CN210056355U - Knee joint rotation force line measuring device - Google Patents
Knee joint rotation force line measuring device Download PDFInfo
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- CN210056355U CN210056355U CN201821274609.8U CN201821274609U CN210056355U CN 210056355 U CN210056355 U CN 210056355U CN 201821274609 U CN201821274609 U CN 201821274609U CN 210056355 U CN210056355 U CN 210056355U
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- knee joint
- pressure sensor
- force line
- rotation force
- measuring device
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Abstract
The utility model discloses a knee joint rotation force line measuring device, comprising a base plate, the bottom plate is provided with two sets of pressure sensor with knee joint femoral head department of correspondence, pressure sensor is array pressure sensor. The utility model discloses a array pressure sensor will when cutting the bone the utility model discloses knee joint department is inserted to the device, when can accurately measure the knee joint activity through array pressure sensor, the movement track of relative femoral head to can the accurate measurement go out the femoral prosthesis rotation line, very convenient, swift, greatly guaranteed the success rate of knee joint replacement operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a knee joint rotation force line measuring device.
Background
The knee joint is the multiaxial motion joint with the most complicated human anatomy, and with the coming of the aging of China's society, the number of patients with knee joint diseases is increasing. Currently, artificial knee joint replacement is a common clinical means for treating various advanced complex knee joint diseases, and has good effect. However, as the surgery is widely performed, the problems caused by the surgery are increasing. The incidence rate of patellofemoral joint complications after total knee replacement is reported to be 1.5% -12%, accounting for 50% of the causes of artificial knee revision, and becoming one of the most common causes of knee revision. The accurate rotating force line of the femoral prosthesis is reconstructed in the total knee replacement, and the method has important significance for improving the excellent rate of the operation and prolonging the service life of the prosthesis.
Accurately determining the alignment of femoral rotation and correctly cutting bone, placing prosthesis becomes a key factor for the success of the operation. The rotational position of the femoral prosthesis mainly affects two major aspects of the flexion gap balance in the artificial joint replacement operation and the patella track after the operation. If the rotation force line of the femoral prosthesis is poor, the patient can cause the abnormal joint kinematics and biomechanics when doing knee bending movement, which is one of the reasons for poor curative effect after operation. At present, the alignment of the rotation of the femur is determined by the gap balancing method and the osteotomy measurement method, the common femoral epicondylium (TEA) is used as the reference axis for the rotation positioning of the femoral prosthesis, but how to position TEA and TEA has advantages over other axes for the rotation positioning, whether the 3-degree external rotation of the femoral prosthesis is appropriate for all patients is unified, whether the accuracy of the rotation force line of the femoral prosthesis can be improved by the combined application of the gap balancing method and a plurality of anatomical axes is still controversial, and an effective reference standard is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that just not enough to above-mentioned background art provides a knee joint rotation force line measuring device, can make things convenient for, swift measure thighbone prosthesis rotation force line.
In order to solve the technical problem, the utility model provides a pair of knee joint rotation force line measuring device, comprising a base plate, the bottom plate is provided with two sets of pressure sensor with knee joint femoral head department of correspondence, pressure sensor is array pressure sensor.
In the above technical solution, the pressure sensor is composed of a plurality of pressure sensors distributed in a matrix.
In the technical scheme, the spacing distance of the pressure sensors is 1-5 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses a array pressure sensor will when cutting the bone the utility model discloses knee joint department is inserted to the device, when can accurately measure the knee joint activity through array pressure sensor, the movement track of relative femoral head to can the accurate measurement go out the femoral prosthesis rotation line, very convenient, swift, greatly guaranteed the success rate of knee joint replacement operation.
Drawings
Fig. 1 is a schematic structural diagram of the device of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the utility model discloses a knee joint rotation force line measuring device, comprising a base plate 1, bottom plate 1 is provided with two sets of pressure sensor 2 with knee joint femoral head department of correspondence, pressure sensor 2 is array pressure sensor. The pressure sensor 2 may be composed of a plurality of pressure sensors 3 distributed in a matrix. The spacing distance of the pressure sensors is preferably 1-5 mm.
When in use, the device is inserted into the knee joint needing osteotomy, so that the femoral head is positioned at the pressure sensor 2. Then the knee joint is moved, at the moment, the pressure sensor 2 can accurately measure the moving track of the knee joint through the pressure sensors 3 distributed in an array manner, and therefore the rotating force line of the femoral prosthesis can be obtained. And placing the prosthesis according to the rotation force line of the femoral prosthesis, and finishing the operation.
The core of the utility model is to utilize two sets of array pressure sensor, acquire the movement track through above-mentioned array pressure sensor when the knee joint activity to obtain femoral prosthesis rotation force line, consequently, the utility model discloses a protection scope is not only limited to above-mentioned embodiment the utility model discloses on the basis of principle, any change or the deformation that utilizes above-mentioned mechanism all belong to the utility model discloses a protection scope.
Claims (3)
1. A knee joint rotation force line measuring device, includes bottom plate (1), its characterized in that: two groups of pressure sensors (2) are arranged at the corresponding positions of the bottom plate (1) and the femoral head of the knee joint, and the pressure sensors (2) are array type pressure sensors.
2. The knee joint rotation force line measuring device according to claim 1, characterized in that: the pressure sensor (2) is composed of a plurality of pressure sensors (3) distributed in a matrix.
3. The knee joint rotation force line measuring device according to claim 2, characterized in that: the spacing distance of the pressure sensors (3) is 1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274609.8U CN210056355U (en) | 2018-08-08 | 2018-08-08 | Knee joint rotation force line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274609.8U CN210056355U (en) | 2018-08-08 | 2018-08-08 | Knee joint rotation force line measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210056355U true CN210056355U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821274609.8U Active CN210056355U (en) | 2018-08-08 | 2018-08-08 | Knee joint rotation force line measuring device |
Country Status (1)
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| CN (1) | CN210056355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113116353A (en) * | 2021-04-06 | 2021-07-16 | 元化智能科技(深圳)有限公司 | Pressure measurement system and pressure measurement method for knee joint replacement surgery |
-
2018
- 2018-08-08 CN CN201821274609.8U patent/CN210056355U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113116353A (en) * | 2021-04-06 | 2021-07-16 | 元化智能科技(深圳)有限公司 | Pressure measurement system and pressure measurement method for knee joint replacement surgery |
| CN113116353B (en) * | 2021-04-06 | 2022-03-22 | 骨圣元化机器人(深圳)有限公司 | Pressure measurement system and pressure measurement method for knee joint replacement surgery |
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