Three-fork type internal fixing device for treating femoral neck fracture

Abstract

The invention relates to the technical field of medical instruments, in particular to a three-fork type internal fixing device for treating femoral neck fracturs. The three-fork type internal fixing device comprises a side fixing plate, a first femoral neck locking screw, a second femoral neck locking screw, a third femoral neck locking screw and a femoral shaft fixing screw; the head end of the first femoral neck locking screw penetrates through a first threaded locking hole and then is fixed into the femoral head via the femoral neck; a first side hole and a second side hole are formed in the first femoral neck locking screw; and the head end of the second femoral neck locking screw sequentially penetrates through a second threaded locking hole and the first side hole and then is fixed into the femoral head via the femoral neck. The three-fork type internal fixing device is reasonable and compact in structure, the three femoral neck locking screws are mutually connected and locked, and the three femoral neck locking screws and the side fixing plate are locked to form a mechanically stable three-dimensional space structure, so that stress dispersion is uniform, and femoral head rotation, femoral neck collapse, introversion deformity, screw displacement and femoral head cutting can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to a trident internal fixation device for treating femoral neck fractures. Background technique [0002] Femoral neck fracture is a common type of fracture in clinical practice that occurs mostly in people with osteoporosis. The incidence of femoral neck fracture is high, accounting for about 3.6% of all fractures in the whole body. However, the multiple femoral neck locking screws in this method are independent of each other, and there is no restrictive relationship between the screws, so the screws are easy to shift. In addition, because the multiple femoral neck locking screws are in the upper and lower positions in the positional relationship, the multiple femoral neck locking screws Locking screws form a wedge shape similar to a small upper part and a larger lower part in the sagittal longitudinal plane, and the stress is mostly concentrated on the top of the wedge shape,...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a trident internal fixation device for treating femoral neck fractures, which overcomes the deficiencies of the prior art and can effectively solve the problem of femoral head rotation, femoral Problems with bone being cut, locking screws displaced

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