Electrosurgical generator

#Technical Field

#The present disclosure relates to an electrosurgical generator. More particularly, the present disclosure relates to electrosurgical generators having a gain calibrated RF logarithmic amplifier sensor.

#Description of Related Art

#Various embodiments of the present disclosure are described hereinbelow with references to the drawings, wherein:

#FIG. 1 is a perspective view of an electrosurgical system including a generator, calibration computer system, and electrosurgical instrument(s) according to an embodiment of the present disclosure;

#FIG. 2 is a block diagram of the electrosurgical system depicted in FIG. 1;

#Detailed embodiments of the present disclosure are disclosed herein; however, the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

#FIG. 1 is a perspective view of an electrosurgical system 2 that includes a calibration system 16 according to embodiments of the present disclosure. System 2 includes an electrosurgical generator 8 including electronic circuitry that generates radio frequency power for various electrosurgical procedures (e.g., sealing, cutting, coagulating, or ablating). The electrosurgical generator 8 may include a plurality of connectors to accommodate various types of electrosurgical instruments, e.g., a forceps 4, pencil 5, etc., that are configured to deliver the electrosurgical energy to tissue during a surgical procedure. In the illustrated embodiment, each of the forceps 4 and pencil 5 includes one or more electrodes that are configured to provide electrosurgical energy to treat tissue. For example, forceps 4 may be configured as a bipolar electrosurgical forceps including jaw members 10 and 12 (FIG. 1) having a respective electrode 24, 26 (FIGS. 1 and 2) that are each connectable to the electrosurgical generator 8 via a cable 14 (FIG. 1). Alternately, the forceps 4 may be a monopolar electrosurgical forceps, in which case one of the jaw members 10 and 12 includes an active electrode, and a return electrode is operably supported on a return pad (not shown) that is configured to contact a patient. In the illustrated embodiment, pencil 5 includes an active electrode 13, and a return electrode is operably supported on a return pad (not shown) that is configured to contact a patient. For the remainder of the discussion, electrosurgical system 2 and calibration system 16 are described in terms of use with a bipolar electrosurgical forceps 4.

#FIG. 2 is a block diagram of an electrosurgical system 2, which includes the generator 8, forceps 4 and calibration computer system 16 of FIG. 1. Briefly, generator 8 includes a controller 18, a high voltage power supply 20, and a radio frequency output stage 22, which operate together to generate an electrosurgical signal to be applied to tissue through electrodes 24, 26 of forceps 4. Controller 18 includes a digital signal processor (DSP) 28, a main processor 30, and a memory 32. The controller 18 may be any suitable microcontroller, microprocessor, PLD, PLA, or other digital logic device. Memory 32 may be volatile, non-volatile, solid state, magnetic, or other suitable storage memory.