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Medical fluid infusion and aspiration

  • US 6,120,483 A
  • Filed: 03/19/1999
  • Issued: 09/19/2000
  • Est. Priority Date: 10/01/1997
  • Status: Expired due to Term
First Claim
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1. A catheter, comprising:

  • (a) a first valve comprising a first protuberance and a first slit extending through said first protuberance and through said catheter, said first protuberance projecting from said catheter; and

    (b) a second valve comprising a second protuberance and a second slit extending through said second protuberance and through said catheter, said second protuberance projecting from said catheter,said first protuberance'"'"'s projection being greater than said second protuberance'"'"'s projection.

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