A positionable bone forceps

Abstract

The utility model provides a positionable bone forceps, including a first forceps body and a second forceps body, the middle parts of the two are hinged, the first forceps body is penetrated by two slide grooves, a sleeve is slidably provided in the slide groove, a Kirschner wire is passed through the sleeve; a positioning rack is provided at the lower end of the first forceps body, a clamping hole for the positioning rack to pass through is provided at the lower end of the second forceps body, and a locking pin is slidably provided on one side of the second forceps body corresponding to the clamping hole, and the locking pin is meshed with the positioning rack. The utility model utilizes a sleeve to connect the bone forceps with the Kirschner wire, and the positioning of the first forceps body is achieved by positioning the Kirschner wire on the bone. At the same time, the setting of the slide groove can adjust the positions of the two Kirschner wires to adapt to bones of different sizes; on the other hand, the position of the second forceps body relative to the first forceps body is fixed by the setting of the positioning rack, thereby achieving the overall positioning of the bone forceps to avoid displacement of bone blocks during surgery.

Description

Technical Field

[0001] The utility model relates to a bone forceps, in particular to a positionable bone forceps. Background Art

[0002] Fracture is one of the most common types of clinical surgery. Reduction forceps have always played a role in temporarily fixing and maintaining the alignment of fractures in bone reduction, providing great convenience for orthopedic surgery.

[0003] The orthopedic reduction forceps currently on the market do not have relevant positioning auxiliary mechanisms. During the fracture reduction process, the bone fragments are only aligned by hand-held bone forceps, which makes it difficult to maintain basic positioning stability, resulting in less than ideal surgical results. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model aims to provide a positionable bone forceps, which can be used to position the bone forceps during surgery. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] (II) Technical solution

[0007] A positionable bone forceps comprises a first jaw body and a second jaw body, which are hinged in the middle, the first jaw body is penetrated by two slide grooves, a sleeve is slidably arranged in the slide groove, and a Kirschner wire is passed through the sleeve; a positioning rack is provided at the lower end of the first jaw body, a clamping hole for the positioning rack to pass through is provided at the lower end of the second jaw body, and a locking pin is slidably provided on one side of the second jaw body corresponding to the clamping hole, and the locking pin is meshed with the positioning rack.

[0008] Furthermore, the two sliding grooves are respectively located on both sides of a hinge point between the first clamp body and the second clamp body.

[0009] Furthermore, the sleeve is provided with an external thread, and the portions thereof located at the front and rear sides of the first caliper body are respectively provided with at least one locking nut.

[0010] Furthermore, a locking block is provided at the inner end of the locking pin, and the locking block is adapted to the shape of the positioning teeth on the positioning rack.

[0011] Furthermore, a spring is provided on the outer sleeve of the portion of the locking pin that passes through the second caliper body, and the spring is in a compressed state, so that the locking pin is pressed on the positioning rack.

[0012] Furthermore, the positioning teeth on the positioning rack are one-way teeth.

[0013] Furthermore, the top of the sleeve is in a frustum shape and has a contraction seam, and a locking nut is sleeved on the top of the sleeve.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, the bone forceps are connected to the Kirschner wire by using a sleeve, and the positioning of the Kirschner wire on the bone is used to achieve the positioning of the first forceps body. At the same time, the setting of the slide groove can adjust the positions of the two Kirschner wires to adapt to bones of different sizes. On the other hand, the position of the second forceps body relative to the first forceps body is fixed by the setting of the positioning rack, thereby achieving the overall positioning of the bone forceps and avoiding bone displacement during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the clamping hole.

[0019] Description of Figure Numbers:

[0020] 1. First clamp body; 11. Slide groove; 2. Second clamp body;

[0021] 21. Clamp hole; 3. Sleeve; 4. Kirschner wire;

[0022] 5. Locking nut; 6. Positioning rack; 61. Positioning tooth;

[0023] 7. Locking pin; 8. Spring; 9. Locking block. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] See also Figure 1 As shown, a positionable bone forceps comprises a first forceps body 1 and a second forceps body 2, which are hinged in the middle, and the first forceps body 1 is provided with two slide grooves 11, and a sleeve 3 is slidably arranged in the slide groove 11, and a Kirschner wire 4 is inserted in the sleeve 3;

[0030] Through the above technical solution, the sleeve 3 is used to connect the bone forceps to the Kirschner wire 4, and the positioning of the first forceps body 1 is achieved by positioning the Kirschner wire 4 on the bone. At the same time, the setting of the slide groove 11 can adjust the positions of the two Kirschner wires 4 to adapt to bones of different sizes.

[0031] On the other hand, a positioning rack 6 is provided at the lower end of the first pliers body 1, a clamping hole 21 is provided at the lower end of the second pliers body 2 for the positioning rack 6 to pass through, and a locking pin 7 is slidably provided on one side of the second pliers body 2 corresponding to the clamping hole 21, and the locking pin 7 is meshed with the positioning rack 6;

[0032] By providing the positioning rack 6, the position of the second clamp body 2 relative to the first clamp body 1 is fixed, thereby achieving overall positioning of the bone clamp and avoiding displacement of bone blocks during surgery.

[0033] It can be understood that the two slide grooves 11 are respectively located on both sides of the hinge point between the first clamp body 1 and the second clamp body 2, so as to improve stability.

[0034] In order to fix the position of the sleeve 3 in the slide groove 11, the sleeve 3 is provided with an external thread, and its parts located on the front and rear sides of the first caliper body 1 are respectively provided with at least one locking nut 5; the locking nut 5 fixes the sleeve 3 on the first caliper body 1 from both sides.

[0035] It is worth mentioning that in order to further maintain the position of the bone forceps and prevent it from sliding up and down on the Kirschner wire 4, the top of the sleeve 3 is frustum-shaped and has a contraction seam, and a locking nut 5 is sleeved on the top of the sleeve 3; the locking nut 5 is used to tighten the contraction seam at the top of the sleeve 3, thereby fixing the relative position of the sleeve 3 and the Kirschner wire 4 to achieve the height positioning of the bone forceps.

[0036] It should be noted that a locking block 9 is provided at the inner end of the locking pin 7 , and the locking block 9 is matched in shape with the positioning teeth 61 on the positioning rack 6 , thereby clamping the positioning rack 6 .

[0037] In the above solution, in order to make the locking block 9 always stuck between the specific positioning teeth 61, as shown in FIG. Figure 2 The locking pin 7 is inserted into the second caliper body 2 and a spring 8 is provided on the outer sleeve. The spring 8 is in a compressed state so that the locking pin 7 is pressed against the positioning rack 6 .

[0038] It is worth mentioning that the positioning teeth 61 on the positioning rack 6 are one-way teeth; when the bone block is clamped, the positioning teeth 61 will push the locking pin 7 to move outward, but to loosen the bone block, the locking pin 7 needs to be pulled outward.

[0039] It should be added that the slide groove 11 can be opened on the main body of the first clamp body 1, or a protrusion can be separately set on one side of the first clamp body 1 by welding, screws, etc., and the slide groove 11 is set on the protrusion (not shown in the figure); the former has a compact structure and is suitable for the ulna, tibia and other parts; the latter has a first clamp body 1 that is stronger than the former, but has an increased volume, and is suitable for the tibia, femur and other parts.

[0040] The overall use steps of the utility model are:

[0041] 1. First, adjust the position of the sleeve 3 according to the shape and size of the surgical bone, so that the center points of the two sleeves 3 are both within the range of the bone, and then tighten the locking nut 5;

[0042] 2. Clamp the bone block. When clamping, the pliers body has a certain elasticity, so the positioning rack 6 and the locking pin 7 can enable the bone clamp to clamp the bone block;

[0043] 3. Reset the bone block and keep the position of the bone clamp, then pass the Kirschner wire 4 through the sleeve 3 and fix it on the bone;

[0044] 4. Reposition the bone block and tighten the locking nut 5 at the top of the sleeve 3 to complete the positioning of the bone block.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A positionable bone forceps, comprising a first forceps body (1) and a second forceps body (2), the two being hinged in the middle, characterized in that: The first pliers body (1) is provided with two sliding grooves (11), a sleeve (3) is slidably arranged in the sliding groove (11), and a Kirschner wire (4) is inserted in the sleeve (3); a positioning rack (6) is provided at the lower end of the first pliers body (1), a clamping hole (21) for the positioning rack (6) to pass through is provided at the lower end of the second pliers body (2), and a locking pin (7) is slidably arranged on one side of the second pliers body (2) corresponding to the clamping hole (21), and the locking pin (7) is meshed with the positioning rack (6).

2. A positionable bone forceps according to claim 1, characterized in that: The two slide grooves (11) are respectively located on both sides of the hinge point between the first clamp body (1) and the second clamp body (2).

3. A positionable bone forceps according to claim 1, characterized in that: The sleeve (3) is provided with an external thread, and the parts thereof located at the front and rear sides of the first caliper body (1) are respectively provided with at least one locking nut (5).

4. A positionable bone forceps according to claim 1, characterized in that: A locking block (9) is provided at the inner end of the locking pin (7), and the locking block (9) is matched in shape to the positioning tooth (61) on the positioning rack (6).

5. A positionable bone forceps according to claim 4, characterized in that: The outer portion of the locking pin (7) that passes through the second caliper body (2) is provided with a spring (8), and the spring (8) is in a compressed state, so that the locking pin (7) is pressed onto the positioning rack (6).

6. A positionable bone forceps according to claim 1 or 4, characterized in that: The positioning teeth (61) on the positioning rack (6) are one-way teeth.

7. A positionable bone forceps according to claim 1, characterized in that: The top of the sleeve (3) is in a frustum shape and has a contraction seam, and a locking nut (5) is sleeved on the top of the sleeve (3).

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