SYSTEM AND METHOD OF CONTROLLING POWER DELIVERY TO A SURGICAL INSTRUMENT
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0 Petitions
Accused Products
Abstract
A thermal surgical instrument having a system to control the delivery of power from an energy source to active element located on a tip. The system for controlling delivery to the tip may include a control algorithm which uses on or more measurements, such as tip current, SWR, and rapid changes in reflected power, to manage power without affecting cutting efficacy, and in a manner that may be imperceptible by a surgeon. The system may utilize a state machine to determine the current environment in which the tip may be in. Power delivered to the tip may be selectively managed according to a fixed power index or a repeatedly executed power profile.
18 Citations
36 Claims
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1-21. -21. (canceled)
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22. A method of controlling a thermal cutting or coagulating instrument, comprising:
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delivering oscillating electrical energy to a thermal element; sensing a behavior characteristic associated with the thermal element; and adjusting the delivery of oscillating electrical energy in response to the sensed behavior characteristic of the thermal element. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for regulating a thermal surgical instrument comprising:
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selecting a body having a thermal element disposed thereon and disposed in communication with an energy source so as to receive oscillating electrical energy to heat the thermal element; and sensing a change in the impedance of the thermally active element and generating a signal to adjust the oscillating electrical energy received by the thermally actively element. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification