Patent ID: 8489190

Claim:
A catheter device comprising: a distal end and a proximal end; a motor located at the proximal end to provide rotary motion; a drive shaft, extending from the proximal end to the distal end for driving a rotating element located at the distal end of the catheter device, wherein at the proximal end, the drive shaft is connected to the motor by a clutch, wherein the clutch is a magnetic clutch with a proximal magnet unit and a distal magnet unit, wherein the proximal magnet unit is connected to the motor, and the distal magnet unit is connected to the drive shaft, and wherein the distal magnet unit is supported in a clutch housing and physically separated from the proximal magnet unit by a terminal disc, wherein the terminal disc does not contact either the distal magnet unit or the proximal magnet unit thereby reducing contact friction, wherein the distal magnet unit and proximal magnet unit are arranged to one another so that complementary poles lie opposite to one another, and wherein the rotary motion transmitted by the motor to the proximal magnet unit of the clutch is transferred to the distal magnet unit by magnetic interaction thereby transmitting torque and providing high rotational speed.