IP Library › Granted Patent US 12,268,875
Granted Patent B2
US 12,268,875 · App. 18/612,591 · Granted Apr 8, 2025

Paresthesia-free spinal cord stimulation occurring at lower frequencies and sweet spot searching using paresthesia

Inventors: Que T. Doan (West Hills, CA); Jianwen Gu (Valencia, CA); Ismael Huertas Fernandez (Madrid, ES); Rosana Esteller (Santa Clarita, CA); Michael A. Moffitt (Saugus, CA)
Assignee: Boston Scientific Neuromodulation Corporation
A61N1/36062A61N1/0551A61N1/36021A61N1/36071A61N1/36185A61N1/37247A61N1/06A61N1/36132A61N1/37235A61N1/37252
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Quick Facts
Patent No.
US 12,268,875
App. No.
18/612,591
Granted
Apr 8, 2025
Kind
B2
Abstract

Methods and systems for testing and treating spinal cord stimulation (SCS) patients are disclosed. Patients are eventually treated with sub-perception (paresthesia free) therapy. However, supra-perception stimulation is used during “sweet spot searching” during which active electrodes are selected for the patient. This allows sweet spot searching to occur much more quickly and without the need to wash in the various electrode combinations that are tried. After selecting electrodes using supra-perception therapy, therapy is titrated to sub-perception levels using the selected electrodes. Such sub-perception therapy has been investigated using pulses at or below 10 kHz, and it has been determined that a statistically significant correlation exists between pulse width (PW) and frequency (F) in this frequency range at which SCS patients experience significant reduction in symptoms such as back pain. Beneficially, sub-perception stimulation at such low frequencies significantly lowers power consumption in the patient's neurostimulator.

Claims (31)

1. A method for providing sub-perception stimulation to a patient having an implantable spinal cord stimulator comprising a plurality of electrodes in an electrode array, the method comprising in order:

programming a first amplitude for the implantable spinal cord stimulator;

providing supra-perception biphasic stimulation pulses at a frequency via one or more first of the plurality of electrodes and one or more second of the plurality of electrodes, wherein the supra-perception biphasic stimulation pulses have first and second phases,

wherein during the first phases the one or more first electrodes provide the first amplitude in sum as an anodic current and the one or more second electrodes provide the first amplitude in sum as a cathodic current,

wherein during the second phases the one or more second electrodes provide the first amplitude in sum as an anodic current and the one or more first electrodes provide the first amplitude in sum as a cathodic current;

programming a second amplitude for the implantable spinal cord stimulator, wherein the second amplitude is lower than the first amplitude;

providing sub-perception biphasic stimulation pulses at the frequency via the one or more first electrodes and the one or more second electrodes, wherein the sub-perception biphasic stimulation pulses have third and fourth phases,

wherein during the third phases the one or more first electrodes provide the second amplitude in sum as an anodic current and the one or more second electrodes provide the second amplitude in sum as a cathodic current, and

wherein during the fourth phases the one or more second electrodes provide the second amplitude in sum as an anodic current and the one or more first electrodes provide the second amplitude in sum as a cathodic current.

2. The method of claim 1 , wherein the frequency is 130 Hz or less.

3. The method of claim 1 , wherein the frequency is 90 Hz.

4. The method of claim 1 , wherein a charge of the first phase equals a charge of the second phase for each supra-perception biphasic stimulation pulse, and wherein a charge of the third phase equals a charge of the fourth phase for each sub-perception biphasic stimulation pulse.

5. The method of claim 1 , wherein a duration of the first phase equals a duration of the second phase for each supra-perception biphasic stimulation pulse, and wherein a duration of the third phase equals a duration of the fourth phase for each supra-perception biphasic stimulation pulse.

6. The method of claim 1 , wherein the supra-perception biphasic stimulation pulses are symmetric, and wherein the sub-perception biphasic stimulation pulses are symmetric.

7. The method of claim 1 , further comprising, before programming the second amplitude, determining that the supra-perception biphasic stimulation pulses favorably treats a pain symptom of the patient.

8. The method of claim 7 , wherein determining that the supra-perception biphasic stimulation pulses favorably treats the pain symptom of the patient comprises receiving feedback from the patient.

9. The method of claim 1 , wherein programming the first and second amplitudes for the implantable spinal cord stimulator comprises entering the first and second amplitudes into an external system in communication with the implantable stimulator device.

10. The method of claim 1 , wherein the plurality of electrodes are located on one or more leads implanted in a spinal column of the patient.

11. The method of claim 1 , wherein the implantable spinal cord stimulation device is programmed during a programming session, and wherein the sub-perception biphasic stimulation pulses wash in for a period of one hour or less during the programming session to provide pain relief to the patient without paresthesia.

12. A system, comprising:

an external device configured to program an implantable spinal cord stimulator comprising a plurality of electrodes in an electrode array, wherein the external device is configured to:

receive information comprising a first amplitude,

program the implantable spinal cord stimulator to provide supra-perception biphasic stimulation pulses at a frequency via one or more first of the plurality of electrodes and one or more second of the plurality of electrodes, wherein the supra-perception biphasic stimulation pulses have first and second phases,

wherein during the first phases the one or more first electrodes provide the first amplitude in sum as an anodic current and the one or more second electrodes provide the first amplitude in sum as a cathodic current,

wherein during the second phases the one or more second electrodes provide the first amplitude in sum as an anodic current and the one or more first electrodes provide the first amplitude in sum as a cathodic current,

receive information comprising a second amplitude, wherein the second amplitude is lower than the first amplitude,

program the implantable spinal cord stimulator to provide sub-perception biphasic stimulation pulses at the frequency via the one or more first electrodes and the one or more second electrodes, wherein the sub-perception biphasic stimulation pulses have third and fourth phases,

wherein during the third phases the one or more first electrodes provide the second amplitude in sum as an anodic current and the one or more second electrodes provide the second amplitude in sum as a cathodic current, and

wherein during the fourth phases the one or more second electrodes provide the second amplitude in sum as an anodic current and the one or more first electrodes provide the second amplitude in sum as a cathodic current.

13. The system of claim 12 , wherein the frequency is 130 Hz or less.

14. The system of claim 12 , wherein the supra-perception biphasic stimulation pulses are symmetric, and wherein the sub-perception biphasic stimulation pulses are symmetric.

Continuity (6)
Continuation 17089538 · Nov 4, 2020
Continuation 16806065 · Mar 2, 2020
Continuation 16100904 · Aug 10, 2018
Provisional Application 62693543 · Jul 3, 2018
Provisional Application 62544656 · Aug 11, 2017
Related Publication 20240226558A1 · Jul 11, 2024
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