Artifact detection based on heart rate in a method and apparatus for indirect blood pressure measurement
US4777959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Sep 17, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for the indirect measurement of blood pressure is disclosed. Pressure is applied to a cuff attached to a patient adjacent a blood vessel and a quantity representative of the patient's blood pressure is measured as the applied pressure is changed. A first table of values of the quantity as the applied pressure is changed is formed. Values of the first table are selected as spurious high and low values in response to predetermined criteria and new values assigned to the selected values which reduces the error in calculating systolic and diastolic blood pressures from the table. A second table of heart rate values as the applied pressure is changed is formed. Selected heart rate values are set to zero based on predetermined criteria and the locations of the zeros are compared with the locations of systolic, diastolic and maximum values in first table to determine whether to reject or abort the blood pressure reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.