Title: Electrosurgical instrument
Abstract: An electrosurgical instrument, which is used for the treatment of tissue in the presence of an electrically-conductive fluid medium, comprises an instrument shaft (10), and an electrode assembly (12) at one end of the shaft. The electrode assembly (12) comprises a tissue treatment electrode (14) and a return electrode (18) which is electrically insulated from the tissue treatment electrode by means of an insulation member (16). The tissue treatment electrode (14) is exposed at the distal end portion of the instrument (10), and the return electrode (18) has a fluid contact surface spaced proximally from the exposed end of the tissue treatment electrode by the insulation member (16). The exposed end of the tissue treatment electrode (14) is constituted by a plurality of tissue treatment filamentary members made of an electrically-conductive material, the filamentary members being electrically connected to a common electrical supply conductor.
Patent Number: 6,780,180 Issued on 08/24/2004 to Goble, et al.
| Inventors: |
Goble; Nigel M (Nr Cardiff, GB), Goble; Colin Co (South Glamorgan, GB) |
| Assignee: |
Gyrus Medical Limited
(Cardiff,
GB)
|
| Appl. No.:
|
09/521,218 |
| Filed:
|
March 8, 2000 |
Related U.S. Patent Documents
| | | | | |
|
| Application Number | Filing Date | Patent Number | Issue Date | |
| | 318615 | May., 1999 | 6174308 | | |
| | 737302 | | 6027501 | | |
| | 521218 | | | | |
| | 198396 | Nov., 1998 | | | |
| | 701811 | Aug., 1996 | 6015406 | | |
|
|
Foreign Application Priority Data
| | | | |
|
Jun 23, 1995
[GB] | | |
9512889 |
|
Jan 09, 1996
[GB] | | |
9600356 |
|
Apr 15, 1996
[GB] | | |
9600377 |
|
Jun 20, 1996
[GB] | | |
9612996 |
|
|
| Current U.S. Class: |
606/41 ; 607/101 |
| Field of Search: |
606/41-52,33,34,38,27 607/101,102,138 128/DIG.25
|
References Cited [Referenced By]
U.S. Patent Documents