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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0907262 (1997-08-06) |
| 우선권정보 | GB-0009280 (1996-05-03) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 943 인용 특허 : 3 |
An electrosurgical instrument primarily intended for so-called "underwater" electrosurgery has a radio frequency generator, a handpiece, and an electrode assembly detachably mounted to the handpiece. Different electrode assemblies may be selected according to the surgical procedure to be performed.
An electrosurgical instrument primarily intended for so-called "underwater" electrosurgery has a radio frequency generator, a handpiece, and an electrode assembly detachably mounted to the handpiece. Different electrode assemblies may be selected according to the surgical procedure to be performed. To adapt the generator characteristics for improved electrosurgical performance, each electrode assembly contains an identification element such as a capacitor of unique value which is sensed by the generator. Inside the generator, the sensed capacitor value causes the selection of operating parameters, preferably a nominal generator output power and a peak voltage limit, to suit the selected electrode assembly.
[ What is claimed is:] [1.] An electrosurgical instrument comprising:a first unit including a generator for generating radio frequency power, anda second unit including an electrode assembly, the second unit being detachably connectible to the first unit such that radio frequency power can be convey
[ What is claimed is:] [1.] An electrosurgical instrument comprising:a first unit including a generator for generating radio frequency power, anda second unit including an electrode assembly, the second unit being detachably connectible to the first unit such that radio frequency power can be conveyed to the elctrode assembly,wherein the second unit includes a passive electrical identification component having a parameter of a finite non-zero value indicative of a characteristic of the electrode assembly, andthe first unit includes a sensing circuit including a second passive electrical component and an oscillator, the second component forming a resonant circuit with the identification component when the second unit is connected to the first unit and the oscillator oscillating at the resonant circuit's resonant frequency, the sensing circuit generating an output signal based on the oscillator's oscillating frequency and being representative of the parameter value, the first unit further including a controller connected to the sensing circuit and receiving the output signal, the controller being configured to adjust the output of the generator in response to the output signal from the sensing circuit so as to suit the indicated electrode assembly characteristic.
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