Patent ID: 11864780
Assignee: REX MEDICAL, L.P.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An atherectomy device for removing deposits such as plaque from an interior of a vessel comprising:
a housing;
an outer member extending from the housing and having a distal end and a first lumen for fluid infusion to cool the device;
an inner member having a distal end and positioned within the outer member, the inner member having a second lumen having an aspiration opening for aspiration of particles proximally within the second lumen, the first lumen in the outer member communicating with the second lumen for fluid infusion from the first lumen into the second lumen;
a rotatable shaft positioned for rotational movement within the second lumen of the inner member; and
a rotatable tip positioned at the distal region of the rotatable shaft and spaced distally from the distal end of the inner member, the rotatable tip rotatable by a motor to remove the deposits from the vessel for aspiration through the second lumen of the inner member;
wherein, upon fluid infusion, fluid is blocked at a region spaced from the aspiration opening in the inner member and fluid is directed rearwardly during rotation of the rotatable shaft to provide a closed fluid system so fluid does not exit the first or second lumen into the body.