System and method for power supply noise reduction

#1. Technical Field

#The present disclosure relates to an electrosurgical system and method and, more particularly, to pulse sequencing to minimize current draw on a shared power supply.

#2. Background of Related Art

#Various embodiments of the present disclosure are described herein with reference to the drawings wherein:

#FIG. 1A is a schematic block diagram of a monopolar electrosurgical system in accordance with an embodiment of the present disclosure;

#FIG. 1B is a schematic block diagram of a bipolar electrosurgical system in accordance with an embodiment of the present disclosure;

#Particular embodiments of the present disclosure are described hereinbelow with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail.

#The generator according to the present disclosure can perform monopolar and bipolar electrosurgical procedures, including vessel sealing procedures. The generator may include a plurality of outputs for interfacing with various electrosurgical instruments (e.g., a monopolar active electrode, return electrode, bipolar electrosurgical forceps, footswitch, etc.). Further, the generator includes electronic circuitry configured for generating radio frequency power specifically suited for various electrosurgical modes (e.g., cutting, blending, division, etc.) and procedures (e.g., monopolar, bipolar, vessel sealing).

#FIG. 1A is a schematic illustration of a monopolar electrosurgical system according to one embodiment of the present disclosure. The system includes an electrosurgical instrument 2 (e.g., monopolar) having one or more electrodes for treating tissue of a patient P (e.g., electrosurgical cutting, ablation, etc.). More particularly, electrosurgical RF energy is supplied to the instrument 2 by a generator 20 via a supply line 4, which is connected to any one of a plurality of active terminals 30a, 30b, 30c, . . . 30m (see FIG. 2) of the generator 20, allowing the instrument 2 to coagulate, seal, ablate and/or otherwise treat tissue. The energy is returned to the generator 20 through a return electrode 6 via a return line 8 at a return terminal 32 (see FIG. 2) of the generator 20. The active terminals 30a, 30b, 30c, . . . 30m and the return terminal 32 are connectors configured to interface with plugs (not explicitly shown) of the instrument 2 and the return electrode 6, which are disposed at the ends of the supply line 4 and the return line 8, respectively.