System and method for analyzing electrogastrophic signal
US5795304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1997 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Mar 26, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7203
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system for analyzing an electrogastrophic (EGG) signal are disclosed. Electrodes are positioned on abdominal skin of a subject adjacent a stomach thereof. The electrodes obtain the EGG signal produced by the stomach. An amplifier is connected to the electrodes, receives the obtained EGG signals, and amplifies the obtained EGG signal. A transforming device is operatively connected to the amplifier. The transforming device receives the amplified EGG signal and transforms the amplified EGG signal from a time domain representation to a frequency domain representation. The transformation is accomplished by way of a predetermined transform function incorporating a variable frequency and a window function. The window function has a time resolution and a frequency resolution. The frequency resolution of the window function is proportional to the frequency. The time resolution of the window function varies with the frequency such that the time resolution is relatively narrow when the frequency is relatively high and relatively broad when the frequency is relatively low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.