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Medical valve and method to monitor intra-abdominal pressure

  • US 20070038143A1
  • Filed: 08/09/2005
  • Published: 02/15/2007
  • Est. Priority Date: 03/04/2003
  • Status: Active Grant
First Claim
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1. A hydraulically actuated valve, comprising:

  • a housing configured and arranged to permit fluid communication between an entrance port, a control port, and a drain port;

    a seal member arranged inside said housing for hydraulic actuation between a valve-open position and a valve-closed position, said valve-open position permitting draining fluid flow between said entrance port and said drain port, and said valve-closed position resisting said draining fluid flow;

    a fluid-flow restriction valve disposed in a first fluid path along which control fluid may flow from said control port toward said entrance port, said fluid-flow restriction valve being structured to generate a back-pressure responsive to a flow of said control fluid, said back-pressure being effective to urge flow of actuation fluid toward said seal member; and

    a bleed-down port configured and arranged to permit evacuation, as bleed-down fluid, of actuation fluid confined by said seal member.

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