Method and apparatus for applying rectilinear biphasic power waveform to a load

摘要

A system and method to deliver a therapeutic quantity of energy to a patient. The system includes a capacitor having a rated energy storage capacity substantially equal to the therapeutic quantity of energy, a boost converter coupled with the capacitor and constructed to release energy from the capacitor at a substantially constant current for a time interval, and an H-bridge circuit coupled with the boost converter and constructed to apply the substantially constant current in a biphasic voltage waveform to the patient. The method includes storing a quantity of energy substantially equal to the therapeutic quantity of energy in a capacitor, releasing the quantity of energy at a relatively constant current during a time interval using a boost converter coupled with the capacitor, and delivering a portion of the quantity energy in a direction to the patient using an H-bridge circuit coupled with the boost converter.

主权项

1. A system to deliver a therapeutic quantity of energy to a patient load, the system comprising:
a capacitor having a rated energy storage capacity; a boost converter coupled with the capacitor and constructed to release energy from the capacitor during a time interval; and an H-bridge circuit coupled with the boost converter and constructed to apply the energy released from the capacitor in a voltage waveform to the patient load, the H-bridge circuit including at least one driver circuit coupled with at least one switch, the at least one driver circuit constructed to receive a control signal and control a magnitude of current in the at least one switch based on the control signal, the at least one driver circuit including a first operational amplifier having a first input coupled with an output terminal of the at least one switch, a second input coupled with the output terminal of the at least one switch via a first resistance, and an output.