Bipolar electrosurgical scissors
First Claim
1. A bipolar electrosurgical scissors for use in treating biological tissue, comprising:
- a first scissor blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge being electrically neutral;
a second scissor blade pivotally coupled to the first blade, the second blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge being electrically neutral;
a first electrical connection for receiving an electrical current of a first polarity;
a second electrical connection for receiving an electrical current of a second polarity, the second polarity being opposite the first polarity;
at least one first electrode positioned on the opposed surface of the first scissor blade and coupled to the first electrical connection;
at least one second electrode positioned on the opposed surface of the first scissor blade and coupled to the second electrical connection;
at least one first electrode positioned on the opposed surface of the second scissor blade and coupled to the second electrical connection; and
at least one second electrode positioned on the opposed surface of the second scissor blade and coupled to the first electrical connection,in a first energized state, the first electrical connection delivers electrical current only to the at least one first electrode on the first scissor blade and the second electrical connection delivers electrical current only to the at least one first electrode on the second scissor blade, andin a second energized state, the first electrical connection delivers electrical current to the at least one first electrode on the first scissor blade and to the at least one second electrode on the second scissor blade and the second electrical connection delivers electrical current to the at least one second electrode on the first scissor blade and to the at least one first electrode on the second scissor blade.
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Accused Products
Abstract
Bipolar electrosurgical scissors for treating biological tissue include first and second scissor blades. A shearing surface and cutting edge of each blade is electrically neutral. The scissors include a pair of electrical connections for receiving electrical currents of opposing polarities. Each blade includes at least one first electrode and at least one second electrode positioned on a surface opposite the shearing surface. The at least one first electrode on the first blade and the at least one second electrode on the second blade are coupled to the first electrical connection. The at least one second electrode on the first blade and the at least one first electrode on the second blade are coupled to the second electrical connection. In a first energized state, the electrical connections deliver electrical current only to the first electrodes. In a second energized state, the electrical connections deliver electrical current to all of the electrodes.
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Citations
21 Claims
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1. A bipolar electrosurgical scissors for use in treating biological tissue, comprising:
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a first scissor blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge being electrically neutral; a second scissor blade pivotally coupled to the first blade, the second blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge being electrically neutral; a first electrical connection for receiving an electrical current of a first polarity; a second electrical connection for receiving an electrical current of a second polarity, the second polarity being opposite the first polarity; at least one first electrode positioned on the opposed surface of the first scissor blade and coupled to the first electrical connection; at least one second electrode positioned on the opposed surface of the first scissor blade and coupled to the second electrical connection; at least one first electrode positioned on the opposed surface of the second scissor blade and coupled to the second electrical connection; and at least one second electrode positioned on the opposed surface of the second scissor blade and coupled to the first electrical connection, in a first energized state, the first electrical connection delivers electrical current only to the at least one first electrode on the first scissor blade and the second electrical connection delivers electrical current only to the at least one first electrode on the second scissor blade, and in a second energized state, the first electrical connection delivers electrical current to the at least one first electrode on the first scissor blade and to the at least one second electrode on the second scissor blade and the second electrical connection delivers electrical current to the at least one second electrode on the first scissor blade and to the at least one first electrode on the second scissor blade. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A bipolar electrosurgical scissors for use in treating biological tissue, comprising:
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a first scissor blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge of the first scissor blade being electrically neutral; and a second scissor blade pivotally coupled to the first scissor blade, the second scissor blade including a shearing surface, an opposed surface opposite the shearing surface, and a cutting edge, the shearing surface and cutting edge of the second scissor blade being electrically neutral, the shearing surface of the second scissor blade facing the shearing surface of the first scissor blade and interfacing with the shearing surface of the first scissor blade; each of the first and second scissor blades including a laminated structure comprising; a first layer coinciding with the shearing surface and cutting edge of the scissor blade, the first layer including a first surface and a second, opposed surface opposite the first surface, the first surface of the first layer forming the shearing surface of the blade; a second layer coupled to the second surface of the first layer, the second layer being electrically nonconductive, a third layer coupled to the second layer on the side opposite the first layer with the second layer completely separating the third layer from the first layer, the third layer being electrically conductive and forming at least one first electrode at exposed portions thereof, a fourth layer coupled to the third layer on the side opposite the second layer, the fourth layer being electrically nonconductive, and a fifth layer coupled to the fourth layer on the side opposite the third layer with the fourth layer completely separating the fifth layer from the third layer, the fifth layer being electrically conductive and forming at least one second electrode at exposed portions thereof. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A bipolar electrosurgical scissors for use in treating biological tissue, comprising:
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a first scissor blade having a shearing surface, and an opposed surface opposite the shearing surface, the first scissor blade comprising; at least one first electrode positioned on the opposed surface; and at least one second electrode positioned on the opposed surface; a second scissor blade pivotally coupled to the first scissor blade by a pivot pin, the second scissor blade having a shearing surface and an opposed surface opposite the shearing surface, the second scissor blade comprising; at least one first electrode positioned on the opposed surface; and at least one second electrode positioned on the opposed surface; and wherein in a first energized state, electrical current of a first polarity is delivered only to the at least one first electrode on the first scissor blade and electrical current of a second polarity opposite the first polarity is delivered only to the at least one first electrode on the second scissor blade, and in a second energized state, electrical current of the first polarity is delivered to the at least one first electrode on the first scissor blade and to the at least one second electrode on the second scissor blade and electrical current of the second polarity is delivered to the at least one second electrode on the first scissor blade and to the at least one first electrode on the second scissor blade. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification