Electrosurgical rotating cutting device
First Claim
Patent Images
1. An electrosurgical device comprising:
- a rotating, tissue affecting element having a proximal end and a distal, tissue contacting end having a mechanical cutting device that includes an energy delivering electrode;
a cannula disposed about said rotating tissue affecting element, said cannula having a base portion including at least one electrically conductive contact having a first end coupled to said rotating tissue affecting element and having a second end;
a holder to hold the proximal end of said rotating, tissue affecting element, said holder coupled to the base portion of said cannula;
a remote electrosurgical generator having an output;
a commutator coupled between the output of said remote electrosurgical generator and the second end of at least one of the at least one electrically conductive contacts.
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Abstract
An electrosurgical apparatus includes a rotary, tissue affecting device in the form of one or more rotating blades, a rotating drill, or a rotating shaving/abrading device that serves as an active, energy delivering electrode. The active electrode effectively cuts tissue at the surgical site without relying solely upon the mechanical cutting action of the tissue affecting device. The rotary surgical device can be in a form such that it is suitable for use in open or closed surgery.
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Citations
18 Claims
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1. An electrosurgical device comprising:
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a rotating, tissue affecting element having a proximal end and a distal, tissue contacting end having a mechanical cutting device that includes an energy delivering electrode; a cannula disposed about said rotating tissue affecting element, said cannula having a base portion including at least one electrically conductive contact having a first end coupled to said rotating tissue affecting element and having a second end; a holder to hold the proximal end of said rotating, tissue affecting element, said holder coupled to the base portion of said cannula; a remote electrosurgical generator having an output; a commutator coupled between the output of said remote electrosurgical generator and the second end of at least one of the at least one electrically conductive contacts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16)
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10. An electrosurgical device comprising:
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(a) a cannula having a proximal end and a distal end and a cannula lumen extending from the proximal end to the distal end, said cannula including; (1) a base having an aperture with a longitudinal axis; (2) an outer sheath having a proximal end coupled to said bases a distal end having a sheath aperture therein and a sheath lumen forming at least a portion of the cannula lumen, the sheath lumen extending from the proximal end of said outer sheath to the distal end of said outer sheath with a longitudinal axis of the sheath lumen aligned with the longitudinal axis of the aperture in said base; (b) a rotatable tissue affecting element having a proximal end and a distal end, said tissue affecting element disposed through the aperture in said base and in the cannula lumen, said rotatable tissue affecting element including; (1) a rotating shaft having a proximal end disposed in said base, a distal end disposed in the cannula lumen and a first non-conductive material disposed over predetermined regions of an outer surface of said shaft with at least a portion of the outer surface of the proximal end of said shaft being exposed through the first non-conductive material; (2) a holder assembly securing the proximal end of said shaft; and (3) a tissue treating element disposed on the distal end of said shaft, at least a portion of an outer surface of the tissue treating element being exposed through the first non-conductive material at least a portion of the tissue treating element being exposed through the sheath aperture; and (c) a commutator electrically coupled to the first end of said shaft exposed through the first non-conductive material, the commutator including; (1) an electrically conducting tab having a first end coupled to a first electrical contact terminal and having a second end; (2) an electrically conductive button having a first surface in contact with the second end of said electrically conducting tab; and (3) a wire having a first portion in contact with a second surface of said button and a second portion in contact with said shaft. - View Dependent Claims (11, 12, 13, 14, 15, 17, 18)
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Specification