×

Method for testing venous valves

  • US 5,327,774 A
  • Filed: 10/08/1993
  • Issued: 07/12/1994
  • Est. Priority Date: 04/25/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for testing the function of venous valves, said method comprising:

  • (a) holding a venous valve sample in a substantially fixed position;

    (b) fluidly connecting an inflow conduit in relation to said venous valve to pass a flow of liquid through said venous valve;

    (c) fluidly connecting an outflow conduit in relation to said venous valve such that liquid passing through said venous valve will then flow through said outflow conduit;

    (d) pumping a pulsatile flow of liquid through said inflow conduit to mimic the effect of a physiological muscle pump on venous return in a human being;

    (e) creating cyclic variations in pressure on liquid exiting said venous valve through said outflow conduit to mimic the effect of intrathoracic variations in pressure which occur in a human being during respiration.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×