Multi-aperture titanium hollow metal bar (nail)

Abstract

The invention relates to an orthopedic surgery instrument, in particular to a multi-aperture titanium hollow metal bar (nail) for reconstruction of caput femoris necrosis, biomechanics support and medicine infusion treatment. The multi-aperture titanium hollow metal bar (nail) comprises a metal bar (nail) body and is characterized in that: the hollow titanium metal bar (nail) body is drilled with regular and even holes; the external thread end of the bar (nail) is provided with a transverse groove. As titanium metal is used, the invention has stable chemical performance, good adaptability of biological tissue, high intensity, no magnetism, light weight and no influence on X-ray irradiation; the thread shape is suitable for being fixed on sclerotin; the transverse groove is convenient for being placed in or taken out; hollow and multi-aperture design ensures the reasonable structure, is convenient for infusing medicine for many times, so that medicine can be permeated into the area of caput femoris necrosis to promote reconstruction of capillary net and improve the blood transportation to reconstruct necrosis bone. The invention can treat caput femoris necrosis conveniently, simply and effectively.

Description

technical field [0001] The invention relates to the technical field of orthopedic surgery materials, which is a porous titanium hollow metal rod (nail) capable of reconstructing femoral head necrosis, biomechanical support and drug infusion treatment. Background technique [0002] As we all know, the medical treatment of femoral head necrosis is nothing more than the following several options: (1) for avascular necrosis without femoral head collapse (stage I, stage II), generally take corresponding drugs to recover Blood supply, or take the method of surgical decompression or bone grafting, its effect is all not very ideal, often also requires the patient to avoid weight-bearing during treatment, do long-term bed rest, affect work and life; (2) for causing femoral head collapse (Patients with stage III and above are often treated with artificial joint replacement in medicine, which is unacceptable to many patients, and the economic burden is heavy; (3) memory alloy, trabecul...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the medical treatment of femoral head necrosis is nothing more than the following several options: (1) for avascular necrosis without femoral head collapse (stage I, stage II), generally take corresponding drugs to recover Blood supply, or take the method of surgical decompression or bone grafting, its effect is all not very ideal, often also requires the patient to avoid weight-bearing during treatment, do long-term bed rest, affect work and life; (2) for causing femoral head collapse (Patients with stage III and above are often treated with artificial joint replacement in medicine, which is unacceptable to many patients, and the economic burden is heavy; (3) memory alloy, trabecular metal reconstruction rod and general internal fixation nails, etc. , has its shortcomings, some cannot be taken out, some have no holes and cannot be injected twice, some are not long enough, cannot reach the subchondral of the femoral head or the product diameter is not suitable, and the insertion cannot achieve mechanical support. Not to mention multiple doses of treatment

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