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Methods of and apparatus for measuring uterine electrical and mechanical activity

  • US 5,397,344 A
  • Filed: 12/22/1992
  • Issued: 03/14/1995
  • Est. Priority Date: 12/22/1992
  • Status: Expired due to Fees
First Claim
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1. In a combination with a recording device for monitoring and recording electrical signals, a needle useful for insertion into tissue having cells with gap junctions occurring therebetween, which cells generate electrical signals that propagate by gap junctions upon stimulation of the cells, the needle comprising:

  • a hollow shank having an axis and a central cavity within which tissue is received;

    an array of recording electrodes disposed within the hollow shank for contact with the tissue therein, each of the recording electrodes having a first lead extending therefrom back to the recording device;

    an array of stimulation electrodes disposed in the hollow shank in spaced relation with respect to the recording electrodes for contact with the tissue therein, each stimulation electrode having a lead extending therefrom back to the recording device;

    the recording device including means connected to the second leads for applying stimulation signals over the second leads to the stimulation electrodes wherein the cells generate signals for detection by the recording electrodes and wherein the recording device includes means connected to the first leads extending from the recording electrodes for processing the signals.

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