CN211381607U - Artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device - Google Patents
Artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device Download PDFInfo
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- CN211381607U CN211381607U CN201921964864.XU CN201921964864U CN211381607U CN 211381607 U CN211381607 U CN 211381607U CN 201921964864 U CN201921964864 U CN 201921964864U CN 211381607 U CN211381607 U CN 211381607U
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- steel plate
- total knee
- knee arthroplasty
- anterior condyle
- artificial total
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Abstract
The utility model provides a guiding device for artificial total knee replacement femoral anterior condyle osteotomy, which can guide the completion of correct osteotomy and avoid the excessive or too little osteotomy of the femoral anterior condyle. The utility model relates to a technical scheme that artifical total knee arthroplasty thighbone anterior condyle cuts bone guider includes: the novel steel plate rack comprises a foot seat, a scale plate, a first steel plate, a second steel plate, a hollow screw and a spring, wherein the scale plate can be installed on the foot seat in a swinging mode, the second steel plate is fixed on the scale plate, the first steel plate is located above the second steel plate and the two steel plates pass through the hollow screw to be connected, and two ends of the spring are respectively abutted against the first steel plate and the second steel plate.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to artificial total knee arthroplasty thighbone anterior condyle osteotomy guider.
Background
If the femoral side osteotomy of a patient in the total knee arthroplasty is inaccurate after operation, cortical bone osteotomies with different degrees are too much or not enough, incisional marks can be generated too much, and patella packing can be caused too little. The incidence of notches ranges from 0.5% to 52%, even though computer-aided navigation does not reduce the incidence of notches.
Biomechanical studies show that: after the cortical bone is incised, the flexural and torsional strength of the femur decreases by 18% and 42% on average. The femoral incisional track is larger than 3mm, so that the fracture risk is high, the fracture can cause the failure of the prosthesis after the artificial knee joint replacement, and the operation needs to be performed again. Too little osteotomy results in increased anterior condylar eccentricity, leading to patellar packing, and there is a significant correlation reported in the literature with poor postoperative knee pain and functional scoring.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough and inaccuracy of present artifical total knee arthroplasty osteotomy method, the utility model provides an artifical total knee arthroplasty thighbone anterior condyle cuts bone guider can guide to accomplish correct osteotomy, avoids thighbone anterior condyle to cut bone too much or too little.
The utility model relates to a technical scheme that artifical total knee arthroplasty thighbone anterior condyle cuts bone guider includes:
the novel steel plate rack comprises a foot seat, a scale plate, a first steel plate, a second steel plate, a hollow screw and a spring, wherein the scale plate can be installed on the foot seat in a swinging mode, the second steel plate is fixed on the scale plate, the first steel plate is located above the second steel plate and the two steel plates pass through the hollow screw to be connected, and two ends of the spring are respectively abutted against the first steel plate and the second steel plate.
Preferably, in the technical scheme of the artificial total knee arthroplasty femoral anterior condyle osteotomy guide device, the foot seat comprises two supporting feet, and an included angle is formed between the two supporting feet.
Preferably, in the technical scheme of the artificial total knee replacement femoral anterior condyle osteotomy guide device, the scale plate is swingably mounted on the two support legs, and a dial is arranged in an area where the scale plate is connected with each support leg.
Preferably, in the technical scheme of the artificial total knee arthroplasty femoral anterior condyle osteotomy guide device, the number of the springs is two, and two ends of the two springs respectively abut against the bottom surface of the first steel plate and the top surface of the second steel plate.
Preferably, in the above technical solution of the artificial total knee arthroplasty femoral anterior condyle osteotomy guide, the hollow screw is located between the two springs.
Preferably, in the above technical solution of the artificial total knee arthroplasty femoral anterior condyle osteotomy guide, the spring is parallel to and vertically disposed with the hollow screw.
Preferably, in the technical solution of the artificial total knee arthroplasty femoral anterior condyle osteotomy guide, a top surface of the first steel plate is a slope.
Compared with the prior anterior reference or posterior reference technology used in the artificial knee joint replacement, the utility model does not solve the problem of excessive or insufficient femur side osteotomy, and the utility model can thoroughly solve the problems, for example, the utility model is designed into two steel plates with adjustable distance, the distance between the first steel plate and the second steel plate can be adjusted, the size of femur dissection of different patients is satisfied, and accurate osteotomy is achieved; for another example, the scale plate can swing relative to the foot base, and the adjustable external rotation osteotomy angle of the femur is controlled to be 3-7 degrees so as to meet the anatomical difference of the femurs of different patients and avoid errors.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts;
fig. 1 is an overall structure diagram of the femoral anterior condyle osteotomy guiding device in the artificial total knee arthroplasty of the present invention.
Detailed Description
The utility model provides a guiding device for artificial total knee replacement femoral anterior condyle osteotomy, which can guide the completion of correct osteotomy and avoid the excessive or too little osteotomy of the femoral anterior condyle.
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses artifical total knee arthroplasty thighbone anterior condyle cuts bone guider includes a foot stool, a scale plate, two steel sheets, two springs, one piece of cavity screw.
As shown in fig. 1, the foot base includes two supporting legs 6, an included angle is formed between the two supporting legs 6, and the two supporting legs 6 can be arranged in an inverted V shape.
The scale plate 5 is movably arranged on the foot seat, and the scale plate 5 can swing relative to the foot seat.
As shown in fig. 1, the scale plate 5 is mounted on two supporting legs 6, and a dial is provided in a region where the scale plate 5 is connected to each supporting leg 6, and the angle variation range of the dial is 3 ° to 7 °.
The second steel plate 2 is fixed on the scale plate 5, and the first steel plate 1 is positioned above the second steel plate 2, and the distance between the first steel plate and the second steel plate is adjustable.
Specifically, the first steel plate 1 and the second steel plate 2 are connected through a hollow screw 4, and the two springs 3 are respectively abutted against the bottom surface of the first steel plate 1 and the top surface of the second steel plate 2. As shown in fig. 1, the hollow screw 4 and the two springs 3 are both vertically disposed, and the hollow screw 4 is located between the two springs 3. When the spring 3 is in an initial state, the distance between the first steel plate 1 and the second steel plate 2 is the largest, and when the spring 3 is in a compressed state, the distance between the first steel plate 1 and the second steel plate 2 is reduced.
The upper surface of the steel plate 1 is an inclined surface.
The working principle of the artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device is as follows:
firstly, the supporting legs of the foot seats are used for being clamped into gaps of knee joints, after the artificial total knee replacement femoral anterior condyle osteotomy guide device is installed, the supporting legs are fixed on a femur which is subjected to distal osteotomy through a Kirschner wire, the pre-osteotomy of the femoral anterior condyle surface is completed, if the osteotomy is too little, the distance between the first steel plate and the second steel plate is adjusted by screwing the hollow screw, and the osteotomy is performed again until the spacing is proper, so that the accurate osteotomy is achieved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. The utility model provides an artificial total knee arthroplasty thighbone anterior condyle cuts bone guider, its characterized in that, includes foot rest, scale plate, steel sheet one, steel sheet two, cavity screw and spring, but the scale plate wobbling is installed on the foot rest, steel sheet two is fixed on the scale plate, steel sheet one is located two tops of steel sheet and both pass through cavity screw connects, the both ends of spring support respectively and lean on steel sheet one with on the steel sheet two.
2. The artificial total knee arthroplasty femoral anterior condyle osteotomy guide of claim 1, wherein the foot base comprises two support legs, the two support legs having an included angle therebetween.
3. The artificial total knee arthroplasty femoral anterior condyle osteotomy guide of claim 2, wherein the scale plate is pivotally mounted to both of the support legs, and a dial is provided in an area of the scale plate connected to each of the support legs.
4. The artificial total knee arthroplasty femoral anterior condyle osteotomy guide of claim 1, wherein said number of said springs is two, and both ends of said two springs abut against a bottom surface of said first steel plate and a top surface of said second steel plate, respectively.
5. The artificial total knee arthroplasty femoral anterior condyle resection guide of claim 4, wherein the hollow screw is located between the two springs.
6. The artificial total knee arthroplasty femoral anterior condyle resection guide of claim 5, wherein the spring is disposed parallel to and vertically from the hollow screw.
7. The artificial total knee arthroplasty femoral anterior condyle osteotomy guide of claim 1, wherein a top surface of the first steel plate is beveled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964864.XU CN211381607U (en) | 2019-11-14 | 2019-11-14 | Artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964864.XU CN211381607U (en) | 2019-11-14 | 2019-11-14 | Artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211381607U true CN211381607U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921964864.XU Active CN211381607U (en) | 2019-11-14 | 2019-11-14 | Artificial total knee arthroplasty femoral anterior condyle osteotomy guiding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211381607U (en) |
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2019
- 2019-11-14 CN CN201921964864.XU patent/CN211381607U/en active Active
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