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Medical valve with positive flow characteristics

  • US 20060264844A1
  • Filed: 05/03/2006
  • Published: 11/23/2006
  • Est. Priority Date: 07/11/2000
  • Status: Abandoned Application
First Claim
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1. A method of introducing a fluid into the vasculature of a patient, the method comprising:

  • inserting a distal end of a cannula into the vasculature of the patient, said cannula having a valve connected to its proximal end, said valve comprising a housing and a seal element, wherein said housing comprises an interface fluidly coupled to the cannula and a lead cannula extending from the interface, wherein the seal element is made of a flexible material, the seal element having an upstream end, a downstream end in fluid communication with the lead cannula, and a normally substantially planar passage in fluid communication with the downstream end and the upstream end;

    placing a medical device into fluid communication with said seal element, wherein in an initial state, a majority of a length of the lead cannula is positioned outside of the passage, and upon insertion of the second medical device into the upstream end of the passage, the seal element is moved downward onto the lead cannula such that at least a portion of the lead cannula extends into the passage;

    operating said medical device so as to transfer said fluid through said cannula and the vasculature of the patient; and

    withdrawing said medical device from said seal element.

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