Passive hemostatic sheath valve

Details Passive hemostatic sheath valve Passive hemostatic sheath valve

A - Human Necessities

61

M

A61M 39/06 (2006.01)

Patent

CA 2534399

The present invention provides vascular introducer sheaths incorporating improved passive valves which can maintain hemostasis around medical instruments. A passive sheath valve (16) for creating a hemostatic seal around a medical instrument comprises a valve body (20) having an upstream end, a downstream end, and a lumen having an inner and outer surface therethrough. The valve body (20) defines a sealing aperture (36) that is configured nominally to remain open. The upstream end includes an upstream annulus region defining at least one opening (40) and the downstream end includes a downstream annulus region. Each annulus region and lumen outer surface define at least one chamber. The at least one opening transmits pressure from the upstream end through the upstream annulus region so as to allow a fluid to enter the at least one chamber.

L'invention concerne des gaines d'introduction vasculaires comprenant des valves passives permettant de maintenir une hémostase autour d'instruments médicaux. Une valve de gaine passive permettant de créer un joint hémostatique autour d'un instrument médical comprend un corps de valve doté d'une extrémité aval, une extrémité aval et une lumière dotée d'une surface intérieure et une surface extérieure. Le corps de valve définit une ouverture de scellement configurée nominalement pour rester ouverte. L'extrémité aval comprend une région annulaire aval définissant au moins une ouverture ainsi qu'une région annulaire aval. Chaque région annulaire et la surface extérieure de la lumière définissent au moins une chambre. L'ouverture transmet une pression de l'extrémité aval à travers la région annulaire aval, ce qui permet à un fluide d'entrer dans la chambre.

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