Electrode sheath for electrosurgical device
First Claim
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1. An electrosurgical device, comprisinga shaft member having a proximal end and a distal end;
- a first substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member, the first electrode including a first side surface and a first electrode tip;
a second substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member;
the second electrode including a second side surface and a second electrode tip;
the first electrode and the second electrode being disposed in a side-by-side relationship;
an electrode sheath movably coupled to the distal end of the shaft member, the electrode sheath defining a first tubular passage sized to receive the first electrode and a second tubular passage sized to receive the second electrode, the sheath being movable between an extended position, which covers the first and second side surfaces and leaves exposed the first and second electrode tips, and a retracted position that uncovers the first and second side surfaces; and
when the electrode sheath is in the extended position, the first and second electrode tips project beyond the distal end of the electrode sheath.
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Abstract
This invention provides an electrosurgical device comprising a handle, a shaft member distal to the handle, a first electrode tip and a second electrode tip at a distal end of the shaft member with the first electrode tip laterally spaced from the second electrode tip, and an electrode sheath movable to cover and uncover a side of the electrode tips while a distal end of the electrode tips is uncovered to treat tissue.
563 Citations
14 Claims
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1. An electrosurgical device, comprising
a shaft member having a proximal end and a distal end; -
a first substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member, the first electrode including a first side surface and a first electrode tip; a second substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member;
the second electrode including a second side surface and a second electrode tip;
the first electrode and the second electrode being disposed in a side-by-side relationship;an electrode sheath movably coupled to the distal end of the shaft member, the electrode sheath defining a first tubular passage sized to receive the first electrode and a second tubular passage sized to receive the second electrode, the sheath being movable between an extended position, which covers the first and second side surfaces and leaves exposed the first and second electrode tips, and a retracted position that uncovers the first and second side surfaces; and when the electrode sheath is in the extended position, the first and second electrode tips project beyond the distal end of the electrode sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrosurgical device, comprising:
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a handle; a shaft member having a proximal end and a distal end, the proximal end of the shaft being coupled to the distal end of the handle; a first substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member, the first electrode including a first side surface and a first electrode tip; a second substantially cylindrical electrode extending longitudinally away from the distal end of the shaft member;
the second electrode including a second side surface and a second electrode tip;
the first electrode and the second electrode being disposed in a side-by-side and substantially parallel relationship;
the first and second electrode tips define a substantially co-planar surface; andan electrode sheath having a proximal end and distal end, the proximal end of the sheath being disposed at the distal end of the shaft member;
the electrode sheath being movably coupled to the distal end of the shaft member, the electrode sheath defining a first tubular passage sized to receive the first electrode and a second tubular passage sized to receive the second electrode, the sheath being movable between an extended position, which covers the first and second side surfaces and leaves exposed the first and second electrode tips, and a retracted position that uncovers the first and second side surfaces;
when the electrode sheath is in the extended position, the first and second electrode tips project beyond the distal end of the electrode sheath.
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Specification