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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0727618 (2003-12-05) |
| 우선권정보 | GB-0230055.6(2002-12-23) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 566 인용 특허 : 7 |
An electrosurgical method and apparatus comprises a probe, at least one temperature sensor, and a controller for generating and controlling electromagnetic energy supplied to the probe. The controller receives signals from the temperature sensor and controls the supply of electromagnetic energy such
An electrosurgical method and apparatus comprises a probe, at least one temperature sensor, and a controller for generating and controlling electromagnetic energy supplied to the probe. The controller receives signals from the temperature sensor and controls the supply of electromagnetic energy such that the temperature of the probe is ramped up and then maintained at a steady state temperature of between 100째 C. and 115째 C. In an equilibration phase, between the ramping up and the steady state temperature, the controller holds the temperature of the probe substantially constant for a period of time to allow the temperature of different parts of the probe to equilibrate.
What is claimed is: 1. A method of forming a lesion in body tissue comprising the steps of providing a probe capable of contacting body tissue to be treated, delivering electromagnetic energy to the probe such as to raise the temperature of the tissue in contact with the probe, measuring the temper
What is claimed is: 1. A method of forming a lesion in body tissue comprising the steps of providing a probe capable of contacting body tissue to be treated, delivering electromagnetic energy to the probe such as to raise the temperature of the tissue in contact with the probe, measuring the temperature of the probe, and controlling the delivery of the electromagnetic energy such that: a) in an initial ramp-up phase, the temperature of the probe is raised rapidly to a first threshold temperature of between 90째 and 105째 C., b) in a second equilibrating phase, the temperature of the probe is held substantially constant for a period of time to allow the temperature of different parts of the probe to equilibrate, and c) in a subsequent treatment phase, the temperature of the probe is raised to a second, higher threshold temperature of between 100째 C. and 115째 C. such that a lesion is formed in the tissue adjacent the probe without the complete removal of electrolytes in the tissue adjacent to the probe through vaporisation. 2. A method of forming a lesion in body tissue according to claim 1, wherein the first threshold temperature is substantially 100째 C. 3. A method of forming a lesion in body tissue according to claim 1, wherein the equilibrating phase takes place for a predetermined period of time. 4. A method of forming a lesion in body tissue according to claim 1, wherein the equilibrating phase takes place until a predetermined time from the start of the ramp-up phase. 5. A method of forming a lesion in body tissue according to claim 1, wherein the second threshold temperature is substantially 110째 C.
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