Electrosurgical instrument calorimeter and method for measuring an electromagnetic power output of an electrosurgical instrument
AssigneeCreo Medical Limited
InventorsAlex Greenhalgh, John Bishop, Christopher Hancock
Life of this patent
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Abstract
The invention relates to an electrosurgical instrument calorimeter for measuring an electromagnetic energy output of an electrosurgical instrument powered by a generator, comprising a calorimeter cell for containing an absorption material configured to absorb electromagnetic radiation, at least one temperature sensor configured to measure a temperature of the absorption material, and a support structure configured to hold the electrosurgical instrument in such a position that electromagnetic radiation emitted by the electrosurgical instrument is absorbed by the absorption material.
Claims28
An electrosurgical instrument calorimeter for measuring an electromagnetic energy output of an electrosurgical instrument powered by a generator, the electrosurgical instrument including an instrument tip configured to radiate the electromagnetic energy into a target tissue at a target site for obtaining a treatment effect, the electrosurgical instrument calorimeter comprising
- a calorimeter cell for containing an absorption material configured to absorb electromagnetic radiation,
- at least one temperature sensor configured to measure a temperature of the absorption material, and
- a support structure configured to hold the electrosurgical instrument in such a position that the instrument tip is inserted in the absorption material such that electromagnetic radiation emitted by the instrument tip is absorbed by the absorption material.
A method for measuring an electromagnetic energy output of an electrosurgical instrument powered by a generator, the electrosurgical instrument including an instrument tip configured to radiate the electromagnetic energy into a target tissue at a target site for obtaining a treatment effect, the method comprising steps of:
- a) filling a predetermined amount of an absorption material in a calorimeter cell of an electrosurgical instrument calorimeter, the absorption material configured to absorb electromagnetic radiation,
- b) placing the electrosurgical instrument in such a position that the instrument tip is inserted in the absorption material such that electromagnetic radiation emitted by the electrosurgical instrument is absorbed by the absorption material,
- c) operating the electrosurgical instrument for a predetermined time span to emit electromagnetic radiation into the absorption material,
- d) measuring a temperature change of the absorption material, and
- e) calculating an energy of the electromagnetic radiation emitted by the electrosurgical instrument based on the measured temperature change.
Dependencies are inferred from the claim text.