Medical bone nail for orthopedics department and preparation method thereof

Abstract

The invention discloses a medical bone nail for orthopedics department and a preparation method thereof. The bone nail comprises a core shaft and carbon fiber reinforced polyether-ether-ketone wrapping the core shaft, the core shaft of the bone nail is made of Ti6Al4V titanium alloy, the core shaft structurally comprises a nut and a screw rod, the screw comprises a rod head part, a rod middle part and a rod tail part, the carbon fiber reinforced polyether-ether-ketone wraps the outer part of the rod middle part, and the diameter of the rod middle part wrapped by the carbon fiber reinforced polyether-ether-ketone is consistent with that of the rod head part; wherein the rod tail part is one end, close to the nut, of the screw rod and is provided with at least four threads, and the rod head part is the other end of the screw rod. The medical bone nail has excellent biological tissue compatibility, not only solves a problem of degeneration of adjacent bones and joints caused by stress shielding after surgery, but also solves problems of chronic vertebral pain caused by bioelectric potential difference and degenerative diseases of adjacent bone segments caused by stress shielding after surgery adopting a traditional orthopedic titanium alloy bone nail.

Description

technical field [0001] The invention belongs to the technical field of medical value inserts, in particular to a medical orthopedic bone nail and a preparation method thereof. Background technique [0002] Lumbar degeneration is a physiological process that develops continuously with age. Studies have shown that individuals over the age of 20 have a tendency to degenerate their intervertebral discs, and even some individuals have obvious degeneration when they reach the age of 30, and cracks appear in the fibrous annulus. The intervertebral discs of individuals over the age of 30 all have degeneration. With age, excessive activities and overloaded loads accelerate the appearance of aging intervertebral discs in the lumbar spine. Lumbar fusion surgery is an important method for the treatment of middle and advanced lumbar degenerative diseases. It is widely used clinically because it can completely relieve nerve compression, rebuild spinal stability, and quickly relieve patie...

AI Technical Summary

Problems solved by technology

As a result, the increase in stiffness and the posterior shift of the instantaneous heart during the operation stage will aggravate the increase in the pressure on the adjacent segmental disc and synovial articular cartilage, which will become the main cause of adjacent segmental disc degeneration and synovial joint osteoarthritis. Etiology

[0004] After the titanium alloy vertebral nail is implanted in the body, the body fluid is an electrolyte, and the titanium alloy bone nail is a good electrical conductor, so a potential difference will be formed between the bone nail and the bone tissue, which is an important cause of postoperative chronic low back pain, long-term pain Reduced postoperative life comfort of patients

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