US 12,115,377 B2
External charger for an implantable medical device for adjusting charging power based on determined position using at least one sense coil
Daniel Aghassian, Glendale, CA (US); Thomas W. Stouffer, Chatsworth, CA (US); Jonathan Larcom, Simi Valley, CA (US); and Gaurav Gupta, Valencia, CA (US)
Assigned to Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed by Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed on Sep. 15, 2022, as Appl. No. 17/932,567.
Application 17/932,567 is a continuation of application No. 15/616,524, filed on Jun. 7, 2017, granted, now 11,471,692.
Claims priority of provisional application 62/350,516, filed on Jun. 15, 2016.
Prior Publication US 2023/0011211 A1, Jan. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/378 (2006.01); A61N 1/36 (2006.01); A61N 1/372 (2006.01); H01F 27/28 (2006.01); H01F 38/14 (2006.01); H02J 7/00 (2006.01); H02J 50/00 (2016.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01); H02J 50/90 (2016.01); A61N 1/05 (2006.01)
CPC A61N 1/3787 (2013.01) [A61N 1/36125 (2013.01); A61N 1/36142 (2013.01); A61N 1/37229 (2013.01); H01F 27/2823 (2013.01); H01F 38/14 (2013.01); H02J 7/00034 (2020.01); H02J 50/005 (2020.01); H02J 50/12 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02); A61B 2560/0219 (2013.01); A61N 1/0534 (2013.01); A61N 1/0551 (2013.01); H01F 27/2804 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An external charger for wirelessly providing energy to an implantable medical device (IMD), comprising:
a charging coil configured when energized by a drive signal to produce a magnetic field with a power to wirelessly provide energy to the IMD as a coupled system;
a sense coil, wherein the sense coil is configured to be induced by the magnetic field with an induced signal affected by a position of the charging coil with respect to the IMD; and
control circuitry configured to determine a plurality of parameters from the induced signal, and to use the plurality of parameters to adjust the power of the magnetic field.