Kirschner wire clamping device

Abstract

The present invention proposes a Kirschner wire clamping device, comprising a clamping body; a clamping cavity is provided in the clamping body along the axial direction; an elastic guide member is fixed to the clamping end of the clamping body; a guide cavity connected to the clamping cavity is provided on the guide member; and the diameter of the guide cavity is smaller than the diameter of the clamping cavity. The present invention solves the problem that small Kirschner wires cannot be clamped in the industry by providing a guide member that can produce elastic deformation. At the same time, the clamping range is expanded, and the clamping device can be applied to different Kirschner wires during use without replacing the clamping device. The clamping section of the present invention is set as a plane, which expands the contact area with the Kirschner wire and improves the clamping force.

Description

Technical Field

[0001] The invention belongs to the field of medical device manufacturing, and particularly relates to a Kirschner wire clamping device. Background Art

[0002] In orthopedics and surgery, medical workers often use Kirschner wires to fix the fracture ends when treating patients with fractures. The length of Kirschner wires is generally about 20 centimeters, and they are mainly used to fix fractures with little stress, such as avulsion fractures or short fractures.

[0003] However, the existing Kirschner wire clamping device cannot achieve fixed clamping of small Kirschner wires, and has low clamping force and poor applicability. Summary of the invention

[0004] The purpose of the present invention is to provide a Kirschner wire clamping device, which has a large clamping range and can clamp and fix small Kirschner wires. To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A Kirschner wire clamping device comprises a clamping body; the clamping body is provided with a clamping cavity along the axial direction; the clamping section of the clamping body is a plane; an elastic guide member is fixed to the clamping end of the clamping body; a guide cavity connected to the clamping cavity is provided in the guide member; and the diameter of the guide cavity is smaller than the diameter of the clamping cavity.

[0006] Preferably, the guide cavity is truncated cone-shaped; the guide cavity comprises a guide end, a cavity body and a connection end which are connected in sequence; and an adjustment groove is radially provided on the cavity body.

[0007] Preferably, the cross-sectional diameter of the connecting end is 0.8 mm to 1.2 mm; and the width of the adjusting groove is 0.1 mm to 0.3 mm.

[0008] Preferably, the connecting end is a small end.

[0009] Preferably, the guide cavity and the clamping cavity are cocentrically arranged.

[0010] Preferably, the adjustment grooves are symmetrically arranged.

[0011] Preferably, the clamping body comprises an outer shell, an outer conical sleeve, an inner cavity and at least one pair of clamping wheels;

[0012] The inner cavity is fixed in the outer shell and defines the clamping cavity;

[0013] The outer conical sleeve is sleeved on the inner cavity and moves along the axial direction of the inner cavity;

[0014] The outer conical sleeve is provided with a mounting groove along the circumferential direction; the mounting groove is connected to the clamping cavity;

[0015] The clamping wheel is embedded in the installation groove and contacts the inner wall of the outer conical sleeve; the clamping wheel extends into the clamping cavity; the portion of the clamping wheel extending into the clamping cavity is the clamping section.

[0016] Preferably, it further comprises a power rod; the power rod is arranged on the housing through a rotating shaft; one end of the power rod extends into the housing and is fixed on the outer conical sleeve.

[0017] Preferably, the number of the clamping wheels is 4 and they are symmetrically distributed.

[0018] Preferably, the minimum diameter of the clamping gap formed by the clamping wheel is 2.5 mm.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1) By providing a guide component that can generate elastic deformation, the problem that small Kirschner wires cannot be clamped in the industry is solved, and at the same time the clamping range is expanded. The clamping device can be applied to different Kirschner wires during use without replacing the clamping device.

[0021] 2) The clamping section is set as a plane, which expands the contact area with the Kirschner wire and improves the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An assembly diagram of a Kirschner wire clamping device according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A partial schematic diagram of the clamping body;

[0024] Figure 3 for Figure 2 Left view of;

[0025] Figure 4 for Figure 1 Structural diagram of the middle guide member;

[0026] Figure 5 for Figure 1 Structural diagram of the middle clamping wheel.

[0027] Among them, 1-guide member, 11-guide cavity, 12-guide end, 14-adjusting groove, 13-connecting end, 15-cavity, 2-clamping body, 21-clamping cavity, 22-inner cavity, 23-outer conical sleeve, 24-clamping wheel, 241-clamping section, 25-housing, 26-power rod. DETAILED DESCRIPTION

[0028] The Kirschner wire clamping device of the present invention will be described in more detail below in conjunction with a schematic diagram, wherein a preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation of the present invention.

[0029] like Figure 1 As shown, a Kirschner wire clamping device includes a clamping body 2; the clamping body 2 is provided with a clamping cavity 21 along the axial direction; an elastic guide member 1 is fixed to the clamping end of the clamping body 2; the guide member 1 is made of silicone; a guide cavity 11 connected to the clamping cavity 21 is provided on the guide member 1; the diameter of the guide cavity 11 is smaller than the diameter of the clamping cavity 21. The Kirschner wire passes through the guide cavity 11 and extends into the clamping cavity 21. The Kirschner wire of smaller size is clamped and fixed by the guide cavity 11, and can be firmly extended into the installation center of the clamping cavity 21. In addition, since the diameter of the guide cavity 11 is smaller than the diameter of the clamping cavity 21, the existence of the guide cavity 11 is suitable for fixing Kirschner wires with smaller diameters, thereby expanding the clamping range of the existing Kirschner wire clamping device.

[0030] like Figure 4 As shown, the guide cavity 11 is a truncated cone; the guide cavity 11 includes a guide end 12, a cavity 15 and a connection end 13 connected in sequence; an adjustment groove is radially provided on the cavity 15. The existence of the adjustment groove allows the cavity 15 to expand to a certain extent to achieve the matching clamping with the Kirschner wire. Therefore, the adjustment groove further expands the clamping range of the Kirschner wire clamping device. Furthermore, the adjustment groove is symmetrically arranged.

[0031] In this embodiment, the cross-sectional diameter of the connecting end 13 is 0.8 mm to 1.2 mm, such as 0.9 mm, 1 mm, 1.1 mm; the connecting end 13 is a small end; the cross-sectional diameter of the guide end 12 is 5 mm; the width of the adjustment groove is 0.1 mm to 0.3 mm, such as 0.2 mm, 0.25 mm.

[0032] In this embodiment, the guide cavity 11 and the clamping cavity 21 are arranged cocentrically.

[0033] like Figures 1 to 3 As shown, the clamping body 2 includes an outer shell 25, an outer conical sleeve 23, an inner cavity 22 and at least one pair of clamping wheels 24; the inner cavity 22 is fixed in the outer shell 25 and defines a clamping cavity 21; the outer conical sleeve 23 is sleeved on the inner cavity 22 and moves along the axial direction of the inner cavity 22; the outer conical sleeve 23 is provided with a mounting groove along the circumferential direction; the mounting groove is connected to the clamping cavity 21; the clamping wheel 24 is embedded in the mounting groove and contacts the inner wall of the outer conical sleeve 23; the clamping wheel 24 extends into the clamping cavity 21; the clamping section 241 of the clamping wheel 24 extending into the clamping cavity 21 is a plane, as shown in FIG. Figure 5As shown. The contact surface between the clamping wheel 24 and the Kirschner wire is a plane. Compared with the arc contact in the prior art, the clamping wheel 24 expands the contact area with the Kirschner wire through the plane section, thereby improving the clamping effect. Furthermore, the clamping body 2 includes a power rod 26; the power rod 26 is arranged on the housing 25 through a rotating shaft; one end of the power rod 26 extends into the housing 25 and is fixed on the outer conical sleeve 23.

[0034] In this embodiment, the number of the clamping wheels 24 is 4 and they are symmetrically distributed. The minimum diameter of the clamping gap surrounded by the clamping wheels 24 is 2.5 mm. Therefore, when installing, the Kirschner wire with a diameter less than 2.5 mm will be clamped in the gap between adjacent locking wheels, causing the Kirschner wire to shake. Therefore, by installing the guide member 1, the Kirschner wire with a diameter less than 2.5 mm can be stably inserted into the installation center of the clamping cavity 21.

[0035] In summary, in the Kirschner wire clamping device provided in the embodiment of the present invention, by providing a guide member 1 that can generate elastic deformation, the problem that small Kirschner wires cannot be clamped in the industry is solved. At the same time, the clamping range is expanded, and the clamping device can be applied to different Kirschner wires during use without replacing the clamping device. Furthermore, the setting of the adjustment groove further expands the clamping range and improves the applicability of the clamping device. In addition, the clamping wheel 24 expands the contact area with the Kirschner wire through the plane section, thereby improving the clamping effect.

[0036] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A Kirschner wire clamping device, characterized in that: The clamping body comprises a clamping cavity provided in the clamping body along the axial direction; the clamping section of the clamping body is a plane; an elastic guide member is fixed to the clamping end of the clamping body; a guide cavity communicating with the clamping cavity is provided in the guide member; the diameter of the guide cavity is smaller than the diameter of the clamping cavity; The clamping body comprises a housing, an outer tapered sleeve, an inner cavity and at least one pair of clamping wheels; The inner cavity is fixed in the outer shell and defines the clamping cavity; The outer conical sleeve is sleeved on the inner cavity and moves along the axial direction of the inner cavity; the inner wall of the outer conical sleeve encloses a cylindrical cavity and a conical cavity connected to the cylindrical cavity, the cylindrical cavity is arranged toward the guide member, and the large end of the conical cavity is connected to the cylindrical cavity; The inner cavity is provided with a mounting groove along the circumferential direction; the mounting groove is connected to the clamping cavity; The clamping wheel is embedded in the installation groove and contacts the inner wall of the outer conical sleeve; a gap is formed between the clamping wheel and the installation groove; the clamping wheel extends into the clamping cavity; the part of the clamping wheel extending into the clamping cavity is the clamping section.

2. The Kirschner wire clamping device according to claim 1, characterized in that: The guide cavity is in a truncated cone shape; the guide cavity comprises a guide end, a cavity body and a connection end which are connected in sequence; and an adjustment groove is radially arranged on the cavity body.

3. The Kirschner wire clamping device according to claim 2, characterized in that: The cross-sectional diameter of the connecting end is 0.8 mm to 1.2 mm; the width of the adjusting groove is 0.1 mm to 0.3 mm.

4. The Kirschner wire clamping device according to claim 2, characterized in that: The connecting end is a small end.

5. The Kirschner wire clamping device according to claim 2, characterized in that: The guide cavity and the clamping cavity are arranged cocentrically.

6. The Kirschner wire clamping device according to claim 2, characterized in that: The adjusting grooves are symmetrically arranged.

7. The Kirschner wire clamping device according to claim 1, characterized in that: It further comprises a power rod; the power rod is arranged on the shell through a rotating shaft; one end of the power rod extends into the shell and is fixed on the outer conical sleeve.

8. The Kirschner wire clamping device according to claim 1, characterized in that: The number of the clamping wheels is 4 and they are symmetrically distributed.

9. The Kirschner wire clamping device according to claim 1, characterized in that: The minimum diameter of the clamping gap formed by the clamping wheel is 2.5 mm.

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