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:
Nov. 04, 2025
Filed:
Jul. 19, 2019
Waseda University, Tokyo, JP;
Masafumi Nakayama, Tokyo, JP;
Kiyotaka Iwasaki, Tokyo, JP;
WASEDA UNIVERSITY, Tokyo, JP;
Abstract
An ischemic cardiopathy diagnosis assistance system includes pressure data acquisition meansfor acquiring pressure data including proximal pressure Pa in a proximal stenotic segment Aand distal pressure Pd in a distal stenotic segment A; intracoronary electrocardiogram data acquisition meansfor acquiring intracoronary electrocardiogram data made up of a local intracoronary artery electrocardiogram in a neighborhood of the distal stenotic segment; and computational processing meansfor finding a pressure ratio Pa/Pd between the proximal pressure Pa and distal pressure Pd at a time suitable for diagnosis of ischemic cardiopathy based on these data. The computational processing means temporally associates the pressure data with the intracoronary electrocardiogram data, estimates an analysis period T during which vascular resistance remains stably low from a waveform of the intracoronary electrocardiogram data, and extract the pressure data of the analysis period T, and finds the pressure ratio Pa/Pd from the pressure data.