Charge-balancing during electrical stimulation

摘要

In some examples, a device for delivering electrical stimulation to a medical patient includes an electrical stimulation generator, a coupling circuit, and a processing module. The electrical stimulation generator is configured to generate electrical stimulation. The coupling circuit includes a first node connected to the electrical stimulation generator, a second node configured to deliver the electrical stimulation to the patient, and a capacitor. The coupling circuit is configured to operate in a first state to couple the capacitor between the first and second nodes in a first orientation and operate in a second state to couple the capacitor between the first and second nodes in a second orientation that is opposite to the first orientation. The processing module is configured to set the state of the coupling circuit to one of the first and second states.

主权项

1. A device for delivering electrical stimulation to a patient, the device comprising;
a capacitor; and circuitry configured to:
deliver an electrical stimulation current of a first polarity to the patient via the capacitor; andswitch a terminal of the capacitor into which the electrical stimulation current flows at least twice during delivery of the electrical stimulation current of the first polarity.