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Intrauterine pressure catheter device

  • US 5,984,879 A
  • Filed: 09/03/1996
  • Issued: 11/16/1999
  • Est. Priority Date: 09/03/1996
  • Status: Expired due to Term
First Claim
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1. A pressure catheter for detecting changes in pressure within a patient'"'"'s body, comprising:

  • an elongated outer hollow tube defining a fluid channel extending longitudinally through an interior thereof, and at least one aperture formed in said outer hollow tube to provide communication between an exterior of said outer hollow tube and said fluid channel;

    an inner tube positioned at least partially within said elongated outer hollow tube;

    a flaccid, pressure-compliant member defining an interior chamber in communication with said inner tube, said flaccid, pressure-compliant member having an exterior surface exposed by structure of said catheter to a fluid environment within said patient'"'"'s body when inserted therein and substantially protected by structure of said pressure catheter from direct contact with tissues within said patient'"'"'s body while inserted therein; and

    a charging structure for charging air into said inner tube, said inner tube and said flaccid, pressure-compliant member defining a closed air column operative to transmit said changes in pressure acting upon said flacid, pressure-compliant member through said inner tube subsequent to receiving a charge of air.

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