Transmitting torque to an operative element through a working channel

摘要

Methods, systems, and devices for providing treatment to a target site are described. The system may include a guide assembly, an expandable support device coupled with the distal end of the guide assembly, and an operative member disposed on the expandable support device. The expandable support device may be configured to transition between a collapsed and expanded configuration. The expandable support device may be supported by one or more flexible supports aligned in parallel with an axis about which the expandable support device collapses and/or multiple splines arranged in a pattern configured to promote transitioning of the expandable support device between an expanded and collapsed configuration. The guide assembly may be configured to provide torque to the expandable support device. The operative member can include multiple electrodes arranged in parallel to the axis about which the expandable support device collapses.

主权项

1. A system for delivering treatment to a target treatment area comprising:
a guide assembly for delivering and positioning an operative member through a working channel to the target treatment area, the guide assembly comprising:
one or more transmission lines for operatively connecting the operative member to a power source;a first shaft enclosing at least a first portion of the one or more transmission lines, the first shaft configured for transmitting torque to the operative member; anda second shaft enclosing at least a second portion of the transmission lines, wherein the first shaft and the second shaft are configured to allow the first shaft to rotate independently of the second shaft; an expandable support device configured to deliver the operative member through the working channel to the target treatment area and coupled with a distal end of the guide assembly; and the operative member coupled with the expandable support device.