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:
Aug. 28, 2012
Filed:
Jul. 07, 2007
Yukiyoshi Saito, Tokyo, JP;
Minoru Tokiwa, Tokyo, JP;
Toshikazu Yokokawa, Tokyo, JP;
Takashi Yokoi, Tsukuba, JP;
Hidehiko Komine, Tsukuba, JP;
Yoshiyuki Asai, Tsukuba, JP;
Yukiyoshi Saito, Tokyo, JP;
Minoru Tokiwa, Tokyo, JP;
Toshikazu Yokokawa, Tokyo, JP;
Takashi Yokoi, Tsukuba, JP;
Hidehiko Komine, Tsukuba, JP;
Yoshiyuki Asai, Tsukuba, JP;
Shisei Datum Co., Ltd., Tokyo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
The present invention is directed to provide an apparatus for measuring a vascular viscoelasticity index which is noninvasive, simple in structure and yet inexpensive. The present invention provides an apparatus for measuring a vascular viscoelasticity index, which measures a vascular viscoelasticity index α by a formula α={(PbPa)−(PbPa)}/(VaVa) wherein Pbis the maximal value of the first pulse wave; Vais the local maximum value of a time derivative value of the first pulse wave; Pais the pulse wave amplitude corresponding to the local maximum value Va; Pbis the maximal value of the second pulse wave; Vais the local maximum value of a time derivative value of the second pulse wave; and Pais the pulse wave amplitude corresponding to the local maximum value Va