External fixation bracket for correction of proximal joint deformity

Abstract

The invention discloses a proximal joint deformity correction external fixator. The proximal joint deformity correction external fixator comprises a fixing base, a swing base, a bone needle base unitand a driving mechanism, wherein the swing base can be in swing connection with the fixing base; the bone needle base unit can be slidably connected to the swing base; the driving mechanism is connected with the swing base and the bone needle base unit so as to drive the bone needle base unit to slide. The bone needle base unit comprises a bone needle base, a bone needle cover and a locking mechanism, wherein the bone needle base is provided with placement grooves used for placing bone needles; the locking mechanism locks the bone needle base and the bone needle cover so as to fixedly clamp the bone needles in the placement grooves through the bone needle base and the bone needle cover. The proximal joint deformity correction external fixator has the advantages that the bone needle base can be adjusted through swing and sliding, it is ensured that a patient is freely adjusted according to actual situations in surgery, the operation is simple, and the problem about malposition and offset of correction is effectively solved; the locking mechanism locks the bone needle base and the bone needle cover so as to fixedly clamp the bone needles on the placement grooves through the bone needle base and the bone needle cover, locking is firm and reliable, and convenience is brought to use.

Description

technical field [0001] The invention relates to a medical device, in particular to an external fixation bracket for correction of near-joint deformity. Background technique [0002] The current external fixation device for the treatment of angular deformities of the proximal joints, such as CN201968807U, a tubular external fixation frame with adjustable and micro-movement devices, consists of a back nut, a spring, a short shaft assembly, a locking screw, a long shaft assembly, a pad Composed of sheet, mandrel, and movable head assembly, the center of the back nut has a through hole, and the outer surface has texture and round holes; the left end of the locking screw has external threads and inner hexagonal holes, and the right end has steps; the left end of the mandrel has threads, and the right end has threads. Hole with two symmetrical longitudinal grooves at the right end. First, determine the surgical site, determine the depth and orientation of the bone needle implanta...

AI Technical Summary

Problems solved by technology

During use, it is easy to cause dislocation during correction and reduction, resulting in poor recovery of patients

Images