Needle and tine deployment mechanism
AssigneeGynesonics, Inc.
InventorsBrian Placek, Robert K. Deckman
Life of this patent
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Abstract
A needle electrode deployment shaft includes a central member and a plurality of needle electrodes. The central member has a plurality of needle advancement channels formed therein. The needle electrodes are disposed within the advancement channels and each advancement channel terminates in a ramp portion which deflects the needles radially outwardly as they are axially advanced. The ramps may be spirally or acutely configured in order to increase the distance through which the needles may be bent as they are axially advanced. Additionally, the central member may have a radially reduced distal tip in order to decrease tissue insertion forces.
Claims35
A needle electrode deployment shaft comprising:
- a central member having a proximal end, a distal end, a longitudinal axis therebetween, an outer surface, and a plurality of needle electrode advancement channels;
- and a plurality of peripheral needle electrodes slidably received in the channels;
- wherein the plurality of needle electrode advancement channels comprises a plurality of ramps, each ramp being arcuate and curved about the longitudinal axis of the central member.
Dependencies are inferred from the claim text.