Reducing mechanical stress on conductors and connection points in a position determinable interventional medical device

摘要

A medical device configured for diagnosis or treatment of tissues within a body is provided. The device includes an elongate, deformable member configured to be received within a lumen in the body and having proximal and distal ends. A position sensor is disposed at the distal end. In one embodiment, a conductor is wound about the member. The conductor is connected to the position sensor and has a first winding pitch over a first portion of the deformable member and a second winding pitch, different from the first winding pitch, over a second portion of the deformable member. In another embodiment, the member defines a neutral longitudinal axis extending between the proximal and distal ends. A conductor extending between the proximal and distal ends is connected to the position sensor at a connection node on the neutral axis.

主权项

1. A medical device configured for diagnosis or treatment of a tissue within a body, the medical device comprising the following:
an elongate, deformable member configured to be received within a lumen in said body, having a proximal end and a distal end, said deformable member defining a neutral longitudinal axis extending between said proximal and distal ends; a position sensor disposed at said distal end of said deformable member; and a conductor extending between said proximal and distal ends of said elongate, deformable member and having at least a first portion extending along said neutral axis, said conductor connected to said position sensor at a connection node on said neutral axis.