THIN, NARROW TUBE; DRAWING DEVICE FOR PRODUCING SAME; AND DRAWING METHOD

• Main Authors: MATSUZAKI KUNIO, HANADA KOTARO
• Format: Patent
• Language: English; French; Japanese
• Published: 06.02.2014
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PROSTHESES; PUNCHING METAL; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS

Provided is a thin, narrow tube for use in a biodegradable medical device, comprising a round tube using magnesium material as a base material, wherein a desired outer diameter and inner diameter are provided with good precision across the entire area in the longitudinal direction and peripheral direction, and the length of the biodegradation time can be controlled without changing the material composition. The thin, narrow tube is used in a biodegradable medical device and is a round tube comprising crystals containing magnesium (Mg) having a hexagonal crystal structure, the crystal composing the round tube being such that the basal plane (0001) of the hexagonal crystal, when viewed from the tube-axis direction of the tube, is oriented at a prescribed inclined angle relative to the circumferential direction, which is perpendicular to the radial direction (the direction from the inner side surface to the outer side surface) of the tube. L'invention concerne un tube mince et étroit destiné à être utilisé dans un dispositif médical biodégradable, comprenant un tube rond employant comme matériau de base un matériau de magnésium, un diamètre externe et un diamètre interne désirés étant formés avec une bonne précision sur toute la surface dans la direction longitudinale et la direction périphérique, et la durée de biodégradation pouvant être régulée sans changer la composition du matériau. Le tube mince et étroit est utilisé dans un dispositif médical biodégradable et est un tube rond comprenant des cristaux contenant du magnésium (Mg) ayant une structure cristalline hexagonale, le cristal composant le tube étant tel que le plan basal (0001) du cristal hexagonal, observé depuis la direction de l'axe du tube, est orienté à un angle incliné prescrit par rapport à la direction circonférentielle, qui est perpendiculaire à la direction radiale (la direction allant de la surface interne vers la surface externe) du tube.