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Hand-held, battery operated, doppler ultrasound medical diagnostic device with cordless probe

  • US 5,640,960 A
  • Filed: 04/18/1995
  • Issued: 06/24/1997
  • Est. Priority Date: 04/18/1995
  • Status: Expired due to Fees
First Claim
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1. Diagnostic apparatus for measuring physical phenomena occurring inside a body, comprising:

  • a transmitter capable of generating acoustic waves and propagating said acoustic waves into said body, wherein said acoustic waves are capable of being altered in response to the physical phenomena occurring in said body such that said altered acoustic waves are indicative of the physical phenomena occurring in said body, and wherein said transmitter is located external of said body;

    a transducer capable of detecting said altered acoustic waves, said transducer being located external of said body and capable of generating an electric receiver signal having characteristics indicative of the physical phenomena;

    signal converter means connected to said transducer for converting said electric receiver signal to a frequency modulated sine wave current that is indicative of the physical phenomena;

    a plurality of light emitters connected to said signal converter means, which light emitters emit light with intensity that is a linear function of amplitude of the frequency modulated sine wave current;

    a light detector separated spatially from said light emitter and external of said body, which light detector is capable of producing an electric detector signal;

    signal processing means connected to said light detector for extracting information about said physical phenomena from said electric detector signal; and

    display means connected to said signal processing means for producing a display of said information.

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