US 11,890,101 B2
Calibration of implantable device orientation
Jonathan Bennett Shute, Minnetonka, MN (US); John D. Hatlestad, Maplewood, MN (US); Sunipa Saha, Shoreview, MN (US); and David L Perschbacher, Coon Rapids, MN (US)
Assigned to Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed by Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed on Jul. 27, 2020, as Appl. No. 16/940,250.
Claims priority of provisional application 62/882,288, filed on Aug. 2, 2019.
Prior Publication US 2021/0030295 A1, Feb. 4, 2021
Int. Cl. A61B 5/333 (2021.01); A61B 7/04 (2006.01); A61B 5/00 (2006.01); A61B 5/283 (2021.01); A61B 5/363 (2021.01); A61N 1/365 (2006.01)
CPC A61B 5/333 (2021.01) [A61B 5/0022 (2013.01); A61B 5/283 (2021.01); A61B 5/363 (2021.01); A61B 5/746 (2013.01); A61B 7/04 (2013.01); A61B 2560/0238 (2013.01); A61B 2562/0219 (2013.01); A61B 2562/0223 (2013.01); A61N 1/365 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a calibration circuit configured to:
receive acceleration information sensed from an implantable medical device (IMD);
receive reference acceleration information sensed from a reference device associated with a patient, the reference device separate from the IMD;
determine a spatial relationship between an orientation of the IMD and a reference orientation of the reference device using the received acceleration information and the received reference acceleration information;
determine the orientation of the IMD or calibrate subsequent acceleration information sensed from the IMD using the determined spatial relationship to correct for the orientation of the IMD; and
generate a device diagnostic indicative of one or more of a rotation, a flip, or a migration of the IMD based at least in part on the determined orientation of the IMD.