Femoral head medullary core decompression surgery positioner and decompression method thereof

Abstract

The invention provides a femoral head medullary core decompression surgery positioner and a decompression method thereof. The positioner comprises a fixed guide cylinder part and a movable guide cylinder part, wherein the fixed guide cylinder part comprises a fixed guide plate and a fixed guide cylinder which is arranged on the fixed guide plate and is used for inserting three pre-guide needles; the movable guide cylinder part comprises a movable guide cylinder used for being inserted into a positioning guide pin, and the movable guide cylinder is movably arranged relative to the fixed guide cylinder part. According to positioning information provided by the three pre-guide needles, the position and the angle of the movable guide cylinder are changed, and a doctor can position a target necrosis area only by placing the positioning guide needles along the movable guide cylinder during an operation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a femoral head medullary core decompression operation positioner and a decompression method thereof. Background technique [0002] Femoral head necrosis is a common disease in orthopedic clinical diagnosis and treatment, and it is one of the main causes of hip joint disability in young adults. For 60%-80% of patients, it is difficult to achieve the reverse regeneration of femoral head necrosis itself through conservative treatment, and surgical intervention is required. Core decompression surgery is a major hip-preserving surgery for early necrosis of the femoral head. Through minimally invasive core decompression or combined necrotic bone debridement and bone grafting technology, it is expected to improve the blood supply of the femoral head and repair the bone. The necrotic area preserves the normal function of the femoral head. The current conventional core decompres...

AI Technical Summary

Problems solved by technology

Repeated X-ray fluoroscopy positioning increases the radiation damage of patients and operating doctors; sometimes even a skilled doctor can hardly locate the ideal target position despite repeated X-ray fluoroscopy and multiple Kirschner wire insertions

Inaccurate guide pin placement will lead to inadequate decompression of necrotic area and incomplete cleaning of necrotic bone, which will affect the effect of surgery

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