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Microbore catheter with velocity reducing chamber

  • US 6,139,539 A
  • Filed: 10/13/1998
  • Issued: 10/31/2000
  • Est. Priority Date: 04/30/1996
  • Status: Expired due to Term
First Claim
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1. A catheter, comprising:

  • a generally elongated tubular member including a first lumen portion having a first inner diameter, a second lumen portion having a second inner diameter greater than said first inner diameter of said first lumen portion, and a transitional lumen portion extending between said first lumen portion and said second lumen portion and having a transitional inner diameter that expands along its length between said first lumen portion and said second lumen portion such that the velocity of the fluid being transported from said first lumen portion toward said second lumen portion will be reduced upon entering said transitional lumen portion,said second lumen portion including a fluid exit opening that is proximate said transitional lumen portion and is substantially open to fluid flow when said second lumen portion is not deformed.

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