A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 29/00 (2006.01)
Patent
CA 2542368
A vessel stent feeder to be used for implanting a vessel stent 3 in a vessel which comprises: a catheter (1) which is inserted into a vessel in vivo; a balloon (2) which is attached to the periphery at the front edge of the catheter and inflated by a fluid fed into the catheter; a cylindrical vessel stent (3) made of a biodegradable polymer and having self-expandability which is attached to the balloon in a withered state; and a stent holder (21) provided to coat the catheter and at least a part of the vessel stent which is made of a polymer having been shaped into a cylinder and oriented in the logitudinal direction so as to hold the vessel stent on the balloon. The stent holder has an easily breakable part (22) at the front edge located in the front edge side of the catheter. As the balloon is inflated, the vessel stent expands and the stent holder is broken along the easily breakable part. Thus, the holding of the vessel stent is released to thereby allow the expansion of the vessel stent (3).
L'invention concerne un dispositif de mise en place de stent utilisé pour implanter un stent (3) dans un vaisseau, lequel comprend: un cathéter (1) qui est inséré dans un vaisseau in vivo; un ballonnet (2) qui est fixé sur le bord avant de la périphérie du cathéter et gonflé par un fluide conduit dans le cathéter; un stent (3) cylindrique constitué d'un polymère biodégradable et auto-expansible, qui est fixé au ballonnet à l'état rétracté; et un porte-stent (21) conçu pour envelopper le cathéter et au moins une partie du stent, qui est constitué d'un polymère mis sous forme d'un cylindre et orienté dans le sens longitudinal de façon à maintenir le stent sur le ballonnet. Le porte-stent présente une partie frangible (22) sur son bord avant, laquelle est placée du côté du bord avant du cathéter. Lorsque le ballon se gonfle, le stent se déploie et le porte-stent se rompt le long de la partie frangible. Ainsi, le stent est libéré et peut ainsi finir de se déployer (3).
Gowling Lafleur Henderson Llp
Kabushikikaisha Igaki Iryo Sekkei
LandOfFree
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