초록 ▼

An atherectomy device that may reduce the risk of damage to a vessel wall. One rotatable atherectomy burr has a recessed material removal portion lying between less abrasive proximal and distal shoulders. The shoulders can have a straight, rounded or elliptical taper. The shoulders can perform a cam

An atherectomy device that may reduce the risk of damage to a vessel wall. One rotatable atherectomy burr has a recessed material removal portion lying between less abrasive proximal and distal shoulders. The shoulders can have a straight, rounded or elliptical taper. The shoulders can perform a cam action when the burr is canted is a vessel, as when passing the burr and guide wire through a tortuous, stenosed vessel path. The shoulders act to align the burr with the path through the vessel, presenting the less abrasive shoulders to the vessel wall while presenting the abrasive portion to a stenosis.

대표청구항 ▼

[ What is claimed is:] [1.] An ablation burr for removing deposits from a patient's vessel or stent, comprising:a burr body having a distal end and a proximal end and a concave leading outer surface, the concave leading outer surface having a radius that increases from a smooth distal tip at the dis

[ What is claimed is:] [1.] An ablation burr for removing deposits from a patient's vessel or stent, comprising:a burr body having a distal end and a proximal end and a concave leading outer surface, the concave leading outer surface having a radius that increases from a smooth distal tip at the distal end of the burr to a point that is proximal to the smooth distal tip, wherein the concave leading outer surface includes an abrasive that removes deposits from the patient's vessel or stent.