Method for measuring the myocardial electrical impedance spectrum
US5454377A · kind A · utility
112Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Oct 8, 1993 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Oct 8, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7257
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for measuring the complex impedance spectrum of a portion of the myocardium by placing two electrodes on a portion of the myocardium and applying a current pulse to the electrodes to generate a voltage response between the electrodes. Both the current pulse and voltage response are sampled and digitized and then a Fast fourier transform is taken of both the current pulse and the voltage response to obtain a complex current pulse spectrum and a complex voltage response spectrum. Next, the complex voltage response spectrum is divided by the complex current pulse spectrum to obtain the complex impedance spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.