US 10,893,369 B2
Controlled fitting of an implantable medical device
Stephen Fung, Dundas Valley (AU); Alexander von Brasch, Cremorne (AU); and Tadeusz Jurkiewicz, Rozelle (AU)
Assigned to COCHLEAR LIMITED, Macquarie University (AU)
Filed by COCHLEAR LIMITED, Macquarie University (AU)
Filed on Jun. 2, 2017, as Appl. No. 15/612,379.
Prior Publication US 2018/0352349 A1, Dec. 6, 2018
Int. Cl. H04R 25/00 (2006.01)
CPC H04R 25/65 (2013.01) [H04R 25/606 (2013.01); H04R 2225/67 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an external portion, configured to be held in contact with skin overlying an implantable portion configured to be implanted in a recipient and comprising an implantable magnet, wherein the external portion comprises:
an external induction coil, and
at least one external magnet disposed in the external portion, wherein the at least one external magnet is formed from a low coercivity magnetic material configured to be magnetized to a selected magnetic strength in a clinical setting, wherein the selected magnetic strength optimizes, for the recipient, a transcutaneous coupling with the implantable magnet.