Methods for measurement of arterial blood flow
US5409009A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36571
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sensor for measurement of one or more parameters of arterial blood flow, located on a transvenously inserted lead. The sensor may be inserted into a vein that is anatomically adjacent to the artery in which blood flow parameters are to be monitored, rather than into the artery itself. The sensor may take the form of a set of spaced electrodes for impedance plethysmography, a piezoelectric pulse sensor or a pulse Doppler sensor for detecting arterial blood flow. By measuring arterial blood flow from an adjacent vein, problems associated with insertion of the sensor into the arterial system may be avoided. The sensor may be used to control the characteristics of an implantable device, such as an implantable pacemaker/cardioverter/defibrillator, an implantable drug dispenser or a rate responsive pacemaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.