Kirschner wire clamping mechanism and surgical device

Abstract

The utility model discloses a kirschner wire clamping mechanism and a surgical device, and relates to the technical field of medical instruments, and the kirschner wire clamping mechanism comprises a cylinder body, which is provided with a mounting cavity, and the mounting cavity is provided with a fixing port and a bottom wall opposite to the fixing port; the chuck assembly is arranged in the mounting cavity in a sliding manner, and the chuck assembly is used for mounting a kirschner wire; one end of the telescopic assembly abuts against the bottom wall, and the other end of the telescopic assembly stretches out and draws back towards one side of the chuck assembly; the clamping assembly is connected with the cylinder body, the clamping assembly is in driving connection with the telescopic assembly to drive the telescopic assembly to move towards one side of the fixing opening, and then the chuck assembly is driven to be matched with the periphery of the fixing opening to clamp the kirschner wire; according to the technical scheme provided by the utility model, the adaptability of the kirschner wire clamping device to kirschner wires with different specifications is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a Kirschner wire clamping mechanism and a surgical device. Background Art

[0002] Kirschner wire is a commonly used internal fixation material in orthopedics. It is used to fix fractures with little stress, such as short fractures or avulsion fractures. It is also used to fix temporary fracture fragments in orthopedic surgery.

[0003] Currently, during Kirschner wire surgery, a chuck mechanism such as a hand drill is required to fix the Kirschner wire to perform the surgery. Since Kirschner wires come in many sizes, different chuck mechanisms are required to clamp Kirschner wires of different sizes, which makes the surgery complicated, reduces the efficiency of the surgery, and affects the safety of the surgery. Utility Model Content

[0004] The main purpose of the utility model is to provide a Kirschner wire clamping mechanism and a surgical device, aiming to improve the adaptability of the Kirschner wire clamping device to Kirschner wires of different specifications.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a Kirschner wire clamping mechanism, comprising:

[0006] The cylinder body has an installation cavity, wherein the installation cavity has a fixing opening and a bottom wall opposite to the fixing opening;

[0007] A chuck assembly is slidably disposed in the mounting cavity, and the chuck assembly is used to mount a Kirschner wire;

[0008] A telescopic component is slidably disposed in the mounting cavity, one end of the telescopic component abuts against the bottom wall and the other end thereof telescopes toward one side of the clamping head component;

[0009] The clamping assembly is connected to the cylinder, and the clamping assembly is drivingly connected to the telescopic assembly to drive the telescopic assembly to move toward one side of the fixed port, thereby driving the chuck assembly to cooperate with the periphery of the fixed port to clamp the Kirschner wire.

[0010] In one embodiment, the telescopic assembly comprises:

[0011] an actuating member, slidably matched with the mounting cavity, the actuating member abutting against the bottom wall;

[0012] The follower is threadedly connected with the actuating member so as to move relative to the actuating member along the axial direction of the mounting cavity, and one end of the follower away from the actuating member abuts against the clamp assembly.

[0013] In one embodiment, the telescopic assembly further comprises an adjusting member, which is disposed on the cylinder and drivingly connected to the driven member, and one end of the adjusting member protrudes from the outer wall of the cylinder for gripping.

[0014] In one embodiment, the outer periphery of the driven member is provided with external teeth, and the external teeth extend along the axial direction of the driven member, and the adjusting member includes:

[0015] A transmission gear is rotatably disposed on the outer peripheral wall of the cylinder, and the transmission gear is meshed with the outer teeth;

[0016] An adjusting ring is rotatably sleeved on the outside of the cylinder, and the adjusting ring is meshed with the transmission gear.

[0017] In one embodiment, a first retaining ring is protruded from the outside of the cylinder, and a second retaining ring is sleeved on the outside of the cylinder. The second retaining ring and the first retaining ring are spaced apart to form an installation space, and the adjustment ring is rotatably arranged in the installation space.

[0018] In one embodiment, the second retaining ring is threadedly connected to the cylinder; and / or, a mating position is provided on the outer peripheral wall of the second retaining ring, and the mating position is used to cooperate with a wrench.

[0019] In one embodiment, an anti-slip groove is formed in an outer peripheral wall of the adjustment ring; and / or, a plurality of transmission gears are provided, and the plurality of transmission gears are arranged at equal intervals around the driven member.

[0020] In one embodiment, the K-wire clamping mechanism further includes a pre-tightening assembly, which is disposed at the fixing port, and the pre-tightening assembly elastically abuts against the chuck assembly to drive the chuck assembly to clamp the K-wire.

[0021] In one embodiment, the preload assembly comprises:

[0022] A clamping member is slidably disposed in the installation cavity and is disposed adjacent to the fixing opening;

[0023] An elastic member elastically connects the cylinder and the clamping member so that the clamping member elastically abuts against the clamping head assembly.

[0024] The utility model also provides a surgical device, comprising the above-mentioned Kirschner wire clamping mechanism.

[0025] Compared with the prior art, in the technical solution of the utility model, the Kirschner wire clamping mechanism includes a cylinder, a mounting cavity extending axially along the cylinder is provided in the cylinder, a fixing port connected to the mounting cavity is provided at one end of the cylinder, and a bottom wall opposite to the fixing port is provided in the mounting cavity; in addition, the Kirschner wire clamping mechanism also includes a chuck assembly, which is slidably arranged in the mounting cavity, so that the size of the Kirschner wire mounted by the chuck assembly can be adjusted; the Kirschner wire clamping mechanism also includes a telescopic assembly, which is slidably arranged in the mounting cavity, one end of the telescopic assembly abuts on the bottom wall, and the other end telescopes toward one side of the chuck assembly and elastically abuts against the chuck assembly, so that by adjusting the telescopic assembly to be extended, the sliding stroke of the chuck assembly can be adjusted, and thus Kirschner wires of different sizes can be adapted; in addition, the Kirschner wire clamping mechanism also includes a clamping assembly, which is connected to the cylinder, and the clamping assembly is drivingly connected to the telescopic assembly to drive the telescopic assembly to clamp the Kirschner wire. In the above technical solution, the position of the chuck assembly to the fixed port can be adjusted by adjusting the telescopic assembly, and Kirschner wires of different specifications can be installed on the chuck assembly. After that, the telescopic assembly elastically abuts against the chuck assembly to clamp the Kirschner wire, thereby realizing rapid clamping of Kirschner wires of different specifications and improving the efficiency of needle installation. In addition, after the Kirschner wire is installed in the chuck assembly, it can remain clamped and fixed under the action of the telescopic assembly, thereby preventing the Kirschner wire from accidentally falling when taking or transferring equipment with the Kirschner wire clamping mechanism, thereby improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of a Kirschner wire clamping mechanism provided by the utility model;

[0028] Figure 2 A schematic cross-sectional view of an embodiment of a Kirschner wire clamping mechanism provided by the utility model;

[0029] Figure 3 It is a structural schematic diagram of the telescopic component in the Kirschner wire clamping mechanism provided by the utility model.

[0030] Description of Figure Numbers:

[0031] 100, cylinder; 110, installation cavity; 120, fixing port; 130, first retaining ring;

[0032] 200, chuck assembly;

[0033] 300, telescopic assembly; 310, actuator; 320, follower; 330, adjustment member; 331, transmission gear; 332, adjustment ring; 330, anti-slip groove

[0034] 400, clamping assembly;

[0035] 500, second retaining ring; 510, matching position;

[0036] 600, pre-tightening assembly; 610, clamping member; 620, elastic member.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0041] Kirschner wire is a commonly used internal fixation material in orthopedics. It is used to fix fractures with little stress, such as short fractures or avulsion fractures. It is also used to fix temporary fracture fragments in orthopedic surgery.

[0042] Currently, during Kirschner wire surgery, a chuck mechanism such as a hand drill is required to fix the Kirschner wire to perform the surgery. Since Kirschner wires come in many sizes, different chuck mechanisms are required to clamp Kirschner wires of different sizes, which makes the surgery complicated, reduces the efficiency of the surgery, and affects the safety of the surgery.

[0043] To this end, the utility model proposes a Kirschner wire clamping mechanism, comprising:

[0044] The cylinder 100 has a mounting cavity 110, and the mounting cavity 110 has a fixing opening 120 and a bottom wall opposite to the fixing opening 120;

[0045] A chuck assembly 200 is slidably disposed in the mounting cavity 110, and the chuck assembly 200 is used to mount a Kirschner wire;

[0046] The telescopic assembly 300 is slidably disposed in the mounting cavity 110, with one end of the telescopic assembly 300 abutting against the bottom wall and the other end telescoping toward one side of the clamp assembly 200;

[0047] The clamping assembly 400 is connected to the barrel 100 and is drivingly connected to the telescopic assembly 300 to drive the telescopic assembly 300 to move toward the fixed port 120, thereby driving the chuck assembly 200 to cooperate with the periphery of the fixed port 120 to clamp the Kirschner wire.

[0048] Compared with the prior art, in the technical solution of the utility model, the Kirschner wire clamping mechanism includes a barrel 100, a mounting cavity 110 extending axially along the barrel 100 is provided in the barrel 100, a fixing port 120 communicating with the mounting cavity 110 is provided at one end of the barrel 100, and the mounting cavity 110 also has a bottom wall opposite to the fixing port 120; in addition, the Kirschner wire clamping mechanism also includes a chuck assembly 200, which is slidably arranged in the mounting cavity 110, so that the size of the Kirschner wire installed by the chuck assembly 200 can be adjusted; the Kirschner wire clamping mechanism also includes a telescopic assembly 3 00, the telescopic component 300 is slidably arranged in the installation cavity 110. One end of the telescopic component 300 abuts on the bottom wall, and the other end telescopes toward one side of the chuck component 200 and elastically abuts against the chuck component 200. In this way, by adjusting the telescopic component 300 to be telescopic, the sliding stroke of the chuck component 200 can be adjusted, so that Kirschner wires of different sizes can be adapted; in addition, the Kirschner wire clamping mechanism also includes a clamping component 400, which is connected to the cylinder 100, and the clamping component 400 is drivingly connected to the telescopic component 300 to drive the telescopic component 300 to clamp the Kirschner wire. In the above technical solution, the position of the chuck assembly 200 to the fixing port 120 can be adjusted by adjusting the telescopic assembly 300, and Kirschner wires of different specifications can be installed in the chuck assembly 200. After that, the telescopic assembly 300 elastically abuts against the chuck assembly 200 to clamp the Kirschner wires, thereby realizing rapid clamping of Kirschner wires of different specifications and improving the efficiency of needle installation. In addition, after the Kirschner wire is installed in the chuck assembly 200, it can remain clamped and fixed under the action of the telescopic assembly 300, thereby preventing the Kirschner wire from accidentally falling when taking or transferring equipment with the Kirschner wire clamping mechanism, thereby improving the safety of the operation.

[0049] Specifically, Figures 1 to 3In this embodiment, the Kirschner wire clamping mechanism can be applied to Kirschner wire surgical equipment such as hand drills. The Kirschner wire clamping mechanism includes a barrel 100, which is a cylindrical structure. The barrel 100 has an installation cavity 110 extending along its own axial direction. One end of the barrel 100 also has a fixing port 120 connected to the installation cavity 110. The fixing port 120 can be provided with a conical surface facing the installation cavity 110. A chuck assembly 200 is provided in the installation cavity 110. The chuck assembly 200 can adopt a conventional elastic chuck assembly 200 structure on the market. The chuck assembly 200 can be a chuck finger arranged on a chuck seat, and the chuck finger can be a chuck finger. At least two fingers can be provided, and each chuck finger can be distributed on the chuck seat in a conical shape with a small front and a large rear side in a longitudinal reciprocating sliding manner. The front ends of the multiple chuck fingers together form a clamping space, and the Kirschner wire can be inserted into the clamping space for installation. The chuck fingers can slide close to the fixing port 120 and abut against the conical surface. At this time, the aperture of the clamping space is reduced until the chuck fingers clamp and fix the Kirschner wire. In addition, the chuck assembly 200 can slide axially as a whole, so that the distance between the chuck fingers and the fixing port 120 changes, and then when the chuck fingers slide along their own axial direction until they abut against the peripheral edge of the fixing port 120, the clamping space of the front end of the chuck fingers changes, that is, through By sliding the chuck assembly 200 close to or away from the fixing opening 120, the clamping space can be adjusted to adapt to Kirschner wires of different sizes; in addition, the Kirschner wire clamping mechanism also includes a telescopic assembly 300, which is arranged in the installation cavity 110, and the installation cavity 110 has a bottom wall opposite to the fixing opening 120, and the telescopic assembly 300 can slide along the axial direction of the installation cavity 110, and one end of the telescopic assembly 300 can abut on the bottom wall, and the other end can be telescoped toward one side of the chuck assembly 200 and abut on the chuck assembly 200; in this embodiment, the Kirschner wire clamping mechanism also includes a clamping assembly 400, and the clamping assembly 400 The clamping assembly 400 is hinged to the barrel 100 and can rotate relative to the barrel 100. In addition, one end of the clamping assembly 400 extends away from the barrel 100 so that a person can hold this part, and the other end of the clamping assembly 400 extends toward the telescopic assembly 300 and is drivingly connected to the telescopic assembly 300. When the handle is held, the other end of the clamping assembly 400 can drive the telescopic assembly 300 to move close to the fixed port 120 to achieve secondary clamping of the Kirschner wire, which can further improve the stability of the Kirschner wire clamping; and when the handle is released, the clamping assembly 400 removes the force on the telescopic assembly 300, and the telescopic assembly 300 can be operated to load and unload the Kirschner wire.During the clamping process, the telescopic component 300 can be operated to extend and retract toward one side of the chuck component 200, so that the chuck component 200 can be pushed to move closer to or away from the installation port, so as to adjust the clamping space, and then clamp the Kirschner wires of different sizes, and then perform secondary clamping and fixing through the clamping component 400; in this scheme, the Kirschner wires of different specifications can be clamped only by operating the telescopic component 300 to extend and retract to drive the movement of the chuck component 200, which improves the versatility of the Kirschner wire clamping mechanism, facilitates the surgical procedure, and improves the surgical efficiency, and the secondary clamping of the Kirschner wire by the clamping component 400 also ensures the stability of the Kirschner wire clamping, and in the process of taking, transferring and using the Kirschner wire clamping mechanism, the telescopic component 300 can make the chuck component 200 always clamp the Kirschner wire, prevent the Kirschner wire from accidentally falling, and improve the safety of the operation.

[0050] like Figures 1 to 3 In one embodiment of the present utility model, the telescopic assembly 300 includes:

[0051] The actuating member 310 is slidably matched with the mounting cavity 110, and the actuating member 310 abuts against the bottom wall;

[0052] The follower 320 is threadedly connected to the actuating member 310 to move relative to the actuating member 310 along the axial direction of the mounting cavity 110 , and one end of the follower 320 away from the actuating member 310 abuts against the chuck assembly 200 .

[0053] Among them, the actuator 310 is a cylindrical structure, the actuator 310 is slidably set in the installation cavity 110, the actuator 310 abuts against the bottom wall, and the outer peripheral wall of the actuator 310 is provided with an external thread; the follower 320 is a sleeve structure, the follower 320 is rotatably sleeved on the actuator 310, and the inner wall of the follower 320 is provided with an internal thread, and the internal thread of the follower 320 cooperates with the external thread of the actuator 310. By rotating the follower 320, the overall length of the actuator 310 and the follower 320 after cooperation can be adjusted, and the end of the follower 320 away from the actuator 310 abuts against the chuck assembly 200, and then the distance between the chuck assembly 200 and the fixing port 120 can be adjusted to achieve adaptation to Kirschner wires of different sizes.

[0054] like Figures 1 to 3In one embodiment of the utility model, the telescopic assembly 300 further includes an adjusting member 330, which is disposed on the cylinder 100 and is drivingly connected to the driven member 320, and one end of the adjusting member 330 protrudes from the outer wall of the cylinder 100 for gripping. The adjusting member can be a sleeve structure that is rotatably sleeved on the outside of the cylinder 100, and the adjusting member can be connected to the internal driven member 320 through a connecting rod or other structure. A person can hold and rotate the adjusting member, and the driven member 320 can be driven to rotate relative to the actuator 310, thereby realizing the telescopic movement of the telescopic assembly 300; in this solution, the adjustment member can be provided to facilitate the adjustment of the telescopic assembly 300 by a person, thereby improving the convenience of the operation of the Kirschner wire clamping mechanism.

[0055] like Figure 2 and Figure 3 In the technical solution of the utility model, the outer periphery of the driven member 320 is provided with external teeth, and the external teeth extend along the axial direction of the driven member 320. The adjusting member 330 includes:

[0056] The transmission gear 331 is rotatably disposed on the outer peripheral wall of the cylinder 100, and the transmission gear 331 is meshed with the external teeth;

[0057] The adjusting ring 332 is rotatably sleeved on the outside of the cylinder 100 , and the adjusting ring 332 is meshed with the transmission gear 331 .

[0058] Among them, the outer periphery of the driven member 320 can be provided with external teeth, and the external teeth extend along the axial direction of the driven member 320. The adjusting member 330 includes a transmission gear 331, and the transmission gear 331 is rotatably arranged on the outer peripheral wall of the cylinder 100. The transmission gear 331 can mesh with the external teeth on the driven member 320. In addition, the transmission gear 331 also protrudes from the outer peripheral wall of the cylinder 100. The adjusting member also includes an adjusting ring 332, and the adjusting ring 332 is a sleeve structure. The adjusting ring 332 is rotatably connected to the cylinder 100. The inner wall of the adjusting ring 332 is provided with internal teeth, and the internal teeth mesh with the transmission gear 331. In this way, By rotating the adjustment ring, the transmission gear 331 can be driven to rotate, and then the driven member 320 can be driven to rotate through the transmission gear 331 to achieve the telescopic adjustment of the telescopic assembly 300; in this solution, the adjustment ring 332, the transmission gear 331 and the driven member 320 together constitute a planetary gear set, and the transmission from the adjustment ring to the driven member 320 is a speed-increasing transmission, that is, the driven member 320 can rotate at a greater angle relative to the adjustment ring 332, which can increase the speed of telescopic assembly 300 and transmission efficiency, thereby shortening the adjustment time of the Kirschner wire clamping mechanism, shortening the time for surgical needle installation, and reducing surgical risks.

[0059] In an embodiment of the utility model, a plurality of transmission gears 331 are provided, and the plurality of transmission gears 331 are arranged at equal intervals around the driven member 320. Two or more transmission gears 331 can be provided. By providing a plurality of transmission gears 331, the driven member 320 can be subjected to a more balanced force when driven by the transmission gears 331, thereby ensuring the stability of the rotation of the driven member 320 and reducing the possibility of the driven member 320 getting stuck. In addition, the plurality of transmission gears 331 can disperse the force of the driven member 320, reduce the concentration of local force, and improve the reliability of the telescopic assembly 300.

[0060] like Figure 2 In one embodiment of the utility model, a first retaining ring 130 is protruded from the outside of the cylinder 100, and a second retaining ring 500 is sleeved on the outside of the cylinder 100. The second retaining ring 500 and the first retaining ring 130 are spaced apart to form an installation space, and the adjustment ring 332 is rotatably arranged in the installation space. The first retaining ring 130 can be integrally formed with the cylinder 100, and the second retaining ring 500 can be connected to the cylinder 100 by means of a clamping connection, etc., so that the adjustment ring 332 can be limited in the installation space formed between the first retaining ring 130 and the second retaining ring 500, thereby preventing the adjustment ring 332 from moving in the axial direction of the cylinder 100, and ensuring the reliability of the telescopic assembly 300.

[0061] In one embodiment of the utility model, the second retaining ring 500 is threadedly connected to the cylinder 100, and an external thread matching the second retaining ring 500 can be provided on the outer peripheral wall of the cylinder 100. The threaded connection facilitates the fixation of the second retaining ring 500 and the disassembly and assembly of the telescopic assembly 300, thereby improving the processability of the Kirschner wire clamping mechanism.

[0062] like Figure 1 In one embodiment of the utility model, the outer wall of the second retaining ring 500 is provided with a matching position 510, and the matching position 510 is used to match with a spanner. The matching position 510 can be a groove structure set on the outer wall of the second retaining ring 500, and the shape and size of the groove can be adapted to the spanner. When disassembling and assembling the second retaining ring 500, the spanner can be used for operation, which saves manpower and facilitates the assembly of the Kirschner wire clamping mechanism.

[0063] like Figure 3 In one embodiment of the utility model, an anti-skid groove 333 is concavely formed on the outer peripheral wall of the adjustment ring 332. The anti-skid groove 333 can extend along the axial direction of the adjustment ring 332, and a plurality of anti-skid grooves 333 can be provided, and the plurality of anti-skid grooves 333 can be arranged in a circular array around the center of the adjustment ring 332, so that the friction force when a person holds the adjustment ring 332 can be increased, and the adjustment of the Kirschner wire clamping mechanism can be facilitated.

[0064] like Figure 2In one embodiment of the utility model, the Kirschner wire clamping mechanism also includes a pre-tightening component, which is arranged at the fixing port, and the pre-tightening component elastically abuts against the chuck component to drive the chuck component to clamp the Kirschner wire. In order to prevent the Kirschner wire from falling during the clamping process, the Kirschner wire clamping mechanism also includes a pre-tightening assembly, which is arranged at the fixing port, and the pre-tightening assembly is elastically abutted against the chuck assembly. When the Kirschner wire is installed, the telescopic assembly can first retract away from one side of the fixing port, and at this time the chuck assembly can move away from the fixing port, and then the Kirschner wire is loaded into the chuck assembly, the telescopic assembly is adjusted to extend toward one side of the chuck assembly and push the chuck assembly to move toward one side of the fixing port until the chuck assembly abuts against the pre-tightening assembly. At this time, the pre-tightening assembly and the telescopic assembly can cooperate to clamp the chuck assembly so that the chuck fingers on the chuck assembly clamp the Kirschner wire. In this state, regardless of whether the clamping assembly is operated or not, the chuck assembly can always give the Kirschner wire a certain clamping force, thereby realizing pre-clamping of the Kirschner wire and preventing the Kirschner wire from falling during the process of taking, placing or transferring the equipment provided with the Kirschner wire clamping mechanism, thereby improving the safety of the operation.

[0065] like Figure 2 In one embodiment of the utility model, the preload assembly includes:

[0066] A clamping member is slidably disposed in the installation cavity and is disposed adjacent to the fixing opening;

[0067] The elastic member elastically connects the cylinder and the clamping member so that the clamping member elastically abuts against the clamping head assembly.

[0068] The clamping member slides along the axial direction of the installation cavity, and a through hole coaxial with the fixing port is provided on the clamping member, through which the Kirschner wire can be inserted into the chuck assembly, and a conical surface is provided on the side of the clamping member facing the chuck assembly, and the chuck assembly can abut against the conical surface under the drive of the telescopic assembly, at which time the chuck finger can clamp the Kirschner wire under the action of the conical surface. In addition, the preload assembly also includes an elastic member, which can be a disc spring, and the elastic member is arranged in the area between the clamping member and the fixing port, and one end of the elastic member abuts against the periphery of the fixing port, and the other end abuts against The clamping member is connected so that the clamping member and the chuck assembly are in close contact. During the extension and retraction process of the telescopic assembly, the clamping member can always cooperate with the telescopic assembly to clamp the chuck assembly, so that the chuck assembly can maintain a stable position, thereby improving the reliability of pre-clamping; in addition, when operating the clamping assembly, the clamping assembly can drive the chuck assembly to move toward the fixed port side for a second time. At this time, the elastic member is compressed for the second time, so that the Kirschner wire is subjected to a greater clamping force. In this process, the setting of the elastic member enables the clamping assembly to have a certain active stroke, which can improve the feel of the clamping assembly operation.

[0069] The utility model also proposes a surgical device, which includes a main body and a Kirschner wire clamping mechanism arranged on the main body. The specific structure of the Kirschner wire clamping mechanism refers to the above-mentioned embodiment. Since the surgical device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0070] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A Kirschner wire clamping mechanism, characterized in that: include: The cylinder body has an installation cavity, wherein the installation cavity has a fixing opening and a bottom wall opposite to the fixing opening; A chuck assembly is slidably disposed in the mounting cavity, and the chuck assembly is used to mount a Kirschner wire; A telescopic component is slidably disposed in the mounting cavity, one end of the telescopic component abuts against the bottom wall and the other end thereof telescopes toward one side of the clamping head component; The clamping assembly is connected to the cylinder, and the clamping assembly is drivingly connected to the telescopic assembly to drive the telescopic assembly to move toward one side of the fixed port, thereby driving the chuck assembly to cooperate with the periphery of the fixed port to clamp the Kirschner wire.

2. The Kirschner wire clamping mechanism according to claim 1, characterized in that: The telescopic assembly comprises: an actuating member, slidably matched with the mounting cavity, the actuating member abutting against the bottom wall; The follower is threadedly connected with the actuating member so as to move relative to the actuating member along the axial direction of the mounting cavity, and one end of the follower away from the actuating member abuts against the clamp assembly.

3. The Kirschner wire clamping mechanism according to claim 2, characterized in that: The telescopic assembly also includes an adjusting member, which is arranged on the cylinder and drivingly connected to the driven member. One end of the adjusting member protrudes from the outer wall of the cylinder for gripping.

4. The Kirschner wire clamping mechanism according to claim 3, characterized in that: The outer periphery of the driven member is provided with external teeth, and the external teeth extend along the axial direction of the driven member. The adjusting member comprises: A transmission gear is rotatably disposed on the outer peripheral wall of the cylinder, and the transmission gear is meshed with the external teeth; An adjusting ring is rotatably sleeved on the outside of the cylinder, and the adjusting ring is meshed with the transmission gear.

5. The Kirschner wire clamping mechanism according to claim 4, characterized in that: A first retaining ring is protruding from the outside of the cylinder, and a second retaining ring is sleeved on the outside of the cylinder. The second retaining ring and the first retaining ring are spaced apart to form an installation space, and the adjustment ring is rotatably arranged in the installation space.

6. The Kirschner wire clamping mechanism according to claim 5, characterized in that: The second retaining ring is threadedly connected to the cylinder; and / or, a matching position is provided on the outer peripheral wall of the second retaining ring, and the matching position is used to match with a wrench.

7. The Kirschner wire clamping mechanism according to claim 4, characterized in that: The outer peripheral wall of the adjustment ring is provided with an anti-slip groove; and / or, the transmission gear is provided in plurality, and the plurality of transmission gears are arranged around the driven member at equal intervals.

8. The Kirschner wire clamping mechanism according to claim 1, characterized in that: The K-wire clamping mechanism further comprises a pre-tightening assembly, which is arranged at the fixing port and elastically abuts against the chuck assembly to drive the chuck assembly to clamp the K-wire.

9. The Kirschner wire clamping mechanism according to claim 8, characterized in that: The preload assembly comprises: A clamping member is slidably disposed in the installation cavity and is disposed adjacent to the fixing opening; An elastic member elastically connects the cylinder and the clamping member so that the clamping member elastically abuts against the clamping head assembly.

10. A surgical device, characterized in that: A Kirschner wire clamping mechanism comprising any one of claims 1 to 9.

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