A kind of fe-mn-cu-c alloy and its medical application

Abstract

The invention relates to the field of medical metal materials, in particular to a Fe-Mn-Cu-C alloy and its application. The composition and weight percentage of the alloy are: Mn 10-35wt.%, Cu 0.2-5.0wt.%, C 0.2-1.5wt.%, and the balance is Fe. The present invention utilizes the characteristic that Fe can be corroded and biodegradable in the human body environment, adds appropriate amount of Mn, Cu and C elements to Fe, and prepares a Fe-Mn-Cu-C alloy through casting and forging. The synergistic effect of the alloy can improve the mechanical properties of the alloy and the corrosion rate in the biological environment, and make the material have a variety of beneficial biological functions. The Fe-Mn-Cu-C alloy with mechanical properties, degradation properties and biological activity is especially suitable for implanted device materials in the medical field. Therefore, in product design, according to different clinical indications, the excellent properties of Fe‑Mn‑Cu‑C materials can be fully utilized to prepare corresponding sutures, staples, cardiovascular stents and mesh braided stents.

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 an implanted 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 sutures, staples, nerve catheters, stents and other materials. At present, the clinical application of biomedical metal materials in this aspect has the following main problems: First, the existing metal materials that can be used as wires or stents, such as titanium alloys, stainless steel, and Co-based alloys, are non-degradable and absorbable metal materials. , Long-term stay in the human body can easily lead to a series of adverse reactions such as body inflammation, delayed healing, sensitization, and carcinogenicity, causing potential risk factors for patients. When the tissue of the patient is repaired or healed, it needs to be removed b...

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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