Guidewire capture
First Claim
1. A method, comprising:
- introducing a guide catheter into a blood vessel at a first entry site location;
advancing the guide catheter in an antegrade direction toward an upstream, proximal end of an occlusion;
introducing a capture catheter having a rapid exchange configuration into a proximal end portion of the guide catheter, the capture catheter including a longitudinal member having its distal end eccentrically coupled with a proximal end of an expandable member;
advancing the capture catheter to a distal end portion of the guide catheter;
deploying and expanding at least a portion of the expandable member of the capture catheter on the upstream, proximal end of the occlusion, including applying an advancing force, in a longitudinal direction and relative to the guide catheter, to a proximal end of the longitudinal member such that the expandable member is thereby advanced, in the longitudinal direction and relative to the guide catheter, to a position beyond the distal end portion of the guide catheter; and
advancing a guidewire, introduced into the blood vessel at a second entry site location different than the first entry site location, in a retrograde direction, including advancing the guidewire toward and through a downstream, distal end of the occlusion and subsequently into and through the deployed expandable member on the upstream, proximal end of the occlusion.
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Accused Products
Abstract
Assemblies and methods for capturing a guidewire advanced through a blood vessel in a retrograde direction are disclosed. An assembly can include a constraining catheter and a capture catheter. The constraining catheter can include a first longitudinal member and a tubular member; the tubular member can be eccentrically coupled with a distal end portion of the first longitudinal member. The capture catheter can include a second longitudinal member and a funnel member; the funnel member can be eccentrically coupled with a distal end portion of the second longitudinal member. The funnel member can be moved between a collapsed configuration and an expanded configuration through relative movement between the first and second longitudinal members. In the collapsed configuration, at least a portion of the funnel member is disposed within a lumen of the tubular member. In the expanded configuration, the portion of the funnel member projects from an end of the tubular member.
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Citations
15 Claims
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1. A method, comprising:
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introducing a guide catheter into a blood vessel at a first entry site location; advancing the guide catheter in an antegrade direction toward an upstream, proximal end of an occlusion; introducing a capture catheter having a rapid exchange configuration into a proximal end portion of the guide catheter, the capture catheter including a longitudinal member having its distal end eccentrically coupled with a proximal end of an expandable member; advancing the capture catheter to a distal end portion of the guide catheter; deploying and expanding at least a portion of the expandable member of the capture catheter on the upstream, proximal end of the occlusion, including applying an advancing force, in a longitudinal direction and relative to the guide catheter, to a proximal end of the longitudinal member such that the expandable member is thereby advanced, in the longitudinal direction and relative to the guide catheter, to a position beyond the distal end portion of the guide catheter; and advancing a guidewire, introduced into the blood vessel at a second entry site location different than the first entry site location, in a retrograde direction, including advancing the guidewire toward and through a downstream, distal end of the occlusion and subsequently into and through the deployed expandable member on the upstream, proximal end of the occlusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification