Kirschner wire positioning device for closed osteotomy

Abstract

The utility model discloses a kirschner wire positioning device for closed osteotomy. The kirschner wire positioning device comprises a positioning bevel protractor and a guide block, the positioning bevel protractor is arranged in an arc shape, and a sliding groove is formed in the periphery of the positioning bevel protractor. The guide block is slidably arranged on the periphery of the positioning angle ruler, and a sliding part in sliding fit with the sliding groove is arranged on the guide block; the outer side of the guide block is provided with a plurality of pairs of guide holes which are arranged side by side up and down and used for allowing kirschner wires to penetrate through, the guide holes penetrate through the guide block in the radial direction of the positioning angle ruler, and the guide block can be adjusted in a sliding mode according to needs. The front ends of the kirschner wires inserted into the guide holes can be concentrated at one point on a vertical plane, and the kirschner wires can be quickly and accurately drilled into the same position in a bone, so that accurate osteotomy is realized, the risk of occurrence of related complications of an operation is reduced, the integrity of two side surfaces of a wedge-shaped bone block cut from the bone is ensured, and the cutting efficiency of the wedge-shaped bone block is improved. The first osteotomy plane and the second osteotomy plane can be tightly attached conveniently, and rapid rehabilitation of a patient is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a Kirschner wire positioning device used in closed osteotomy surgery. Background Art

[0002] Osteotomy is a commonly used method for treating limb deformity and arthritis, especially around the knee joint. Incomplete osteotomy has the advantages of firm fixation, early movement, and fast healing of broken ends. Incomplete osteotomy is divided into closed osteotomy and distraction osteotomy. In closed osteotomy surgery, not only the integrity of the osteotomy hinge needs to be considered, but also the thickness of the bone block obtained after osteotomy should be accurate, and the two osteotomy planes after closure should fit as completely as possible. In closed osteotomy surgery, different medical staff can only insert the Kirschner wire into the osteotomy position based on experience and repeated attempts, that is, it can only be judged by the doctor's experience and naked eye observation; this not only affects the surgical effect and prolongs the operation time, but also the doctor and the patient will be exposed to a large amount of X-ray radiation damage, and whether the final placement of the Kirschner wire is ideal cannot be verified by measurement or objective data. Therefore, a Kirschner wire positioning device that is easy to operate for closed osteotomy surgery should be provided. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the present utility model is to provide a Kirschner wire positioning device for closed osteotomy surgery, which can drill multiple Kirschner wires into the same position in the bone to achieve precise positioning, which is conducive to improving the accuracy of osteotomy surgery.

[0004] The technical solution adopted by the utility model is: a Kirschner wire positioning device for closed osteotomy surgery, comprising a positioning angle ruler and a guide block; the positioning angle ruler is arranged in an arc shape, and a sliding groove is provided on the outer periphery of the positioning angle ruler; the guide block is slidably arranged on the outer periphery of the positioning angle ruler, and a sliding part that slidably cooperates with the sliding groove is provided on the guide block; a plurality of pairs of guide holes arranged in parallel up and down for Kirschner wires to pass through are provided on the outer side of the guide block, and each guide hole penetrates the guide block radially along the positioning angle ruler, and the front end of the Kirschner wire inserted in the guide hole can be concentrated on a point on the vertical plane inside the positioning angle ruler.

[0005] The technical solution consists of a positioning angle ruler and a guide block. On the one hand, the positioning angle ruler plays a role in installing the guide block. On the other hand, the guide block and the positioning angle ruler slide together to enable the guide block to be slidably adjusted. Each guide block is provided with a plurality of pairs of guide holes arranged up and down. When the Kirschner wires are inserted into each guide hole, the front end of each Kirschner wire can be concentrated on a point on the vertical plane, so that multiple Kirschner wires can be quickly and accurately drilled into the same position in the bone, which is conducive to achieving precise osteotomy, can effectively shorten the operation time, reduce the risk of operation-related complications, and achieve rapid recovery of patients.

[0006] Preferably, an adjusting bolt passing through the sliding part is threadedly connected to the outer side of the guide block, and the adjusting bolt is movably connected to a fixing plate located on the inner circumference of the positioning angle ruler. A tightening knob is provided at one end of the adjusting bolt located on the outer side of the guide block.

[0007] Preferably, an angle dial is provided on the upper edge of the positioning angle ruler, and an angle pointer located on the upper surface of the positioning angle ruler is provided in the middle of the upper end of the guide block.

[0008] Preferably, a pointer connecting portion for installing an angle pointer is provided at the upper end of the guide block.

[0009] The beneficial effects of the utility model are as follows: the utility model enables the guide block to be slidably adjusted as needed through the sliding cooperation between the guide block and the positioning angle ruler; each guide block is provided with a plurality of pairs of guide holes arranged up and down, and the front ends of the Kirschner wires inserted into the guide holes can be concentrated on a point on the vertical plane, so that a plurality of Kirschner wires can be drilled into the same position in the bone quickly and accurately, which is conducive to achieving precise osteotomy and reducing the risk of occurrence of surgery-related complications, while ensuring the integrity of the two side surfaces of the wedge-shaped bone block cut from the bone, facilitating the close fit between the first osteotomy plane and the second osteotomy plane, which can effectively shorten the operation time and help the patient recover quickly; the utility model has a reasonable structure and is simple to operate; and has a high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0011] Figure 1 It is a stereoscopic view of a Kirschner wire positioning device for closed osteotomy surgery provided in an embodiment of the utility model.

[0012] Figure 2 This is a schematic diagram of the use of the Kirschner wire positioning device for closed osteotomy surgery provided in an embodiment of the utility model.

[0013] Reference numerals: positioning angle ruler 100 , slide groove 110 , guide block 200 , sliding portion 210 , guide hole 220 , pointer connecting portion 230 , Kirschner wire 300 , adjusting bolt 400 , angle dial 500 , angle pointer 600 . DETAILED DESCRIPTION

[0014] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0015] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0016] like Figure 1 and Figure 2 As shown, a specific embodiment of the utility model provides a Kirschner wire positioning device for closed osteotomy surgery, which is used to achieve precise osteotomy, effectively shorten the operation time, and reduce the risk of operation-related complications; it specifically includes a positioning angle ruler 100 and a guide block 200; the positioning angle ruler 100 is arranged in an arc shape, and a slide groove 110 is provided on the outer periphery of the positioning angle ruler 100; the guide block 200 is slidably arranged on the outer periphery of the positioning angle ruler 100, and a sliding portion 210 slidably matched with the slide groove 110 is provided on the guide block 200; a plurality of pairs of guide holes 220 arranged in parallel up and down are provided on the outer side of the guide block 200 for the Kirschner wire 300 to pass through, and each guide hole 220 radially penetrates the guide block 200 along the positioning angle ruler 100, and the front end of the Kirschner wire 300 inserted in the guide hole 220 can be concentrated on a point on the vertical plane inside the positioning angle ruler 100.

[0017] like Figure 1 and Figure 2 As shown, through the above-mentioned arrangement, in this embodiment, the guide block 200 is slidably installed by the positioning angle ruler 100, and the stability and accuracy of the movement of the guide block 200 are ensured by the sliding cooperation between the slide groove 110 and the sliding part 210. When in use, the position of the guide block 200 can be accurately adjusted according to the osteotomy position, and the guide holes 220 on the guide block 200 are arranged obliquely. When the Kirschner wires 300 are inserted into each guide hole 220, the front ends of each Kirschner wire 300 can be concentrated on a point on the vertical plane, which helps medical staff to quickly and accurately place multiple Kirschner wires 300 into the same position in the bone, which is conducive to achieving precise osteotomy, can effectively shorten the operation time, reduce the risk of operation-related complications, and achieve rapid recovery of patients; in actual applications, for actual usage scenarios, the sliding adjustment range of the guide block 200 is preferably 30 degrees, and the positioning angle ruler 100 with an arc-shaped structure adopts an arc structure with a radius of 70 cm.

[0018] like Figure 1 and Figure 2As shown, when the device is actually used, after the guide block 200 is adjusted to the corresponding position, the position of the guide block 200 needs to be fixed. Therefore, in this embodiment, the outer side of the guide block 200 is threaded with an adjusting bolt 400 passing through the sliding part 210, and the adjusting bolt 400 is threadedly connected with a fixing plate located on the inner circumference of the positioning angle ruler 100, and a tightening knob is provided at one end of the adjusting bolt 400 located on the outer side of the guide block 200. In this way, by turning the tightening knob, the fixing block is closely fitted with the inner circumference of the positioning angle ruler 100, thereby fixing the guide block 200. Similarly, by reversing the tightening knob to separate the fixing plate from the inner circumference of the positioning angle ruler 100, the guide block 200 can be slid along the slide groove 110, thereby improving the convenience of adjustment.

[0019] like Figure 1 and Figure 2 As shown, when the device is in use, it needs to be accurately positioned according to the insertion position of the Kirschner wire 300. In order to facilitate medical staff to accurately adjust the angle of the guide block 200, this embodiment is provided with an angle dial 500 at the upper edge of the positioning angle ruler 100, and an angle pointer 600 located on the upper surface of the positioning angle ruler 100 is provided in the middle of the upper end of the guide block 200. Through the cooperation of the angle pointer 600 and the angle dial 500, the adjustment angle of the guide block 200 is accurately controlled to improve the accuracy of the operation. In addition, in this embodiment, a pointer connecting portion 230 for installing the angle pointer 600 is provided at the upper end of the guide block 200.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A Kirschner wire positioning device for closed osteotomy surgery, characterized in that: It comprises a positioning angle ruler (100) and a guide block (200); The positioning angle ruler (100) is arranged in an arc shape, and a sliding groove (110) is provided on the outer periphery of the positioning angle ruler (100); The guide block (200) is slidably arranged on the outer periphery of the positioning angle ruler (100), and a sliding portion (210) is provided on the guide block (200) and is slidably matched with the slide groove (110); The outer side of the guide block (200) is provided with a plurality of pairs of guide holes (220) arranged in parallel up and down for Kirschner wires (300) to pass through, each guide hole (220) radially penetrates the guide block (200) along the positioning angle ruler (100), and the front end of the Kirschner wire (300) passing through the guide hole (220) can be concentrated at a point on the vertical plane inside the positioning angle ruler (100).

2. The Kirschner wire positioning device for closed osteotomy surgery according to claim 1, characterized in that: An adjusting bolt (400) passing through the sliding portion (210) is threadedly connected to the outer side of the guide block (200); the adjusting bolt (400) is threadably connected to a fixing plate located on the inner circumference of the positioning angle ruler (100); and a tightening knob is provided at one end of the adjusting bolt (400) located on the outer side of the guide block (200).

3. The Kirschner wire positioning device for closed osteotomy surgery according to claim 1, characterized in that: An angle dial (500) is provided at the upper edge of the positioning angle ruler (100), and an angle pointer (600) located on the upper surface of the positioning angle ruler (100) is provided at the middle of the upper end of the guide block (200).

4. The Kirschner wire positioning device for closed osteotomy surgery according to claim 3, characterized in that: The upper end of the guide block (200) is provided with a pointer connecting portion (230) for mounting an angle pointer (600).

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