CN219763474U - Femur distal end five-in-one osteotomy guide - Google Patents
Femur distal end five-in-one osteotomy guide Download PDFInfo
- Publication number
- CN219763474U CN219763474U CN202321152253.1U CN202321152253U CN219763474U CN 219763474 U CN219763474 U CN 219763474U CN 202321152253 U CN202321152253 U CN 202321152253U CN 219763474 U CN219763474 U CN 219763474U
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- osteotomy
- hole
- plate
- positioning
- femur
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 86
- 210000001694 thigh bone Anatomy 0.000 claims 3
- 239000008280 blood Substances 0.000 abstract description 2
- 210000004369 blood Anatomy 0.000 abstract description 2
- 210000000629 knee joint Anatomy 0.000 description 3
- 238000011883 total knee arthroplasty Methods 0.000 description 3
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 201000008482 osteoarthritis Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
The utility model discloses a femur distal end five-in-one osteotomy guider, which comprises a second positioning plate and a second osteotomy plate, wherein one end of the second positioning plate is connected with one end of the second osteotomy plate, two sides of the other end of the second osteotomy plate are respectively provided with a positioning arm, and each positioning arm is provided with a second positioning hole; the second locating plate is provided with a first locating hole and a femur distal end osteotomy hole, the femur distal end osteotomy hole is arranged at a position between the first locating hole and the second osteotomy plate, and the second osteotomy plate is sequentially provided with a femur front end osteotomy hole, an anterior oblique osteotomy hole, a posterior oblique osteotomy hole and a posterior condyle osteotomy opening in a direction away from the second locating plate. The femur distal end five-in-one osteotomy guide device can realize quick positioning, simplify operation steps, shorten operation steps, reduce operation time, reduce operation blood loss and help a patient to quickly recover after operation.
Description
Technical Field
The utility model relates to a femur distal end five-in-one osteotomy guide, and belongs to the technical field of medical instruments.
Background
Knee osteoarthritis is a common and frequently occurring disease, more than 50% of the elderly people aged 65 years old, and knee surface replacement is the final effective means for treating knee osteoarthritis, and for the worn surface of the distal femur, a doctor is required to resect the articular surface of the distal femur, and an artificial joint prosthesis is installed, so that the patient can stand again and walk normally.
As shown in fig. 1 and 2, the conventional osteotomy tool includes an insert rod 11, a first positioning plate 12, a first osteotomy plate 13, and a conventional four-in-one osteotomy guide plate 14 for distal femur, when distal femur osteotomies are performed in the conventional total knee arthroplasty, the distal femur anterior condyle, distal femur, posterior condyle, anterior superior and anterior inferior 5-directional osteotomies are required, the insert rod 11 is inserted into the femur a from the distal femur a, the first positioning plate 12 is positioned at the distal femur a, one end of the first osteotomy plate 13 is disposed on the first positioning plate 12, the first osteotomy plate 13 is fixed at the distal femur a through a fixing screw, the insert rod 11 and the first positioning plate 12 are removed, the distal femur a end face is osteotomized by inserting the osteotomy tool B into the osteotomy hole 131 of the first osteotomy plate 13, and then the conventional four-in-one osteotomy guide plate is fixed at the distal femur a end face, and the other positions of the distal femur a are osteotomies are performed.
At present, when the traditional total knee arthroplasty is performed and the traditional osteotomy instrument is used, the defects of difficult positioning, complicated operation steps, long time consumption, more bleeding in the operation, dependence on the operation experience of doctors and the like exist.
Disclosure of Invention
The utility model aims to solve the technical problems that: how to simplify the structure of the osteotomy device, thereby simplifying the operation steps, shortening the operation time and reducing the bleeding in the operation.
In order to solve the technical problems, the technical scheme of the utility model provides a femur distal end five-in-one osteotomy guide, which is characterized by comprising a second positioning plate and a second osteotomy plate, wherein one end of the second positioning plate is connected with one end of the second osteotomy plate, two sides of the other end of the second osteotomy plate are respectively provided with a positioning arm, and each positioning arm is provided with a second positioning hole; the second locating plate is provided with a first locating hole and a femur distal end osteotomy hole, the femur distal end osteotomy hole is arranged at a position between the first locating hole and the second osteotomy plate, and the second osteotomy plate is sequentially provided with a femur front end osteotomy hole, an anterior oblique osteotomy hole, a posterior oblique osteotomy hole and a posterior condyle osteotomy opening in a direction away from the second locating plate.
Preferably, the posterior condylar osteotomy opening and the femur front end osteotomy hole are respectively parallel to the second positioning plate; the direction of the through hole of the front oblique osteotomy hole is inclined from outside to inside to the osteotomy hole side at the front end of the femur, and the direction of the through hole of the rear oblique osteotomy hole is inclined from outside to inside to the posterior condylar osteotomy hole side.
Preferably, the second locating plate and the second osteotomy plate are perpendicular to each other.
Preferably, the posterior condylar osteotomy opening is formed in the posterior end face of the second osteotomy plate.
Preferably, the second osteotomy plate is provided with at least two femoral distal correction holes located between the anterior oblique osteotomy hole and the posterior oblique osteotomy hole.
Preferably, the position of the correcting hole at the distal femur is matched with the position of the correcting hole on the traditional four-in-one osteotomy guide plate at the distal femur.
Preferably, the second positioning plate is further provided with a positioning column, the positioning column is arranged at one end, far away from the second osteotomy plate, of the second positioning plate, the femur distal osteotomy hole is arranged at a position, close to the second osteotomy plate, of the second positioning plate, and the first positioning hole is arranged at a position between the femur distal osteotomy hole and the positioning column.
Preferably, the central axes of the femur distal end osteotomy hole, the positioning column and the first positioning hole are all perpendicular to the second positioning plate.
Preferably, the second positioning plate is divided into two parts, namely a block part and a rod part; one end of the rod-shaped part is connected with one end of the block-shaped part, the positioning column is fixed at the end part of the other end of the rod-shaped part, the first positioning hole is a through hole on the block-shaped part, the femur distal end osteotomy hole is arranged on the block-shaped part, and the other end of the block-shaped part is connected with one end of the second osteotomy plate.
When the distal femur osteotomy of the total knee arthroplasty is performed, the guide device is matched with the distal femur, the distal femur osteotomy can be completed through the osteotomy knife by fixing the guide device at one time.
The femur distal end five-in-one osteotomy guide device can realize quick positioning, simplify operation steps, shorten operation steps, reduce operation time, reduce operation blood loss and help a patient to quickly recover after operation.
Drawings
FIG. 1 is a schematic illustration of a prior art osteotomy of a distal femur;
FIG. 2 is a schematic illustration of an osteotomy using a conventional distal femur four-in-one osteotomy guide;
FIG. 3 is a right side view of a distal femur five-in-one osteotomy guide (with femur attached thereto);
FIG. 4 is a front view of a distal femur five-in-one osteotomy guide (with femur attached thereto);
fig. 5 is a top view of a five-in-one osteotomy guide for the distal femur (with the femur attached thereto).
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
The utility model provides a femur distal end five-in-one osteotomy guide, which is used for assisting femur distal end osteotomy to reconstruct knee joint when performing total knee joint replacement. As shown in fig. 3-5, it includes a second positioning plate 21 and a second osteotomy plate 22, with one end of the second positioning plate 21 being connected to one end of the second osteotomy plate 22 such that the second positioning plate 21 and the second osteotomy plate 22 are perpendicular to each other (the proximal end of the second positioning plate 21 is in contact with the anterior cortical resection of the femur). The two sides of the other end of the second osteotomy plate 22 are respectively provided with a positioning arm 221, each positioning arm 221 is provided with a second positioning hole 225, and the second positioning arms can be inserted into the femur a through the second positioning holes 225 by positioning screws for fixing the second osteotomy plate 22 on the femur a.
The second positioning plate 21 is provided with a femur distal end osteotomy hole 213, a positioning column 211 and a first positioning hole 212, the positioning column 211 is arranged at one end of the second positioning plate 21 far away from the second osteotomy plate 22, the femur distal end osteotomy hole 213 is arranged at a position on the second positioning plate 21 close to the second osteotomy plate 22, and the first positioning hole 212 is arranged at a position between the femur distal end osteotomy hole 213 and the positioning column 211. Wherein, the central axes of the femur distal end osteotomy hole 213, the positioning column 211 and the first positioning hole 212 are all perpendicular to the second positioning plate 21.
In this embodiment, the second positioning plate 21 is divided into two parts, a block part and a rod part. One end of the rod-shaped part is connected with one end of the block-shaped part, the positioning column 211 is fixed at the other end of the rod-shaped part, the first positioning hole 212 is a through hole on the block-shaped part, the femur distal end osteotomy hole 213 is arranged on the block-shaped part, and the other end of the block-shaped part is connected with one end of the second osteotomy plate 22.
The second osteotomy plate 22 is provided with a femur front end osteotomy hole 222, a front oblique osteotomy hole 223, a rear oblique osteotomy hole 224, and a rear condyle osteotomy opening 226 in sequence from front to back (toward a direction away from the second positioning plate 21), the rear condyle osteotomy opening 226 is provided on a rear end face (i.e., lower side in fig. 3) of the second osteotomy plate 22, and at least two femur distal correction holes 227 are provided on the second osteotomy plate 22 between the front oblique osteotomy hole 223 and the rear oblique osteotomy hole 224, which are matched with positions of correction holes on a conventional femur distal four-in-one osteotomy guide plate, so that a conventional instrument can be used for performing an operation in preparation for the second osteotomy plate 22 of the present utility model. The end face of the posterior condylar osteotomy opening 226 is parallel to the second positioning plate 21, and the front femur osteotomy hole 222 is a rectangular through hole parallel to the second positioning plate 21, i.e. the plane of the femur a after the osteotome B passes through the posterior condylar osteotomy opening 226 and the front femur osteotomy hole 222 respectively is parallel to the second positioning plate 21. The direction of the through hole of the anterior oblique osteotomy hole 223 is inclined from outside to inside toward the anterior end osteotomy hole 222 of the femur, and the direction of the through hole of the posterior oblique osteotomy hole 224 is inclined from outside to inside toward the posterior condylar osteotomy hole 226 (wherein the side closer to the femur a is the inside, and the side farther from the femur a is the outside). The line connecting the femoral distal correction holes 227 coincides with the medial and lateral condyle line.
And determining the thickness of the femur osteotomies according to a knee joint replacement measurement osteotomies method, and designing a femur distal end five-in-one osteotomies guider.
The femur distal end five-in-one osteotomy guide of the present utility model mates with the femur distal end and is secured by a lateral positioning arm 221 and a positioning screw in front of femur a.
The application process of the utility model is as follows:
when in use, the utility model is matched and attached with the distal end of the femur A to perform five-in-one osteotomy. The positioning post 211 is abutted against the front end of the femur a, and is fixed on the front end of the femur a through the first positioning hole 212 by using a positioning screw, and is fixed on both sides of the distal end of the femur a through the second positioning hole 225 by using another positioning screw. The osteotomy is first performed in the direction of the posterior condylar osteotomy opening 226 in the end face of the second osteotomy plate 22, and then in the direction of the posterior oblique osteotomy hole 224. When osteotomy is performed along the direction of the anterior femur osteotomy hole 222 and the anterior oblique osteotomy hole 223, the set screw in the first set hole 212 needs to be pulled out; when the bone is cut along the distal femur osteotomy hole 213, the set screw in the first positioning hole 212 is installed, and the set screw in the second positioning hole 225 is pulled out. In osteotomies, the osteotomies may be performed by a conventional pendulum saw or a reciprocating saw (i.e., osteotomy knife B).
Claims (9)
1. The femur distal end five-in-one osteotomy guider is characterized by comprising a second positioning plate (21) and a second osteotomy plate (22), wherein one end of the second positioning plate (21) is connected with one end of the second osteotomy plate (22), two sides of the other end of the second osteotomy plate (22) are respectively provided with a positioning arm (221), and each positioning arm (221) is provided with a second positioning hole (225); be equipped with first locating hole (212) and thighbone distal end osteotomy hole (213) on second locating plate (21), thighbone distal end osteotomy hole (213) are located the position between first locating hole (212) and second osteotomy plate (22), are equipped with thighbone front end osteotomy hole (222), preceding oblique osteotomy hole (223), back oblique osteotomy hole (224), back condyle osteotomy mouth (226) on second osteotomy plate (22) in proper order towards the direction of keeping away from second locating plate (21).
2. A femur distal five-in-one osteotomy guide as in claim 1, wherein the posterior condylar osteotomy opening (226) and the femur anterior osteotomy hole (222) are each parallel to the second locating plate (21); the direction of the through hole of the anterior oblique osteotomy hole (223) is inclined from outside to inside to the side of the anterior femur osteotomy hole (222), and the direction of the through hole of the posterior oblique osteotomy hole (224) is inclined from outside to inside to the side of the posterior condyle osteotomy hole (226).
3. A femur distal five-in-one osteotomy guide as in claim 1, wherein the second positioning plate (21) and the second osteotomy plate (22) are perpendicular to each other.
4. The femoral distal five-in-one osteotomy guide of claim 1, wherein the posterior condylar osteotomy opening (226) is provided in a posterior end face of the second osteotomy plate (22).
5. A femoral distal five-in-one osteotomy guide as in claim 1, wherein the second osteotomy plate (22) has at least two femoral distal correction holes (227) disposed therein between the anterior oblique osteotomy hole (223) and the posterior oblique osteotomy hole (224).
6. A femoral distal five-in-one osteotomy guide as in claim 5, wherein the femoral distal correction hole (227) is positioned to match the position of the correction hole in a conventional femoral distal four-in-one osteotomy guide.
7. The five-in-one osteotomy guide device for the distal femur of claim 1, wherein the second positioning plate (21) is further provided with a positioning post (211), the positioning post (211) is disposed at one end of the second positioning plate (21) away from the second osteotomy plate (22), the distal femur osteotomy hole (213) is disposed at a position on the second positioning plate (21) near the second osteotomy plate (22), and the first positioning hole (212) is disposed at a position between the distal femur osteotomy hole (213) and the positioning post (211).
8. The five-in-one osteotomy guide of claim 7, wherein the central axes of the distal femur osteotomy hole (213), the positioning post (211) and the first positioning hole (212) are perpendicular to the second positioning plate (21).
9. A distal femur five-in-one osteotomy guide as in claim 7, wherein said second positioning plate (21) is bifurcated into two portions, a block portion and a shaft portion; one end of the rod-shaped part is connected with one end of the block-shaped part, the positioning column (211) is fixed at the other end of the rod-shaped part, the first positioning hole (212) is a through hole on the block-shaped part, the femur distal end osteotomy hole (213) is arranged on the block-shaped part, and the other end of the block-shaped part is connected with one end of the second osteotomy plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152253.1U CN219763474U (en) | 2023-05-12 | 2023-05-12 | Femur distal end five-in-one osteotomy guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152253.1U CN219763474U (en) | 2023-05-12 | 2023-05-12 | Femur distal end five-in-one osteotomy guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219763474U true CN219763474U (en) | 2023-09-29 |
Family
ID=88133649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321152253.1U Active CN219763474U (en) | 2023-05-12 | 2023-05-12 | Femur distal end five-in-one osteotomy guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219763474U (en) |
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2023
- 2023-05-12 CN CN202321152253.1U patent/CN219763474U/en active Active
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| GR01 | Patent grant |