Electrosurgical instrument
First Claim
1. A simple and reliable electrosurgical instrument for selectively providing electrical energy from an electrosurgical generator to a patient for cutting, coagulation, and the like comprising:
- an electrode blade;
a cable adapted to be connected to the electrosurgical generator, said cable including a main contact wire, and first and second insulated switch wires each having a short uninsulated portion;
a hollow elongate body including a main member and a cover, said main member including (a) lateral sides, (b) a first holding means for holding said switch wires adjacent said uninsulated portions on one lateral side of said main member and spaced from one another, and (c) a second holding means for holding said switch wires adjacent said uninsulated portions on the other lateral side whereby said uninsulated portions span between said first and second holding means and are spaced longitudinally from one another;
a blade receiver within the elongate body which resiliently receives said electrode blade and which is electrically connected to said contact wire to provide electrical connection between said contact wire and said electrode blade, said electrode blade extending from the elongate body; and
a switch means for selectively connecting one of said uninsulated portions of said switch wires to said contact wire such that a selected electrical energy is transmitted along said contact wire to said electrode blade from the generator.
2 Assignments
0 Petitions
Accused Products
Abstract
A simple and reliable electrosurgical instrument includes a cable having a main contact wire and first second insulated switch wires all provided with a short insulated or bare portion. The cable is received in a main member having a first holding mechanism for holding the switch wires adjacent uninsulated portions thereof on one lateral side and spaced from one another as well as a second holding mechanism for holding the switch wires adjacent the uninsulated portions thereof on the other lateral side so that the uninsulated portions span between the first and second holding mechanisms and are spaced longitudinally from one another. A blade receiver receives an electrode blade and is then electrically connected to the contact wire. A switch device selectively connects one of the uninsulated portions of the switch wires to the contact wire during operation. The first and second holding mechanisms preferably include channels and a cover includes projections which hold the wires in place. The switch device also preferably includes a contact strip which is attached to the distal end to the blade receiver and at a proximal end to the contact wire. This contact strip extends longitudinally and above but immediately adjacent the uninsulated portions of the switch wires. Two respective switches mounted in the cover are then selectively depressed to push the contact strip into engagement with an associated bared switch wire therebeneath. This contact strip includes a U-shaped portion which is resiliently held in contact with the uninsulated portion of the contact wire.
119 Citations
31 Claims
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1. A simple and reliable electrosurgical instrument for selectively providing electrical energy from an electrosurgical generator to a patient for cutting, coagulation, and the like comprising:
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an electrode blade; a cable adapted to be connected to the electrosurgical generator, said cable including a main contact wire, and first and second insulated switch wires each having a short uninsulated portion; a hollow elongate body including a main member and a cover, said main member including (a) lateral sides, (b) a first holding means for holding said switch wires adjacent said uninsulated portions on one lateral side of said main member and spaced from one another, and (c) a second holding means for holding said switch wires adjacent said uninsulated portions on the other lateral side whereby said uninsulated portions span between said first and second holding means and are spaced longitudinally from one another; a blade receiver within the elongate body which resiliently receives said electrode blade and which is electrically connected to said contact wire to provide electrical connection between said contact wire and said electrode blade, said electrode blade extending from the elongate body; and a switch means for selectively connecting one of said uninsulated portions of said switch wires to said contact wire such that a selected electrical energy is transmitted along said contact wire to said electrode blade from the generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A simple and reliable electrosurgical instrument for selectively providing electrical energy from an electrosurgical generator to a patient for cutting, coagulation, and the like comprising:
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an electrode blade; a cable adapted to be connected to the electrosurgical generator, said cable including a main contact wire, and first and second insulated switch wires each having a short uninsulated portion; a hollow elongate body including a main member and a cover, said main member including a holding means for holding said uninsulated portions of said switch wires in a laterally extending position across said main member and spaced from one another; a blade receiver within the elongate body which resiliently receives said electrode blade and which is electrically connected to said contact wire to provide electrical connection between said contact wire and said electrode blade, said electrode blade extending from the elongate body; and a switch means for selectively connecting one of said uninsulated portions of said switch wires to said contact wire such that a selected electrical energy is transmitted along said contact wire to said electrode blade from the generator, said switch means including (a) a contact strip which is attached at a distal end to said blade receiver and at a proximal end to said contact wire, said contact strip extending longitudinally and above but immediately adjacent said uninsulated portions of said switch wires, said proximal end of said contact strip including a U-shaped portion, and wherein said main member includes a slot in which said U-shaped portion is resiliently received; and
(b) two switches mounted in said cover above respective said uninsulated portions of said switch wires and said contact strip which are selectively depressed to push said contact strip into engagement with an associated said switch wire. - View Dependent Claims (22, 23, 24)
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25. A simple and reliable electrosurgical instrument for selectively providing electrical energy from an electrosurgical generator to a patient for cutting, coagulation, and the like comprising:
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an electrode blade; a cable adapted to be connected to the electrosurgical generator, said cable including a main contact wire, and first and second insulated switch wires; a hollow elongate body including a hollow interior and a nose having an elongate bore extending longitudinally of said body, said bore being open at a distal end thereof and closed otherwise by said nose whereby said bore is fluidly isolated from said hollow interior; a blade receiver located in said bore which resiliently receives said electrode blade inserted into said distal end of said bore, said blade extending from said elongate body, said blade receiver including a contact tail which extends through said nose and which is electrically connected to said contact wire to provide electrical connection between said contact wire and said electrode blade, said blade receiver further including a cylindrical contact member which is integrally formed with said contact tail; and
wherein said contact member and said contact tail are integrally molded in said nose;
a switch means for selectively connecting one of said switch wires to said contact wire such that a selected electrical energy is transmitted along said contact wire to said electrode blade from the generator. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification