TORSION REDUCTION SYSTEM

摘要

An apparatus, including an insertion tube having a proximal tube end and a distal tube end that includes an electrode, a first irrigation line including proximal and distal irrigation line ends and configured to supply fluid from the distal irrigation line end through apertures in the tube, and an electrical line including a proximal electrical line end and a distal electric line end coupled to the electrode. The apparatus includes a slip ring unit having a stator, a rotor connected to the proximal electrical line end, and a hollow channel extending through respective centers of the stator and the rotor along a longitudinal axis of the slip ring unit. The apparatus includes a rotary joint in fluid communication with the proximal irrigation line end, an angle sensor configured to detect torsion of the proximal irrigation line end, and a drive mechanism coupled to rotate the rotor responsively to the torsion.

主权项

1. An apparatus, comprising:
a flexible insertion tube comprising a proximal tube end and a distal tube end for insertion into a body cavity; an electrode mounted at the distal tube end; a first irrigation line, comprising proximal and distal irrigation line ends, contained within the insertion tube, and configured to supply irrigation fluid from the distal irrigation line end through one or more apertures in the distal tube end; a first electrical line contained within the insertion tube and comprising a proximal electrical line end and a distal electric line end, which is coupled to the electrode; a slip ring unit comprising:
a stator connected to a second electrical line for connection to a console;a rotor connected to the proximal electrical line end; anda hollow channel extending through respective centers of the stator and the rotor along a longitudinal axis of the slip ring unit; a rotary joint in fluid communication with the proximal irrigation line end, and in fluid communication with the console via a second irrigation line; an angle sensor configured to detect torsion of the proximal irrigation line end and the proximal electrical line end; and a drive mechanism coupled to rotate the rotor responsively to the detected torsion so as to reduce the torsion of the proximal irrigation line end and the proximal electrical line end.