Running-firing titanium clamp

Abstract

The running-firing titanium clamp comprises a handle seat, a movable handle rotationally installed on the lower portion of the handle seat and an outer tube fixedly installed at the far end of the handle seat, and a clamp head, a nail pushing piece, a nail bin, a clamp head fixing piece suitable for closing the clamp head and a nail pushing seat suitable for pushing the nail pushing piece to move forwards are arranged in the outer tube. A plurality of titanium nails are sequentially clamped in the nail bin in the length direction, a transmission assembly and a shifting fork are arranged in the handle seat, the transmission assembly comprises a first transmission seat and a second transmission seat which are distributed in a V shape, and the lower ends of the first transmission seat and the second transmission seat are rotationally connected with the movable handle; the upper end of the first transmission seat and the upper end of the second transmission seat are elastically connected and fixedly connected with the forceps head fixing piece and the nail pushing seat respectively, the far end of the nail pushing piece makes contact with the titanium nail close to one end of the handle seat, and the shifting fork is matched with the second transmission seat and suitable for clamping the second transmission seat. According to the utility model, the structure is simplified while the running-firing function is realized, and the manufacturing cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a continuous-fire titanium clamp. Background Art

[0002] A clip applier is a surgical instrument used to clamp tissue in surgical operations. However, most of the clip appliers in the prior art are single-shot appliers, that is, the tissue clip must be reinstalled at the clamp head after each clip application, which results in low surgical efficiency.

[0003] The Chinese invention application with the authorization announcement number CN 113796917 A discloses a continuous clip applying mechanism applied to continuous clip applying forceps. In view of the problem that most of the clip applying forceps in the prior art are single-shot applying forceps, resulting in low surgical efficiency, a continuous clip applying mechanism applied to continuous clip applying forceps is provided, including a clip mounting structure installed on the clip applying forceps housing, the clip mounting structure including a clip chamber and an outer push rod assembly, a clip assembly that can accommodate at least two tissue clips is arranged in the clip chamber, a portion of the outer push rod assembly extends into the clip chamber and is pressed on the clip assembly, and a driving handle is rotatably connected to the clip applying forceps housing, and the driving handle is drivingly connected to the outer push rod assembly. By separately providing a clip assembly that can pre-install several tissue clips in the clip mounting structure, the driving handle can be used to push the outer push rod assembly during the operation to push the tissue clips in the clip assembly out of the clip in sequence, thereby achieving continuous clamping. However, the overall structure is complex, there are many parts, and the assembly is difficult, resulting in high costs. Utility Model Content

[0004] The purpose of the utility model is to propose a continuous-firing titanium clamp in view of the deficiencies in the prior art, which simplifies the structure while realizing the continuous-firing function, thereby effectively reducing the manufacturing cost.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] A continuous-fire titanium clamp comprises a handle seat, a movable handle rotatably mounted on the lower part of the handle seat, and an outer tube fixedly mounted on the distal end of the handle seat, wherein a clamp head, a nail pushing plate, a nail magazine, a clamp head fixing plate suitable for closing the clamp head, and a nail pushing seat suitable for pushing the nail pushing plate forward are arranged in the outer tube, a plurality of titanium nails are clamped in sequence along the length direction in the nail magazine, a transmission assembly and a shift fork are arranged in the handle seat, the transmission assembly comprises a first transmission seat and a second transmission seat which are distributed in a V shape and the lower ends of which are both rotatably connected to the movable handle, the upper ends of the first transmission seat and the second transmission seat are elastically connected and fixedly connected to the clamp head fixing plate and the nail pushing seat respectively, the distal end of the nail pushing plate contacts the titanium nail close to one end of the handle seat, the shift fork cooperates with the second transmission seat and is suitable for clamping the second transmission seat.

[0007] Furthermore, the first transmission seat includes a first connecting rod and a connecting seat which is rotatably mounted on the upper end of the first connecting rod and movably mounted in the handle seat along the axial direction of the outer tube. The lower end of the first connecting rod is hinged to the movable handle. The pliers head and the pliers head fixing plate are respectively fixed and movably arranged in the outer tube along the axial direction. The proximal end of the pliers head fixing plate is fixedly connected to the connecting seat, and the distal end cooperates with the pliers head and is suitable for closing the pliers head.

[0008] Furthermore, the distal end of the pliers head is symmetrically provided with pliers claws to form a clamping opening, the side of the pliers claw is provided with a guide platform, the outer side of the guide platform is provided with an inclined surface approaching the center, the distal end of the pliers head fixing plate is an arc surface, and both sides of the arc surface extend to the corresponding outer side of the guide platform and contact the inclined surface.

[0009] Furthermore, the second transmission seat includes a second connecting rod and a connecting piece which is rotatably mounted on the upper end of the second connecting rod and movably mounted in the handle seat along the axial direction of the outer tube. The lower end of the second connecting rod is hinged to the movable handle, the distal end of the connecting piece is fixedly connected to the pin pusher seat, and is provided with a bayonet adapted to the shift fork.

[0010] Furthermore, the nail pushing seat is movably arranged along the axial direction of the outer tube and is provided with a plurality of wedge-shaped grooves arranged along the length direction, and a first boss suitable for being inserted into the wedge-shaped groove is provided on a plane opposite to the nail pushing sheet and the nail pushing seat.

[0011] Furthermore, a through hole is provided on the nail pushing piece, and a spring piece integrally formed with the nail pushing piece is provided in the through hole, and the other end of the spring piece is tilted toward one side of the nail pushing seat to form the first boss.

[0012] Furthermore, a second boss is provided at the proximal end of the nail pushing seat, a strip hole with a length equal to the moving distance of the titanium nail is provided on the outer tube, and the second boss is axially movable in the strip hole.

[0013] Furthermore, a spring is connected between the upper ends of the first transmission seat and the second transmission seat.

[0014] Furthermore, a baffle is provided at the distal end of the nail magazine, a wedge-shaped hole and a third boss are provided on the nail pushing plate, and the distal end of the nail pushing seat and the third boss are suitable for respectively engaging with the wedge-shaped hole and the baffle after the nail pushing seat fires the last titanium nail.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model drives the second transmission seat and the first transmission seat to move respectively through the movable handle, thereby driving the nail pusher seat and the clamp head fixing plate to respectively realize the firing and matching of titanium nails. During this process, due to the influence of the shift fork, the second transmission seat is stuck after each grip of the movable handle, making it impossible to send out the titanium nail. The movable handle needs to be gently moved to realize that the titanium nails in the nail magazine are replenished one by one by the nail pusher plate while the titanium nails are being sent out, thereby realizing the continuous firing and matching of titanium nails controlled by a movable handle at the same time. The overall structure is more concise, and the manufacturing cost is effectively reduced.

[0017] (2) The first transmission seat of the utility model drives the connecting seat to move through the first connecting rod, thereby realizing the reciprocating motion of the clamp head fixing plate fixedly connected to the connecting seat, with a simple structure and reliable transmission.

[0018] (3) The utility model provides mutually matching arc surfaces and a guide platform with an inclined surface, so that the jaws of the clamp are naturally retracted when the clamp head fixing plate moves forward, thereby achieving the closure of the clamping opening.

[0019] (4) The second transmission seat of the utility model drives the connecting plate to move through the second connecting rod, thereby pulling the push pin seat to move. By providing a bayonet on the connecting plate, the shift fork can be naturally inserted into it, thereby realizing the limitation of the second transmission seat.

[0020] (5) The utility model uses the wedge-shaped groove and the first boss that cooperate with each other to drive the nail pushing piece to move forward in steps during the reciprocating motion of the nail pushing seat. The structure is simple, complex transmission structure is omitted, and movement is stable.

[0021] (6) The utility model forms the first boss by means of a spring sheet that is tilted at one end, so that the first boss has a certain elastic deformation capability, and the pushing process is more labor-saving.

[0022] (7) The utility model strictly limits the tightness of the movable handle each time it is held through the cooperation of the second boss and the strip hole, ensuring that the movement stroke of the nail pusher each time is exactly the same as the firing stroke of the titanium nail, thereby improving the stability of successful firing.

[0023] (8) The utility model realizes elastic connection between two transmission seats by setting springs, which has a simple structure and low manufacturing cost.

[0024] (9) The utility model forms a safety mechanism by providing a baffle, a wedge-shaped hole and a third boss, so that after all the titanium nails are fired, the distal end of the nail pusher is inserted into the wedge-shaped hole and the third boss is inserted into the baffle, thereby avoiding empty firing and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the structure of the titanium nail of the utility model when it is not fired;

[0027] Figure 2 This is a schematic diagram of the structure of the titanium nail of the utility model after firing and anastomosis;

[0028] Figure 3 for Figure 1 A magnified view of the distal part;

[0029] Figure 4 for Figure 2 A magnified view of the distal part;

[0030] Figure 5 It is a schematic diagram of the assembly structure of the nail pushing seat and the nail pushing sheet of the utility model;

[0031] Figure 6 It is a schematic diagram of the partial structure of the nail magazine of the utility model.

[0032] The reference numerals in the accompanying drawings are:

[0033] Handle base 1, movable handle 2, outer tube 3, strip hole 3-1, pliers head 4, pliers claw 4-1, guide platform 4-1-1, nail pushing piece 5, spring piece 5-1, wedge-shaped hole 5-2, third boss 5-3, nail magazine 6, baffle 6-1, pliers head fixing plate 7, arc surface 7-1, nail pushing seat 8, wedge-shaped groove 8-1, second boss 8-2, shift fork 9, first transmission seat 10, first connecting rod 10-1, connecting seat 10-2, second transmission seat 11, second connecting rod 11-1, connecting plate 11-2, spring 12. DETAILED DESCRIPTION

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] (Example 1)

[0036] like Figures 1 to 6The illustrated continuous-fire titanium clamp comprises a handle base 1, a movable handle 2, an outer tube 3, a pliers head 4, a nail pusher 5, a nail magazine 6, a pliers head fixing plate 7, a nail pusher seat 8, a transmission assembly and a shift fork 9, wherein the transmission assembly and the shift fork are both arranged in the handle base 1, and the transmission assembly comprises a first transmission seat 10 and a second transmission seat 11 which are distributed in a V shape. The outer tube 3 is fixedly mounted at the far end of the handle base 1, the upper left end of the movable handle 2 is hinged to the lower part of the handle base, and the upper right end is hinged to the lower ends of the first transmission seat 10 and the second transmission seat 11. The first transmission seat 10 and the second transmission seat 11 are distributed in a V shape, and the upper ends are elastically connected to the pliers head fixing plate 7 and the nail pusher seat 8 respectively, and the shift fork 9 cooperates with the second transmission seat 11 and is suitable for clamping the second transmission seat 11. The pliers head 4, the nail pushing piece 5, the nail magazine 6, the pliers head fixing piece 7 and the nail pushing seat 8 are all arranged in the outer tube 3, wherein the pliers head fixing piece 7 is used to close the pliers head, the nail pushing seat 8 cooperates with the nail pushing piece 5, and the far end extends to the far end of the nail magazine to push the nail pushing piece 5 forward. The nail magazine 6 is clamped with multiple titanium nails in sequence along its length direction, and the far end of the nail pushing piece 5 is in contact with the titanium nail near one end of the handle seat 1.

[0037] The second transmission seat 11 and the first transmission seat 10 are driven by the movable handle 2 to move respectively, thereby driving the nail pusher seat 8 and the clamp head fixing plate 7 to respectively realize the firing and matching of the titanium nails. In this process, affected by the shift fork 9, the second transmission seat 11 is stuck each time the movable handle is gripped, making it impossible for the titanium nail to be delivered. The movable handle needs to be gently moved to achieve the titanium nails in the nail magazine to be filled one by one by the nail pusher plate 5 while the titanium nails are being delivered, thereby achieving the continuous firing and matching of the titanium nails controlled by a movable handle 2 at the same time. The overall structure is simpler, and the manufacturing cost is effectively reduced.

[0038] Specifically, a spring 12 is connected between the upper ends of the first transmission seat 10 and the second transmission seat 11 to achieve elastic connection, simple structure and low cost. The first transmission seat 10 includes a first connecting rod 10-1 and a connecting seat 10-2 which is rotatably mounted on the upper end of the first connecting rod 10-1 and movably mounted in the handle seat 1 along the axial direction of the outer tube 3. The lower end of the first connecting rod 10-1 is hinged to the movable handle 2, and the pliers head 4 and the pliers head fixing plate 7 are respectively fixed and movably arranged in the outer tube 3 along the axial direction. The proximal end of the pliers head fixing plate 7 is fixedly connected to the connecting seat 10-2, and the distal end is provided with an arc surface 7-1. The distal end of the pliers head 4 is symmetrically provided with a clamp claw 4-1 to form a clamping opening. The side of the clamp claw 4-1 is provided with a guide platform 4-1-1, and the outer side of the guide platform 4-1-1 is provided with an inclined surface close to the center, and both sides of the arc surface 7-1 extend to the corresponding outer side of the guide platform 4-1-1 and contact the inclined surface. The first transmission seat 10 drives the connecting seat 10-2 to move through the first connecting rod 10-1, thereby realizing the reciprocating motion of the clamp head fixing plate 7 fixed to the connecting seat 10-2. The structure is simple and the transmission is reliable. Through the cooperation of the arc surface 7-1 and the guide platform 4-1-1 with an inclined surface, the clamp claw 4-1 is naturally retracted when the clamp head fixing plate 7 moves forward, thereby realizing the closure of the clamping opening.

[0039] The second transmission seat 11 includes a second connecting rod 11-1 and a connecting piece 11-2 which is rotatably mounted on the upper end of the second connecting rod 11-1 and movably mounted in the handle seat 1 along the axial direction of the outer tube 3. The lower end of the second connecting rod 11-1 is hinged to the movable handle 2. The distal end of the connecting piece 11-2 is fixedly connected to the push pin seat 8 and is provided with a bayonet adapted to the shift fork 9. The second connecting rod 11-1 drives the connecting piece 11-2 to move, thereby pulling the push pin seat 8 to move. Through the setting of the bayonet, the shift fork 9 can be naturally inserted into it, thereby realizing the position limitation of the second transmission seat 11. The push pin seat 8 is movably arranged along the axial direction of the outer tube 3 and is provided with a plurality of wedge-shaped grooves 8-1 arranged along the length direction. The first boss suitable for inserting into the wedge-shaped groove 8-1 is provided on the plane opposite to the push pin plate 5 and the push pin seat 8, thereby realizing that the push pin seat 8 drives the push pin plate 5 to move step by step. In this embodiment, a through hole is provided on the nail pushing piece 5, and a spring piece 5-1 integrally formed with the nail pushing piece 5 is provided in the through hole. The other end of the spring piece 5-1 tilts toward one side of the nail pushing seat 8 to form a first boss, so that the first boss has a certain elastic deformation ability, and the pushing process is more labor-saving. A second boss 8-2 is also provided at the proximal end of the nail pushing seat 8, and a strip hole 3-1 with a length equal to the moving distance of the titanium nail is provided on the outer tube 3. The second boss 8-2 is axially movable in the strip hole 3-1, so as to strictly limit the tightness of each grip of the movable handle 2, ensure that the moving stroke of the nail pushing seat 8 each time is exactly the same as the firing stroke of the titanium nail, and improve the stability of successful firing.

[0040] In order to improve the safety of use, the nail magazine 6 of this embodiment is provided with a baffle 6-1 near the distal end, and the nail pusher 5 is provided with a wedge-shaped hole 5-2 and a third boss 5-3. When the nail pusher 8 fires the last titanium nail, the distal end and the third boss 5-3 are respectively engaged with the wedge-shaped hole 5-2 and the baffle 6-1. The baffle 6-1, the wedge-shaped hole 5-2 and the third boss 5-3 form a safety mechanism to avoid empty firing, thereby improving the safety of use.

[0041] The working process of this embodiment:

[0042] The movable handle 2 is gripped for the first time, driving the first transmission seat 10 and the second transmission seat 11 away from each other, thereby driving the clamp head fixing plate 7 and the nail pusher seat 8 to move respectively, so as to pull the distal end of the nail pusher seat 8 to the distal first titanium nail, waiting for firing, and releasing the handle. Under the action of elastic force, the first transmission seat 10 is reset, and under the cooperation of the shift fork 9, the second transmission seat 11 remains stationary;

[0043] Slightly hold the movable handle 2, the first transmission seat 10 is almost immobile, the second transmission seat 11 is separated from the shift fork 9, and the nail pusher seat 8 drives the nail pusher piece 5 matched therewith to move, thereby sending out the titanium nails and making the subsequent titanium nails move forward as a whole to fill the positions one by one;

[0044] Grip the movable handle 2 again, and the coordinated clamp head fixing piece 7 and nail pushing piece 5 move to complete the closing of the clamp head 4, so as to fit the delivered titanium nails. At the same time, the distal end of the nail pushing seat 8 is pulled to the first titanium nail again, waiting for the next firing, so that continuous firing of titanium nails can be achieved by operating one movable handle. The overall structure is simple, the assembly is convenient, and the manufacturing cost is low.

[0045] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous firing titanium clamp, characterized in that: It includes a handle seat, a movable handle rotatably mounted on the lower part of the handle seat, and an outer tube fixedly mounted on the distal end of the handle seat, wherein a pliers head, a pliers head fixing plate, a nail pushing plate, a nail pushing seat and a nail magazine are arranged in the outer tube, and a plurality of titanium nails are clamped in sequence in the nail magazine along the length direction, and a transmission assembly and a shift fork are arranged in the handle seat, wherein the transmission assembly includes a first transmission seat and a second transmission seat which are distributed in a V shape and the lower ends of which are both rotatably connected to the movable handle, the upper ends of the first transmission seat and the second transmission seat are elastically connected and fixedly connected to the pliers head fixing plate and the nail pushing seat respectively, the front end of the nail pushing plate contacts the titanium nail close to one end of the handle seat, the pliers head fixing plate cooperates with the pliers head and is suitable for closing the pliers head, the nail pushing seat cooperates with the nail pushing plate and is suitable for driving the nail pushing plate to move toward the distal end, and the shift fork cooperates with the second transmission seat and is suitable for clamping the second transmission seat.

2. A continuous firing titanium clamp according to claim 1, characterized in that: The first transmission seat includes a first connecting rod and a connecting seat which is rotatably mounted on the upper end of the first connecting rod and movably mounted in the handle seat along the axial direction of the outer tube. The lower end of the first connecting rod is hinged to the movable handle. The pliers head and the pliers head fixing plate are respectively fixed and movably arranged in the outer tube along the axial direction. The proximal end of the pliers head fixing plate is fixedly connected to the connecting seat, and the distal end cooperates with the pliers head and is suitable for closing the pliers head.

3. A continuous firing titanium clamp according to claim 2, characterized in that: The distal end of the pliers head is symmetrically provided with pliers claws to form a clamping opening, the side of the pliers claw is provided with a guide platform, the outer side of the guide platform is provided with an inclined surface approaching the center, the distal end of the pliers head fixing plate is an arc surface, both sides of the arc surface extend to the corresponding outer side of the guide platform and contact the inclined surface.

4. The continuous firing titanium clamp according to claim 1, characterized in that: The second transmission seat includes a second connecting rod and a connecting piece which is rotatably mounted on the upper end of the second connecting rod and movably mounted in the handle seat along the axial direction of the outer tube. The lower end of the second connecting rod is hinged to the movable handle, the distal end of the connecting piece is fixedly connected to the pin pusher seat, and is provided with a bayonet adapted to the shift fork.

5. The continuous firing titanium clamp according to claim 4, characterized in that: The nail pushing seat is movably arranged along the axial direction of the outer tube and is provided with a plurality of wedge-shaped grooves arranged along the length direction. A first boss suitable for being inserted into the wedge-shaped groove is provided on a plane opposite to the nail pushing sheet and the nail pushing seat.

6. The continuous firing titanium clamp according to claim 5, characterized in that: The nail pushing piece is provided with a through hole, and a spring piece integrally formed with the nail pushing piece is provided in the through hole, and the other end of the spring piece is tilted toward one side of the nail pushing seat to form the first boss.

7. The continuous firing titanium clamp according to claim 4, characterized in that: A second boss is provided at the proximal end of the nail pushing seat, a strip hole with a length equal to the moving distance of the titanium nail is provided on the outer tube, and the second boss is movably arranged in the strip hole along the axial direction.

8. The continuous firing titanium clamp according to claim 1, characterized in that: A spring is connected between the upper ends of the first transmission seat and the second transmission seat.

9. The continuous firing titanium clamp according to claim 1, characterized in that: A baffle is provided at the distal end of the nail magazine, a wedge-shaped hole and a third boss are provided on the nail pushing plate, and the distal end of the nail pushing seat and the third boss are suitable for respectively engaging with the wedge-shaped hole and the baffle after the nail pushing seat fires the last titanium nail.

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