effect on the surgical process. Utility Model Content

[0007] In view of the above problems, the utility model provides a disposable clip applier capable of repeatedly firing titanium clips, which can realize automatic loading of titanium clips to improve surgical efficiency and ensure reliable clamping of the titanium clips.

[0008] To this end, the utility model adopts the following technical solution: a disposable clip applicator capable of repeatedly firing a titanium clip, comprising a handle assembly and a shaft assembly, wherein the handle assembly is connected to the shaft assembly, the handle assembly comprising a housing and a trigger, and characterized in that a driving mechanism is arranged in the housing, and the driving mechanism performs reciprocating translational motion when the trigger is actuated;

[0009] Preferably, the shaft rod assembly includes a pipe fitting, a pliers head, a pliers head seat, a titanium clamp, a pliers head closing rod and an automatic nail pushing mechanism. A plurality of titanium clamps are arranged between the jaws of the pliers head and the automatic nail pushing mechanism. The pliers head closing rod is connected to the driving mechanism. When the trigger is pulled, the pliers head closing rod moves forward, causing the pliers head to deform and clamp the titanium clamp pushed out by the automatic nail pushing mechanism.

[0010] Preferably, the driving mechanism comprises a first rack and a second rack which move in opposite directions, the first rack being connected to the clamp head closing rod, and the second rack being connected to the nail pushing rod of the automatic nail pushing mechanism.

[0011] Preferably, the automatic nail pushing mechanism further comprises a nail resisting piece, a nail pushing piece is arranged at the front end of the nail resisting piece, a guide rod is formed at the rear end of the nail pushing piece, a nail pushing spring is sleeved outside the guide rod, and the nail pushing spring is embedded in the central cavity of the nail resisting piece.

[0012] Preferably, the front end of the nail pushing rod forms a blocking portion for the titanium clip, and the blocking portion is a zigzag slope structure. Pulling the trigger drives the nail pushing rod to move backward to release the blocking of the titanium clip.

[0013] Preferably, the first rack and the second rack form ring sleeves at the front ends respectively, and the rear ends of the clamp head closing rod and the nail pushing rod form bayonet sockets matching the ring sleeves.

[0014] Preferably, the trigger comprises an upper end block and a lower wrench of an integral structure, the rear end face of the upper end block forms a trigger fixing tooth, a locking tooth is connected to the outer shell of the handle assembly via a small pin, and the locking tooth is connected to the rear of the upper end block via a torsion spring.

[0015] Preferably, the first rack further forms a connecting rod on the side, the connecting rod is connected to the rear end of the trigger upper end block via a pin, and the trigger is reset via a trigger reset torsion spring.

[0016] Preferably, a rotating sleeve is provided at the connection between the handle assembly and the shaft assembly, and the rotating sleeve is engaged with the outer wall of the pipe.

[0017] Preferably, the pipe fitting comprises two semicircular tubes, the titanium clamp is stored between one semicircular tube and a titanium clamp pressure plate, and the titanium clamp pressure plate is arranged between the clamp head closing rod and the nail pushing rod.

[0018] Preferably, a ball is arranged at the front end of the nail pushing piece, and a magnet attracted to the ball is arranged at the front part of the tube.

[0019] The beneficial effects of the utility model are as follows:

[0020] 1. Automatic loading of titanium clips can be achieved, eliminating the need to remove the clip applier from the surgical site and reload the titanium clips, thus improving surgical efficiency.

[0021] 2. The clamp can be held continuously during the firing process, and the titanium clip will not fall off easily when the clamp is released, ensuring reliable clamping.

[0022] 3. There is a sound prompt when the trigger is pulled to complete a shot, providing auditory instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is an exploded view of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the handle assembly of the utility model.

[0026] Figure 4 It is a structural schematic diagram of the handle assembly of the utility model in the firing state.

[0027] Figure 5 It is a structural schematic diagram of the pliers head of the utility model.

[0028] Figure 6 It is a schematic diagram of the driving mechanism of the utility model. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific embodiments.

[0030] like Figure 1-Figure 6 The disposable and re-firing titanium clip applier shown comprises a handle assembly A and a shaft assembly B. The handle assembly is connected to the shaft assembly, and the handle assembly comprises a housing and a trigger 21.

[0031] The handle assembly includes a left housing 1, a right housing 2, a trigger 21, and a driving mechanism 3 supported in the left housing and the right housing and actuable by the trigger, wherein the driving mechanism performs a reciprocating translation motion when the trigger is actuated.

[0032] The shaft assembly includes a pipe fitting, a pliers head 11, a pliers head seat 14, a titanium clamp 13, a pliers head closing rod 10, a titanium clamp pressure plate 7 and an automatic nail pushing mechanism. A plurality of titanium clamps are arranged between the jaws 29 of the pliers head and the automatic nail pushing mechanism. The pliers head closing rod 10 is connected to the driving mechanism 3. The trigger is pulled to drive the pliers head closing rod to move forward, so that the pliers head is deformed to clamp the titanium clamp 13 pushed out by the automatic nail pushing mechanism. The pliers head closing rod forms an outer frame sleeve at the front end, and touches the rear end inclined surface of the pliers head during the forward pushing process to deform the pliers head.

[0033] Specifically, the automatic nail pushing mechanism also includes a nail resisting piece 18, a nail pushing piece 17 is arranged at the front end of the nail resisting piece, a guide rod is formed at the rear end of the nail pushing piece, a nail pushing spring 19 is sleeved outside the guide rod, and the nail pushing spring is embedded in the central cavity of the nail resisting piece.

[0034] The front end of the push rod 9 forms a blocking part for the titanium clip, and the blocking part is a zigzag slope structure. The push rod moves backward to release the blocking of the titanium clip. The zigzag slope structure of the blocking part is inserted into the front end cavity of the titanium clip pressure plate 7 to form a block for the outer end titanium clip. When the push rod is pulled back, the restriction on the outer end titanium clip is released, and the titanium clip is pushed out by the push spring 19.

[0035] The driving mechanism includes two first racks 30 and second racks 31 that move in opposite directions. The first rack is connected to the clamp head closing rod 10, and the second rack 31 is connected to the nail pushing rod 9 of the automatic nail pushing mechanism. A gear 32 is installed between the first rack 30 and the second rack 31. Figure 6 shown.

[0036] Specifically, ring sleeves are formed at the front ends of the first rack and the second rack, and bayonet sockets matching the ring sleeves are formed at the rear ends of the clamp head closing rod and the nail pushing rod.

[0037] The trigger includes an upper block 27 and a lower trigger switch of an integral structure. The rear end face of the upper block forms a trigger fixing tooth 28. A small pin 25 is connected to a locking tooth 24 in the housing of the handle assembly. The locking tooth is connected to the rear of the upper block through a torsion spring 23. The front end of the upper block is connected to the right housing through a trigger pin 20, and the rear end is connected to a connecting rod 33 through another pin 22 to form a linkage.

[0038] Specifically, a connecting rod 33 is formed on the side of the first rack, and the connecting rod 33 is connected to the rear end of the trigger upper end block through a pin 22 , and the trigger is reset by a trigger reset torsion spring 26 .

[0039] When at least one titanium clip is loaded into the jaws, the titanium clip is fired and reset, the clip applier can provide an audible indication through the jumping cooperation of the locking teeth and the trigger fixing teeth.

[0040] When the trigger starts to move inward, the trigger contacts the locking teeth and cannot return to its original position. When the trigger moves to the proper position and the firing is completed, the trigger resets the torsion spring and the trigger disengages from the locking teeth, allowing the trigger to return to its original position.

[0041] In one embodiment, a rotating sleeve 6, a fixing ring 5 and a rubber ring 4 are arranged at the connection between the handle assembly and the shaft assembly, and a plurality of clamping blocks are formed on the inner wall of the front end of the rotating sleeve 6 to clamp the outer wall of the pipe. This structure enables the shaft assembly to rotate freely 360 degrees.

[0042] In one embodiment, the pipe fitting includes two upper outer tubes 8 and a lower outer tube 15, and the titanium clamp 13 is stored between the lower outer tube and the titanium clamping plate 7, and the titanium clamping plate 7 is arranged between the clamp head closing rod 10 and the nail pushing rod 9. The titanium clamping plate is fixed in the upper outer tube, and the distance between the titanium clamping plate and the upper outer tube at the head is less than the thickness of the titanium clamp, and the titanium clamp can be pushed out only when the pull rod moves forward.

[0043] In one embodiment, a ball 16 is disposed at the front end of the pin pusher 17, and a magnet 12 that attracts the ball is disposed at the front of the lower outer tube. After firing the last titanium clip, the ball in the pin pusher will enter the pliers head under the attraction of the magnet fixed to the lower outer tube, so that the pliers head cannot continue to close, thereby playing a protective role.

[0044] The implementation process of the utility model is as follows: the trigger moves inward, causing the connecting rod to move forward, driving the first rack in the gear rack assembly to move forward, thereby driving the clamp head closing rod connected to the first rack to move forward, causing the clamp head to deform and clamp the titanium clamp.

[0045] The first rack is connected to the gear, and the gear is connected to the second rack. The first rack moves forward to make the second rack move backward, driving the pull rod connected to the second rack to move backward, preparing for taking the next titanium clip. The trigger returns to its original position through the trigger reset torsion spring, thereby automatically pushing the titanium clip into place.

[0046] The shoulder of each titanium clip contacts the two legs of the next titanium clip. When the trigger of a titanium clip is automatically returned after firing, the titanium clip is automatically pushed to a distance under the action of the long spring and the nail push rod.

[0047] When at least one titanium clip is loaded into the jaws, the titanium clip is fired and reset, the clip applier can provide an audible indication through the jumping cooperation of the locking teeth and the trigger fixing teeth.

[0048] When the trigger starts to move inward, the trigger contacts the locking teeth and the trigger cannot return to its original position. When the trigger moves to the correct position and is in the firing completion state, the trigger reset torsion spring is used to disengage the trigger from the locking teeth and the trigger can return to its original position.

[0049] After firing the last titanium clip, the ball in the push rod will be attracted by the magnet fixed on the lower outer tube and enter the pliers head, making it impossible for the pliers head to continue closing, thus playing a protective role.

[0050] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A disposable reusable titanium clip applicator, comprising a handle assembly (A) and a shaft assembly (B), wherein the handle assembly is connected to the shaft assembly, the handle assembly comprising a housing and a trigger (21), characterized in that A driving mechanism (3) is disposed in the housing, and the driving mechanism performs reciprocating translational motion when the trigger is actuated; The shaft rod assembly comprises a pipe fitting, a pliers head (11), a pliers head seat (14), a titanium clamp (13), a pliers head closing rod (10) and an automatic nail pushing mechanism. A plurality of titanium clamps are arranged between the jaws of the pliers head and the automatic nail pushing mechanism. The pliers head closing rod (10) is connected to the driving mechanism (3). When the trigger is pulled, the pliers head closing rod moves forward, causing the pliers head to deform and clamp the titanium clamp (13) pushed out by the automatic nail pushing mechanism.

2. The disposable re-firing titanium clip applier according to claim 1, characterized in that The driving mechanism comprises a first rack (30) and a second rack (31) which move in opposite directions, the first rack being connected to the clamp head closing rod (10), and the second rack (31) being connected to the nail pushing rod (9) of the automatic nail pushing mechanism.

3. The disposable re-firing titanium clip applier according to claim 2, characterized in that The automatic nail pushing mechanism also includes a nail resisting piece (18), a nail pushing piece (17) is arranged at the front end of the nail resisting piece, a guide rod is formed at the rear end of the nail pushing piece, a nail pushing spring (19) is sleeved outside the guide rod, and the nail pushing spring is embedded in the central cavity of the nail resisting piece.

4. The disposable re-firing titanium clip applier according to claim 2 or 3, characterized in that The front end of the nail pushing rod (9) forms a blocking portion for the titanium clip, and the blocking portion is a zigzag inclined surface structure. Pulling the trigger drives the nail pushing rod to move backward to release the blocking of the titanium clip.

5. The disposable re-firing titanium clip applier according to claim 4, characterized in that The first rack and the second rack form ring sleeves at the front ends respectively, and the rear ends of the clamp head closing rod and the nail pushing rod form bayonet sockets matching the ring sleeves.

6. The disposable re-firing titanium clip applier according to claim 4, characterized in that The trigger comprises an upper end block (27) and a lower wrench of an integral structure, the rear end surface of the upper end block forms a trigger fixing tooth (28), a locking tooth (24) is connected to the housing of the handle assembly via a small pin (25), and the locking tooth is connected to the rear of the upper end block via a torsion spring (23).

7. The disposable re-firing titanium clip applier according to claim 5, characterized in that The first rack also forms a connecting rod (33) on the side, and the connecting rod (33) is connected to the rear end of the trigger upper end block via a pin (22). The trigger is reset via a trigger reset torsion spring (26).

8. The disposable re-firing titanium clip applier according to claim 5, characterized in that A rotating sleeve (6) is provided at the connection between the handle assembly and the shaft assembly, and the rotating sleeve is clamped on the outer wall of the pipe.

9. The disposable re-firing titanium clip applier according to claim 4, characterized in that The pipe fitting comprises two semicircular tubes, the titanium clamp is stored between one semicircular tube and a titanium clamping plate (7), and the titanium clamping plate (7) is arranged between a clamp head closing rod (10) and a nail pushing rod (9).

10. The disposable re-firing titanium clip applier according to claim 3, characterized in that A ball (16) is arranged at the front end of the nail-pushing piece (17), and a magnet (12) that attracts the ball is arranged at the front of the tube.

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