Anti-infection medical stainless steel

Abstract

The invention relates to the field of stainless steel materials, in particular to medical anti-infection stainless steel. The stainless steel comprises the following chemical compositions in percentage by weight: less than or equal to 0.08 percent of C, less than or equal to 1.00 percent of Si, less than or equal to 2.00 percent of Mn, 8-16 percent of Ni, 16-20 percent of Cr, 3.0-5.0 percent of Cu, 0-4.0 percent of Mo and the balance of Fe. The content of impurity elements in steel is consistent with a corresponding requirement in a medical stainless steel national standard. After special thermal treatment on the stainless steel, bar-shaped or particulate copper-rich precipitated phases are uniformly dispersed and distributed in a stainless steel substrate, so that the stainless steel is endowed with an anti-bacterial-infection function. The medical anti-infection stainless steel has a unique anti-bacterial-infection function and can be widely applied to various stainless steel medical instruments used in the medical clinical fields of the department of orthopedics, the department of stomatology, cardiovascular brackets and the like; and the problems of bacterial infection and the like caused by medical instruments such as medical stainless steel and the like in the prior art are solved.

Description

technical field [0001] The invention relates to the field of stainless steel materials, in particular to a medical anti-infection stainless steel, which has a unique anti-bacterial infection function and can be widely used in various stainless steel medical devices used in medical clinical fields such as orthopedics, stomatology, and cardiovascular stents. Background technique [0002] Due to its excellent strength, toughness, bending fatigue resistance, good processing performance, and low cost, stainless steel is widely used in artificial joints (knees, knees, shoulders, ankles, elbows, wrists, knuckles, etc.), bone trauma products ( Intramedullary nails, steel plates, screws, etc.), spinal orthopedic internal fixation systems and other orthopedic implant products, as well as orthodontic products (brackets, rings, orthodontic archwires, implants for anchorage) and interventional cardiovascular stents Medical devices such as therapeutic device products. 316L, 317L, 304, et...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-infection medical stainless steel, which solves the problems of bacterial infection caused by medical instruments such as stainless steel used in traditional Chinese medicine in the prior art

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