IMPROVED TYPE TISSUE SUPPORTING DEVICE

PROBLEM TO BE SOLVED: To provide a new multiple component stent which allows for initial self-expansion in a body and subsequent deformation to a final enlarged diameter. SOLUTION: The stent 30 has at least two layers 32 and 34. One layer 32 is an Ni-Ti alloy and is normally in an austenitic state....

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Bibliographische Detailangaben
Hauptverfasser:	VRBA ANTHONY C, BROWN BRIAN J, FORDENBACHER PAUL J, BURMEISTER PAUL H, EUTENEUER CHARLES L
Format:	Patent
Sprache:	eng
Schlagworte:	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 MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a new multiple component stent which allows for initial self-expansion in a body and subsequent deformation to a final enlarged diameter. SOLUTION: The stent 30 has at least two layers 32 and 34. One layer 32 is an Ni-Ti alloy and is normally in an austenitic state. The other layer 34 is the Ni-Ti alloy and is normally in a martensitic state. When the stent 30 is released to a prescribed position in the body, it expands to a fixed percentage of the length and shape at self-expansion time by the layer 32 changing from martensite to austenite. At this time, a balloon makes the stent to expand in the radial direction by deforming the martensite layer 34, and can be used for making it to have a larger permanent diameter. COPYRIGHT: (C)2007,JPO&INPIT