Fe-Mn-Cu-C system alloy and medical application thereof

Abstract

The invention relates to the field of medical metal materials, in particular to an Fe-Mn-Cu-C system alloy and medical application thereof. The alloy comprises the components of, by weight, 10-35% ofMn, 0.2-5.0% of Cu, 0.2-1.5% of C, and the balance Fe. The feature that Fe corrodes in the human body environment and is biodegradable is used, the proper amount of Mn, Cu and C elements are added into the Fe, the Fe-Mn-Cu-C system alloy is prepared through casting and forging, and through the synergistic effect of the alloy elements, the mechanical property of the alloy and the corrosion rate ofthe alloy in the living organism environment can be improved, and the material has the various beneficial biological functions. The Fe-Mn-Cu-C system alloy having the mechanical property, degradationproperty and biological activity is especially suitable for implantation device materials in the medical field. Therefore, when products are designed, according to the different clinical applicability, the excellent properties of Fe-Mn-Cu-C materials are sufficiently given full play, and corresponding suture lines, anastomosis nails, cardiovascular stents, braided mesh supports and the like can beprepared.

Description

technical field [0001] The invention relates to the field of medical metal materials, in particular to an Fe-Mn-Cu-C alloy and its application as implantation device material in the medical field. Background technique [0002] Metal ultra-fine wires or tubes have important application value in the biomedical field, and can be used as materials such as sutures, staples, nerve guides, and stents. At present, there are the following main problems in the clinical application of biomedical metal materials: First, the existing metal materials that can be used as wires or scaffolds, such as titanium alloys, stainless steel, and Co-based alloys, are non-degradable and absorbable metal materials. , Long-term residence in the human body can easily lead to a series of adverse reactions such as body inflammation, delayed healing, sensitization, and carcinogenicity, and cause potential risk factors for patients. After the patient's tissue is repaired or healed, a second operation is req...

AI Technical Summary

Problems solved by technology

At present, there are the following main problems in the clinical application of biomedical metal materials: First, the existing metal materials that can be used as wires or scaffolds, such as titanium alloys, stainless steel, and Co-based alloys, are non-degradable and absorbable metal materials. , long-term residence in the human body can easily lead to a series of adverse reactions such as inflammation, delayed healing, sensitization, and carcinogenicity, and cause potential risk factors for patients

After the patient's tissue is repaired or healed, a second operation is required to remove it, which brings additional surgical risks, economic pressure and physical pain to the patient

Second, the existing implanted metal materials are all inert materials and have no biological activity. Even under the premise of strict aseptic operation and systemic preventive anti-inflammatory treatment, bacterial infection will still occur

Bacterial infection is usually difficult to control, recurrent, increases wound healing time, affects the effect of surgery, brings great physical and mental pain and heavy economic burden to patients and their families

Third, the existence of metal implants will cause metal artifacts in imaging observations, resulting in blurred effects in the corresponding areas, deformation of tissue structures, etc.

In addition, if the metal is magnetic, there are potential risks, such as: implant heating, displacement, etc.

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