A split femoral osteotome for knee replacement

Abstract

The utility model discloses a split-type femoral osteotomy device for knee replacement, including a first osteotomy plate and a second osteotomy plate, wherein a bending portion is arranged on the top of the first osteotomy plate, a first horizontal portion is fixedly connected to the bending portion, a positioning plate is fixedly connected to the first horizontal portion, and a positioning column is fixedly installed on the bottom of the positioning plate. The utility model is provided with a first osteotomy plate, a second osteotomy plate, a first osteotomy guide groove, a second osteotomy guide groove and an oblique groove. When in use, the medical staff can first accurately position the first osteotomy plate as a whole at the distal end of the femur through the positioning column, and after fixation, perform preliminary osteotomy through the first osteotomy guide groove and the second osteotomy guide groove. After completion, the first osteotomy plate is removed, and the second osteotomy plate is tightly fitted on the two osteotomy surfaces just prepared for osteotomy and fixed, and then the osteotomy work is performed through the third osteotomy guide groove and the oblique groove. The utility model has the advantages of ensuring the accuracy of osteotomy surgery and ease of operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a split-type femoral osteotome for knee replacement. Background Art

[0002] With the continuous development of pet medical technology, canine knee replacement technology has become an important means of treating severe knee osteoarthritis. During the knee replacement surgery, medical staff need to use a knee replacement femoral osteotomy to locate the osteotomy area for osteotomy.

[0003] However, there are some problems with the existing technology: the traditional femoral osteotome for knee replacement is an integrated design, which is prone to problems such as inaccurate positioning, cumbersome operation steps, imprecise osteotomy and thermal damage to the osteotomy surface, thereby affecting the surgical accuracy and efficiency, and may lead to unsatisfactory postoperative results. Therefore, we propose a split femoral osteotome for knee replacement. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a split femoral osteotome for knee replacement. By setting the femoral osteotome for knee replacement in a split manner, the osteotome can be better positioned and fixed, thereby ensuring the accuracy and ease of operation of the osteotomy operation.

[0005] The utility model is implemented as follows: a split-type femoral osteotome for knee replacement comprises a first osteotomy plate and a second osteotomy plate, the first osteotomy plate is provided with a bending portion on the top, a first horizontal portion is fixedly connected to the bending portion, a positioning plate is fixedly connected to the first horizontal portion, a positioning column is fixedly installed on the bottom of the positioning plate, a first osteotomy guide groove is provided on the first osteotomy plate, a second osteotomy guide groove is provided on the first horizontal portion, a second horizontal portion is provided on the top of the second osteotomy plate, a third osteotomy guide groove is provided on the second osteotomy plate, and oblique grooves are provided on the second osteotomy plate and the second horizontal portion.

[0006] Optionally, the first osteotomy plate is provided with a first through hole below the first osteotomy guide groove, the top of the first horizontal portion is provided with a first top hole, the second osteotomy plate is provided with a second through hole, and the top of the second horizontal portion is provided with a second top hole.

[0007] Optionally, the top of the bending portion is flush with the top of the first horizontal portion, and a side hole is provided on the bending portion.

[0008] Optionally, circular holes are formed on the top of the positioning plate, and the circular holes are evenly distributed on the top of the positioning plate.

[0009] Optionally, the width of the positioning plate is greater than the width of the first horizontal portion, and the positioning plate has an arc-shaped appearance.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model provides a first osteotomy plate, a second osteotomy plate, a first osteotomy guide groove, a second osteotomy guide groove and an oblique groove. When in use, medical personnel can first accurately position the first osteotomy plate as a whole at the distal end of the femur through a positioning column. After fixation, preliminary osteotomy is performed through the first osteotomy guide groove and the second osteotomy guide groove. After completion, the first osteotomy plate is removed, the second osteotomy plate is tightly fitted on the two osteotomy surfaces just prepared for osteotomy and fixed, and then the osteotomy work is performed through the third osteotomy guide groove and the oblique groove, thereby ensuring the accuracy and ease of operation of the osteotomy operation.

[0012] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a first osteotomy plate provided by the utility model;

[0014] Figure 2 It is a front structural schematic diagram of the first osteotomy plate provided by the utility model;

[0015] Figure 3 It is a schematic diagram of the top structure of the first osteotomy plate provided by the utility model;

[0016] Figure 4 It is a side structural schematic diagram of the first osteotomy plate provided by the utility model;

[0017] Figure 5 It is a structural schematic diagram of a second osteotomy plate provided by the utility model;

[0018] Figure 6 It is a front cross-sectional structural schematic diagram of the second osteotomy plate provided by the utility model;

[0019] Figure 7 It is a side structural schematic diagram of the second osteotomy plate provided by the utility model.

[0020] In the figure: 1, first osteotomy plate; 2, second osteotomy plate; 3, first horizontal part; 4, positioning plate; 5, positioning column; 6, first osteotomy guide groove; 7, second osteotomy guide groove; 8, first through hole; 9, first top hole; 10, second horizontal part; 11, third osteotomy guide groove; 12, oblique groove; 13, second through hole; 14, second top hole; 15, side hole; 16, round hole; 17, bending part. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] like Figures 1 to 7 As shown, a split-type femoral osteotome for knee replacement provided by an embodiment of the utility model comprises a first osteotomy plate 1 and a second osteotomy plate 2, a bending portion 17 is provided on the top of the first osteotomy plate 1, a first horizontal portion 3 is fixedly connected to the bending portion 17, a positioning plate 4 is fixedly connected to the first horizontal portion 3, a positioning column 5 is fixedly installed on the bottom of the positioning plate 4, a first osteotomy guide groove 6 is provided on the first osteotomy plate 1, a second osteotomy guide groove 7 is provided on the first horizontal portion 3, a second horizontal portion 10 is provided on the top of the second osteotomy plate 2, a third osteotomy guide groove 11 is provided on the second osteotomy plate 2, and an oblique groove 12 is provided on the second osteotomy plate 2 and the second horizontal portion 10.

[0023] Furthermore, the first osteotomy plate 1 is provided with a first through hole 8 below the first osteotomy guide groove 6, the top of the first horizontal portion 3 is provided with a first top hole 9, the second osteotomy plate 2 is provided with a second through hole 13, and the top of the second horizontal portion 10 is provided with a second top hole 14.

[0024] Medical personnel can use steel nails to fix the first osteotomy plate 1 as a whole to the femur through the first through hole 8 and the first top hole 9 to ensure the overall stability of the first osteotomy plate 1 for osteotomy work; similarly, steel nails can be used to fix the second osteotomy plate 2 as a whole to the osteotomy surface of the femur through the second through hole 13 and the second top hole 14 to ensure the overall stability of the second osteotomy plate 2.

[0025] Furthermore, the top of the bending portion 17 is flush with the top of the first horizontal portion 3 , and a side hole 15 is formed on the bending portion 17 .

[0026] The design of the side hole 15 can not only reduce the overall weight of the first osteotomy plate 1, but also facilitate the flow of cooling water near the first osteotomy guide groove 6 and the second osteotomy guide groove 7 during osteotomy, thereby reducing thermal damage to the bones.

[0027] Furthermore, circular holes 16 are formed on the top of the positioning plate 4 , and the circular holes 16 are evenly distributed on the top of the positioning plate 4 .

[0028] The design of the round hole 16 makes it easier to add steel nails for fixation to improve the fixation effect.

[0029] Furthermore, the width of the positioning plate 4 is greater than the width of the first horizontal portion 3 , and the positioning plate 4 has an arc-shaped appearance.

[0030] The arc-shaped design of the positioning plate 4 can make the positioning plate 4 fit more closely to the surface of the femur, thereby facilitating the overall installation and fixation of the first osteotomy plate 1 .

[0031] The working principle and use process of this utility model:

[0032] During the operation, the medical staff can first accurately position the first osteotomy plate 1 as a whole at the distal end of the femur through the positioning column 5, and then use steel nails to fix the first osteotomy plate 1 as a whole on the femur through the first through hole 8 and the first top hole 9 to ensure the overall stability of the first osteotomy plate 1, and perform osteotomy at the first trochlear groove and the second distal end of the bilateral femoral condyles through the first osteotomy guide groove 6 and the second osteotomy guide groove 7. During the osteotomy process, cooling water can be introduced into the side hole 15 to reduce thermal damage to the bone. After completion, the first osteotomy plate 1 is removed, and then the second osteotomy plate 2 is tightly fitted on the two osteotomy surfaces just prepared by osteotomy. The second osteotomy plate 2 is also fixed as a whole through the second through hole 13 and the second top hole 14 using steel nails, and then the third osteotomy guide groove 11 and the oblique groove 12 are used to perform osteotomy at the posterior side of the bilateral femoral condyles and the fourth osteotomy at a forty-five degree angle, thereby ensuring the accuracy and ease of operation of the osteotomy operation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split-type femoral osteotome for knee replacement, comprising a first osteotomy plate (1) and a second osteotomy plate (2), characterized in that: The first osteotomy plate (1) is provided with a bending portion (17) at the top, the bending portion (17) is fixedly connected to a first horizontal portion (3), the first horizontal portion (3) is fixedly connected to a positioning plate (4), the bottom of the positioning plate (4) is fixedly mounted with a positioning column (5), the first osteotomy plate (1) is provided with a first osteotomy guide groove (6), the first horizontal portion (3) is provided with a second osteotomy guide groove (7), the second osteotomy plate (2) is provided with a second horizontal portion (10) at the top, the second osteotomy plate (2) is provided with a rear third osteotomy guide groove (11), and the second osteotomy plate (2) and the second horizontal portion (10) are both provided with an oblique groove (12).

2. A split-type femoral osteotome for knee replacement according to claim 1, characterized in that: The first osteotomy plate (1) is provided with a first through hole (8) located below the first osteotomy guide groove (6), the top of the first horizontal portion (3) is provided with a first top hole (9), the second osteotomy plate (2) is provided with a second through hole (13), and the top of the second horizontal portion (10) is provided with a second top hole (14).

3. A split-type femoral osteotome for knee replacement according to claim 1, characterized in that: The top of the bent portion (17) is flush with the top of the first horizontal portion (3), and a side hole (15) is provided on the bent portion (17).

4. A split-type femoral osteotome for knee replacement according to claim 1, characterized in that: The top of the positioning plate (4) is provided with round holes (16), and the round holes (16) are evenly distributed on the top of the positioning plate (4).

5. The split-type femoral osteotome for knee replacement according to claim 1, characterized in that: The width of the positioning plate (4) is greater than the width of the first horizontal portion (3), and the positioning plate (4) has an arc-shaped appearance.

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