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:
Jul. 15, 2008
Filed:
Apr. 13, 2004
Akihiko Kandori, Kokubunji, JP;
Keiji Tsukada, Okayama, JP;
Tsuyoshi Miyashita, Fuchu, JP;
Kuniomi Ogata, Hachioji, JP;
Akihiko Kandori, Kokubunji, JP;
Keiji Tsukada, Okayama, JP;
Tsuyoshi Miyashita, Fuchu, JP;
Kuniomi Ogata, Hachioji, JP;
Hitachi High-Technologies, Corp., Tokyo, JP;
Abstract
A biomagnetic measurement technique which can obtain a potential waveform corresponding to a ventricular muscle cell action potential in a non-invasive manner. The biomagnetic measurement apparatus including an operating circuit for magnetometer. The output data of the operating circuit for the magnetometer is collected and a current vector at time t is calculated. Further, an absolute value Ixy of the current vector, a potential waveform V (t) in time corresponding to depolarization of a heart from the absolute value of the current vector, and a potential waveform V (t) in a refractory period of the heart to a period corresponding to repolarization from the absolute value of the current vector are calculated.