US 12,064,632 B2
Method and device for feedback control of neural stimulation
Peter Scott Vallack Single, Artarmon (AU); and Dean Michael Karantonis, Artarmon (AU)
Assigned to Saluda Medical Pty Ltd, Macquarie Park (AU)
Filed by Saluda Medical Pty Ltd, Artarmon (AU)
Filed on Aug. 8, 2022, as Appl. No. 17/818,193.
Application 17/818,193 is a continuation of application No. 17/724,652, filed on Apr. 20, 2022, granted, now 11,464,980.
Application 17/724,652 is a continuation of application No. 17/532,725, filed on Nov. 22, 2021, granted, now 11,344,729, issued on May 31, 2022.
Application 17/532,725 is a continuation of application No. 16/669,393, filed on Oct. 30, 2019, granted, now 11,219,766, issued on Jan. 11, 2022.
Application 16/669,393 is a continuation of application No. 15/535,008, granted, now 10,500,399, issued on Dec. 10, 2019, previously published as PCT/AU2015/050787, filed on Dec. 11, 2015.
Claims priority of application No. 2014905031 (AU), filed on Dec. 11, 2014.
Prior Publication US 2023/0078685 A1, Mar. 16, 2023
Int. Cl. A61N 1/36 (2006.01); A61N 1/05 (2006.01)
CPC A61N 1/36139 (2013.01) [A61N 1/0551 (2013.01); A61N 1/36062 (2017.08); A61N 1/36071 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method of controlling a neural stimulus, the method comprising:
applying the neural stimulus to a neural pathway of a patient in order to give rise to an evoked action potential on the neural pathway, the stimulus being defined by at least one stimulus parameter, wherein the stimulus parameter is stimulus current amplitude;
measuring a neural compound action potential response evoked by the stimulus, and deriving from the measured evoked response a feedback variable, wherein the feedback variable is an amplitude measure of the evoked compound action potential (ECAP);
completing a feedback loop by using the feedback variable to control the at least one stimulus parameter value; and
determining an estimate of a characteristic of a current ECAP growth curve from the stimulus current amplitude and the measured ECAP amplitude.