System and method for facilitating hemostasis of blood...

A - Human Necessities – 61 – F

Patent

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A61F 13/20 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2330634

A system for facilitating hemostasis of a puncture site in a blood vessel injects an absorbable sponge pledger (40) in a hydrated state at an exterior of the blood vessel (102) puncture to facilitate hemostasis. The system includes a tract dilator (10) for locating the puncture, an introducer (12), and a plunger (14). The introducer includes a staging chamber for receiving the absorbent sponge pledget, and a delivery chamber having a diameter smaller than a diameter of the staging chamber into which a hydrated pledget passes. The pledget is hydrated, compressed within the introducer, and then ejected with the plunger to the delivery site to facilitate hemostasis of the blood vessel puncture. The system delivers the absorbable sponge pledget over a guide wire to ensure the proper positioning of the pledget over the puncture. The implanted absorbable sponge once delivered expands rapidly to fill the target site, and is absorbed by the body over time.

L'invention concerne un système permettant de faciliter l'hémostase d'un site de ponction, dans un vaisseau sanguin, par injection d'un tampon éponge (40) absorbable, à l'état hydraté, et placé à l'extérieur du site de ponction (102) du vaisseau sanguin, de façon à faciliter l'hémostase. Le système comprend un dilatateur (10) de voie permettant de localiser la ponction, un dispositif d'introduction (12) et un piston plongeur (14). Le dispositif d'introduction comprend une chambre intermédiaire destinée à recevoir le tampon éponge absorbant, et une chambre d'administration possédant un diamètre inférieur à celui de la chambre intermédiaire dans laquelle le tampon hydraté passe. Le tampon est hydraté, comprimé dans le dispositif d'introduction, puis éjecté à l'aide du piston plongeur sur le site d'administration, de manière à faciliter l'hémostase au niveau de la ponction du vaisseau sanguin. Le système délivre le tampon éponge absorbant dans un fil-guide, de manière à assurer le positionnement correct du tampon dans le site de la ponction. Une fois le tampon éponge absorbable implanté, il se déploie rapidement de façon à remplir le site cible, et est absorbé progressivement par le corps.

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