Surgical generator for ultrasonic and electrosurgical devices

摘要

In accordance with various embodiments, a surgical generator for providing a drive signal to a surgical device may comprise a first transformer and a second transformer. The first transformer may comprise a first primary winding and a first secondary winding. The second transformer may comprise a second primary winding and a second secondary winding. The surgical generator may further comprise a generator circuit to generate the drive signal. The generator circuit may be electrically coupled to the first primary winding to provide the drive signal across the first primary winding. The surgical generator may also comprise a patient-side circuit electrically isolated from the generator circuit. The patient-side circuit may be electrically coupled to the first secondary winding. Further, the patient-side circuit may comprise first and second output lines to provide the drive signal to the surgical device. In addition, the surgical generator may comprise a capacitor. The capacitor and the second secondary winding may be electrically coupled in series between the first output line and ground.

主权项

1. A surgical generator for providing a drive signal to a surgical device, the generator comprising:
a first transformer comprising a first primary winding and a first secondary winding; a second transformer comprising a second primary winding and a second secondary winding; a generator circuit to generate the drive signal, wherein the generator circuit is electrically coupled to the first primary winding to provide the drive signal across the first primary winding; a patient-side circuit electrically isolated from the generator circuit, wherein the patient-side circuit is electrically coupled to the first secondary winding, and wherein the patient-side circuit comprises first and second output lines to provide the drive signal to the surgical device; and a capacitor, wherein the capacitor and the second secondary winding are connected in series between the first output line and ground, and wherein the second primary winding is connected to the first primary winding in a manner such that an inverse of the drive signal appears across the second primary winding.