Cutting and coagulation apparatus for surgery
First Claim
1. A method of regulating the current applied to a high-frequency current tissue-cutting device having a thin probe acting as one electrode, a second electrode, and a generator of high-frequency current applying said current to said electrodes, while cutting tissue which tissue has the property of steaming off when heated to high temperature, said method comprising:
- applying current and voltage of the generator to the electrodes to cause an arc to ignite and burn at the probe, detecting the existence of the arc and measuring its volume, and adjusting the current to the probe to maintain the arc at a predetermined volume.
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Accused Products
Abstract
A device and system for the cutting and/or coagulation of human tissue with the use of high frequency currents. This invention is used to cut materials similar to the human tissue which can emit steam or gassy products when sufficiently heated. It controls the extent of the arc generated during the cutting operation, and controls the heat generated during the coagulating operation, both of these for the purpose of minimizing formation of harmful forms of albumen.
277 Citations
17 Claims
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1. A method of regulating the current applied to a high-frequency current tissue-cutting device having a thin probe acting as one electrode, a second electrode, and a generator of high-frequency current applying said current to said electrodes, while cutting tissue which tissue has the property of steaming off when heated to high temperature, said method comprising:
- applying current and voltage of the generator to the electrodes to cause an arc to ignite and burn at the probe, detecting the existence of the arc and measuring its volume, and adjusting the current to the probe to maintain the arc at a predetermined volume.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for cutting tissue with the use of a high-frequency electric current, comprising:
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a generator of high-frequency electric current; a thin probe for making a small area contact with tissue to be cut, acting as a first electrode; a second electrode; conductive lead means connecting the generator to the electrodes; indicating means for indicating the existence and volume of an electric arc between the probe and the tissue; and control means to adjust the current supplied to the probe by the generator to a level to determine and maintain the volume of the arc at a predetermined level. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification