Olecranon osteotomy device

Abstract

An ulna olecranon osteotomy device comprises a base body connected with a bone structure. One end of the first guide plate is pivoted to the base body, and a first osteotomy groove is formed in the first guide plate; one end of the second guide plate is rotationally connected to the end, away from the base body, of the first guide plate, and a second osteotomy groove is formed in the second guide plate; a positioning hole is formed in the center of the angle adjusting device, and the angle adjusting device is pivoted with the two adjacent ends of the first guide plate and the second guide plate respectively, so that the angle between the first guide plate and the second guide plate is adjustable. In the application process, the osteotomy direction can be accurately controlled through the kirschner wire, the two sides of the kirschner wire are used in batches, a V-shaped structure can be cut out of the olecranon of the ulna, damage to the cartilage face of the olecranon and the joint face of the far end of the humerus is avoided, and fracture healing after osteotomy is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an ulna olecranon osteotome. Background Art

[0002] At present, complex cases of intercondylar and supracondylar comminuted fractures of the humerus are common in clinical practice, and the surgery is complicated, often requiring olecranon osteotomy. There are currently two methods for olecranon osteotomy, one is a thin chisel and the other is an electric saw. Both methods have their disadvantages. It is difficult to control the direction of osteotomy with a thin chisel, and the electric saw cannot control the direction and is prone to bone loss. Summary of the invention

[0003] In view of the shortcomings of the background technology, the object of the present invention is to provide an ulna olecranon osteotome.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An ulna olecranon osteotome, comprising

[0006] the matrix, which is connected to the bone structure;

[0007] A first guide plate, one end of which is pivotally connected to the base, and a first osteotomy groove is provided on the first guide plate;

[0008] a second guide plate, one end of which is rotatably connected to one end of the first guide plate away from the base, and a second osteotomy groove is provided on the second guide plate; and

[0009] The angle adjustment device has a positioning hole at its center, which is pivotally connected to the adjacent two ends of the first guide plate and the second guide plate, so that the angle between the first guide plate and the second guide plate can be adjusted.

[0010] Furthermore, the angle adjustment device comprises a circular disc, a positioning hole is provided at the center of the circular disc, and the positioning hole penetrates through two side surfaces of the circular disc.

[0011] Furthermore, a first connecting plate is extended from one end of the first guide plate, and a first rotating hole is provided on the first connecting plate; a second connecting plate is extended from one end of the second guide plate, and a second rotating hole is provided on the first connecting plate.

[0012] Furthermore, a cavity is opened in the disc, a rotating shaft is installed at the center position of the cavity, and the positioning hole is arranged on the rotating shaft.

[0013] Furthermore, the first connecting plate is pivotally connected to the rotating shaft via a first rotating hole; and the second connecting plate is pivotally connected to the rotating shaft via a second rotating hole.

[0014] Furthermore, an upward side of the disk is provided with angle scales equidistantly distributed around the circumference of the positioning hole.

[0015] Furthermore, the first guide plate has a plurality of first guide holes equidistantly distributed along the first osteotomy groove, and the plurality of first guide holes are equidistantly connected to the first osteotomy groove; the second guide plate has a plurality of second guide holes equidistantly distributed along the second osteotomy groove, and the plurality of second guide holes are equidistantly connected to the second osteotomy groove.

[0016] Furthermore, the positioning hole, the first guide hole and the second guide hole have the same diameter.

[0017] Furthermore, the base body comprises a main rod, one end of which is extended along its radial direction to be connected to a placement rod, and the placement rod is provided with a groove opening upward along its axial direction.

[0018] Furthermore, an armrest is extended along the radial direction of one end of the main rod away from the placement rod.

[0019] The beneficial effects of the present invention are:

[0020] 1. The ulnar olecranon osteotomy device proposed in the present invention can accurately control the osteotomy direction through the Kirschner wire, and the two sides thereof can be used in batches to cut a V-shaped structure of the ulnar olecranon, thereby avoiding damage to the olecranon cartilage surface and the distal humeral articular surface, and facilitating fracture healing after osteotomy.

[0021] 2. The ulna olecranon osteotome proposed by the present invention is rotatably connected to the base through the first guide plate, so that the position of the first guide plate relative to the base can be adjusted.

[0022] 3. The ulna olecranon osteotome proposed in the present invention has an angle adjustment device, which is arranged between the first guide plate and the second guide plate, so as to adjust the angle between the first guide plate and the second guide plate. The first guide plate and the second guide plate can rotate in the cavity, so as to make the position stability of the first guide plate and the second guide plate better.

[0023] 4. The present invention proposes an ulna olecranon osteotome, which performs osteotomy in a first osteotomy groove and a second osteotomy groove by a tool, and forms a first osteotomy surface and a second osteotomy surface with a preset angle. The first osteotomy surface and the second osteotomy surface form a V-shaped angle, thereby avoiding damage to the olecranon cartilage surface and the distal humeral articular surface, and is beneficial to fracture healing after osteotomy.

[0024] 5. The ulna olecranon osteotome proposed by the present invention protects the distal articular surface of the humerus, mainly the trochlear articular surface, from being damaged during osteotomy by providing grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of an ulna olecranon osteotome of the present invention;

[0027] Figure 2 A schematic diagram of a first guide plate of an ulna olecranon osteotome of the present invention;

[0028] Figure 3 A schematic diagram of a second guide plate of an ulna olecranon osteotome of the present invention;

[0029] Figure 4 It is a schematic diagram of an angle adjustment device of an ulna olecranon osteotome of the present invention.

[0030] In the figure, 10, base; 101, placement rod; 102, handrail; 103, groove; 20, first guide plate; 201, first osteotomy groove; 202, first guide hole; 203, first connecting plate; 204, rotating hole; 205, adjustment gap; 206, locking hole; 30, second guide plate; 301, second osteotomy groove; 302, second guide hole; 303, second connecting plate; 40, disc; 401, positioning hole; 402, rotating shaft; 403, angle scale; 2031, first rotating hole; 3031, second rotating hole. DETAILED DESCRIPTION

[0031] Combine the following Figure 1-4 The present invention is described in detail.

[0032] An ulna olecranon osteotome, such as Figure 1 As shown, it includes a base 10, which is connected to the bone structure; a first guide plate 20, one end of which is pivotally connected to the base 10, and a first osteotomy groove 201 is provided on the first guide plate 20; a second guide plate 30, one end of which is rotatably connected to an end of the first guide plate 20 away from the base 10, and a second osteotomy groove 301 is provided on the second guide plate 30; and an angle adjustment device, which is pivotally connected to adjacent ends of the first guide plate 20 and the second guide plate 30, respectively, and the angle adjustment device can adjust the angle between the first guide plate 20 and the second guide plate 30.

[0033] In this embodiment, if Figure 2 and Figure 3As shown, a first connecting plate 203 is extended from one end of the first guide plate 20 , and a first rotating hole 2031 is provided on the first connecting plate 203 ; a second connecting plate 303 is extended from one end of the second guide plate 30 , and a second rotating hole 3031 is provided on the first connecting plate 203 .

[0034] Specifically, a rotating plate is extended from one end of the first guide plate 20 away from the first connecting plate 203, and a rotating hole 204 is opened on the rotating plate. The first guide plate 20 is pivoted to the base 10 through the rotating hole 204. An adjustment gap 205 is penetrated through the rotating plate along the length direction of the first guide plate 20, and the adjustment gap 205 is connected to the rotating hole 204. Locking holes 206 are penetrated and perpendicular to the adjustment gap 205 on the opposite two sides of the rotating plate. The two locking holes 206 are coaxial and connected to the adjustment gap 205. The internal threads of the locking holes 206 are adapted to fasteners such as bolts. The size of the adjustment gap 205 is controlled by rotating the fastener, and then the aperture size of the rotating hole 204 is adjusted to fix the height position of the first guide plate 20 and the base 10. A plurality of annular grooves (not shown in the figure) adapted to the rotating holes 204 are evenly distributed along the axial direction on the outer side surface of the base 10. The first guide plate 20 is pivoted to different annular grooves to adjust the corresponding height.

[0035] In this embodiment, a cavity is formed in the disk 40, a rotating shaft 402 is installed at the center of the cavity, and a positioning hole 401 is provided on the rotating shaft 402. Furthermore, the first connecting plate 203 is pivotally connected to the rotating shaft 402 via a first rotating hole 2031; the second connecting plate 303 is pivotally connected to the rotating shaft 402 via a second rotating hole 3031.

[0036] In this embodiment, the upward side of the disk 40 is provided with angle scales 403 equidistantly distributed around the circumference of the positioning hole 401. The color of the scale surface of the disk 40 is set to be a white base with black scale lines inlaid.

[0037] In this embodiment, if Figure 2 and Figure 3 As shown, the first guide plate 20 has a plurality of first guide holes 202 equidistantly distributed along the first osteotomy groove 201, and the plurality of first guide holes 202 are equidistantly connected to the first osteotomy groove 201; the second guide plate 30 has a plurality of second guide holes 302 equidistantly distributed along the second osteotomy groove 301, and the second guide holes 302 of the first transmission member are equidistantly connected to the second osteotomy groove 301.

[0038] The guide plate is in the shape of a rectangular sheet, and an osteotomy groove for the osteotomy saw blade to pass through and a guide hole for placing a Kirschner wire are respectively penetrated through the upper end surface of the guide plate.

[0039] The first guide plate 20 and the second guide plate 30 are both provided with a plurality of guide holes at intervals. Preferably, the number of the first guide holes 202 is 4, and the number of the second guide holes 302 is 5. In other embodiments, the number can be set according to surgical requirements. When cutting the first osteotomy surface, the Kirschner wire can be selectively inserted into one of the plurality of first guide holes 202; when cutting the second osteotomy surface, the Kirschner wire can be selectively inserted into one of the plurality of second guide holes 302.

[0040] In this embodiment, the base 10 includes a main rod, one end of which is connected to a placement rod 101 extending in a radial direction thereof, and the placement rod 101 is provided with an upwardly opening groove 103 along its axial direction to protect the distal articular surface of the humerus, mainly the trochlear articular surface, from being damaged during osteotomy. Furthermore, an armrest 102 is extended in a radial direction at one end of the main rod away from the placement rod 101.

[0041] A first connecting plate 203 and a second connecting plate 303 are respectively provided on the end surfaces of the first guide plate 20 and the second guide plate 30 , and a first rotating hole 2031 and a second rotating hole 3031 are respectively provided through the edges of the first connecting plate 203 and the second connecting plate 303 .

[0042] This design can accurately control the direction of osteotomy, and its two sides can be used in batches to cut out a V-shaped structure in the olecranon, avoiding damage to the olecranon cartilage surface and the distal humeral articular surface, which is beneficial to fracture healing after osteotomy.

[0043] The present invention provides an ulna olecranon osteotome, and the method of using the same is as follows:

[0044] First, a reference plane is cut on the humerus, and the first guide plate 20 is fixed on the reference plane by passing a Kirschner wire through the first guide hole 202. A tool is used to perform osteotomy in the first osteotomy groove 201 to form a first osteotomy surface.

[0045] When it is necessary to fix by adjusting the angle of the second guide plate 30, the doctor first rotates the second guide plate 30 according to the above-described operation steps, and the second guide plate 30 rotates on the rotating shaft 402 through the second rotating hole 3031. At the same time, the rotating shaft 402 rotates the first pointer through the connecting shaft, and the second guide plate 30 and the first pointer rotate synchronously. By observing the angle between the first osteotomy groove 201 and the second osteotomy groove 301, and reading the angle between the rotated second guide plate 30 and the fixed first guide plate 20 through the corresponding degree label, the degree of the angle between the second guide plate 30 and the first guide plate 20 is conveniently read, which is convenient for the doctor to adjust the angle later.

[0046] Specifically, the second guide plate 30 can be fine-tuned, and the rotating shaft 402 rotates the second guide plate 30 through the second connecting plate 303, and the first guide plate 20 and the second guide plate 30 rotate at the angle with the axis of the disk 40 as the center until the states of the rotated first guide plate 20 and the second guide plate 30 are adapted to the subsequent surgical angle required by the doctor, and then the knob adjustment wheel is stopped, and the second guide plate 30 is fixed on the reference plane by passing the Kirschner wire through the second guide hole 302, and the tool is used to perform osteotomy in the second osteotomy groove 301 to form a second osteotomy surface, and the first osteotomy surface and the second osteotomy surface form a V-shaped angle, thereby effectively improving the convenience of subsequent surgery.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An ulna olecranon osteotome, characterized in that: include the matrix, which is connected to the bone structure; A first guide plate, one end of which is pivotally connected to the base, and a first osteotomy groove is provided on the first guide plate; a second guide plate, one end of which is rotatably connected to one end of the first guide plate away from the base, and a second osteotomy groove is provided on the second guide plate; as well as The angle adjustment device has a positioning hole at its center, which is pivotally connected to the adjacent two ends of the first guide plate and the second guide plate, so that the angle between the first guide plate and the second guide plate can be adjusted.

2. The ulna olecranon osteotome according to claim 1, characterized in that: The angle adjustment device comprises a disc, a positioning hole is arranged at the center of the disc, and the positioning hole penetrates through two side surfaces of the disc.

3. The ulna olecranon osteotome according to claim 2, characterized in that: A first connecting plate extends from one end of the first guide plate, and a first rotating hole is provided on the first connecting plate; a second connecting plate extends from one end of the second guide plate, and a second rotating hole is provided on the first connecting plate.

4. The ulna olecranon osteotome according to claim 3, characterized in that: A cavity is provided in the disc, a rotating shaft is installed at the center of the cavity, and the positioning hole is provided on the rotating shaft.

5. The ulna olecranon osteotome according to claim 4, characterized in that: The first connecting plate is pivotally connected to the rotating shaft via a first rotating hole; the second connecting plate is pivotally connected to the rotating shaft via a second rotating hole.

6. The ulna olecranon osteotome according to claim 4, characterized in that: The upward side of the disk is provided with angle scales equidistantly distributed around the circumference of the positioning hole.

7. The ulna olecranon osteotome according to claim 1, characterized in that: The first guide plate has a plurality of first guide holes equidistantly distributed along the first osteotomy groove, and the plurality of first guide holes are equidistantly connected to the first osteotomy groove; the second guide plate has a plurality of second guide holes equidistantly distributed along the second osteotomy groove, and the plurality of second guide holes are equidistantly connected to the second osteotomy groove.

8. The ulna olecranon osteotome according to claim 1, characterized in that: The positioning hole, the first guide hole and the second guide hole have the same aperture.

9. The ulna olecranon osteotome according to claim 1, characterized in that: The base body comprises a main rod, one end of which is extended along its radial direction to be connected with a placement rod, and the placement rod is provided with a groove opening upward along its axial direction.

10. The ulna olecranon osteotome according to claim 9, characterized in that: An end of the main rod away from the placement rod is provided with an armrest extending along the radial direction thereof.

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