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Stethoscope transducer

  • US 3,989,895 A
  • Filed: 05/08/1974
  • Issued: 11/02/1976
  • Est. Priority Date: 05/08/1974
  • Status: Expired due to Term
First Claim
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1. An improved stethoscope which allows its user to simultaneously monitor heart sounds using his ears while selectively detecting the heart sounds electrically and converting them into a meaningful electrical form for transmission to a receiving station, said improved stethoscope comprising:

  • a. mechanical sound pick-up means for producing a confined acoustical wave from a heart pulsation;

    b. said mechanical sound pick-up means including a first acoustical chamber;

    c. a conduit through which an acoustical wave may be transmitted, said conduit being operably communicable with an operator'"'"'s ears;

    d. a first bore-like passageway, said first passageway being in continuous communication with said first acoustical chamber;

    e. electrical sound conversion means for converting an acoustical wave which may be produced in said acoustical chamber into an electrical signal, said electrical sound conversion means including;

    i. housing apparatus;

    ii. means for operably attaching said housing apparatus to the stethoscope;

    iii. a microphone carried by said housing apparatus;

    iv. said housing apparatus containing an acoustical duct;

    v. means for retaining said microphone in sealed communication with said acoustical duct;

    vi. power means for operating said microphone; and

    vii. an out-put terminal carried by said housing apparatus and being in communication with said microphone for distributing an electrical signal which may be produced by said microphone;

    f. means for simultaneously interconnecting said conduit with said first passageway and said acoustical duct to allow heart sounds to be simultaneously transmitted mechanically to a listener'"'"'s ears and to said microphone.

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