Surface treatment method for material nickel-titanium alloy for left aurcle plugging device

• Main Authors: CHENG ZHENGHUI, ZHANG DECHUANG, GAO XIAO, CAO ZHENCAI, QIU YUCHEN, LIN JIANGUO
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2017
• Subjects: ALLOYS; APPARATUS THEREFOR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HUMAN NECESSITIES; HYGIENE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METALLURGY OF IRON; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a surface treatment method for a material nickel-titanium alloy for a left aurcle plugging device, belongs to the technical field of medical metal surface treatment, and relates to a surface treatment method for a biomedical nickel-titanium alloy. The method comprises the following steps and technology conditions including the first step of base material pretreatment, the second step of electrochemical polishing, the third step of product heat treatment shaping and the fourth step of the surface passivation technology. Compared with the prior art, through the technology, the surface processing quality can be obviously improved, the corrosion resisting performance of a nickel-titanium plugging device is improved, the technology processing range can be enlarged, and the method is particularly suitable for surface treatment of small nickel-titanium products of a complex structure, cost is low, treatment is simple and convenient, and factory production and usage of the nickel-titanium prod