Tibial plateau fracture pressurizing and fixing device

Abstract

The invention discloses a tibial plateau fracture pressurizing and fixing device, and belongs to the technical field of medical apparatuses and instruments in the orthopedic department. The tibial plateau fracture pressurizing and fixing device is used for pressurizing and fixing a tibial plateau fracture accompanied by fracture piece separation. According to the technical scheme, a fixing steel plate and a pressurizing steel plate are located on the two sides of a tibial plateau respectively, and a pressurizing screw penetrates through the fixing steel plate, the tibial plateau and the pressurizing steel plate to be pressurized and fixed through a nut so that the tibial plateau can be fixedly connected with a fracture piece. Two circular grooves are formed in the pressurizing steel plate, a through hole is formed in the center of each circular groove, an adjusting piece is embedded in each circular groove, and a long groove is formed in each adjusting piece. The area of the pressurizing steel plate is far larger than that of an ordinary nut, and the damage caused by stress concentration to bone cortex is avoided; the long grooves of the adjusting pieces are quite conveniently aligned with the pressurizing screw, the requirement for built-in precision of the pressurizing screw is lowered a surgery incision can be quite easily reduced, and the operation process is accelerated. The defects of various existing conventional methods are overcome, the surgery effect is greatly improved, and the tibial plateau fracture pressurizing and fixing device is suitable for being applied to minimally invasive surgery.

Description

technical field [0001] The invention relates to a tibial plateau fracture pressure fixation device accompanied by separation of fracture fragments, and belongs to the technical field of orthopedic medical devices. Background technique [0002] Tibial plateau fractures with separation and displacement of fracture fragments are often encountered in clinical work (Schatzker types I, II, IV, V, and VI may all occur), and the purpose of surgical treatment is to fully reduce the fracture fragments and restore the knee joint. Axial alignment and articular surface smoothing, reconstruction of knee joint function. At present, there are several internal fixation methods for tibial plateau fractures: compression bolt fixation, lag screw fixation, compression bolt combined with plate fixation, lag screw combined with plate fixation, locking screw combined with plate fixation, etc. For most types of plateau fractures, compression bolts and plates can be used for fixation. However, d...

AI Technical Summary

Problems solved by technology

For most types of plateau fractures, compression bolts and plates can be used for fixation. However, due to the small contact area between the nut side of the compression bolt and the tibial plateau and the stress concentration, the cortical bone on the nut side is likely to be damaged during the bolt compression process, and the nut sinks into the bone. Moderate, the compression effect on the fracture fragment is weakened, and the risk of redisplacement after operation is high

Lag screws are used in conjunction with the use of plates. For patients with bilateral plateau fractures with displacement, bilateral plate fixation is often required, which enlarges th...

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