US 12,722,011 B2
Algorithm for adjusting a compliance voltage in a stimulator device having neural sensing capability
Pujitha Weerakoon, Valencia, CA (US); and Goran N. Marnfeldt, Valencia, CA (US)
Assigned to Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed by Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed on Jan. 10, 2023, as Appl. No. 18/152,636.
Claims priority of provisional application 63/266,806, filed on Jan. 14, 2022.
Prior Publication US 2023/0248978 A1, Aug. 10, 2023
Int. Cl. A61N 1/36 (2006.01)
CPC A61N 1/36139 (2013.01) [A61N 1/36153 (2013.01); A61N 1/36157 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for operating a stimulator device having a plurality of electrodes comprising at least one sensing electrode, at least two stimulation electrodes, and at least one common mode electrode, the method comprising:
receiving signals from a patient's tissue at the at least one sensing electrode, and providing the received signal to at least one input of a sense amp circuit;
providing a common mode voltage to the tissue at the at least one common mode electrode, wherein a tissue current at the common mode electrode is limited to a programmable first magnitude;
executing a stimulation program to provide a stimulation current of a prescribed amplitude between the at least two stimulation electrodes and through the patient's tissue using stimulation circuitry powered by a compliance voltage;
generating at least one first control signal indicating whether the tissue current has reached the first magnitude;
generating at least one second control signal indicating whether a second magnitude at the at least one input is appropriate for sensing the signals from the patient's tissue;
generating at least one third control signal indicating whether the stimulation current is provided by the stimulation circuitry at the prescribed amplitude without loading; and
executing an algorithm in the stimulator device, wherein the algorithm is configured to use the at least one first control signal, the at least one second control signal, and the at least one third control signal to adjust the compliance voltage.
 
17. A stimulator device having a plurality of electrodes comprising at least one sensing electrode, at least two stimulation electrodes, and at least one common mode electrode, the device comprising:
a sense amp circuit configured to receive at at least one input signals from a patient's tissue at the at least one sensing electrode;
tissue driver circuitry configured to provide a common mode voltage to the tissue at the at least one common mode electrode, wherein a tissue current at the common mode electrode is limited to a programmable first magnitude;
stimulation circuitry configured to execute a stimulation program to provide a stimulation current of a prescribed amplitude between the at least two stimulation electrodes and through the patient's tissue, wherein the stimulation circuitry is powered by a compliance voltage;
first measurement circuitry configured to generate at least one first control signal indicating whether the tissue current has reached the first magnitude;
second measurement circuitry configured to generate at least one second control signal indicating whether a second magnitude at the at least one input is appropriate for sensing the signals from the patient's tissue;
third measurement circuitry configured to generate at least one third control signal indicating whether the stimulation current is provided by the stimulation circuitry at the prescribed amplitude without loading; and
control circuitry programmed with an algorithm, wherein the algorithm is configured to use the at least one first control signal, the at least one second control signal, and the at least one third control signal to adjust the compliance voltage.