Title:
血管疾患検査装置およびバイパス血管診断装置
Document Type and Number:
Japanese Patent JP5076203
Kind Code:
B2
Abstract:
Disclosed are a vascular disease examination system capable of examining and diagnosing vascular diseases such as arterial obliteration by determining the feature quantities of blood flow velocity waveforms or blood pressure waveforms or blood flow rates, and a bypass vascular diagnosing system. A blood flow velocity or blood pressure at a target location of the body is measured and the measurement signal is supplied to a vascular disease examination system 1. The measurement signal is converted into a digital signal at an A/D conversion unit 2 and temporarily stored in a memory unit 3. A waveform analysis unit 4 determines the feature quantity of a blood flow waveform (or blood pressure waveform) , for displaying on an output unit 5. The feature quantity includes a time constant, Fourier transform value, differentiated value, integrated value, rise/fall time, and sharpness or gradient of rise. Feature quantity of a blood flow velocity waveform (or blood pressure waveform) indicated in numeric value enables a correct examination/diagnosis.
Inventors:
Kinichi Nakata
Yoshiyuki Sankai
Yoshiyuki Sankai
Application Number:
JP2001262965A
Publication Date:
November 21, 2012
Filing Date:
August 31, 2001
Export Citation:
Assignee:
NIHON UNIVERSITY
Tsukuba Technology Seed Co., Ltd.
Tsukuba Technology Seed Co., Ltd.
International Classes:
A61B5/0285; A61B5/022; A61B8/06
Domestic Patent References:
| JP7308294A |
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida
Jun Ishida