[특허]Instrument for retaining inner diameter of tubular organ lumen

Instrument for retaining inner diameter of tubular organ lumen 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61F-011/00
출원번호	US-0924378 (1992-07-31)
우선권정보	JP-0237510 (1987-09-24)
발명자 / 주소	Harada Fumiaki (Fuji JPX) Ishida Toshinobu (Fuji JPX)
출원인 / 주소	Terumo Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 107 인용 특허 : 0

초록 ▼

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.

대표청구항 ▼

A system for maintaining an inner diameter of a tubular organ lumen of a living body, which system comprises: (a) an inner diameter retaining instrument comprising: a cylindrical member made of a unidirectional shape memory alloy whose transformation temperature is higher than a body temperature of a living body in which the cylindrical member is to placed, said cylindrical member being radially expandable by an external force at a body temperature of the living body, and an outer diameter of said cylindrical member in a basic phase thereof when heated to said transformation temperature being set to be smaller than an inner diameter of a tubular body organ of the living body in which said cylindrical member is to be introduced; and (b) a recovery catheter comprising a main tubular body having a plurality of side holes provided at a distal end portion thereof and a heating liquid supply port provided at a proximal end thereof for introducing a heated liquid into the main tubular body for heating said inner diameter retaining instrument through said side holes to constrict said inner diameter retaining instrument to said basic phase so as to mount said inner diameter retaining instrument on said distal end portion of said recovery catheter.

이 특허를 인용한 특허 (107)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Instrument for retaining inner diameter of tubular organ lumen 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (107)

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연합인증

Instrument for retaining inner diameter of tubular organ lumen 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (107)

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