US 10,376,698 B2
Systems and methods for gradually adjusting a control parameter associated with a cochlear implant system
Abhijit Kulkarni, Newbury Park, CA (US); and Leonid M. Litvak, Los Angeles, CA (US)
Assigned to Advanced Bionics AG, Staefa (CH)
Appl. No. 15/500,494
Filed by ADVANCED BIONICS AG, Staefa (CH)
PCT Filed Aug. 14, 2014, PCT No. PCT/US2014/051087
§ 371(c)(1), (2) Date Jan. 30, 2017,
PCT Pub. No. WO2016/024978, PCT Pub. Date Feb. 18, 2016.
Prior Publication US 2017/0224992 A1, Aug. 10, 2017
Int. Cl. A61N 1/36 (2006.01); A61N 1/372 (2006.01); H04R 25/00 (2006.01)
CPC A61N 1/36036 (2017.08) [A61N 1/37241 (2013.01); A61N 1/37264 (2013.01); H04R 25/70 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cochlear implant system comprising:
a cochlear implant configured to be implanted within a patient; and
a sound processor configured to
receive, from a fitting system during a fitting session,
a command that sets a most comfortable level (“M level”) to an initial value, the initial value of the M level representing a first stimulation current level required for the cochlear implant to produce a sensed perception of sound that is comfortably loud for the patient during the fitting session, and
a target value for the M level, the target value for the M level representing a second stimulation current level that is greater than the first stimulation current level and that is required for the cochlear implant to produce a sensed perception of sound that is comfortably loud for the patient at a time subsequent to the fitting session;
store an adaption time course that specifies a plurality of time increments and a series of values between the initial value and the target value;
detect a decoupling of the sound processor from the fitting system, the decoupling resulting in the sound processor being in a non-fitting state;
gradually adjust, while the sound processor is in the non-fitting state and subsequent to the fitting session, the M level from the initial value towards the target value in accordance with the adaption time course; and
direct the cochlear implant to apply stimulation having the gradually adjusted M level to the patient;
wherein the sound processor is configured to gradually adjust the M level from the initial value towards the target value by:
tracking an elapsing of time beginning with the decoupling of the sound processor from the fitting system; and
incrementally adjusting the M level to a next different value included in the series of values in response to an occurrence, within the elapsing of time, of each time increment included in the plurality of time increments.