Apparatus for checking pulse and heart rates

Patent 4425921 Issued on January 17, 1984. Estimated Expiration Date:

September 11, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Senoh Kabushiki Kaisha

Application

No. 06/301122 filed on 09/11/1981

US Classes:

600/503, Entire testing assembly supported on wrist600/390, Belt or strap600/513Detecting heartbeat electric signal and diverse cardiovascular characteristic

Examiners

Primary: Cohen, Lee S.

Attorney, Agent or Firm

Lowe, King, Price & Becker

International Classes

A61B 5/024 (20060101)
A61B 5/0245 (20060101)
A61B 5/0402 (20060101)
A61B 5/0428 (20060101)

Foreign Application Priority Data

1981-01-19 JP

Abstract

A small portable-type apparatus for checking pulse or heart rate of a person engaged in exercise. Therefore, the apparatus according to the present invention can be used as a pulsimeter or a cardiometer according to the state of a person in motion. The apparatus is provided with a heart sensor having a plurality of cone-shaped conductive rubber electrodes to differentially detect an electrocardiowave voltage signal generated from three different places near the heart and a pulse sensor having a matching infrared-ray emitting diode and infrared-ray receiving phototransistor to detect the light reflected from the blood flowing through capillary vessels under the finger pad. The apparatus additionally functions as a stopwatch or a timer as selected by a mode-selector switch.

Other References

"CT-200 Cardiotechameter" The Waters Co., Bulletin CT200/65, 10/1965
Lee et al., "An LED-Transistor . . . ", IEEE Trans. on Bio Med. Eng., vol. 22, No. 3, pp. 248-250, May 1956