The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1993
Filed:
Jul. 31, 1992
Fumiaki Harada, Fuji, JP;
Toshinobu Ishida, Fuji, JP;
Terumo Kabushiki Kaisha, Tokyo, JP;
Abstract
An inner diameter retaining instrument for holding a predetermined expansion state of the lumen of a tubular organ such as a blood vessel, a digestive tract, or a windpipe is disclosed. This instrument is formed into a cylindrical shape or substantially cylindrical shape by a unidirectional shape memory alloy. The outer diameter of the cylindrical body at its transformation temperature (e.g., a temperature higher than a body temperature) is set to be smaller than the inner diameter of a tubular organ in which the cylindrical body is introduced. The instrument can be deformed to be radially expanded at, e.g., the body temperature or lower. As a cylindrical shape, a coil-like shape, a shape having a spiral section, a shape having a slit in its longitudinal direction, or a mesh-like shape can be arbitrarily selected.