Fluid control system for a rotational atherectomy device
A method for controlling fluid flow in a rotational atherectomy device. A source of fluid is provided through a pump to the rotational atherectomy device, wherein the pump maintains the fluid flow at a minimal rate during a time period when a drive shaft of the device is not rotating. A first control is activated to increase a rate of the fluid flow and second control is activated to initiate a rotation of the drive shaft during another time period when the fluid flow is at the increased rate.
1 - 87 . (canceled)
88 . A fluid control system for a rotational atherectomy device comprising:
a fluid pump connected to the atherectomy device;
a fluid supply connected to the fluid pump;
a first control switch adapted to initiate and maintain a dynamic flow of fluid to the atherectomy device; and
a second control switch adapted to maintain dynamic flow of fluid through the atherectomy device and initiate and maintain a rotation of a drive shaft in the atherectomy device.
89 . The fluid control system of claim 88 , further comprising a control device adapted to receive inputs from the first control switch and the second control switch and regulate a pumping of the fluid by the fluid pump.
90 . The fluid control system of claim 88 , wherein the control device is adapted to maintain the dynamic flow of fluid for a predetermined time period after a deactivation of the first control switch.
91 . The fluid control system of claim 88 , wherein the control device is further adapted to maintain the dynamic flow of fluid and initiate the rotation of the drive shaft if the second control device is activated within a predetermined time period after a deactivation of the first control device.
92 . The fluid control system of claim 88 , wherein the control device is adapted to prevent the rotation of the drive shaft if the second control device is activated after an end of a predetermined time period following a deactivation of the first control device.
93 . The fluid control system of claim 88 , wherein the first control switch comprises a foot activated switch device.
94 . The fluid control system of claim 88 , wherein the second control switch comprises a foot activated switch device.