Vascular access system for extracorporeal treatment of blood

Details Vascular access system for extracorporeal treatment of blood Vascular access system for extracorporeal treatment of blood

A - Human Necessities

61

M

128/81

A61M 5/32 (2006.01) A61M 39/02 (2006.01)

Patent

CA 2033161

Disclosed is an implantable vascular access port including a biocompatible housing having at least one internal open-faced chamber defined by a concave sidewall and a bottom wall; a septum affixed to the housing and spanning the periphery of the open face of said chamber, the septum including a biocompatible, self-resealing, penetrable material; and a cannula attached at a first end thereof to the housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter. The cannula further includes internal walls defining a channel extending from the first end, along a channel axis from a point on the lateral boundary of said chamber, to the second end, the channel having a radius R1 at the first end and a radius R2 at the second end, where R1 is greater than R2.

L'invention porte sur un dispositif d'accès vasculaire implantable. Ce dernier inclut un boîtier biocompatible comprenant : au moins une chambre interne ouverte définie par une paroi latérale concave et une paroi inférieure; une cloison fixée au boîtier et recouvrant la périphérie de la face ouverte de la chambre susmentionnée, la cloison étant composée d'une matière biocompatible, auto-étanche et perforable; une canule fixée au boîtier par sa première extrémité, se prolongeant latéralement à partir de ce dernier et ayant une seconde extrémité conçue pour recevoir un cathéter. La canule comprend également des parois internes définissant un passage qui se prolonge de la première extrémité, le long d'un axe partant d'un point du bord latéral de la chambre, jusqu'à la seconde extrémité. En outre, le rayon R1 de la première extrémité du passage est supérieur au rayon R2 de la seconde extrémité du passage.

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