Apparatus and method for determination of stroke volume using the brachial artery
US7806830B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Jun 24, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/352
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided herein are methods and apparatus for stroke volume determination by bioimpedance from a patient's upper arm, or brachium, or a patient's thorax, utilizing pulsations of the arteries contained therein. The apparatus includes two or more spaced apart alternating current flow electrodes positioned on the patient's arm or thorax and two or more spaced apart voltage sensing electrodes positioned on the patient's arm or thorax and in-between alternating current flow electrodes. The system and method utilizes the mean value of the second time-derivative of the cardiogenically induced impedance variation of the patient using the measured voltage from the voltage sensors in calculating the stroke volume of the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.