US 12,402,936 B2
Electrosurgical system with tissue and maximum current identification
Ryan Pope, Ladera Ranch, CA (US); Melissa Brodsky, Long Beach, CA (US); Vincent Rodriguez, Rancho Santa Margarita, CA (US); Molly Marbut, Schertz, TX (US); Kevin Siazon, Las Vegas, NV (US); and Emily Koehler, Raleigh, NC (US)
Assigned to Applied Medical Resources Corporation, Rancho Santa Margarita, CA (US)
Filed by Applied Medical Resources Corporation, Rancho Santa Margarita, CA (US)
Filed on Apr. 23, 2024, as Appl. No. 18/643,078.
Application 18/643,078 is a continuation of application No. 17/138,418, filed on Dec. 30, 2020, granted, now 11,963,711.
Claims priority of provisional application 62/955,758, filed on Dec. 31, 2019.
Prior Publication US 2024/0285335 A1, Aug. 29, 2024
Int. Cl. A61B 18/12 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 18/1206 (2013.01); A61B 2018/00297 (2013.01); A61B 2018/0063 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrosurgical system for fusing or sealing tissue, the system comprising:
an electrosurgical instrument configured to transmit RF energy to a tissue being fused or sealed; and
an electrosurgical generator configured to generate the RF energy, wherein the electrosurgical instrument is connected to the electrosurgical generator, wherein a voltage level for the RF energy being generated is based on identifying a tissue type of the tissue being fused or sealed, wherein the electrosurgical generator comprises:
an RF amplifier that drives the voltage level of the RF energy being generated, and
a controller configured to:
initiate a voltage spike configured to heat the tissue to a temperature for desiccation, the voltage spike raising the voltage level to a maximum voltage level,
identify the tissue type of the tissue being fused or sealed,
initiate a voltage drop to minimize overheating of the tissue, the voltage drop decreasing the voltage level from the maximum voltage level to a pre-determined voltage drop level, the voltage drop based on the tissue type of the tissue identified, and
initiate a voltage ramp and subsequent hold to maintain the temperature for desiccation, the voltage ramp and subsequent hold is set at an intermediate voltage level that is between the maximum voltage level and the pre-determined voltage drop level.