Claims
- 1. An electrosurgical apparatus comprising:
- a high frequency power generator having an output frequency of the order of 15 to 30 megahertz,
- a handpiece including electrode mounting means for replaceably mounting an electrode thereon,
- a connecting wire connected between said generator and said handpiece,
- a high frequency transformer, said generator, said connecting wire and said transformer being connected to provide power to said electrode mounting means of said handpiece and to an electrode mounted therein,
- the length of the connecting wire being so adapted to the output frequency of said generator that the transfer characteristic of said connecting wire provides a substantially true ohmic transfer of loads on an electrode mounted on said electrode mounting means to the generator in and about a balance load point to provide automatic regulation of power delivered to tissue being cut by the electrode in response to the instantaneous load resistance experienced by the electrode.
- 2. An apparatus as defined in claim 1, wherein said transformer is included in said handpiece.
- 3. An apparatus as defined in claim 2, wherein said connecting wire is a shielded conductor of a coaxial cable, the shielding conductor of said coaxial cable being electrically connected to a tubular casing of electrically conducting material, said tubular casing surrounding at least a part of said handpiece.
- 4. An apparatus as defined in claim 2, wherein the effective length of said connecting wire is adapted to one quarter of a wave length of the output frequency of said generator.
- 5. An apparatus as defined in claim 1, wherein said connecting wire is a shielded conductor of a coaxial cable, the shielding conductor of said coaxial cable being electrically connected to a tubular casing of electrically conducting material, said tubular casing surrounding at least a part of said handpiece.
- 6. An apparatus as defined in claim 1, wherein the effective length of said connecting wire is adapted to one quarter of a wave length of the output frequency of said generator.
Priority Claims (1)
Number |
Date |
Country |
Kind |
15/81 |
Jan 1981 |
DKX |
|
Parent Case Info
This application is a continuation of application Ser. No. 336,295, filed Dec. 13, 1981, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2383675 |
Nov 1978 |
FRX |
1513057 |
Jun 1978 |
GBX |
Non-Patent Literature Citations (1)
Entry |
"The Feed-Backs of Servotome", pp. 1-4. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
336295 |
Dec 1981 |
|