Fine dissection mode for tissue classification

Abstract

A method of controlling the application of energy to a radio frequency (RF) instrument based on a surgical technique may include activating the instrument for a first period T1, during which time a portion of an end effector contacts a tissue, plotting at least two electrical parameters associated with the tissue to classify an amount of the end effector in contact with the tissue, applying a classification algorithm to classify the amount of the end effector in contact with the tissue, and applying an amount of energy to the end effector based on the amount of the end effector in contact withthe tissue. The parameters may include a minimum impedance of the tissue and an amount of time that the impedance slope is about 0. The end effector may contact the tissue with a tip end or with an entire surface.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Patent Application Serial No. 16 / 144,508, filed September 27, 2018, entitled "FINE DISSECTION MODE FOR TISSUE CLASSIFICATION," the disclosure of which is incorporated herein by reference in its entirety. [0003] This application claims U.S. Provisional Patent Application Serial No. 62 / 640,417, filed March 8, 2018, entitled "TEMPERATURE CONTROL IN ULTRASONIC DEVICE AND CONTROL SYSTEM THEREFOR" and EFFECTOR AND CONTROLSYSTEM THEREFOR", the disclosure of each of which is incorporated herein by reference in its entirety. Background technique [0004] In a surgical environment, smart energy devices may need to be within a smart energy architecture environment. Ultrasonic surgical devices, such as ultrasonic scalpels, are used in a variety of applications in surgery because of their unique performance characteristics. Depending on the particular device configuration a...

AI Technical Summary

Problems solved by technology

Additionally, in situations where instruments are disposable or interchangeable with handpieces, ultrasound and electrosurgical generators are limited in their ability to identify the specific instrument configuration being used and optimize control and diagnostic procedures accordingly

Additionally, capacitive coupling between the generator's non-isolated and patient-isolated circuits, especially when using higher voltages and frequencies, can result in patient exposure to unacceptable levels of leakage current

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