Cardiovascular artifact filter
US4781201A · kind A · utility
68Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1986 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Jul 22, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
For suppressing cardiovascular artifact from a respiration signal derived from a patient's transthoracic impedance, an adaptive filtering device determines the patient's heart rate, converts the respiration signal from an analog to digital representation at a rate proportional to the heart rate, and then filters the digital respiration signal such that that portion of the respiration signal having a frequency content at or above the heart rate is most greatly attenuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.