US 12,440,649 B2
Systems and methods for treating chronic total occlusion of an artery
Angelo Nascimbene, Austin, TX (US)
Assigned to THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM, Austin, TX (US)
Appl. No. 17/298,997
Filed by THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM, Austin, TX (US)
PCT Filed Dec. 3, 2019, PCT No. PCT/US2019/064324
§ 371(c)(1), (2) Date Jun. 2, 2021,
PCT Pub. No. WO2020/117865, PCT Pub. Date Jun. 11, 2020.
Claims priority of provisional application 62/774,377, filed on Dec. 3, 2018.
Prior Publication US 2022/0047851 A1, Feb. 17, 2022
Int. Cl. A61M 25/01 (2006.01); A61F 2/86 (2013.01); A61M 25/00 (2006.01); A61M 25/09 (2006.01)
CPC A61M 25/0158 (2013.01) [A61F 2/86 (2013.01); A61M 25/09 (2013.01); A61M 2025/0042 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for treating total occlusion of an artery of a patient, the method comprising:
positioning a small-diameter tube on a first side of an arterial plaque causing the total occlusion, the small-diameter tube having an elongated body, a distal tip, and an inner lumen that extends the length of the tube, the distal tip including a magnetic element that generates a strong focal magnetic field;
positioning a crossing wire on a second side of the arterial plaque, the crossing wire having an elongated body and a distal tip, the distal tip of the crossing wire including a ferromagnetic element;
advancing the crossing wire through or around the arterial plaque toward the small-diameter tube so as to position the distal tip of the crossing wire proximate to the distal tip of the small-diameter tube, wherein the distal tip of the crossing wire is drawn to the distal tip of the small-diameter tube due to magnetic attraction;
continuing to advance the crossing wire toward the small-diameter tube until the crossing wire is drawn into the inner lumen of the small-diameter tube under the effects of the magnetic attraction; and
advancing the crossing wire through the inner lumen of the small-diameter tube until the distal tip of the crossing wire is positioned outside of the patient's body.