Blood pressure measuring unit
First Claim
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.
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Abstract
Disclosed is a blood pressure measuring unit comprising a casing having a wrist band to be wound around a user'"'"'s wrist. The casing is installed therein with a digital display device and a blood pressure measuring device, and is provided with an air pressure chamber to which cuffs are fixed in such a manner that the cuffs are communicated with the air pressure chamber. The blood pressure measuring device is composed of a pressure sensor having a pressure sensing portion, an oscillating circuit, and a processor, the pressure sensing portion being slightly allowed to project into the air pressure chamber, and the processor being electrically connected to the digital display device.
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Citations
8 Claims
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1. A blood pressure measuring unit of the type which can be worn about the wrist of a user, comprising:
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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 Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification