Shoulder glenoid kirschner wire positioning tool

Abstract

The utility model provides a shoulder glenoid kirschner wire positioning tool, which solves the problems that most of the existing kirschner wire positioning structures are slotted, the kirschner wire can only be adjusted in one direction, and the positioning is inaccurate due to rotation deviation and the like in the slot, and adopts the main scheme that the shoulder glenoid kirschner wire positioning tool comprises a handle and a kirschner wire, a positioning piece is fixed at the tail end of the connecting rod and comprises at least one welding part and a plurality of kirschner wire positioning holes, the tail end of the connecting rod is fixedly connected with the welding part, the kirschner wire positioning holes are laid at equal intervals, and an acute angle is kept between the axis of each opening and the axis of the connecting rod; and the kirschner wire can be inserted and limited in each kirschner wire positioning hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to artificial shoulder joint replacement equipment technical field especially, a shoulder glenoclival kirschner wire positioning tool. BACKGROUND

[0002] At present, along with the development of medical technology, artificial shoulder joint replacement has become a main means of treating shoulder joint disease, and specific shoulder joint prosthesis replacement can be used for proximal humerus three-part fracture, four-part fracture, congenital deformity, shoulder malignant tumor and humeral head avascular necrosis, and has significant curative effect.

[0003] In the process of shoulder joint replacement, the Kirschner wire needs to be punched into the glenoid for positioning, and the glenoid prosthesis implantation is prepared, and the common positioning method in the operation is to use the handle with four square joints and the glenoid drill sleeve with four square interfaces to be connected and matched, and the handle is used to adjust the position of the drill sleeve to position the drilling hole.

[0004] The method of the above-mentioned shoulder glenoid handle and shoulder glenoid drill sleeve matched use is simple and feasible, but in the actual operation process, since only the shoulder glenoid drill sleeve and the shoulder glenoid plane are compared, the positioning is inclined and inaccurate, the position of the shoulder glenoid prosthesis is deviated, and finally the operation effect is affected. In addition, in the existing patents, such as CN109646154B, the technical scheme provided can also provide better positioning function, but the components are too many, the operation is complex, the doctor needs to install multiple limiting devices when using, which prolongs the operation time, increases the risk of infection of the patient, increases the amount of bleeding of the patient, and is not conducive to the recovery of the patient. At the same time, the existing patents are given in the form of positioning groove, such as CN109646154B. Although this method can be adjusted along the SI direction, it cannot be adjusted along the AP direction, which may cause inaccurate positioning. Similarly, the patent CN219835713U also only provides the function of single direction adjustment, which may cause inaccurate positioning in the operation. In addition, the patents CN109646154B and CN219835713U are given in the form of positioning groove, and in the actual operation process, the Kirschner wire is easily deviated, because the limiting groove only gives a direction of movement constraint, but the Kirschner wire can rotate in the groove, so that the positioning failure is possible. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems of overcoming the defects of the prior art, and provides a shoulder glenoclival kirschner wire positioning tool. The utility model has the advantages of simple structure, convenient operation, short operation time, corresponding structure in line with national anatomical parameter design, strong usability, bidirectional positioning adjustment, stable and accurate circular hole positioning, and no Kirschner wire inclination.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of a shoulder clavicular pin positioning tool, which comprises a handle and a clavicular pin.

[0007] Further, the positioning member comprises a horizontal rod and a guide plate.

[0008] Further, the thickness of the horizontal rod is not less than 5 mm.

[0009] Further, the guide plate is a circular arc with a diameter of not less than 110 mm, and the distance between the end of the guide plate and the horizontal rod in the horizontal direction is not less than 70 mm.

[0010] Further, the guide plate and the horizontal rod are integrally formed and welded to the connecting rod at the welding portion after being formed.

[0011] Further, the handle is ergonomically designed, and the material thereof is rubber, which is surface-coated and has anti-skid grooves under the surface coating.

[0012] Further, the diameter of each clavicular pin positioning hole is 0.05 mm larger than the diameter of the clavicular pin.

[0013] Further, the acute angle formed by the axis of the clavicular pin positioning hole and the axis of the connecting rod ranges from 30° to 60°.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. The shoulder clavicular pin positioning tool is designed according to the anatomical structure of the shoulder of a patient and has better compliance with Chinese people.

[0016] 2. The shoulder clavicular pin positioning tool can be used to accurately drive a positioning guide pin and provide implantation precision of a shoulder prosthesis, thereby improving the quality of surgery.

[0017] 3. The utility model does not need to be installed during surgery and does not need to be measured and read, which greatly shortens the surgery time, reduces the risk of infection of the patient and the amount of bleeding of the patient, and is beneficial to the recovery of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0018] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for purposes of illustration only and are not intended to limit the scope of the present application. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0019] Fig. 1 The overall structure of the positioning tool according to one embodiment of the present application is schematically shown;

[0020] Fig. 2 The front view of the positioning tool according to one embodiment of the present application is schematically shown.

[0021] Reference signs in the figure: 1, handle; 2, connecting rod; 3, guide plate; 4, cross bar; 5, Kirschner wire positioning hole; 6, Kirschner wire. DETAILED DESCRIPTION

[0022] It is easy to understand that according to the technical scheme of the present application, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical scheme of the present application.

[0023] According to one embodiment of the present application combined Figs. 1-2 is shown.

[0024] As Fig. 1 shown, for the overall structure, in the present embodiment, a scapulopexy Kirschner wire 6 positioning tool, comprising a handle 1 and a Kirschner wire 6, the handle 1 top coaxially fixed with a connecting rod 2, and a positioning member is fixed at the end of the connecting rod 2, the positioning member comprises at least one welding part and a plurality of Kirschner wire positioning holes 5, the connecting rod 2 end is connected and fixed with the welding part, a plurality of Kirschner wire positioning holes 5 are laid equidistantly, and each hole axis keeps an acute angle with the connecting rod 2 axis, the Kirschner wire 6 can be inserted and limited in each Kirschner wire positioning hole 5.

[0025] For the actual structure selection of the positioning member, it can actually include a plurality of types, in the present embodiment, it is specifically a cross bar 4 and a guide plate 3, the cross bar is a cuboid shape, a plurality of rows of Kirschner wire positioning holes 5 are equidistantly provided on its surface along the length direction and the width direction, the guide plate 3 is arc-shaped, one end is integrated with the top of the cross bar through the welding part, and the other end is spaced apart from the Kirschner wire 6.

[0026] The connecting rod 2 is made of stainless steel, the diameter is 4-6mm, and the length is 120-150mm to avoid the incision of the patient. The guide plate 3 is made of stainless steel, which is arc-shaped, and the diameter of the part contacting the glenoid of the patient is not less than 110mm, and the end is not less than 70mm away from the horizontal direction of the horizontal rod to meet the use requirements of domestic patients. The part contacting the glenoid of the patient should be designed with high polishing, and the surface roughness is not more than Ra0.05μm to avoid damage to the bone structure or soft tissue of the glenoid of the patient.

[0027] The horizontal rod 4 is a rectangular parallelepiped, and a plurality of Kirschner wire positioning holes 5 are designed in the length direction and the width direction, and the axis of the Kirschner wire positioning hole 5 is perpendicular to the horizontal rod 4. In use, the position can be adjusted in the length direction, and the position can be adjusted in the width direction, so that the best glenoid center position is found. The horizontal rod 4 should have a certain thickness to prevent the Kirschner wire 6 from being unstable after being inserted. Preferably, the thickness of the horizontal rod 44 is not less than 5mm. The diameter of the Kirschner wire positioning hole 5 should be slightly larger than the selected Kirschner wire 6. Preferably, the diameter of the Kirschner wire positioning hole 5 = the diameter of the Kirschner wire 6 + 0.05mm, so as to avoid the Kirschner wire 6 from shaking and shifting after being inserted. Preferably, the axis direction of the Kirschner wire 6 or the axis direction of the positioning hole should have an angle α with the axis direction of the connecting rod 2, as shown in the figure, the value of α should be 30°-60°, so that the Kirschner wire 6 positioning tool is more ergonomic. Fig. 2

[0028] The handle 1 is designed with ergonomics, the material is rubber, the color is blue or green, and the anti-skid groove is designed on the rubber surface to increase the grip feeling. In actual production, the guide plate 3 and the horizontal rod 4 should be integrally manufactured, and the positioning hole is cut after completion. Then, the connecting rod 2 is welded.

[0029] The corresponding working principle is as follows: after the glenoid of the patient is exposed, the Kirschner wire 6 positioning tool provided by the utility model is taken out, the doctor holds the handle 1 with the right hand, and the guide plate 3 is close to the anterior wall of the glenoid of the patient until the guide plate 3 reaches the outermost side of the glenoid fossa. In this process, the doctor can stick to the guide plate 3 with the left hand to confirm that the guide plate 3 slides along the outermost edge of the glenoid. When the best position is determined, the Kirschner wire 6 can be inserted into the glenoid of the patient through the positioning hole of the horizontal rod 4 to complete the positioning.

[0030] The technical scope of the utility model is not limited to the content in the above description, and those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection scope of the utility model.​

Claims

1. A shoulder girdle Kirschner wire positioning tool, comprising a handle and Kirschner wires, characterized in that: A connecting rod is coaxially fixed to the top of the handle, and a positioning component is fixed to the end of the connecting rod. The positioning component includes at least one welded part and multiple Kirschner wire positioning holes. The end of the connecting rod is connected and fixed to the welded part. The multiple Kirschner wire positioning holes are laid at equal intervals, and the axis of each hole is kept at an acute angle to the axis of the connecting rod. The Kirschner wire can be inserted and limited in each Kirschner wire positioning hole.

2. The shoulder girdle Kirschner wire positioning tool according to claim 1, characterized in that: The positioning component includes a crossbar and a guide plate. The crossbar is rectangular in shape, and its surface has multiple rows of Kirschner wire positioning holes equidistantly spaced along the length and width directions. The guide plate is arc-shaped, with one end connected to the top of the crossbar via the welding part, and the other end spaced apart from the Kirschner wires.

3. The shoulder girdle Kirschner wire positioning tool according to claim 2, characterized in that: The thickness of the crossbar is not less than 5mm.

4. The shoulder girdle Kirschner wire positioning tool according to claim 2, characterized in that: The guide plate is an arc with a corresponding diameter of not less than 110mm, and its end is at a distance of not less than 70mm from the crossbar in the horizontal direction.

5. A shoulder girdle Kirschner wire positioning tool according to claim 2, characterized in that: The guide plate and the crossbar are integrally formed, and after forming, they are welded to the connecting rod at the welding part.

6. The shoulder girdle Kirschner wire positioning tool according to claim 1, characterized in that: The handle is ergonomically designed and made of rubber. Its surface is coated with rubber and has anti-slip grooves.

7. A shoulder girdle Kirschner wire positioning tool according to any one of claims 1-5, characterized in that: The diameter of each Kirschner wire positioning hole is 0.05 mm larger than the diameter of the Kirschner wire.

8. A shoulder girdle Kirschner wire positioning tool according to any one of claims 1-5, characterized in that: The acute angle formed by the axis of the Kirschner wire positioning hole and the axis of the connecting rod is in the range of 30° to 60°.

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