K-wire guide positioning device and positioning method

Abstract

The application relates to the technical field of Kirschner wires, in particular to a Kirschner wire guiding and positioning device and a positioning method. The Kirschner wire guiding and positioning device is characterized in that the positioning guide pipe is divided into an inner guide pipe and an outer guide pipe, and a circular channel is arranged between the two guide pipes to insert an auxiliary positioning column, the posture of the positioning guide pipe is freely adjusted by adjusting the extension length of the auxiliary positioning column, correct guidance is provided for subsequent insertion of the Kirschner wire, and the difficulty of positioning is reduced because the traditional fixed structure of the Kirschner wire positioning device can only find a suitable positioning position by adjusting the posture of a doctor.

Description

Technical Field

[0001] This invention relates to the field of Kirschner wire technology, specifically to a Kirschner wire guiding and positioning device and positioning method. Background Technology

[0002] Kirschner wire fixation is a common method of internal fixation. It is often used to fix some unstable fractures. Clinically, Kirschner wire fixation is effective for fixing short bones, irregular bones, fractures near joints, and fractures across joints.

[0003] When using Kirschner wires, the positioning device needs to be pressed firmly against the patient's affected area, and then the Kirschner wire is inserted into the positioning device at a satisfactory angle. However, since the affected area is usually a non-flat location such as the ankle or femur, it is difficult to position the positioning device at a satisfactory angle. Furthermore, the insertion angle each time the needle is inserted also needs to be determined according to the patient's condition. This makes the positioning device inconvenient to use. In many cases, the doctor needs to stabilize and adjust the positioning device and repeatedly adjust the Kirschner wire, which can easily cause secondary damage or even fixation failure.

[0004] Therefore, there is an urgent need to provide a Kirschner wire guide positioning device that can be fixed at multiple angles to meet the needs of different patients. Summary of the Invention

[0005] This invention provides a Kirschner wire guiding and positioning device and a positioning method to solve the above-mentioned technical problems.

[0006] In a first aspect, the present invention provides a Kirschner wire guiding and positioning device, comprising:

[0007] Positioning guide tube;

[0008] The positioning guide tube includes: an inner guide tube and an outer guide tube that are stacked together;

[0009] After the inner guide tube and the outer guide tube are stacked, several circular channels are formed on their contact surface.

[0010] Several auxiliary positioning posts are respectively inserted into the corresponding circular channels; among them

[0011] The fixed end faces of both the inner guide tube and the outer guide tube are inclined; and

[0012] The auxiliary positioning post is adapted to extend from the circular channel at different lengths to fix the positioning guide tube in different postures.

[0013] Secondly, the present invention provides a positioning method using the above-mentioned Kirschner wire guiding and positioning device, comprising the following steps:

[0014] Step S1: Adjust the angle and position of the positioning guide tube.

[0015] Step S2: Adjust the extension length of the auxiliary positioning post to position the positioning guide tube in the usage posture;

[0016] Step S3: Rotate the inner guide tube to limit and fix the auxiliary positioning post;

[0017] Step S4: Insert the Kirschner wire through the insertion channel.

[0018] The beneficial effects of this invention are that the Kirschner wire guiding and positioning device of this invention sets the positioning guide tube as a separate inner guide tube and an outer guide tube, and leaves a circular channel between the two guide tubes for the insertion of the auxiliary positioning post. By adjusting the extension length of the auxiliary positioning post, the posture of the positioning guide tube can be freely adjusted, providing correct guidance for the subsequent insertion of the Kirschner wire. This solves the problem of the fixed structure of traditional Kirschner wire positioning devices, which can only find the appropriate positioning position by the doctor adjusting the posture, thus reducing the difficulty of positioning.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the Kirschner wire guiding and positioning device of the present invention;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the outer guide tube of the present invention;

[0024] Figure 3 This is a three-dimensional structural schematic diagram of the inner guide tube of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the auxiliary positioning column of the present invention.

[0026] In the picture:

[0027] Positioning guide tube 1, circular channel 10, outer guide tube 11, second arc-shaped groove 111, connecting slot 112, inner guide tube 12, insertion channel 120, first arc-shaped groove 121, connecting strip 122, auxiliary positioning post 2, annular groove 20, handle 3. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 4 As shown, this embodiment provides a Kirschner wire guiding and positioning device including: a positioning guide tube 1; the positioning guide tube 1 includes: an inner guide tube 12 and an outer guide tube 11 stacked together; after the inner guide tube 12 and the outer guide tube 11 are stacked together, a plurality of circular channels 10 are formed on their contact surfaces; a plurality of auxiliary positioning posts 2 are respectively inserted into the corresponding circular channels 10; wherein the fixed end faces of the inner guide tube 12 and the outer guide tube 11 are both inclined; and the auxiliary positioning posts 2 are adapted to extend out of the circular channels 10 by different lengths to fix the positioning guide tube 1 in different postures.

[0030] In this embodiment, traditional Kirschner wire positioning devices typically require the doctor to select a positioning point and manually adjust the device's orientation to find a suitable Kirschner wire insertion angle. Furthermore, the end face shape or tilt angle of traditional Kirschner wire positioning devices is fixed, while the affected areas of patients vary, making it difficult to find the correct orientation for the positioning device. In this embodiment, by using a freely extendable auxiliary positioning post 2, once the doctor has found a suitable insertion angle, the extension length of the auxiliary positioning post 2 can be adjusted to maintain the stable positioning of the positioning guide tube 1, facilitating subsequent Kirschner wire insertion.

[0031] In this embodiment, a plurality of first arc-shaped grooves 121 are provided on the outer side wall of the inner guide tube 12; a plurality of second arc-shaped grooves 111 are provided on the inner side wall of the outer guide tube 11; wherein the first arc-shaped grooves 121 and the second arc-shaped grooves 111 are aligned and fitted to form the circular channel 10; an insertion channel 120 is provided at the center of the inner guide tube 12 for inserting Kirschner wires.

[0032] In this embodiment, a connecting strip 122 for connecting with the outer guide tube 11 is also provided on the outer side wall of the inner guide tube 12; a corresponding connecting groove 112 is provided on the inner side wall of the outer guide tube 11; wherein the connecting strip 122 and the connecting groove 112 are both arranged between two adjacent circular channels 10.

[0033] In this embodiment, the inner guide tube 12, the outer guide tube 11, and the auxiliary positioning post 2 are all separately arranged. During use, they are assembled to form a guiding and positioning device. Specifically, during installation, the insertion posture of the inner guide tube 12 is first adjusted so that its connecting strip 122 is inserted into the second arc-shaped groove of the outer guide tube 11. When it corresponds to the position of the connecting slot 112, the inner guide tube 12 is rotated so that the connecting strip 122 is engaged in the connecting slot 112, thus realizing the connection between the inner guide tube 12 and the outer guide tube 11. Subsequently, the auxiliary positioning post 2 is inserted to complete the installation of the entire device. This method also helps to disassemble and disinfect the device after use, avoiding the cumbersome disinfection problem caused by the traditional complex setup with many dead angles.

[0034] In this embodiment, the auxiliary positioning post 2 is provided with a plurality of annular grooves 20 on its post body; the groove width of the annular groove 20 is adapted to the width of the connecting clip 122; wherein, after the auxiliary positioning post 2 has completed its extension and positioning, the connecting clip 122 is partially inserted into the annular groove 20 of the auxiliary positioning post 2 by rotating the inner guide tube 12, so as to limit and fix the auxiliary positioning post 2.

[0035] In this embodiment, the auxiliary positioning post 2 has several annular grooves 20 along its length. When each auxiliary positioning post 2 extends to a different length, the inner guide tube 12 is rotated so that the connecting strip 122 is partially engaged in the annular groove 20, thus fixing the auxiliary mounting post together and facilitating subsequent doctor's operation. The positioning guide tube 1 is also equipped with a handle, which is also convenient for the doctor to hold and operate.

[0036] On the other hand, the present invention also provides a positioning method using the above-mentioned Kirschner wire guiding and positioning device, comprising the following steps:

[0037] Step S1: Adjust the usage angle and position of the positioning guide tube 1;

[0038] Step S2: Adjust the extension length of the auxiliary positioning post 2 to position the positioning guide tube 1 in the usage posture;

[0039] Step S3: Rotate the outer guide tube 11 to limit and fix the auxiliary positioning post 2;

[0040] Step S4: Insert a Kirschner wire through insertion channel 120;

[0041] The method of rotating the outer guide tube 11 in step S3 to limit and fix the auxiliary positioning post 2 includes: after the auxiliary positioning post 2 has completed its extension and positioning, rotating the outer guide tube 11 causes the connecting strip 122 to partially engage in the annular groove 20 of the auxiliary positioning post 2, thereby limiting and fixing the auxiliary positioning post 2.

[0042] In summary, the Kirschner wire guiding and positioning device of the present invention sets the positioning guide tube 1 as a separate inner guide tube 12 and an outer guide tube 11, and leaves a circular channel 10 between the two guide tubes for the insertion of the auxiliary positioning post 2. By adjusting the extension length of the auxiliary positioning post 2, the posture of the positioning guide tube 1 can be freely adjusted, providing correct guidance for the subsequent insertion of Kirschner wires. This solves the problem of the fixed structure of traditional Kirschner wire positioning devices, which can only find the appropriate positioning position by the doctor adjusting the posture, thus reducing the difficulty of positioning.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A Kirschner wire guiding and positioning device, characterized in that, include: Positioning guide tube; The positioning guide tube includes: an inner guide tube and an outer guide tube that are stacked together; After the inner guide tube and the outer guide tube are stacked, several circular channels are formed on their contact surface. Several auxiliary positioning posts are inserted into the corresponding circular channels; among them The fixed end faces of both the inner guide tube and the outer guide tube are inclined; and The auxiliary positioning post is adapted to extend from the circular channel at different lengths to fix the positioning guide tube in different postures; A connecting strip for connecting with the outer guide tube is also provided on the outer side wall of the inner guide tube; The inner wall of the outer guide tube is provided with a corresponding connecting groove; wherein Both the connecting strip and the connecting slot are disposed between two adjacent circular channels; The auxiliary positioning column has several annular grooves on its body. The width of the annular groove is adapted to the width of the connecting strip; wherein After the auxiliary positioning post has extended and been positioned, the inner guide tube is rotated so that the connecting strip is engaged in the annular groove of the auxiliary positioning post, thereby limiting and fixing the auxiliary positioning post.

2. The guiding and positioning device as described in claim 1, characterized in that, The outer wall of the inner guide tube is provided with several first arc-shaped grooves; The inner wall of the outer guide tube is provided with several second arc-shaped grooves; wherein The first arc-shaped groove and the second arc-shaped groove are aligned and fitted together to form the circular channel.

3. The guiding and positioning device as described in claim 1, characterized in that, An insertion channel is provided at the center of the inner guide tube for inserting Kirschner wires.

4. The guiding and positioning device as described in claim 1, characterized in that, The positioning guide tube is also equipped with a handle.

Images