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Foetal monitor

  • US 5,609,156 A
  • Filed: 01/24/1995
  • Issued: 03/11/1997
  • Est. Priority Date: 06/09/1992
  • Status: Expired due to Term
First Claim
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1. A foetal monitor comprising:

  • a sensing device including sensors for measuring uterine movement and foetal heart rate, of a patient under observation,a data collection device, coupled to the sensing device and arranged to receive and sample an output signal of the sensing device and to generate digital signals representative of the parameter over a predetermined time interval,data analysis means including recognition means operable periodically to calculate a baseline heart rate value by calculating a plurality of modal values for a respective plurality of modal ranges of the measured foetal heart rate over a predetermined time interval of the foetal heart rate and to recognize in the digital signals received over a signal link from the data collection device a plurality of predetermined information features by automatically analyzing the digital signals in relation to the baseline heart rate value and classification means for classifying at least one of the said features, to produce first output signals representative of the existence of such features and representative of feature classifications,signal storage means arranged to receive and store the said first output signals as a short term knowledge base,database storage means for storing reference data as long term knowledge base,database storage means for storing reference data as a long term knowledge base,an inference engine arranged to process signals representative of the short term and long term knowledge bases automatically to produce conclusion signals, andindication means arranged to receive the conclusion signals and to provide an indication of said conclusion signals.

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