09935498 cites 428 patents.

A device includes a primary antenna configured to communicate a signal to an antenna of an implantable medical device (IMD). A circulator is coupled to the primary antenna. The circulator enables the signal to pass from a transmitter to the primary antenna. The circulator also enables a backscatter signal from the IMD to pass from the primary antenna to a receiver. A processor coupled to the receiver. The processor configured to determine, based on the backscatter signal, an improved impedance value for a component of the IMD and/or an improved frequency for the signal communicated to the IMD, to improve communication efficiency of the signal to the IMD.

Title
Communication efficiency with an implantable medical device using a circulator and a backscatter signal
Application Number
13/625922
Publication Number
9935498 (B2)
Application Date
September 25, 2012
Publication Date
April 3, 2018
Inventor
Himanshu Joshi
Houston
TX, US
Agent
Foley & Lardner
Assignee
Cyberonics
TX, US
IPC
H02J 5/00
A61N 1/372
A61N 1/378
A61B 5/00
H04B 5/00
H02J 7/02
H02J 50/90
H02J 50/80
H02J 50/70
H02J 50/12
H02J 7/00
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