Patent ID: 9655641
Date: 2017-05-23
CPC Classifications: A61B

Claim:
1. A method of treating tissue, comprising: depressing an activation button of the ultrasonic surgical instrument to ultrasonically treat tissue by oscillating a blade of an ultrasonic surgical instrument in contact with tissue, the blade defining a blade conduit extending at least partially therethrough, wherein depressing the activation button also activates a fluid control system to pump cooling fluid through an inflow conduit and into an inlet of the blade conduit to cool the blade, the inflow conduit defined about a waveguide that supports the blade at a distal end thereof; releasing the activation button to deactivate the fluid control system and to cease oscillation of the blade; and receiving a sensed temperature of the blade after releasing the activation button, wherein deactivating the fluid control system includes deactivating the fluid control system once the sensed temperature of the blade is below a lower temperature limit.