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Vascular access system for extracorporeal treatment of blood

  • US 5,041,098 A
  • Filed: 05/19/1989
  • Issued: 08/20/1991
  • Est. Priority Date: 05/19/1989
  • Status: Expired due to Term
First Claim
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1. An implantable vascular access device including a port comprising:

  • (a) a biocompatible housing having an internal open-faced chamber extending along a reference axis and defined by a sidewall forming a lateral boundary and being concave in the direction of said axis, and a bottom wall;

    (b) a septum affixed to said housing and spanning the periphery of the open face of said chamber,said septum including a biocompatible, self-resealing, penetrable material; and

    (c) a cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter,said cannula further having internal walls defining a channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said chamber, to said second end, wherein the transition between said lateral boundary of said chamber and said internal walls of said canula is smooth.

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