Variable stiffness electrophysiology catheter

Surgery – Diagnostic testing – Structure of body-contacting electrode or electrode inserted...

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607122, 604280, A61B 504

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active

058336044

ABSTRACT:
A catheter supporting a tip electrode for percutaneous insertion into a living body having a steering mechanism that includes an elongated body bendable in response to external forces to steer the tip electrode. An axially movable stiffening member, preferably in the form of a sleeve or rod provides a variable resistance to bending of the body in response to an applied bending force. A control stylet or sleeve extends through the catheter and is attached to the stiffening member for moving the stiffening member in a distal/proximal direction relative to the body.

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