Method and apparatus for determination of physiological parameters using cervical impedance
US9814395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2012 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Feb 2, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7275
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Implanted electrodes can be used to deliver electrical stimulation signals to areas near blood vessels, nerves, or other internal body locations. In an example, an electrode can be implanted in a cervical location and can be used to measure dimensional changes in an artery using impedance plethysmography. Measured artery dimensional changes can be used to determine one or more physiological parameters associated with a patient's health status, such as pulse transit time, relative pulse pressure, or aterial compliance, among others. These parameters can be used to monitor a patient health status or to modulate a patient's therapy, among other uses. In some examples, an electrode configured to deliver an electrostimulation signal to nerve tissue can be used to provide non-neurostimulating electrical stimulation plethysmography signals near a blood vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.