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Automated occlusion clamp for centrifugal blood pumps

  • US 6,579,257 B1
  • Filed: 09/21/1999
  • Issued: 06/17/2003
  • Est. Priority Date: 09/21/1999
  • Status: Expired due to Term
First Claim
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1. An extracorporeal blood circuit for heart-lung machines, comprising:

  • a) a centrifugal blood pump arranged to pump blood through said circuit;

    b) a line of flexible tubing forming part of said circuit, c) a power-actuatable clamping device disposed externally of said line, said device being arranged to normally clamp said line to occlude it, and to release said line for free blood flow therethrough when actuated; and

    d) a flow sensor arranged to produce a signal indicative of blood flow through said line, said clamping device being actuated only as long as said signal indicates forward blood flow through said line.

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