US 11,684,387 B2
Methods and ultrasonic devices and systems for vessel sealing
David J. Van Tol, Boulder, CO (US); Kelly E. Goodman, Boulder, CO (US); Keith W. Malang, Longmont, CO (US); and Christopher T. Tschudy, Arvada, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Sep. 28, 2020, as Appl. No. 17/34,443.
Claims priority of provisional application 62/939,763, filed on Nov. 25, 2019.
Prior Publication US 2021/0153888 A1, May 27, 2021
Int. Cl. A61B 17/32 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 17/320092 (2013.01) [A61B 2017/00026 (2013.01); A61B 2017/320095 (2017.08); A61B 2018/00648 (2013.01); A61B 2018/00702 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for sealing a vessel comprising:
supplying electrical energy to an ultrasonic surgical instrument having an end effector and a transducer coupled to the end effector, when the end effector is grasping the vessel;
sensing parameters of the vessel when the end effector achieves a predetermined velocity;
estimating a size of the vessel based on the sensed parameters;
controlling the electrical energy based on maintaining a predetermined initial heating rate of heating the vessel until a predetermined amount of energy corresponding to the estimated size of the vessel has been delivered; and
controlling the electrical energy to seal the vessel based on a predetermined heating rate curve of heating the vessel after the predetermined amount of energy corresponding to the estimated size of the vessel has been delivered.