Methods of and apparatus for treating vascular defects

摘要

A method of and apparatus for treating vascular defects. A catheter having a selectively energizeable coil on its distal end. The catheter is particularly adapted for the delivery of magnetic embolic materials. The coil can be energized to aid in the magnetic navigation of the catheter, to help retain magnetic material in the catheter, to draw ejected magnetic material back into the catheter. A catheter can also be used to deliver a magnetic patch that can be magnetically applied to a vascular defect such as an aneurysm.