SMART BLADE TECHNOLOGY TO CONTROL BLADE INSTABILITY

A method of controlling the temperature of an ultrasonic blade between two temperature set points includes applying a first power level to an ultrasonic transducer to set an ultrasonic blade temperature to a first target temperature T1, monitoring a phase angle ϕ between voltageand currentsignals ap...

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Bibliographic Details
Main Authors NOTT, CAMERON R, JAYME, MADELEINE C, FALLER, CRAIG N
Format Patent
LanguageEnglish
Polish
Published 27.05.2024
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:A method of controlling the temperature of an ultrasonic blade between two temperature set points includes applying a first power level to an ultrasonic transducer to set an ultrasonic blade temperature to a first target temperature T1, monitoring a phase angle ϕ between voltageand currentsignals applied to the transducer, inferring the temperature of the blade based on the phase angle ϕ, determining that a transection process is complete, and applying a second power level to the transducer to set the blade temperature to a second target temperature T2. The transducer may be coupled to the blade via an ultrasonic waveguide. The first target temperature may be optimized for vessel sealing and the second target temperature may be optimized for clamp arm pad life. The control circuit may determine that transection is complete by determining that the ultrasonic blade contacts the clamp arm pad.
Bibliography:Application Number: PL20190161243T