Direct access atherectomy devices and methods of use
First Claim
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1. A method for aortic atherectomy by direct access, comprising the steps of:
- inserting an elongate tubular member into the aorta upstream of the inominate artery;
wherein the elongate tubular member further comprises a lumen for arterial blood perfusion;
infusing oxygenated blood through the lumen for arterial blood perfusion;
inserting an atherectomy catheter through the elongate tubular member into the aorta; and
removing an aortic atheroma by operating the atherectomy catheter;
wherein the atherectomy catheter comprises a sheath having a lumen that communicates with an opening at a distal end of the sheath; and
wherein the sheath terminates distally in a sharpened edge.
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Abstract
An atherectomy device containing cannula systems having lumens adapted for insertion of a blood filter and an atherectomy catheter useful for performing atherectomy directly on a patient'"'"'s cardiovascular tissue. Other embodiments include a lumen for arterial perfusion useful in providing oxygenated blood to the aorta during cardiopulmonary bypass. The distal end of the atherectomy catheter includes an assembly with a pincer, a loop with or without a mesh, laser, hydraulics, or other suitable mechanism adapted for removing atheroma from a cardiac or vascular tissue. Methods of using the systems for vascular atherectomy are also disclosed herein.
130 Citations
9 Claims
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1. A method for aortic atherectomy by direct access, comprising the steps of:
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inserting an elongate tubular member into the aorta upstream of the inominate artery;
wherein the elongate tubular member further comprises a lumen for arterial blood perfusion;infusing oxygenated blood through the lumen for arterial blood perfusion; inserting an atherectomy catheter through the elongate tubular member into the aorta; and removing an aortic atheroma by operating the atherectomy catheter;
wherein the atherectomy catheter comprises a sheath having a lumen that communicates with an opening at a distal end of the sheath; and
wherein the sheath terminates distally in a sharpened edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification