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Tibia bone marrow external force line adjusting device

An adjustment device and tibial marrow technology, which is applied in bone drill guidance, medical science, surgery, etc., can solve the problem that the tibial osteotomy guide cannot accurately fit and support the tibia, cannot meet the requirements of precise angles, and has different inclination angles, etc. problems, to achieve good kinematic alignment, ensure connection strength and connection stability, and increase accuracy

Active Publication Date: 2021-12-31
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual inclination angle of the tibia varies from patient to patient, and the traditional extramedullary force line positioning rod has a certain angle deviation relative to most tibias, which makes the tibial osteotomy guide not fully suitable for the inclination angle of most tibias, resulting in deviations in valgus and valgus angles. , so that the tibial osteotomy guide cannot accurately fit and support the tibia, and cannot meet the precise demand for angle in kinematic knee replacement surgery

Method used

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  • Tibia bone marrow external force line adjusting device
  • Tibia bone marrow external force line adjusting device
  • Tibia bone marrow external force line adjusting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The embodiment of the present application discloses a tibial extramedullary line of force adjustment device. refer to figure 1 , the adjustment device includes an ankle grip 1 and a telescopic rod 2, the ankle grip 1 is used to clamp the patient's ankle joint. The ankle-holding device 1 is connected to one end of the telescopic rod 2, and the end of the telescopic rod 2 away from the ankle-holding device 1 is connected to a bracket 3, and the end of the bracket 3 away from the telescopic rod 2 is connected to a tibial osteotomy guide 4, and the bracket 3 is connected to the telescopic rod 2 There is an adjustment assembly 5 connecting the two, and the adjustment assembly 5 is used to adjust the valgus and varus angle of the tibial osteotomy guide 4 .

[0057] refer to figure 1 and figure 2 , the ankle support device 1 includes a mounting base 11, a first clamping portion 12 and a second clamping portion 13, the first clamping portion 12 and the second clamping porti...

Embodiment 2

[0092] The difference from the first embodiment is that the end of the driving rod 532 away from the knob 531 is fixedly connected to the upper adjustment block 51 . When adjusting the upper adjustment block 51, first loosen the locking screw 533, turn the knob 531, the drive rod 532 rotates with the knob 531, the drive rod 532 swings in the moving hole 5211, and the drive rod 532 drives the upper adjustment block 51 to swing , the upper adjustment block 51 of the tibial osteotomy guide 4 swings, thereby adjusting the valgus and varus angle of the tibial osteotomy guide 4 . The driving rod 532 is fixed with the upper adjusting block, so that the driving rod 532 drives the upper adjusting block 51 to swing.

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Abstract

The invention relates to a tibia bone marrow external force line adjusting device, and belongs to the technical field of medical apparatus and instruments. The device comprises a tibia osteotomy guider, a telescopic rod and an ankle holding device, and further comprises an adjusting assembly. The adjusting assembly comprises an upper adjusting block and a lower adjusting block, one end of the upper adjusting block is connected with one end of the lower adjusting block, the upper adjusting block can swing on the lower adjusting block, the other end of the upper adjusting block is connected with the tibia osteotomy guider, and the other end of the lower adjusting block is connected with one end of the telescopic rod. The other end of the telescopic rod is connected with the ankle holding device. An adjusting part is arranged on the adjusting assembly and used for adjusting the rotating angle of the upper adjusting block relative to the lower adjusting block. The device has the effect of accurately adjusting the inward and outward turning angles of the tibia force line.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a tibial extramedullary line of force adjustment device. Background technique [0002] The tibial osteotomy guide is an important guiding and positioning device in the tibial osteotomy operation. Before the operation, it is necessary to align the tibial osteotomy guide with the osteotomy site to determine the osteotomy position. The varus and varus angle of the tibia refers to the anatomical proximal lateral angle of the tibia, that is, the angle formed by the axis of the upper shaft of the tibia and the tangent line of the tibial plateau (joint line) on the lateral side of the knee joint. The proximal tibia is the end of the tibia away from the ankle joint. [0003] In knee joint replacement surgery, the traditional extramedullary force line positioning rod can be used for tibial osteotomy positioning operation, and the tibial osteotomy guide can be positioned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/14A61B17/17
CPCA61B90/14A61B17/1732A61B17/1764A61B2017/564Y02A50/30
Inventor 郭盛杰赵永壮吕昌禹
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR