Stent

Details Stent Stent

A - Human Necessities

61

M

A61M 29/02 (2006.01)

Patent

CA 2518207

A stent capable of further reducing the frequency of occurrence of repeated stenosis (restenosis) in a conventional stent, wherein a structure for cutting an organism tissue is disposed on the outer surface of a stent body. Since the structure is expanded while cutting body structures such as blood vessel when the stent is expanded in the radial outer direction and then indwelled, the restenosis can be suppressed by reducing stress and disorder damage to the body structures such as the blood vessel. Also the effect of the structure can be more increased by applying chemicals thereto.

L'invention concerne un stent permettant de réduire davantage la fréquence d'apparition d'une nouvelle sténose (resténose) comparativement à un stent classique, une structure servant à couper un tissu organique étant disposée sur la surface extérieure du corps de ce stent. Ladite structure étant expansée lors de la coupe de structures corporelles telles que des vaisseaux sanguins lorsque le stent est expansé dans la direction radiale extérieure, puis fixé, la resténose peut être supprimée par réduction des lésions de stress et troubles au niveau des structures corporelles telles que les vaisseaux sanguins. L'effet de la structure susmentionnée peut être renforcé par application de substances chimiques sur celle-ci.

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