Patent ID: 7637885

Claim:
A catheter device for applying a medical cutting balloon intervention to a patient, comprising: a cutting balloon catheter having an inflatable balloon arranged at a catheter tip of the balloon catheter, the balloon catheter comprising a blade arranged along a longitudinal axis of the balloon catheter; a catheter jacket formed as a tube for accommodating the balloon catheter, the catheter jacket comprising a tapered and rigid section that supports the inflatable balloon; an OCT catheter for monitoring the medical cutting balloon intervention; a rotating OCT signal line for transmitting OCT signals wherein the balloon catheter and OCT catheter form one integrated unit; and an inflation line for inflating the balloon, wherein the rotating OCT signaling line is connected to an OCT sensor arranged upstream the balloon relative to the catheter tip, the balloon is configured as a ring-shaped balloon, the inflation line and the OCT signaling line are arranged within the catheter jacket, and the OCT signaling line is guided through a central opening of the ring shaped balloon; wherein the OCT signaling line is arranged within a hollow and flexible drive shaft for driving the OCT sensor and wherein the hollow and flexible drive shaft is arranged within the tapered and rigid section of the catheter jacket, the tapered and rigid section forming a sliding support for the hollow and flexible drive shaft, and wherein the OCT sensor is arranged behind a circular ring-shaped window of the hollow flexible drive shaft.