Cardiac output monitor using fuzzy logic blood pressure analysis
US6007491A · kind A · utility
40Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Feb 6, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/92
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of monitoring cardiac output. The method uses a blood pressure waveform as input. The waveform is digitized and various blood pressure features are extracted. The features are used as inputs to a fuzzy logic model, where each input is fuzzified by determining its degree of confidence as a member of one or more fuzzy membership regions. A rule base is applied to the defuzzified inputs to obtain a fuzzy stroke volume index. This output is defuzzied and used to calculate cardiac output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.