Nipro Corporation

Nissho Corporation

Toshiki Kobayashi

Katsuya Miyagawa

Yoshikazu Kishigami

Kazuyuki Koike

Toshihiro Kikuchi

Hideaki Kataoka

Hideaki Senzaki

Kazuyuki Koike, Deceased

A balloon catheter for interatrial septum dehiscence including an expandable and contractible balloon, and a shaft to which the balloon can be attached at the distal end thereof, wherein fixing members are provided at balloon mounting portions to be attached to the shaft. The fixing members are a pair of members in opposed relationship to each other at the ends of the balloon. The pair of members generally has an identical shape.

Balloon catheter

A closure device for transcatheter operations includes a longitudinally elasticated fixing member ( ) having a shape-restoring force and being provided with a relatively large-sized, first and second circular portion ( ) at both ends thereof, and a closure membrane ( ) attached to the first circular portion ( ) and closing up a ring thereof. The first circular portion ( ) is fixed by a connecting portion extending from the fixed circular portion and progressively decreasing in size toward the second circular portion. The second circular portion may be provided with a holding portion ( ) as occasion demands.

Closure device for transcatheter operations

An easily foldable closure device for transcatheter operations, comprises: a flat closure member including a closure membrane and a frame for fimbriating a periphery of the membrane; a fixing member for fixing the closure member to a tissue surrounding a defect aperture; and a connecting member fixed at one end to the fixing member and at the other end to the closure member for holding them in close proximity to one another. The frame, fixing member and connecting member are respectively made of the same or different shape-memory alloys with a shape recovery temperature of 30 to 37&deg; C.

Closure device for transcatheter operation and catheter assembly therefor

A closure device for transcatheter operations comprises an easily foldable closure member with a shape-restoring force, an easily inflective fixing member of an elastic material, and an easily inflective elastic member having either ends respectively fixed to the fixing member or closure member and holding the closure member and the fixing member in close proximity to one another. The closure device is used in combination with a catheter assembly comprising an elongated sheath opened at both ends and adapted to accommodate the folded closure device therein, and an operating member having at a distal end thereof a holding element for releasably holding the closure device and for guiding and protruding the folded closure device inserted in the sheath from a distal end of the sheath.

Closure device for transcatheter operations and catheter assembly therefor

A device for retrieval of defect closure devices, comprising a closure-catch catheter having at a distal end thereof a closure-catching device and at a proximal end thereof, a grip for operating the closure-catching. An elongated sheath having a lumen and is provided at the proximal end thereof with a lateral injection tube and hemostatic device. The catheter is moveably insertable in the lumen.

Growing community of inventors

Kawagoe, Japan

Toshiki Kobayashi