Stent unclogging system with stepped spiral
OwnerSamuel Shiberinventor
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Abstract
An atherectomy system for removing obstructive material from within a patient's vessel comprising a flexible spiral wire having a distal stepped-down section that is connected through a short transition section with a nominal diameter section, a flexible catheter that is slideable and rotateable over the spiral wire and rotating means coupled to the catheter.
Claims1
A method for unclogging a stent that is located in a patient's vessel, with a catheter system that has a flexible spiral wire having a distal stepped-down section, and a flexible catheter that is slideable and rotateable over the spiral wire, said catheter having a tubular blade at its distal end and rotating means coupled to the catheter, said method comprising the following steps;
- threading a guidewire through the vessel and advancing it to the vicinity of the stent,
- threading said distal stepped-down section into an obstructive material that is clogging the stent,
- passing a tubular blade over the flexible spiral wire and the obstructive material thereby separating the obstructive material from the stent, and
- withdrawing the spiral wire and the tubular blade with the obstructive material out of the stent.
Dependencies are inferred from the claim text.