Bone pulverizer for femoral head internal necrosis

Abstract

The invention discloses a bone pulverizer for femoral head internal necrosis, and belongs to the technical field of orthopedic medical instruments. The bone pulverizer is used for the pulverizing of internal necrotic bones of a femoral head. The bone pulverizer is characterized in that the lower end of a rotary rod is cooperatively connected with a clamping head of a hole-drilling drill, the upperpart of the rotary rod is fixedly sleeved with an upper fixing ring, the lower part of the rotary rod is fixedly sleeved with a lower push-pull ring, an inner hole of the lower push-pull ring is slidably matched with the outer wall of the rotary rod, a plurality of circular holes are uniformly formed in the circumference of the upper fixing ring, multiple elastic wire ropes wind the rotary rod, the upper ends of the elastic wire ropes are fixedly connected with the top of the rotary rod, and the lower ends of the multiple elastic wire ropes penetrate through the circular holes of the upper fixing ring respectively and are fixedly connected with the circumference of the lower push-pull ring. According to the bone pulverizer, the problems that necrotic bones of a femoral head are hard to betaken out and an iliac bone is damaged excessively are solved with the simplest structure, a novel technique is provided for the effective utilization of the necrotic bones of the femoral head, an extremely satisfied curative effect is obtained, and a new approach is provided for the treatment of the femoral head necrosis.

Description

Technical field [0001] The invention relates to a tool for pulverizing the internal necrotic bone of the femoral head in which femoral head necrosis has occurred, and belongs to the technical field of orthopedic medical instruments. Background technique [0002] Femoral head necrosis is a pathological evolution process, which initially occurs in the weight-bearing area of ​​the femoral head. Under stress, the necrotic bone trabecular structure is damaged, that is, the microfracture and the subsequent repair process for the damaged bone tissue. If the cause of osteonecrosis is not eliminated, repair is not perfect, and the process of injury-repair continues, it will cause structural changes in the femoral head, collapse and deformation of the femoral head, and cause joint inflammation and dysfunction. Femoral head necrosis certainly can cause pain, joint mobility and weight-bearing walking dysfunction, but after all, femoral head necrosis has limitations. It only affects individua...

AI Technical Summary

Problems solved by technology

However, this method is difficult to remove the necrotic bone, and the iliac bone is filled with autogenous iliac bone, which will cause great damage to the iliac bone.

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