Guidewire for crossing occlusions or stenoses
First Claim
Patent Images
1. A method for crossing an occlusion in a blood vessel, the method comprising:
- advancing an elongate member through a blood vessel to a location proximate an occlusion, the elongate member having a proximal end removably coupled to a housing and a drive shaft rotatably disposed within the elongate member extending from a motor positioned in the housing to a distal tip rotatably disposed at a distal end of the elongate member;
rotating the drive shaft within the elongate member with the motor to form or enlarge a pathway through the occlusion with the distal tip;
decoupling the housing from the elongate member while retaining the elongate member in the blood vessel proximate the occlusion; and
advancing an access device over the elongate member to the occlusion after decoupling the housing from the elongate member.
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Accused Products
Abstract
Systems and methods for crossing stenosis, partial occlusions, or complete occlusions within a body lumen. The systems generally include an elongate member such as a hollow guidewire that houses a rotatable and translatable drive shaft. The drive shaft typically has a distal portion that is advanced to create a path in the occlusive material that is large enough to allow the hollow guidewire to cross the occlusive material.
178 Citations
17 Claims
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1. A method for crossing an occlusion in a blood vessel, the method comprising:
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advancing an elongate member through a blood vessel to a location proximate an occlusion, the elongate member having a proximal end removably coupled to a housing and a drive shaft rotatably disposed within the elongate member extending from a motor positioned in the housing to a distal tip rotatably disposed at a distal end of the elongate member; rotating the drive shaft within the elongate member with the motor to form or enlarge a pathway through the occlusion with the distal tip; decoupling the housing from the elongate member while retaining the elongate member in the blood vessel proximate the occlusion; and advancing an access device over the elongate member to the occlusion after decoupling the housing from the elongate member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for crossing an occlusion in a blood vessel, the method comprising:
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advancing a hollow guidewire through a blood vessel to a location proximate an occlusion, the guidewire having a proximal end removably coupled to a housing and a drive shaft extending through the hollow guidewire, a proximal end of the drive shaft being coupled to a motor shaft of a motor positioned in the housing and a distal end of the drive shaft being coupled to a distal tip rotatably disposed at a distal end of the guidewire; rotating the drive shaft within the guidewire with the motor to form or enlarge a pathway through the occlusion with the distal tip; decoupling the guidewire and the drive shaft from the housing and the motor shaft, respectively, while retaining the guidewire in the blood vessel proximate the occlusion; and advancing an intravascular catheter over the guidewire to the occlusion after decoupling the guidewire and the drive shaft from the housing and the motor shaft. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification