Apparatus and method for treating occluded vasculature
First Claim
1. A method of traversing a vascular occlusion using an apparatus comprising an elongate sheath and a stylet captively disposed within the elongate sheath such that relative movement between the sheath and the stylet is limited in both a proximal and a distal direction, the apparatus having a distal region and a proximal region, the stylet having a distal region comprising a cutting surface, the method comprising steps of:
- positioning the apparatus such that its distal region is proximate an occlusion;
advancing the stylet distally such that its distal region extends distally beyond the distal region of the elongate sheath and contacts a surface of the occlusion;
moving the stylet such that its cutting surface contacts and penetrates the occlusion; and
extending a guidewire through the stylet and through the occlusion.
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Accused Products
Abstract
Occluded vasculature such as occluded arterial vasculature can be recanalized using a device that is configured to penetrate an occlusion, while limiting a distance that said penetration structure can extend in order to limit inadvertent vascular damage. The device can include an elongate sheath and a stylet disposed within the elongate sheath. The elongate sheath and the stylet can include, in combination, an engagement section that is configured to limit relative axial movement between the elongate sheath and the stylet.
256 Citations
9 Claims
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1. A method of traversing a vascular occlusion using an apparatus comprising an elongate sheath and a stylet captively disposed within the elongate sheath such that relative movement between the sheath and the stylet is limited in both a proximal and a distal direction, the apparatus having a distal region and a proximal region, the stylet having a distal region comprising a cutting surface, the method comprising steps of:
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positioning the apparatus such that its distal region is proximate an occlusion; advancing the stylet distally such that its distal region extends distally beyond the distal region of the elongate sheath and contacts a surface of the occlusion; moving the stylet such that its cutting surface contacts and penetrates the occlusion; and
extending a guidewire through the stylet and through the occlusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification