Method and apparatus for etching-manufacture of cylindrical elements

A process is described for the manufacture of flexible tubular elements, particularly stents for the medical field, the process comprising the steps of: a) providing a hollow metal tube (or metal coated tube) with an open pattern of a chemical-etch-resistant coating layer; b) supporting the hollow m...

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Bibliographische Detailangaben
Hauptverfasser:	LUNDBLAD, LEROY J, DUFRESNE, MICHAEL J
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL SURFACE TREATMENT CHEMISTRY CINEMATOGRAPHY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL 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 DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROGRAPHY FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HOLOGRAPHY HUMAN NECESSITIES HYGIENE INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MATERIALS THEREFOR MEDICAL OR VETERINARY SCIENCE METALLURGY 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 ORIGINALS THEREFOR ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A process is described for the manufacture of flexible tubular elements, particularly stents for the medical field, the process comprising the steps of: a) providing a hollow metal tube (or metal coated tube) with an open pattern of a chemical-etch-resistant coating layer; b) supporting the hollow metal tube with a coating thereon onto a chemical etch resistant support element; c) contacting the open pattern with a solution capable of etching the metal of the hollow metal tube so that said metal is etched away from physically exposed surfaces of the metal tube and openings in the metal tube corresponding to the open pattern of the coating layer are created in the metal tube element without etching the chemical etch resistant support element; and d) removing the metal tube from the chemical etch resistant support element.