Tibia proximal fixing device for knee replacement surgery

Abstract

The invention relates to the technical field of tibia fixing devices, and in particular relates to a tibia proximal fixing device for knee replacement surgery. The device includes a supporting steel plate and screws, the supporting steel plate is composed of a bone end supporting steel body, a backbone supporting steel body and an extension part, the bone end supporting steel body is provided witha first positioning hole, the backbone supporting steel body is provided with a second positioning hole, the bone end supporting steel body and the backbone supporting steel body are provided with screw holes, the outer end openings of the first positioning hole and the second positioning hole are provided with a positioning hole cap respectively, and the outer end opening of each screw hole is provided with a bolt hole cap. The device has the following beneficial effects: when the screws are connected with the supporting steel plate, the head end part of each screw is in fit connection withthe inner wall of each screw hole through a bolt, the supporting steel plate is connected and supported by the head end of each screw to make the supporting steel plate and the bone surface have no pressure effect, so that the wear of the steel plate on the surfaces of a tibia and a backbone is effectively reduced; and the supporting steel body is provided with the positioning hole caps and bolt hole caps, so that the surface of the supporting steel plate is smooth, and secondary damage to tissue by the head end of the bolt is avoided.

Description

technical field [0001] The invention relates to the technical field of tibial fixation devices, in particular to a tibial proximal end fixation device for knee joint replacement surgery. Background technique [0002] Total knee arthroplasty has become a common operation to solve severe knee joint lesions clinically, and is mainly used for severe knee joint pain, instability, and deformity. At present, clinicians support the use of the posterolateral approach of the knee joint to reduce the posterolateral fracture of the tibial plateau under direct vision. The use of the posterolateral approach allows the supporting plate to be placed directly behind the bone fragment according to the direction of the fracture line, so that the screw can be perpendicular to the bone fragment. The fracture line is implanted from the back inside to the outside, which can make the fracture block get the best reduction and fixation, and obtain stable rear support. [0003] Ordinary screws tradit...

AI Technical Summary

Problems solved by technology

[0003] The ordinary screws traditionally used for the support plate are extruded to the bone surface to generate preload and friction, which is likely to cause certain wear and tear damage to the tibial surface and secondary damage; after the screw is fixed to the support plate, the head of the screw or It is protruding on the surface of the supporting plate, or although it is embedded in the surface of the supporting plate, the uneven shape of the end of the bolt head is likely to cause abrasion damage to the tissue, which is not conducive to wound healing; because the length of the human tibia varies from person to person, the fixed size Size tibial fixation splints are not for everyone

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