The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1978
Filed:
Dec. 08, 1976
Satoshi Matsuo, Yokohama, JP;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Abstract
A heart/lung function measuring apparatus comprises a source for permitting a constant slight current of a high frequency wave of predetermined frequency to flow through a to-be-measured portion of a living body, a voltage detection section detecting a voltage loop based on the impedance of the living body area, a sample-hold circuit for sampling a predetermined level of an output signal of the voltage detection section and holding the sampled value, a peak detector for generating a detector output according to a peak voltage of the output of the detection section, a pulse generator for generating a pulse signal which is applied as a trigger signal to the sample-hold circuit according to the output of the peak detector, and a subtractor for obtaining a difference output between the output of the voltage detection section and the output of the sample-hold circuit.