×

Blood pressure measuring unit

  • US 4,896,676 A
  • Filed: 10/27/1988
  • Issued: 01/30/1990
  • Est. Priority Date: 06/11/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A blood pressure measuring unit of the type which can be worn about the wrist of a user, comprising:

  • a display device including a digital time displaying watch device;

    wrist band means for fitting about the wrist of a user;

    casing means secured to said wrist band means for holding at least said display device;

    an air pressure chamber secured to said casing means for holding air at a pressure that is greater than atmospheric pressure;

    means for supplying compressed air to said pressure chamber;

    cuff means for contacting the wrist of a user, formed of resilient material and in communication with said air pressure chamber, said cuff means having a first substantially flat outer surface in contact with an inside surface of said wrist band means, and an inner surface adapted to contact the wrist of a user;

    means for sensing the pressure within said air pressure chamber by using an electrostatic variable capacitor formed of flat sheets of capacitive material; and

    means responsive to said pressure sensing means for calculating the blood pressure of a user, and for supplying such information to said display means so that it may be displayed.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×