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:
Jan. 01, 2002
Filed:
Aug. 19, 1999
Seiko Epson Corporation, Tokyo, JP;
Abstract
An optical type pulse wave detection section 1 detects the pulse waveform MH above the skin while moving in the circumferential direction of the arm, when a manual position change mechanism is operated. Capillary vessels and arterioles surrounding a radial artery are formed inside the skin, and pulsation of the capillary vessels and arterioles are opposite in polarity. When a polarity detection section outputs a polarity detection signal KS showing the polarity of the pulse waveform MH, the polarity is displayed on a display . Accordingly, a subject can position the pulse wave detection section above the arterioles surrounding the artery by operating the manual position change mechanism while observing the display , allowing the pulse waveform MH to be detected with an optimal SN ratio. In addition, the pulse waveform of the arterioles can be detected by specifying the position of the artery without causing a constrictive feeling to the subject.