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Low-Cost Pneumatic Apnea or Respiration Monitor

  • US 3,882,847 A
  • Filed: 12/11/1973
  • Issued: 05/13/1975
  • Est. Priority Date: 12/11/1973
  • Status: Expired due to Term
First Claim
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1. A pressure fluid breathing monitor for a patient comprising:

  • a support, a valve means having two relatively movable valve parts;

    a body belt adapted to partly surround the patient'"'"''"'"'s chest;

    means connecting one end of the belt to one valve part and means for connecting the other end of the belt to said support;

    said valve parts moving relatively to each other in response to the inhalation and exhalation motions of the chest;

    a source of pressure fluid connected to the valve means;

    pressure fluid operated alaRm means including two alarm devices, each connected to said valve means by a separate conduit means, one alarm responding to abnormal inhalation motion and the other to abnormal exhalation motion;

    conduit means connecting said alarm means to said valve means to receive pressure fluid therefrom for operation of said alarm device;

    delay means connected to said conduit means to control the time interval wherein the pressure fluid effects the activation of the alarm means; and

    , said relatively movable valve parts controlling the flow from said pressure fluid source to said conduit means in response to the inhalation and exhalation motions of the chest.

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