Patent ID: 9339333
Filing Date: 2016-05-17
CPC Classification: A61B

Claim Text:
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 flexible 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 flexible 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 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 the rotor and configured to rotate the rotor responsively based upon the torsion detected by the angle sensor so as to reduce the torsion of the proximal irrigation line end and the proximal electrical line end.