Unicondylar osteotomy guide plate and its positioning method
A technology of osteotomy and guide plate, applied in the direction of bone drill guidance, medical science, surgery, etc., can solve the problems of high cost, imperfect ligament protection measures, polyethylene liner wear and so on
Active Publication Date: 2021-07-27
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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Problems solved by technology
[0010] In order to solve the problem of intraoperative and short-term postoperative polyethylene liner dislocation and long-term postoperative aseptic loosening, polyethylene liner wear, and contralateral osteoarthritis in unicompartmental joint replacement technology caused by osteotomy and insufficient installation accuracy , periprosthetic fracture risk, and collateral ligament and cruciate ligament injuries caused by imperfect ligament protection measures, computer navigation technology is often used at present, but the cost is high and the penetration rate is not high
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[0030] The unicondylar osteotomy guide plate of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. The accompanying drawings are only used to explain the present invention and should not be construed as limiting the present invention.
[0031] Figure 1A , Figure 1B , Figure 1C with Figure 1D The fitting relationship between the femur drilling guide plate 1 and the femur in the unicondylar osteotomy guide plate of the present invention has been illustrated respectively from different spatial angles, as Figure 1A to Figure 1D As shown, the femoral drilling guide plate 1 provided by the present invention has a drilling guide limiting column 6 and a drilling guiding limiting column 7, and each drilling guiding limiting column has a drilling hole suitable for passing a limiting nail.
[0032] The femoral drilling guide plate 1 also has the femoral condyle distal positioning surface 3, the intercondylar fossa ...
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The invention relates to a unicondylar osteotomy guide plate, which is designed to cooperate with a cutting tool to realize quantitative unicondylar osteotomy of the knee joint. Unicondylar osteotomy guides include femoral drill guides and tibial osteotomy guides. The femoral drilling guide plate has: the positioning surface of the distal end of the femoral condyle, the positioning surface of the intercondylar fossa and the anterior femoral condyle, which are custom-designed through CT scan reconstruction and respectively fit the distal end of the femoral condyle, the intercondylar notch and the anterior condyle of the femur. The condyle positioning surface; the tibial osteotomy guide plate has: the tibial plateau positioning surface that fits the front side of the tibial plateau, which is customized and designed through CT scan reconstruction; the longitudinal osteotomy guide groove, which is suitable for cutting The tool is constrained in a longitudinal osteotomy plane extending longitudinally along the tibia; and a horizontal osteotomy stop adapted to constrain the cutting tool in a horizontal osteotomy plane extending transversely along the tibia. The invention also relates to a positioning method for the unicondylar osteotomy guide plate.
Description
technical field [0001] The invention relates to a unicondylar osteotomy guide plate, which is designed to cooperate with a cutting tool to realize quantitative osteotomy of the unicondyle of the knee joint. The invention also relates to a positioning method for the unicondylar osteotomy guide plate. Background technique [0002] With the continuous progress of unicompartmental arthroplasty (UKA), the concept of rapid recovery and the concept of "knee preservation" are put forward in clinical practice, and unicompartmental arthroplasty is more and more favored by Chinese orthopedic experts. [0003] Unicompartmental arthroplasty (UKA) has the advantages of less trauma, quick recovery, bone preservation, and good joint stability. It can preserve the patient's knee to the greatest extent without destroying the original proprioception and soft tissue balance system of the patient's knee joint. Joint movement function improves the patient's satisfaction with rehabilitation treat...
Claims
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IPC IPC(8): G06F17/00A61B17/17
CPCA61B17/1732A61B17/1764
Inventor 刘培来刘念杨友
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD