CN219742823U - Percutaneous kirschner wire cutter - Google Patents

Abstract

The utility model provides a percutaneous kirschner wire cutter, which relates to the technical field of medical auxiliary instruments and comprises a cutter body, wherein the cutter body is of a metal flat sheet-shaped structure and comprises a cutting edge part and a cutter body part, the cutting edge part is arranged at the end part of the cutter body part and is integrally formed with the cutter body part, and a kirschner wire clamping position for clamping a kirschner wire is arranged on the cutter body part. The Kirschner wire clamping position is used for clamping the Kirschner wire, namely, the Kirschner wire clamping position can enable the cutter body to be tightly attached to the Kirschner wire, so that the incision is tidy, safe and quick when the cutting edge of the cutter body is used for incising skin tissues, and the probability of secondary damage is reduced.

Description

Percutaneous kirschner wire cutter

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a percutaneous kirschner wire cutter.

Background

Kirschner wire is one kind of inner fixing material for fixing fractured bone block in operation, or extracorporeal percutaneous positioning, and has diameter of 0.5-4.0mm. Clinically, the Kirschner wire is passed through the skin without making an incision, and the position, angle and length of penetration into the bone through the skin are adjusted under X-ray fluoroscopy.

However, it is sometimes necessary to cut along the kirschner wire at the skin entrance site with a scalpel, and a conventional scalpel is often used to cut along the region where the kirschner wire contacts the skin to both sides of the kirschner wire for the next operation, such as screwing in a hollow nail, or the like. On the one hand, the incision cannot be straight because of the obstruction of the kirschner wire itself. On the other hand, a deviation in direction may occur when cutting along the k-wire into the deep tissue, and it is not guaranteed that the cut is immediately adjacent to the k-wire. The Kirschner wire is not easy to damage other tissues such as vascular tendons and the like except the incision area, the operations of exposing the bone surface along the Kirschner wire, screwing in the hollow nails and the like in the next step cannot be performed, and the Kirschner wire needs to be incised deep into the tissues again. Causing uneven incisions, secondary injuries, etc.

Therefore, how to overcome the problems of uneven cut skin caused by the blocking of the kirschner wire and the easy damage to the important vascular nerve tendon tissue under the skin caused by the cutting of the skin cut along the entrance of the skin by using a surgical knife in the prior art is a technical problem to be solved urgently by the person skilled in the art.

Disclosure of Invention

Accordingly, the present utility model is directed to a percutaneous kirschner wire cutter, which solves the technical problems that the percutaneous kirschner wire is cut along the skin entrance by a surgical knife in the prior art, the cut skin is uneven due to the blocking of the kirschner wire, and the critical vascular nerve tendon tissue under the skin is easily damaged.

In order to achieve the above purpose, the utility model provides a percutaneous kirschner wire cutter, which comprises a cutter body, wherein the cutter body is of a metal flat sheet-shaped structure, the cutter body comprises a blade part and a cutter body part, the blade part is arranged at the end part of the cutter body part and is integrally formed with the cutter body part, and the cutter body part is provided with a kirschner wire clamping position for clamping the kirschner wire.

According to an alternative embodiment, the blade portion is tapered.

According to an alternative embodiment, the blade portion is provided in a triangular or arcuate shape.

According to an alternative embodiment, the blade portion conforms to the shape of the blade body portion.

According to an alternative embodiment, the blade body is rectangular, triangular or oval.

According to an alternative embodiment, the k-wire snap-fit position is a bar-shaped snap-in groove extending along the length direction of the cutter body.

According to an alternative embodiment, the strip-shaped clamping groove is placed on the axial symmetry center line of the cutter body.

According to an alternative embodiment, the k-wire snap-fit position is a sleeve, the sleeve being arc-shaped or semi-circular in shape, the sleeve extending along the length of the blade body.

According to an alternative embodiment, the sleeve is placed on the axial symmetry centre line of the blade body.

According to an alternative embodiment, the k-wire snap-fit position is a snap ring, which is placed on the axial symmetry center line of the cutter body.

The percutaneous needle cutter provided by the utility model has the following technical effects:

the percutaneous kirschner wire cutter mainly comprises a cutter body, wherein the cutter body is of a metal flat sheet-shaped structure and comprises a cutting edge part and a cutter body part, the cutting edge part is arranged at the end part of the cutter body part and is integrally formed with the cutter body part, and a kirschner wire clamping position is arranged on the cutter body part.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of a percutaneous needle cutter according to example 1 of the present utility model;

fig. 2 is a schematic view showing the structure of a percutaneous needle cutter according to example 2 of the present utility model.

Wherein, fig. 1-2:

1. a cutter body; 11. a cutter body portion; 111. a strip-shaped clamping groove; 12. a blade part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

As described in the background art, a conventional scalpel in the prior art performs incision on both sides of the Kirschner wire along the contact portion of the Kirschner wire with the skin, so as to perform the next operation, such as screwing in a hollow nail, etc. On the one hand, the incision cannot be straight because of the obstruction of the kirschner wire itself. On the other hand, a deviation in direction may occur when cutting along the k-wire into the deep tissue, and it is not guaranteed that the cut is immediately adjacent to the k-wire. The Kirschner wire is not easy to damage other tissues such as vascular tendons and the like except the incision area, the operations of exposing the bone surface along the Kirschner wire, screwing in the hollow nails and the like in the next step cannot be performed, and the Kirschner wire needs to be incised deep into the tissues again. Causing uneven incisions, secondary injuries, etc.

The utility model provides a percutaneous kirschner wire cutter which mainly comprises a cutter body, wherein the cutter body is of a metal flat sheet-shaped structure and comprises a blade part and a cutter body part, the blade part is arranged at the end part of the cutter body part and is integrally formed with the cutter body part, and a kirschner wire clamping position is arranged on the cutter body part and is used for clamping a kirschner wire, namely, the kirschner wire clamping position can enable the cutter body to be tightly attached to the kirschner wire, so that the blade part of the cutter body can cut skin tissues neatly, safely and quickly, and the probability of auxiliary damage is reduced.

The blade part of the utility model can be conical, triangular or arc-shaped, and can be consistent with the shape of the cutter body, and the utility model is not limited to the specific shape of the blade part.

Likewise, the cutter body may be rectangular, triangular or elliptical, and the shape of the cutter body is not limited in the present utility model.

And the clamping position of the Kirschner wire is a strip-shaped clamping groove or a sleeve, and can also be a clamping ring, the strip-shaped clamping groove and the sleeve extend along the length direction of the cutter body, the sleeve is arc-shaped or semicircular, and the strip-shaped clamping groove and the sleeve are arranged on the axial symmetry center line of the cutter body. In addition, the clamping position of the Kirschner wire can also be a clamping ring, and the clamping ring is also arranged on the axial symmetry center line of the cutter body. The clamping device is not limited to the specific shape of the clamping position of the Kirschner wire, and is a bar-shaped clamping groove, a sleeve and a clamping ring, so long as the purpose of clamping the Kirschner wire can be achieved, the clamping device is within the protection scope of the utility model.

The technical scheme of the present utility model will be described in detail with reference to specific examples 1 and 2.

Example 1:

the percutaneous kirschner wire cutter provided in this embodiment, see fig. 1, includes a cutter body 1, wherein the cutter body 1 is of a flat metal sheet structure, and the flat metal structure is convenient for forming a sharp cutting edge, so that the tissue of the joint between the kirschner wire and the bone is incised, and the bone surface is exposed.

The cutter body 1 of the present embodiment includes a blade portion 12 and a cutter body portion 11, as shown in fig. 1, the blade portion 12 is disposed at an end portion of the cutter body portion 11 and is integrally formed with the cutter body portion 11, and the cutter body portion 11 is provided with a k-wire fastening position for fastening a k-wire.

The blade 12 of this embodiment is preferably tapered, the cutter body 11 is preferably rectangular, the k-wire clip position is preferably a bar-shaped clip groove 111, the bar-shaped clip groove 111 extends along the length direction of the cutter body 11, the bar-shaped clip groove 111 is disposed on the axial symmetry center line of the cutter body 11, and the cross section of the bar-shaped clip groove 111 is arc-shaped or semicircular.

The diameter of the bar-shaped clamping groove 111 in this embodiment is not limited, and kirschner wires with different diameters may be clamped.

The strip-shaped clamping groove 111 of the cutter body 11 is convenient for clamping the Kirschner wire, the conical cutting edge 12 can break the skin, and the cutter body 1 can cut the skin and subcutaneous tissues along the Kirschner wire simply and quickly due to the fact that the strip-shaped clamping groove 111 can clamp the Kirschner wire, the incision is neat, and the tissue under the incision is protected in a controllable range.

Example 2:

the percutaneous kirschner wire cutter provided in this embodiment, see fig. 2, includes a cutter body 1, wherein the cutter body 1 is of a flat metal sheet structure, and the flat metal structure is convenient for forming a sharp cutting edge, so that the tissue of the joint between the kirschner wire and the bone is incised, and the bone surface is exposed.

The cutter body 1 of the present embodiment includes a blade portion 12 and a cutter body portion 11, as shown in fig. 2, the blade portion 12 is disposed at an end portion of the cutter body portion 11 and is integrally formed with the cutter body portion 11, and the cutter body portion 11 is provided with a k-wire fastening position for fastening a k-wire.

The blade 12 and the cutter body 11 in this embodiment are rectangular, the k-wire fastening position is preferably a bar-shaped slot 111, the bar-shaped slot 111 extends along the length direction of the blade 12 and the cutter body 11, and the bar-shaped slot 111 is disposed on the axial symmetry center line of the blade 12 and the cutter body 11.

The diameter of the bar-shaped clamping groove 111 in this embodiment is not limited, and kirschner wires with different diameters may be clamped.

The blade 12 of the cutter body 1 of the present embodiment is straight for further cutting the skin and subcutaneous tissue up to the bone surface, expanding the incision range again, and cutting the tissue at the junction of the k-wire and the bone to expose the bone surface.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a percutaneous kirschner wire cutter, its characterized in that includes the cutter body, the cutter body is established to metal flat sheet form structure, the cutter body includes cutting edge portion and cutter body portion, cutting edge portion arranges in the tip of cutter body portion, and with cutter body portion integrated into one piece, be equipped with the kirschner wire buckle position that is used for the buckle kirschner wire on the cutter body portion.

2. The percutaneous needle cutter of claim 1, wherein the blade portion is tapered.

3. The percutaneous needle cutter of claim 1, wherein the blade portion is provided in a triangle shape or an arc shape.

4. The percutaneous needle cutter of claim 1, wherein the blade portion conforms to the shape of the cutter body portion.

5. The percutaneous needle cutter of claim 1, wherein the cutter body is rectangular, triangular, or oval.

6. The percutaneous needle cutter of any one of claims 1-5, wherein the needle clip location is a bar-shaped slot extending along a length of the cutter body.

7. The percutaneous needle cutter of claim 6, wherein the bar-shaped slot is disposed on an axially symmetric centerline of the cutter body.

8. The percutaneous needle cutter of any one of claims 1-5, wherein the needle clip is a sleeve having an arcuate or semi-circular shape extending along the length of the cutter body.

9. The percutaneous needle cutter of claim 8, wherein the sleeve is disposed on an axial center line of symmetry of the cutter body.

10. The percutaneous needle cutter of any one of claims 1-5, wherein the needle clip is a snap ring disposed on an axially symmetric centerline of the cutter body.