Bipolar electrosurgical scissors
First Claim
Patent Images
1. An electrosurgical instrument comprising:
- first and second permanent blade members, each blade member having a tissue engaging surface;
said blade members being relatively movable between open and closed positions;
a cartridge member removably carried by one of said blade members, said cartridge including a tissue engaging surface for engaging tissue positioned between said blade members as said blade members move toward their closed position;
said tissue engaging surface of said cartridge member including an electrode, said cartridge member further comprising an electrically insulative material insulating said electrode from said blade member carrying said cartridge member;
first and second electrical conductors connected respectively to said electrode and to a selected one of said blade members, for communication with the terminals of an RF power supply.
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Accused Products
Abstract
An electrosurgical instrument, such as a scissors, in which the handle and blade members are of a conventional construction. Each blade member supports a detachable cartridge member made of an insulating material and supporting at least one electrode. The cartridge members do not interfere with the cutting engagement of the blade members. Each cartridge member can also permit relative movement between its electrode and associated cutting edge from a first position in which the electrodes are between the cutting edges (when the blades are open) to a second position in which each electrode is behind its respective cutting edge (as the blades are closed).
511 Citations
32 Claims
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1. An electrosurgical instrument comprising:
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first and second permanent blade members, each blade member having a tissue engaging surface; said blade members being relatively movable between open and closed positions; a cartridge member removably carried by one of said blade members, said cartridge including a tissue engaging surface for engaging tissue positioned between said blade members as said blade members move toward their closed position; said tissue engaging surface of said cartridge member including an electrode, said cartridge member further comprising an electrically insulative material insulating said electrode from said blade member carrying said cartridge member; first and second electrical conductors connected respectively to said electrode and to a selected one of said blade members, for communication with the terminals of an RF power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 31, 32)
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20. A cartridge for removable attachment to a permanent blade of surgical scissors, said cartridge comprising:
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a base portion and at least one electrode carried on said base portion; a tissue contacting surface disposed so that when the cartridge is mounted on a scissor blade, the tissue contacting surface will contact the tissue being cut as the scissor blades close on it; said electrode defining at least a portion of said tissue contacting surface of said cartridge; and said base portion comprising an electrically insulative material for insulating said electrode from the blade of a scissors when mounted thereon. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification