Combination device for femoral intertrochanteric osteotomy and using method thereof

Abstract

The invention discloses a combination device of intertrochanteric osteotomy and an application method of the combination device of intertrochanteric osteotomy. The combination device comprises a clamping embracing fixator, a cross connecting rod, a rotating embracing fixator and an arc-shaped guide plate. The clamping embracing fixator comprises an embracing arm A and a bolt. The embracing arm A comprises an arc-shaped arm and a straight line arm. A strip-shaped groove hole is formed in the arc-shaped arm. A through hole A perpendicular to a pin hole is formed in the straight line arm of the embracing arm A at the right side. The cross connecting rod comprises a cross rod, a steering head and a protractor. A through hole C is formed inside the cross rod, and the head end of the cross rod is provided with an outer thread matched with an inner thread of the through hole A. One end of the steering head is hinged to the cross rod, and the other end of the steering head is provided with a guide hole. The protractor is fixedly connected with one side of the cross rod. The middle of the arc-shaped guide is provided with a groove hole for arranging the clamping embracing fixator and the rotating embracing fixator in a sleeved mode. The combination device is simple in structure, convenient to use, and stable and safe to install, saves manpower and operative space, and enables osteotomy to be more precise.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and relates to a combination device for femoral intertrochanteric osteotomy, and also relates to a using method of the device. Background technique [0002] The pathological deformity of hip joint dislocation in children includes the acetabulum and femur. The pathological changes on the acetabular side include the opening direction of the acetabulum and the size and depth of the acetabulum. Deformity and abnormalities of the proximal neck-shaft angle and anteversion. During the operation of hip dislocation in children, it is often necessary to perform trochanteric osteotomy on the femur, so as to relieve the pressure on the femoral head, correct the neck-shaft angle and anteversion angle, and facilitate better restoration of the anastomosis of the head and socket. The current main method is to measure the neck-shaft angle and anteversion angle through preoperative imaging data (mainly ...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the surgical field during the operation, the level of the preoperative simulation plan cannot be reached, which affects the angle of osteotomy and the accuracy of the osteotomy plane.

Due to the small contact surface of the positioning pin device designed by the device manufacturer, displacement may occur during the operation, which on the one hand affects the accuracy of the operation, prolongs the operation time, increases the trauma and the bleeding of the patient; Patient's fluoroscopy radiation dose

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