Patent ID: 7174240

Claim:
A controller for a rotational atherectomy system comprising: a fluid pump control device adapted to control a pumping of a fluid through a rotational atherectomy device; wherein the fluid pump control device comprises: a fluid flow controller adapted to provide a pump control signal to a fluid pump; a first control device adapted to provide a pump activation signal to the fluid flow controller; and a second control device adapted to provide a turbine activation signal to the fluid flow controller and the turbine control device; wherein upon activation of the first control device the fluid pump is activated to pump the fluid at a dynamic fluid flow rate and upon activation of the second control device within a predetermined time interval the fluid pump continues pumping the fluid at the dynamic fluid flow rate while the drive shaft rotation is initiated and maintained; a turbine control device adapted to control a rotation of a drive shaft of the rotational atherectomy device; and an alarm device adapted to provide an alarm indication if a fluid supply level to the system is below a predetermined level, wherein the alarm device is adapted to prevent the rotation of the drive shaft if the alarm device is activated prior to activation of the second control device.