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Bipolar electrode structure for monitoring fetal heartbeat and the like

  • US RE28,990 E
  • Filed: 02/06/1975
  • Issued: 10/05/1976
  • Est. Priority Date: 12/04/1972
  • Status: Expired due to Term
First Claim
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1. An apparatus for use in monitoring fetal heartbeat and the like comprising:

  • a .[.relatively rigid.]. .Iadd.form-sustaining.Iaddend., curved guide tube adapted to be inserted through the vagina and cervix of a woman in labor;

    a holder member slidably and rotatably disposed in said guide tube;

    a retaining coil mounted on said holder member and adapted to be screwed into a fetal epidermis by rotating the holder member;

    monitoring means mounted on said holder member;

    a flexible drive tube slidably and rotatably disposed in said curved guide tube for moving said holder member through said guide tube to bring said retaining coil into engagement with a fetal epidermis and for rotating said holder member to screw said retaining coil into the epidermis;

    .[.and.]..Iadd.said guide tube being more rigid than said drive tube so that said guide tube will maintain its curved configuration when said flexible drive tube is rotated within it; and

    .Iaddend.cooperating means on said drive tube and said holder member for rotating said holder member and said retaining coil by rotating said drive tube.

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