Patent ID: 9421060
Filing Date: 2016-08-23
CPC Classification: A61B,F16B,H02J,Y10T

Claim Text:
1. A medical instrument comprising: a housing and a handle for gripping by a user, an end effector coupled to the handle and having at least one electrical contact; a battery; a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal having a predetermined frequency and phase and to provide the RF drive signal to the at least one electrical contact, wherein the RF generation circuit is supported by the housing; and a sampling circuit; wherein the RF generation circuit comprises a resonant circuit comprising at least one inductive element constructed of litz wire; wherein the sampling circuit is configured to sample a sensed voltage or current signal at a sampling frequency that varies in synchronism with the frequency and phase of the RF drive signal.