Anchor device for use with catheters
First Claim
Patent Images
1. A delivery system, comprising:
- an expandable anchor stent attached to a guidewire, the expandable anchor stent formed from a plurality of wire elements, each wire element in the plurality of wire elements having a zig-zag pattern shape, wherein at least one end of a first wire element in the plurality of wire elements is attached to at least one end of a second wire element adjacent to the first wire element, and wherein at least one of the plurality of wire elements and a distal end of the expandable anchor stent includes radiopaque material;
a first catheter having a first diameter, the catheter configured to receive the expandable anchor stent and advance the expandable anchor stent within a vessel to a target treatment site, wherein the expandable anchor stent is configured to expand as the guidewire advances the expandable anchor stent out of a distal end of the first catheter, and wherein the expandable anchor stent in an expanded state provides sufficient radial force to anchor the guidewire against an interior wall of the vessel; and
a second catheter having a second diameter greater than the first diameter of the first catheter, the second catheter configured to fit around the first catheter in a telescoping configuration, the second catheter being movable toward the target treatment site around the first catheter while the expandable anchor stent anchors the guidewire against the interior wall of the vessel.
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Accused Products
Abstract
An anchor device to simplify catheterization procedures, particularly for insertion and maneuvering of large catheters in tortuous arteries, vessels, or other lumen is disclosed. In some embodiments, the anchor device includes an anchor stent formed from a plurality of zig-zag shaped wire elements that are coupled together. The device further includes a plurality of connector struts attached at a proximal end of the anchor stent, the connector struts coalescing to form a strut tip. A guide device, such as a guidewire, is attached to the anchor stent at the strut tip and may be used to guide the anchor stent into the arteries or other vessels and toward a target treatment site.
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Citations
9 Claims
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1. A delivery system, comprising:
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an expandable anchor stent attached to a guidewire, the expandable anchor stent formed from a plurality of wire elements, each wire element in the plurality of wire elements having a zig-zag pattern shape, wherein at least one end of a first wire element in the plurality of wire elements is attached to at least one end of a second wire element adjacent to the first wire element, and wherein at least one of the plurality of wire elements and a distal end of the expandable anchor stent includes radiopaque material; a first catheter having a first diameter, the catheter configured to receive the expandable anchor stent and advance the expandable anchor stent within a vessel to a target treatment site, wherein the expandable anchor stent is configured to expand as the guidewire advances the expandable anchor stent out of a distal end of the first catheter, and wherein the expandable anchor stent in an expanded state provides sufficient radial force to anchor the guidewire against an interior wall of the vessel; and a second catheter having a second diameter greater than the first diameter of the first catheter, the second catheter configured to fit around the first catheter in a telescoping configuration, the second catheter being movable toward the target treatment site around the first catheter while the expandable anchor stent anchors the guidewire against the interior wall of the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification