Electrosurgical apparatus and methods for ablating tissue
First Claim
1. An electrosurgical instrument for removing tissue from a target site within or on a patient'"'"'s body comprising:
- (a) a shaft having proximal and distal end portion and an active screen electrode on the distal end portion;
(b) a return electrode arranged on the shaft spaced from the screen electrode;
(c) at least one electrical connector extending through the shaft that connects the active electrode with a high frequency power supply;
(d) at least one electrical coupling member adapted to secure the active screen electrode to the shaft and to electrically couple the screen electrode to the a least one electrical connector; and
(e) an aspiration lumen within the shaft having a distal opening coupled to the single active electrode wherein the screen electrode inhibits clogging of the aspiration lumen.
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Accused Products
Abstract
Electrosurgical methods and apparatus for the controlled ablation of tissue from a target site of a patient. The instrument includes a shaft having proximal and distal end portion and an active screen electrode on the distal end portion; a return electrode arranged on the shaft spaced from the screen electrode; at least one electrical connector extending through the shaft that connects the active electrode with a high frequency power supply; at least one electrical coupling member (such as a ball wire) adapted to secure the active screen electrode to the shaft and to electrically couple the screen electrode to the at least one electrical connector; and an aspiration lumen within the shaft having a distal opening coupled to the single active electrode wherein the screen electrode inhibits clogging of the aspiration lumen.
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Citations
21 Claims
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1. An electrosurgical instrument for removing tissue from a target site within or on a patient'"'"'s body comprising:
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(a) a shaft having proximal and distal end portion and an active screen electrode on the distal end portion;
(b) a return electrode arranged on the shaft spaced from the screen electrode;
(c) at least one electrical connector extending through the shaft that connects the active electrode with a high frequency power supply;
(d) at least one electrical coupling member adapted to secure the active screen electrode to the shaft and to electrically couple the screen electrode to the a least one electrical connector; and
(e) an aspiration lumen within the shaft having a distal opening coupled to the single active electrode wherein the screen electrode inhibits clogging of the aspiration lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An electrosurgical instrument for removing tissue from a target site within or on a patient'"'"'s body comprising:
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(a) a shaft having proximal and distal end portion and an active screen electrode on the distal end portion;
(b) a return electrode arranged on the shaft spaced from the screen electrode;
(c) at least one electrical connector extending through the shaft, said at least one electrical connector being electrically coupled to said active electrode and to a high frequency power supply; and
(d) an aspiration lumen within the shaft having a distal opening coupled to the single active electrode wherein the screen electrode inhibits clogging of the aspiration lumen.
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Specification