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Wrist-mounted vital functions monitor and emergency locator

  • US 4,819,860 A
  • Filed: 01/09/1986
  • Issued: 04/11/1989
  • Est. Priority Date: 01/09/1986
  • Status: Expired due to Fees
First Claim
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1. A portable vital functions monitoring device and emergency signal generator comprising:

  • (a) a housing adapted for mounting against the skin of an individual(b) means for securing said housing against the skin of said individual;

    (c) pulse rate sensing means mounted on said housing for contact with said skin and for sensing the pulse rate of an individual and for producing a pulse rate output signal representative thereof;

    (d) computing means responsive to said pulse rate output signal for computing an instantaneous pulse rate of said individual and for producing a signal representative thereof;

    (e) clock means for measuring a period of time;

    (f) information storage means;

    (g) means for monitoring said instantaneous pulse rate over a period of time sufficient to include periods of rest and periods of extreme physical activity of said individual and for storing in said information storage means the highest and lowest values of said instantaneous pulse rate monitored over said period of time;

    (h) comparison means for comparing said instantaneous pulse rate value to said stored values in said information storage means; and

    (i) means for producing an emergency radio alarm signal in the event that said comparison indicates that said instantaneous pulse rate value is above the highest stored value in said information storage means or below said lowest stored value in said information storage means.

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