Granted Patent
B2
US 12,268,865 · App. 17/779,006 · Granted Apr 8, 2025
Current bias as a control mechanism for electrode operation
Inventors:
Douglas Michael Ackermann (Reno, NV); Michael A. Faltys (San Francisco, CA); James Harris (San Francisco, CA); Kenneth S. Wu (San Francisco, CA)
Assignee:
Presidio Medical, Inc.
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Abstract
Disclosed herein are systems and methods for electrically modulating tissue. Systems can include a current generator; at least one implantable working electrode, the at least one implantable working electrode configured to be in electrical communication with the current generator; at least one indifferent electrode; and a controller configured to signal the current generator to: generate a set of currents with a set of initial polarities to be delivered to the working electrodes; and wherein the at least one indifferent electrode absorbs a bias current which is equal in magnitude and opposite in polarity to a summation of the set of currents.
Claims (33)
1. A system for electrically modulating tissue, comprising:
a current generator;
at least one implantable working electrode, the at least one implantable working electrode configured to be in electrical communication with the current generator;
at least one indifferent electrode; and
a controller configured to signal the current generator to:
generate a set of currents with a set of initial polarities to be delivered to the working electrodes,
wherein the at least one indifferent electrode absorbs a bias current which is equal in magnitude and opposite in polarity to a summation of the set of currents, and
wherein the set of currents comprise ultra low frequency currents.
2. The system of claim 1 , wherein the ultra low frequency currents are less than about 1 Hz.
3. The system of claim 1 , wherein the ultra low frequency currents are less than about 0.1 Hz.
4. The system of claim 1 , wherein the ultra low frequency currents are less than about 0.01 Hz.
5. A system for electrically modulating tissue, comprising:
a current generator;
at least one implantable working electrode, the at least one implantable working electrode configured to be in electrical communication with the current generator;
at least one indifferent electrode; and
a controller configured to signal the current generator to:
generate a set of currents with a set of initial polarities to be delivered to the working electrodes; and
wherein the at least one indifferent electrode absorbs a bias current which is equal in magnitude and opposite in polarity to a summation of the set of currents.
6. The system of claim 5 , wherein the set of currents is sufficient to modulate electrically excitable tissue.
7. The system of claim 5 , wherein the at least one implantable working electrode comprises a high charge capacity material.
8. The system of claim 7 , wherein the high charge capacity material comprises tantalum coated with titanium nitride.
9. The system of claim 5 , wherein the bias current operates in an anodic polarity.
10. The system of claim 5 , wherein the bias current operates in a cathodic polarity.
11. The system of claim 5 , wherein the set of currents are configured to generate the bias current that biases the working electrode voltages cathodically.
12. The system of claim 5 , wherein the set of currents is configured to generate the bias current that biases the working electrode voltages anodically.
13. The system of claim 5 , wherein the set of currents are configured to generate the bias current that biases the indifferent electrode voltages cathodically.
14. The system of claim 5 , wherein the set of currents is configured to generate the bias current that biases the indifferent electrode voltages anodically.
15. The system of claim 5 , comprising at least two working electrodes.
16. The system of claim 5 , wherein the initial polarity of at least one working electrode is cathodic.
17. The system of claim 5 , wherein the initial polarity of at least one working electrode is anodic.
18. The system of claim 5 , wherein the indifferent electrode is a skin surface electrode.
19. The system of claim 5 , wherein the indifferent electrode is a transcutaneous electrode or an implanted electrode.
20. The system of claim 5 , wherein the indifferent electrode comprises titanium.
Assignments (2)
SECURITY INTEREST
Recorded Mar 3, 2026
From: PRESIDIO MEDICAL, INC.
To: INVOPPS MT1, LP, AS COLLATERAL AGENT
Reel/Frame 073961/0144 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 28, 2023
From: ACKERMANN, DOUGLAS MICHAEL; FALTYS, MICHAEL A.; HARRIS, JAMES; WU, KENNETH S.
To: PRESIDIO MEDICAL, INC.
Reel/Frame 064098/0864 →
Continuity (2)
Provisional Application
62939659
· Nov 24, 2019
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