Method and apparatus for power link detection with implantable medical devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 20, 2001
Grant Date -
N/A
app pub date -
Jan 27, 2000
filing date -
Jan 28, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dual directional coupler is placed in the forward power-delivery path of an external transmitter adapted to transmit power to a receiver of an implantable medical device. The dual directional coupler monitors both the forward and reflected (or reverse) power being sent to, and being reflected from, the implantable device. When a valid power link is established between the external transmitter and the implantable medical device, the reflected power falls below a prescribed threshold. When a valid power link does not exist, or when a previously-established power link is broken, then the reflected power rises above the prescribed threshold. The presence of a valid power link is established by monitoring whether the reflected power is above or below the prescribed threshold. The dual directional coupler may be realized using passive discrete circuit components, such as capacitors and inductors; or alternatively using a pair of small transformers, each having a primary and secondary winding wound on a magnetic toroidal core.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully