Torsion replacement type caput femoris anti-collapse minimally invasive support ball rack

Abstract

The invention relates to the field of medical apparatus and instruments, in particular to a torsion replacement type caput femoris anti-collapse minimally invasive support ball rack. The torsion replacement type caput femoris anti-collapse minimally invasive support ball rack is composed of shaft end pieces, a torsion, a rotating shaft head, an insertion rod, anchor pieces, clamping grooves, a spring, a spring cavity, fixing rings, an arched piece, distance control ropes, distance control holes, shaft holes, a sleeve and anchor piece grooves. The rotating shaft head is in a cylindrical shape. One of the shaft end pieces is arranged at the upper end of the rotating shaft head and connected with the rotating shaft head into a whole. The right-hexagonal-prism-shaped insertion rod is arranged at the lower end of the rotating shaft head and connected with the rotating shaft head into a whole. The anchor grooves are formed in the side walls of the lower end of the insertion rod. Each anchor piece is arranged in each anchor piece groove. The upper end of each anchor piece extends from each anchor piece groove and rises upwards in an inclined mode. Compared with the prior art, the torsion replacement type caput femoris anti-collapse minimally invasive support ball rack can greatly shorten the size of a wound and reduce injuries on the wall of a bone inner cavity.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a torque-resetting femoral head anti-collapse minimally invasive support ball rack. Background technique [0002] In the prior art, when treating bone collapse caused by necrosis of the femoral head, it is necessary to implant a support member into the bone cavity. In the operation of implanting the support member into the bone cavity, minimally invasiveness is an important criterion for measuring the level of operation. However, the existing support members in this technical field, such as CN202235776, CN2699849, etc., all have a common defect: before the support members are implanted into the bone cavity, they cannot be deformed to reduce their size so as to pass through smaller wounds. Due to the existence of this defect, the installation operation of the existing femoral head support components will inevitably open a wound that is compatible with the minimum passing size of th...

AI Technical Summary

Problems solved by technology

However, the existing support members in this technical field, such as CN202235776, CN2699849, etc., all have a common defect: before the support member is implanted into the bone cavity, its size cannot be reduced by deformation, so as to pass through a smaller wound

Due to the existence of this defect, the installation operation of the existing femoral head support components will inevitably open an incision suitable for the minimum passing size of the support components, so the technical effect of "minimally invasive" cannot be achieved

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