Electrosurgical instrument
First Claim
1. An electrode assembly for an electrosurgical instrument, the electrode assembly comprising a bipolar cutting blade, and fluid supply lines for directing a cooling fluid to, and from, the cutting blade, the cutting blade comprising first, second and third electrodes, and electrical insulators spacing apart the electrodes, the fluid supply lines being such that cooling fluid enters the cutting blade via the first electrode, passes through an aperture in the second electrode, and exits the cutting blade via the third electrode.
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Accused Products
Abstract
An electrode assembly for an electrosurgical instrument, comprises a bipolar cutting blade, and fluid supply lines for directing a cooling fluid to the cutting blade, the cutting blade comprising first, second and third electrodes, and electrical insulators spacing apart the electrodes, the fluid supply lines being such that cooling fluid enters the cutting blade via the first electrode, passes through an aperture in the second electrode, and exits the cutting blade via the third electrode.
1260 Citations
9 Claims
- 1. An electrode assembly for an electrosurgical instrument, the electrode assembly comprising a bipolar cutting blade, and fluid supply lines for directing a cooling fluid to, and from, the cutting blade, the cutting blade comprising first, second and third electrodes, and electrical insulators spacing apart the electrodes, the fluid supply lines being such that cooling fluid enters the cutting blade via the first electrode, passes through an aperture in the second electrode, and exits the cutting blade via the third electrode.
- 6. An electrosurgical instrument comprising a handpiece, a bipolar cutting blade secured to the handpiece, and fluid supply lines for directing a cooling fluid to, and from, the cutting blade, the cutting blade comprising first, second and third electrodes, and electrical insulators spacing apart the electrodes, the fluid supply lines being such that cooling fluid enters the cutting blade via the first electrode, passes through an aperture in the second electrode, and exits the cutting blade via the third electrode.
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9. An electrosurgical system comprising a bipolar cutting blade, a handpiece to which the cutting blade is secured, an electrosurgical generator for supplying a radio frequency voltage signal to the cutting blade, fluid supply lines for directing a cooling fluid to, and from, the cutting blade, and a pump for driving cooling fluid through the fluid supply lines, the cutting blade comprising first, second and third electrodes, and electrical insulators spacing apart the electrodes, the fluid supply lines being such that cooling fluid enters the cutting blade via the first electrode, passes through an aperture in the second electrode, and exits the cutting blade via the third electrode.
Specification