Guidewire for crossing occlusions in blood vessels
Patent 5385152 Issued on January 31, 1995. Estimated Expiration Date: May 14, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A steerable guidewire for gently penetrating an occlusion within a vessel, with an elongated solid main guidewire body having selected stiffness characteristics along its length to allow the guidewire to be urged through a narrow, tortuous body lumen by application of forces at a proximal end, and an enlarged distal end portion having a diameter larger than portions of the guidewire proximal thereof including a soft polymeric element and a permanently deflected portion to enable steering of the guidewire.
Meier et al., "Magnum Wire for Balloon Recanalization of Chronic Total Coronary Occlusions," Am. J. Cardiol., 64: 148-154 (Jul. 15, 1989)
Tonnesen et al., "Femoral Artery Recanalization with Percutaneous Angioplasty and Segmentally Enclosed Plasminogen Activator"; May, 1990