MEDICAL INSTRUMENT AND PRODUCTION THEREOF

• Main Author: MASAAKI KASAI
• Format: Patent
• Language: English
• Published: 21.05.1992
• Edition: 5
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

This invention relates to a medical instrument having a cylindrical member and a member which slides while keeping a close contact with the inner wall of the cylindrical member, wherein a lubricating film (7) which has durability and is not easily peeled off is formed on a thermoplastic elastomer layer of at least that portion of the sliding member (5) which comes into contact with the cylindrical inner wall by low-temperature plasma polymerization of a thermoplastic synthetic resin having a low kinetic frictional coefficient in a monomer atmosphere so that the sliding member can be fitted smoothly into the cylindrical member and can slide smoothly inside the cylindrical member. The invention also relates to a method of production of such a medical instrument.