Surgical instrument pin shaft riveting device

Abstract

The utility model provides a surgical instrument pin shaft riveting device which comprises a bottom plate, a stop fixing plate, a linear guide rail assembly and a power assembly are sequentially arranged on the bottom plate from left to right, a stop ejector pin is arranged on the stop fixing plate, and a positioning assembly and a punching rod assembly are sequentially connected to the linear guide rail assembly in a sliding mode from left to right. The positioning assembly is used for assembling the surgical instrument tong head assembly, the punch rod assembly is used for being driven by the power assembly to impact a pin shaft in the surgical instrument tong head assembly, and the pin shaft is riveted through the combined action of the punch rod assembly and the stop ejector pin; the stop assembly is used for limiting the punch rod assembly so that the punch rod assembly cannot move relative to the linear guide rail assembly before riveting operation, at the moment, one end of the pin shaft makes contact with a stop ejector pin, and the other end of the pin shaft is pre-pressed by a punch rod in the punch rod assembly; after riveting operation is completed, the locking assembly is unlocked so that the punching rod assembly can move relative to the linear guide rail assembly. The device has the advantages of being stable in riveting quality, good in consistency and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting devices, in particular to a pin riveting device for a surgical instrument. Background Art

[0002] Surgical instruments used in laparoscopic surgery equipment include various needle holders, grasping forceps, electric hooks, electric scissors, etc., and their structure is mainly composed of a forceps head part and a base part. The forceps head part is generally composed of two movable joints, and the movable joints are connected by a pin shaft.

[0003] At present, the pin riveting operation of the movable joints of the pliers head is manual riveting. During manual riveting, because the pliers head is divided into a cylindrical structure, it is not easy to ensure that the end of the pin is located at the bottom, and it is not easy to ensure that the force direction of the pin is perpendicular to the bottom surface during riveting. The operator uses a hammer to hit the punch for riveting, and the force applied each time cannot be kept consistent, resulting in problems such as loose pins, over-tension, and damage in the riveted parts. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present application proposes a surgical instrument pin riveting device, which has the advantages of stable, reliable, consistent riveting quality and easy operation.

[0005] In order to achieve the above-mentioned purpose, the present application proposes a surgical instrument pin riveting device, including a base plate, on which a stop fixing plate, a linear guide assembly and a power assembly are arranged in sequence from left to right, a stop ejector is fixedly provided on the stop fixing plate, and the stop ejector is used to bear the pin riveting impact force in the surgical instrument clamp head assembly; a positioning assembly and a punch rod assembly are slidably connected in sequence from left to right on the linear guide rail assembly, wherein the positioning assembly is used to assemble the surgical instrument clamp head assembly, and the pin in the surgical instrument clamp head assembly is coaxial with the stop ejector and the punch rod in the punch rod assembly, and the punch rod assembly is used to The pin in the surgical instrument clamp assembly is impacted by the driving of the power assembly, and the pin in the surgical instrument clamp assembly is riveted through the joint action of the punch assembly and the stop ejector pin; the surgical instrument pin riveting device also includes a stop assembly, which is used to limit the punch assembly before the riveting operation so that it cannot move relative to the linear guide assembly. At this time, one end of the pin in the surgical instrument clamp assembly is in contact with the stop ejector pin, and the other end is pre-tightened by the punch in the punch assembly; after the riveting operation is completed, the stop assembly is unlocked so that the punch assembly can move relative to the linear guide assembly so that the surgical instrument clamp assembly can be replaced.

[0006] In some embodiments, the linear guide assembly includes a linear guide fixed on the base plate, and a first slider and a second slider are slidably connected to the linear guide, wherein the first slider is connected to the positioning assembly, and the second slider is connected to the punch assembly.

[0007] In some embodiments, the structure of the positioning assembly is as follows: it includes a first connecting plate connected to the first sliding block, a positioning shaft base is fixedly connected to the first connecting plate, a positioning shaft is provided on the positioning shaft base, a mounting hole for assembling the surgical instrument forceps assembly is provided on the upper surface of the positioning shaft, and an avoidance opening is provided on the outer side wall of the positioning shaft, each avoidance opening corresponds to each mounting hole one by one, and the corresponding mounting holes are connected to the avoidance opening to avoid each protrusion of the inner hole of the surgical instrument forceps assembly; a covering sleeve is also sleeved on the outer side of the positioning shaft, and the two are locked by screws, and an annular installation space is formed between the covering sleeve and the positioning shaft, and the annular installation space is used to install the surgical instrument forceps assembly, and an avoidance opening is provided on the covering sleeve to avoid the punch rod assembly.

[0008] In some embodiments, two mounting holes are spaced apart on the positioning shaft, respectively referred to as a first mounting hole and a second mounting hole, and a first avoidance opening and a second avoidance opening are opened on the outer side wall of the positioning shaft. The first avoidance opening is connected to the first mounting hole, and the second avoidance opening is connected to the second mounting hole, so as to avoid the two protrusions in the inner hole of the surgical instrument forceps assembly.

[0009] In some embodiments, a plunger is further provided on the covering sleeve, and the plunger is used to further fix the surgical instrument forceps assembly.

[0010] In some embodiments, the structure of the punch rod assembly is as follows: it includes a punch rod support seat connected to the second sliding block, a first assembly hole is provided in the punch rod support seat along the left and right directions, a punch rod is connected to the first assembly hole via a linear bearing, so that the punch rod can slide freely along the axis within a preset range, and the two ends of the linear bearing are limited by limit members, and the limit members are arranged on the punch rod support seat to prevent the linear bearing from escaping from the first assembly hole; the punch rod on the right side of the punch rod support seat is used for cooperation with the power assembly, a limit retaining ring is provided on the punch rod on the left side of the punch rod support seat, and a first spring is sleeved on the punch rod between the linear bearing and the right side of the limit retaining ring, and the two ends of the first spring respectively abut against the limit retaining ring and the linear bearing, and the first spring The spring is in a compressed state, and the first spring is used to pre-press the punch rod on the pin shaft of the surgical instrument clamp head assembly before the riveting operation; an axial tightening sleeve is slidably connected to the punch rod on the left side of the limit stop ring, and the punch rod is provided with a limit column, and the axial tightening sleeve is provided with an oblong hole. Through the cooperation of the oblong hole and the limit column, the axial tightening sleeve can move left and right relative to the punch rod, and a second spring is provided between the left side of the limit stop ring and the axial tightening sleeve, and the two ends of the second spring respectively abut against the left side of the limit stop ring and the axial tightening sleeve, and the second spring is in a compressed state, and the second spring is used to pre-press the axial tightening sleeve on the surgical instrument clamp head assembly before the riveting operation, so that the surgical instrument clamp head assembly does not move.

[0011] In some embodiments, the structure of the power assembly is as follows: it includes a support leg arranged on the base plate, the support leg is provided with a support platform panel, the support platform panel is provided with a cylinder, the push rod of the cylinder is connected to a second connecting plate, the second connecting plate is provided with an impact rod, and the impact rod is coaxially arranged with the punch rod.

[0012] In some embodiments, the structure of the stop assembly is as follows: it includes a stop block arranged on the base plate, a stop claw movably connected to the stop block via a stop pin shaft, the stop claw can rotate around the stop pin shaft within a preset range, and a third spring is provided between the stop block and the stop claw, and the elastic force is utilized to ensure that the stop claw always remains in a normally open state, and the movement of the punch rod assembly on the linear guide rail assembly is limited by the stop claw; an unlocking rod is also connected to the stop claw, and after the riveting operation is completed, the unlocking rod can be moved to release the limiting state of the stop claw on the punch rod assembly.

[0013] In some embodiments, an accommodating hole is provided on the stop fixing plate along the front-to-back direction, a second assembly hole is provided between the right inner wall of the accommodating hole and the right outer wall of the stop fixing plate, a positioning elastic shaft is assembled at the second assembly hole, and the positioning elastic shaft can move along the left-right direction relative to the second assembly hole, a nut is threadedly connected on the positioning elastic shaft in the accommodating hole, and the nut abuts against the right inner wall of the accommodating hole to determine the maximum length of the positioning elastic shaft on the right side of the right outer wall of the stop fixing plate, a fourth spring is sleeved on the positioning elastic shaft on the right side of the right outer wall of the stop fixing plate, a baffle is provided at the right end of the positioning elastic shaft, and two ends of the fourth spring abut against the right outer wall of the stop fixing plate and the baffle respectively, under the action of the fourth spring, the positioning elastic shaft has a tendency to move to the right, and when the riveting operation is completed, the stop assembly is unlocked, and under the action of the fourth spring, the positioning elastic shaft can push the positioning assembly to move to the right, so that the pin shaft of the surgical instrument forceps assembly is away from the stop ejector pin.

[0014] The beneficial effect of the solution of the present application is that the above-mentioned surgical instrument pin riveting device has the advantages of stable and reliable riveting quality, good consistency, adjustable riveting force, reliable clamping and positioning, and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the pin riveting device of the surgical instrument in the embodiment is shown.

[0016] Figure 2 The schematic diagram of the structure of the surgical instrument forceps head assembly in the embodiment is shown, wherein (a) is a schematic diagram of the structure at one angle, and (b) is a schematic diagram of the structure at another angle.

[0017] Figure 3 A schematic structural diagram of a linear guide assembly in an embodiment is shown.

[0018] Figure 4 A schematic structural diagram of a positioning component in an embodiment is shown.

[0019] Figure 5 A schematic structural diagram of the punch assembly in the embodiment is shown.

[0020] Figure 6 A schematic structural diagram of a stop assembly in an embodiment is shown.

[0021] Figure 7 A schematic diagram of the top view of the pin riveting device for a surgical instrument in an embodiment is shown.

[0022] Figure numerals: 1-base plate, 2-stop fixing plate, 3-stop ejector pin, 4-surgical instrument clamp head assembly, 5-punch rod assembly, 6-impact rod, 7-second connecting plate, 8-cylinder, 9-support table panel, 10-leg, 11-stop assembly, 12-positioning assembly, 13-linear guide rail assembly, 14-positioning elastic shaft, 15-fourth spring, 16-rubber foot pad, 401-pin shaft, 402-protrusion, 501-punch rod support seat, 502-punch rod, 503-linear bearing, 504-limiting member, 505-first spring, 506-limiting retaining ring, 507-second spring, 508-axial tightening sleeve, 509-limit column, 5010-long round hole, 1101-stop block, 1102-stop pin, 1103-third spring, 1104-stop claw, 1105-unlocking rod, 1201-first connecting plate, 1202-positioning shaft base, 1203-positioning shaft, 1204-first mounting hole, 1205-second mounting hole, 1206-first avoidance opening, 1207-covered sliding sleeve, 1208-annular mounting space, 1209-third avoidance opening, 12010-plunger, 12011-second avoidance opening, 1301-linear guide rail, 1302-first slider, 1303-second slider. DETAILED DESCRIPTION

[0023] The specific implementation of the present application is further described below in conjunction with the accompanying drawings.

[0024] In the description of the present application, it should be understood that the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0025] like Figures 1 to 7 As shown, the surgical instrument pin riveting device involved in the present application includes a base plate 1, and rubber foot pads 16 can be provided at the four corners of the lower surface of the base plate 1, which can support the device, and a stop fixing plate 2, a linear guide rail assembly 13 and a power assembly are provided on the base plate 1 in sequence from left to right.

[0026] The stop pin 3 is fixedly provided on the stop fixing plate 2, and the stop pin 3 is used to bear the riveting impact force of the pin 401 in the surgical instrument clamp assembly 4. In this embodiment, the stop pin 3 is assembled at the mounting hole of the stop fixing plate 2 with a fixed length, and is fastened by screws to ensure firmness and stability.

[0027] A positioning assembly 12 and a punch assembly 5 are slidably connected in sequence from left to right on the linear guide rail assembly 13, wherein the positioning assembly 12 is used to assemble the surgical instrument clamp assembly 4 so that the surgical instrument clamp assembly 4 is stably and reliably positioned at the positioning assembly 12, and the pin 401 in the surgical instrument clamp assembly 4 is coaxial with the stop pin 3 and the punch rod 502 in the punch assembly 5, and the punch assembly 5 is used to impact the pin 401 in the surgical instrument clamp assembly 4 under the drive of the power assembly, and the pin 401 in the surgical instrument clamp assembly 4 is riveted through the joint action of the punch assembly 5 and the stop pin 3.

[0028] The surgical instrument pin riveting device also includes a stop assembly 11, which is used to limit the punch assembly 5 before the riveting operation so that it cannot move relative to the linear guide assembly 13. At this time, one end of the pin 401 in the surgical instrument forceps assembly 4 is in contact with the stop pin 3, and the other end is pre-tightened by the punch 502 in the punch assembly 5; when the riveting operation is completed, the stop assembly 11 is unlocked so that the punch assembly 5 can move relative to the linear guide assembly 13, so that the surgical instrument forceps assembly 4 can be replaced.

[0029] In this embodiment, the linear guide assembly 13 includes a linear guide 1301 fixed on the base plate 1, and a first slider 1302 and a second slider 1303 are slidably connected to the linear guide 1301, wherein the first slider 1302 is connected to the positioning assembly 12, and the second slider 1303 is connected to the punch assembly 5.

[0030] The structure of the positioning assembly 12 is as follows: it includes a first connecting plate 1201 connected to the first sliding block 1302, a positioning shaft base 1202 is fixedly connected to the first connecting plate 1201, a positioning shaft base 1202 is provided with a positioning shaft 1203, the upper surface of the positioning shaft 1203 is provided with a mounting hole for assembling the surgical instrument forceps assembly 4, and an avoidance opening is opened on the outer side wall of the positioning shaft 1203, each avoidance opening corresponds to each mounting hole one by one, and the corresponding mounting holes are connected to the avoidance opening to avoid each protrusion 402 of the inner hole of the surgical instrument forceps assembly. In this embodiment, two mounting holes are provided on the positioning shaft 1203 at intervals, which are respectively recorded as the first mounting hole 1204 and the second mounting hole 1205. A first avoidance opening 1206 and a second avoidance opening 12011 are provided on the outer wall of the positioning shaft 1203. The first avoidance opening 1206 is communicated with the first mounting hole 1204, and the second avoidance opening 12011 is communicated with the second mounting hole 1205 to avoid the two protrusions 402 of the inner hole of the surgical instrument forceps assembly. A covering sleeve 1207 is also provided on the outer side of the positioning shaft 1203, and the two are locked by screws. An annular mounting space 1208 is formed between the covering sleeve 1207 and the positioning shaft 1203, and the annular mounting space 1208 is used to install the surgical instrument forceps assembly 4. A third avoidance opening 1209 is provided on the covering sleeve 1207 to avoid the punch assembly 5.

[0031] A plunger 12010 is also provided on the covering sleeve 1207, and the plunger 12010 is used to further fix the surgical instrument clamp assembly 4 to prevent the surgical instrument clamp assembly 4 from shaking. Pushing the positioning assembly 12 to move on the linear guide rail 1301 can enable the surgical instrument clamp assembly 4 to approach or move away from the stop pin 3.

[0032] The structure of the punch rod assembly 5 is as follows: it includes a punch rod support seat 501 connected to the second slider 1303, a first assembly hole is provided in the punch rod support seat 501 along the left and right direction, a punch rod 502 is connected to the first assembly hole via a linear bearing 503, so that the punch rod 502 can slide freely along the axis within a preset range, and both ends of the linear bearing 503 are limited by limit members 504, and the limit members 504 are arranged on the punch rod support seat 501 to prevent the linear bearing 503 from escaping from the first assembly hole. The punch rod 502 on the right side of the punch rod support seat 501 is used in conjunction with the power assembly, and a limit ring 506 is provided on the punch rod 502 on the left side of the punch rod support seat 501. A first spring 505 is sleeved on the punch rod 502 between the linear bearing 503 and the right side of the limit ring 506. The two ends of the first spring 505 respectively abut against the limit ring 506 and the linear bearing 503. The first spring 505 is in a compressed state. The first spring 505 is used to pre-press the punch rod 502 on the pin 401 of the surgical instrument clamp assembly before the riveting operation; an axial tightening sleeve 508 is slidably connected to the punch rod 502 on the left side of the limit ring 506, and the punch rod 502 A limiting column 509 is provided on it, and an oblong hole 5010 is provided on the axial tightening sleeve 508. Through the cooperation between the oblong hole 5010 and the limiting column 509, the axial tightening sleeve 508 can move in the left and right directions relative to the punch rod 502. A second spring 507 is provided between the left side of the limiting retaining ring 506 and the axial tightening sleeve 508. The two ends of the second spring 507 respectively abut against the left side of the limiting retaining ring 506 and the axial tightening sleeve 508. The second spring 507 is in a compressed state. The second spring 507 is used to pre-press the axial tightening sleeve 508 on the surgical instrument forceps assembly 4 before the riveting operation, so that the surgical instrument forceps assembly 4 does not move.

[0033] The structure of the power assembly is as follows: it includes a support leg 10 (for example, two) arranged on the bottom plate 1, a support platform panel 9 is arranged on the support leg 10, a cylinder 8 is arranged on the support platform panel 9, a second connecting plate 7 is connected to the push rod of the cylinder 8, an impact rod 6 is arranged on the second connecting plate 7, and the impact rod 6 is coaxially arranged with the punch rod 502. When the cylinder 8 is inhaled, the impact rod 6 is pushed to quickly impact the punch rod 502 to complete the riveting operation; when the cylinder 8 is exhausted, the impact rod 6 is driven to reset.

[0034] The structure of the stop assembly 11 is as follows: it includes a stop block 1101 arranged on the base plate 1, a stop claw 1104 movably connected to the stop block 1101 via a stop pin shaft 1102, the stop claw 1104 can rotate around the stop pin shaft 1102 within a certain range, and a third spring 1103 is provided between the stop block 1101 and the stop claw 1104. Specifically, the two ends of the third spring 1103 respectively abut against the positioning holes of the stop block 1101 and the stop claw 1104, and the elastic force is used to ensure that the stop claw 1104 always remains in a normally open state, and the stop claw 1104 limits the movement of the punch rod assembly 5 on the linear guide rail 1301; an unlocking rod 1105 is also connected to the stop claw 1104. After the riveting operation is completed, the unlocking rod 1105 can be moved to release the limiting state of the stop claw 1104 on the punch rod assembly 5.

[0035] The surgical instrument pin riveting device involved in the present application also includes the following structure, so that after the riveting operation is completed, the positioning assembly 12 is moved to the right, and the pin 401 of the surgical instrument forceps assembly 4 is further moved away from the stop pin 3. Specifically, a receiving hole is provided on the stop fixing plate 2 along the front-to-back direction, and a second assembly hole is provided between the right inner wall of the receiving hole and the right outer wall of the stop fixing plate 2. A positioning elastic shaft 14 is assembled at the second assembly hole, and the positioning elastic shaft 14 can move along the left-right direction relative to the second assembly hole. A nut is threadedly connected to the positioning elastic shaft 14 in the receiving hole, and the nut abuts against the right inner wall of the receiving hole to determine the maximum length of the positioning elastic shaft 14 on the right side of the right outer wall of the stop fixing plate 2. A fourth spring 15 is sleeved on the positioning elastic shaft 14 on the right side of the right outer wall, a baffle is provided at the right end of the positioning elastic shaft 14, two ends of the fourth spring 15 respectively abut against the right outer wall of the stop fixing plate 2 and the baffle, under the action of the fourth spring 15, the positioning elastic shaft 14 has a tendency to move rightward, when the riveting operation is completed, the stop assembly 11 is unlocked, and under the action of the fourth spring 15, the positioning elastic shaft 14 can push the positioning assembly 12 to move rightward, so that the pin 401 of the surgical instrument forceps assembly 4 is away from the stop ejector pin 3.

[0036] During specific use, before the riveting operation, the stop assembly 11 is used to limit the punch assembly 5 so that it cannot move relative to the linear guide assembly 13. At this time, one end of the pin 401 of the surgical instrument clamp assembly 4 is in contact with the stop pin 3, and the other end is pre-tightened by the punch 502 in the punch assembly 5; then the cylinder 8 is filled with air to push the impact rod 6 to quickly impact the punch 502. The punch 502 is driven by the impact rod 6 to impact the pin 401 in the surgical instrument clamp assembly 4. Through the joint action of the punch assembly 5 and the stop pin 3, the pin 401 in the surgical instrument clamp assembly 4 is riveted. After the riveting operation is completed, the cylinder 8 is exhausted to drive the impact rod 6 to reset, unlocking the stop assembly 11, so that the punch assembly 5 can move relative to the linear guide rail assembly 13. Under the action of the fourth spring 15, the positioning spring shaft 14 pushes the positioning assembly 12 to the right, so that the pin 401 of the surgical instrument clamp assembly 4 is away from the stop pin 3. At this time, the surgical instrument clamp assembly 4 can be replaced.

[0037] The surgical instrument pin riveting device involved in the present application has the advantages of stable and reliable riveting quality, good consistency, adjustable riveting force, reliable clamping and positioning, and easy operation.

[0038] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A surgical instrument pin riveting device, characterized in that: The invention comprises a bottom plate, on which a stop fixing plate, a linear guide assembly and a power assembly are arranged in sequence from left to right, a stop ejector is fixed on the stop fixing plate, and the stop ejector is used to bear the riveting impact force of the pin shaft in the surgical instrument clamp head assembly; a positioning assembly and a punch rod assembly are slidably connected in sequence from left to right on the linear guide rail assembly, wherein the positioning assembly is used to assemble the surgical instrument clamp head assembly, and the pin shaft in the surgical instrument clamp head assembly is coaxial with the stop ejector and the punch rod in the punch rod assembly, and the punch rod assembly is used to be driven by the power assembly to impact the The pin shaft in the surgical instrument clamp head assembly is riveted through the joint action of the punch rod assembly and the stop ejector pin; the surgical instrument pin shaft riveting device also includes a stop assembly, which is used to limit the punch rod assembly before the riveting operation so that it cannot move relative to the linear guide rail assembly. At this time, one end of the pin shaft in the surgical instrument clamp head assembly is in contact with the stop ejector pin, and the other end is pre-tightened by the punch rod in the punch rod assembly; when the riveting operation is completed, the stop assembly is unlocked so that the punch rod assembly can move relative to the linear guide rail assembly so that the surgical instrument clamp head assembly can be replaced.

2. The surgical instrument pin riveting device according to claim 1, characterized in that: The linear guide assembly includes a linear guide fixed on the base plate, and a first slider and a second slider are slidably connected to the linear guide, wherein the first slider is connected to the positioning assembly, and the second slider is connected to the punch assembly.

3. The surgical instrument pin riveting device according to claim 2, characterized in that: The structure of the positioning assembly is as follows: it includes a first connecting plate connected to the first sliding block, a positioning shaft base is fixedly connected to the first connecting plate, a positioning shaft is provided on the positioning shaft base, a mounting hole for assembling the surgical instrument clamp assembly is provided on the upper surface of the positioning shaft, and an avoidance opening is provided on the outer side wall of the positioning shaft, each avoidance opening corresponds to each mounting hole one by one, and the corresponding mounting holes are connected to the avoidance opening to avoid each protrusion of the inner hole of the surgical instrument clamp assembly; a covering sleeve is also sleeved on the outer side of the positioning shaft, and the two are locked by screws, and an annular installation space is formed between the covering sleeve and the positioning shaft, and the annular installation space is used to install the surgical instrument clamp assembly, and an avoidance opening is provided on the covering sleeve to avoid the punch rod assembly.

4. The surgical instrument pin riveting device according to claim 3, characterized in that: Two mounting holes are spaced apart on the positioning shaft, which are respectively referred to as a first mounting hole and a second mounting hole. A first avoidance opening and a second avoidance opening are opened on the outer side wall of the positioning shaft. The first avoidance opening is connected to the first mounting hole, and the second avoidance opening is connected to the second mounting hole, so as to avoid two protrusions in the inner hole of the surgical instrument forceps assembly.

5. The surgical instrument pin riveting device according to claim 3 or 4, characterized in that: A plunger is also provided on the covering sliding sleeve, and the plunger is used to further fix the surgical instrument forceps head assembly.

6. The surgical instrument pin riveting device according to claim 2, characterized in that: The structure of the punch rod assembly is as follows: it includes a punch rod support seat connected to the second sliding block, a first assembly hole is provided in the punch rod support seat along the left and right directions, a punch rod is connected to the first assembly hole via a linear bearing, so that the punch rod can slide freely along the axis within a preset range, and the two ends of the linear bearing are limited by limit members, and the limit members are arranged on the punch rod support seat to prevent the linear bearing from escaping from the first assembly hole; the punch rod on the right side of the punch rod support seat is used for use with the power assembly, and a limit retaining ring is provided on the punch rod on the left side of the punch rod support seat, and a first spring is sleeved on the punch rod between the linear bearing and the right side of the limit retaining ring, and the two ends of the first spring respectively abut against the limit retaining ring and the linear bearing, and the first spring is in a compression The cam is in a compressed state, and the first spring is used to pre-press the punch rod on the pin shaft of the surgical instrument clamp head assembly before the riveting operation; an axial tightening sleeve is slidably connected to the punch rod on the left side of the limit retaining ring, and the punch rod is provided with a limit column, and the axial tightening sleeve is provided with an oblong hole, through the cooperation of the oblong hole and the limit column, the axial tightening sleeve can move in the left and right directions relative to the punch rod, and a second spring is provided between the left side of the limit retaining ring and the axial tightening sleeve, and the two ends of the second spring respectively abut against the left side of the limit retaining ring and the axial tightening sleeve, and the second spring is in a compressed state, and the second spring is used to pre-press the axial tightening sleeve on the surgical instrument clamp head assembly before the riveting operation, so that the surgical instrument clamp head assembly does not move.

7. The surgical instrument pin riveting device according to claim 1, characterized in that: The structure of the power assembly is as follows: it includes a support leg arranged on the base plate, a support platform panel is provided on the support leg, a cylinder is provided on the support platform panel, a second connecting plate is connected to the push rod of the cylinder, an impact rod is provided on the second connecting plate, and the impact rod is coaxially arranged with the punch rod.

8. The surgical instrument pin riveting device according to claim 1, characterized in that: The structure of the stop assembly is as follows: it includes a stop block arranged on the base plate, a stop claw movably connected to the stop block via a stop pin shaft, the stop claw can rotate around the stop pin shaft within a preset range, a third spring is provided between the stop block and the stop claw, and the elastic force is utilized to ensure that the stop claw always remains in a normally open state, and the movement of the punch rod assembly on the linear guide rail assembly is limited by the stop claw; an unlocking rod is also connected to the stop claw, and after the riveting operation is completed, the unlocking rod can be moved to release the limiting state of the stop claw on the punch rod assembly.

9. The surgical instrument pin riveting device according to claim 1, characterized in that: The stop fixing plate is provided with an accommodating hole along the front-to-back direction, and a second assembly hole is provided between the right inner wall of the accommodating hole and the right outer wall of the stop fixing plate, and a positioning elastic shaft is assembled at the second assembly hole, and the positioning elastic shaft can move along the left and right directions relative to the second assembly hole, and a nut is threadedly connected on the positioning elastic shaft in the accommodating hole, and the nut abuts against the right inner wall of the accommodating hole, so that the maximum length of the positioning elastic shaft on the right side of the right outer wall of the stop fixing plate can be determined, and a fourth spring is sleeved on the positioning elastic shaft on the right side of the right outer wall of the stop fixing plate, and a baffle is provided at the right end of the positioning elastic shaft, and two ends of the fourth spring respectively abut against the right outer wall of the stop fixing plate and the baffle. Under the action of the fourth spring, the positioning elastic shaft has a tendency to move rightward. When the riveting operation is completed, the stop assembly is unlocked, and under the action of the fourth spring, the positioning elastic shaft can push the positioning assembly to move rightward, so that the pin shaft of the surgical instrument clamp head assembly is away from the stop ejector pin.

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