Path Creation Through Occlusion
First Claim
1. An assembly for creating a bi-directional path through an occlusion, comprising:
- an alignment device including a positioning member and a tubular member defining a passageway,a distal end portion of the positioning member coupled with the tubular member,a proximal end portion and a distal end portion of the tubular member including a configuration having a progressive size-changing shape, each size-changing shape having an opening with a diameter greater than a diameter of an intermediate portion of the tubular member.
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Accused Products
Abstract
This patent document discloses assemblies, alignment devices and methods for creating a bi-directional path through an occlusion. An alignment device can include a positioning member and a tubular member. The tubular member can be coupled with a distal end portion of the positioning member and can include proximal and distal progressive size-changing shapes separated by a narrow neck passageway. An assembly can include the alignment device, a guide catheter having a lumen in which the alignment device is at least partially positioned, a guidewire, and a specialty catheter for supporting the guidewire. The alignment device and the guide catheter can be advanced in an antegrade direction to a proximal end of the occlusion, and the guidewire and the specialty catheter can be advanced in a retrograde direction to a distal end of the occlusion. The guidewire and the specialty catheter can be manipulated through the occlusion and into the distal end of the tubular member.
14 Citations
23 Claims
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1. An assembly for creating a bi-directional path through an occlusion, comprising:
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an alignment device including a positioning member and a tubular member defining a passageway, a distal end portion of the positioning member coupled with the tubular member, a proximal end portion and a distal end portion of the tubular member including a configuration having a progressive size-changing shape, each size-changing shape having an opening with a diameter greater than a diameter of an intermediate portion of the tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An alignment device for use with a guide catheter, comprising:
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a tubular member defining a passageway; and a positioning member eccentrically coupled at least to a proximal end portion of the tubular member and extending proximally therefrom for slidably positioning the tubular member within the guide catheter, a distal end portion of the tubular member including a funnel having an opening for alignment with a distal opening of the guide catheter and configured to receive a tip of a specialty catheter when positioned within or at least partially beyond the distal opening of the guide catheter. - View Dependent Claims (14, 15)
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16. A method, comprising:
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advancing a first guide catheter, introduced into a blood vessel at a location upstream of an occlusion, in an antegrade direction toward a proximal end of the occlusion; advancing an alignment device, including a positioning member and a tubular member having bi-directional proximal and distal funnels separated by a narrow neck passageway, through the first guide catheter such that the distal funnel is near or partially beyond a distal end portion of the first guide catheter, including allowing the proximal funnel to engage against an inner surface of the first guide catheter and allowing the distal funnel to engage against the inner surface of the first guide catheter or an adjacent luminal wall of the blood vessel; and advancing a first guidewire and a specialty catheter, introduced into the blood vessel at a location downstream of the occlusion, in a retrograde direction, including manipulating the first guidewire and the specialty catheter toward and through the occlusion and into the distal funnel of the tubular member. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification