Electrode assembly with separate bipolar cannula and supply electrode
First Claim
1. An electrode assembly comprising:
- a cannula having;
a first coupling assembly with a hub; and
an elongated tubular body having a proximal end mounted to said hub of said first coupling assembly and projecting outward to a distal end, first and second spaced apart active contacts disposed adjacent to said distal end, and a first conductive terminal seated in said hub and electrically connected to said second active contact; and
a supply electrode assembly having;
a supply electrode having a proximal end spaced apart from a distal end, said supply electrode defining a longitudinal axis;
a second coupling assembly attached to said proximal end of said supply electrode; and
a second conductive terminal attached to said second coupling assembly;
said supply electrode is dimensioned to be slidably inserted in said elongated tubular body so as to be positioned to electrically contact said first active contact;
said first and second coupling assemblies are configured to releasably interlock such that relative rotational movement between said first and second coupling assemblies is constrained to prevent clockwise and counterclockwise rotation of said supply electrode in said elongated tubular body with respect to said longitudinal axis; and
said first and second conductive terminals are collectively positioned so that when said first and second coupling assemblies releasably interlock, said first and second conductive terminals contact each other.
1 Assignment
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Accused Products
Abstract
An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when in an operating state. The first and second coupling assemblies are configured to releasably interlock to prevent clockwise and counterclockwise rotation of the supply electrode in the body.
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Citations
19 Claims
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1. An electrode assembly comprising:
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a cannula having; a first coupling assembly with a hub; and an elongated tubular body having a proximal end mounted to said hub of said first coupling assembly and projecting outward to a distal end, first and second spaced apart active contacts disposed adjacent to said distal end, and a first conductive terminal seated in said hub and electrically connected to said second active contact; and a supply electrode assembly having; a supply electrode having a proximal end spaced apart from a distal end, said supply electrode defining a longitudinal axis; a second coupling assembly attached to said proximal end of said supply electrode; and a second conductive terminal attached to said second coupling assembly; said supply electrode is dimensioned to be slidably inserted in said elongated tubular body so as to be positioned to electrically contact said first active contact; said first and second coupling assemblies are configured to releasably interlock such that relative rotational movement between said first and second coupling assemblies is constrained to prevent clockwise and counterclockwise rotation of said supply electrode in said elongated tubular body with respect to said longitudinal axis; and said first and second conductive terminals are collectively positioned so that when said first and second coupling assemblies releasably interlock, said first and second conductive terminals contact each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrode assembly comprising:
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a cannula having; a first coupling assembly having a first circumferential indexing feature; and an elongated tubular body having a proximal end mounted to said first coupling assembly and projecting outward to a distal end, first and second spaced apart active contacts disposed adjacent to said distal end, and a first conductive terminal seated in said first coupling assembly and electrically connected to said second active contact; and a supply electrode assembly having; a supply electrode having a proximal end spaced apart from a distal end, said supply electrode defining a longitudinal axis; a second coupling assembly attached to said proximal end of said supply electrode and having a second circumferential indexing feature; and a second conductive terminal attached to said second coupling assembly; said supply electrode is dimensioned to be slidably inserted in said elongated tubular body so as to be positioned to electrically contact said first active contact; and said first and second coupling assemblies are configured to releasably interlock thereby constraining relative rotational movement between said first and second coupling assemblies to prevent clockwise and counterclockwise rotation of said supply electrode in said elongated tubular body with respect to said longitudinal axis when said first and second circumferential indexing features mate. - View Dependent Claims (15, 16, 17, 18)
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19. An electrode assembly comprising:
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a cannula having; a first coupling assembly with a hub; and an elongated tubular body having a proximal end mounted to said hub of said first coupling assembly and projecting outward to a distal end, first and second spaced apart active contacts disposed adjacent to said distal end, and a first conductive terminal seated in said hub and electrically connected to said second active contact; and a supply electrode assembly having; a supply electrode having a proximal end spaced apart from a distal end, said supply electrode defining a longitudinal axis; a temperature sensor disposed near said distal end of said supply electrode; a second coupling assembly attached to said proximal end of said supply electrode; and a second conductive terminal spaced from said supply electrode and attached to said second coupling assembly; said elongated tubular body defines a through-bore dimensioned to receive said supply electrode so that said supply electrode is positioned to electrically contact said first active contact and said temperature sensor is positioned to measure tissue temperature; and said first and second coupling assemblies are configured to releasably interlock such that relative rotational movement between said first and second coupling assemblies is constrained to prevent clockwise and counterclockwise rotation of said supply electrode in said elongated tubular body with respect to said longitudinal axis.
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Specification