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US 2014/0277088 A1Published application
Vascular filtration device
AssigneeW. L. Gore & Associates, Inc.
InventorNathan L. Friedman
Life of this patent
Estimating the term…
Abstract
This document provides vascular filtering devices and methods for their use. In some embodiments, the vascular filtering devices include an elongate member having a wall with one or more apertures and a lumen. The vascular filtering devices can also include a porous membrane bag portion with multiple elongate extensions that extend through the apertures of the elongate member and through the lumen of the elongate member, exiting the lumen at the proximal region of the elongate member.
Claims50
A vascular filtering device, comprising:
- an elongate member having one or more apertures in a wall of the elongate member and a lumen that extends from a proximal region of the elongate member and is in fluid communication with the one or more apertures;
- and
- a membranous member comprising a bag portion and a plurality of elongate extensions of the bag portion, the bag portion comprising a membrane and wherein a distal region of the bag portion is attached to a distal portion of the elongate member, and wherein each of the elongate extensions is integral with the bag portion and extends through an aperture of the one or more apertures and through the lumen of the elongate member, and exits the lumen at the proximal region of the elongate member.
A vascular filtering device, comprising:
- an elongate member having one or more apertures in a wall of the elongate member and a lumen that extends from a proximal region of the elongate member and is in fluid communication with the one or more apertures;
- and
- a membranous member comprising a bag portion and a plurality of tethers that extend from the bag portion, the bag portion comprising a porous membrane and wherein a distal region of the bag portion is attached to a distal portion of the elongate member, and wherein each of the tethers extends through an aperture of the one or more apertures and through the lumen, and exits the lumen at the proximal region of the elongate member.
A vascular filtering device, comprising:
- a first elongate member having one or more apertures in a wall of the first elongate member and a lumen that extends from a proximal region of the first elongate member and is in fluid communication with the one or more apertures;
- a membranous member comprising a bag portion and a plurality of elongate extensions of the bag portion, the bag portion comprising a porous membrane and wherein a distal region of the bag portion is attached to a distal portion of the first elongate member, and wherein each of the elongate extensions is integral with the bag portion and extends through an aperture of the one or more apertures;
- and
- a second elongate member that includes a distal end that is attached to each elongate extension of the plurality of elongate extensions of the bag portion, the distal end of the second elongate member being disposed within the lumen of the first elongate member and a proximal end of the second elongate member extending proximal of the proximal region of the first elongate member.
1 more element
An implantable filter, comprising:
- a filter element having a closed distal end and an open proximal end;
- a plurality of flexible tethers associated with the proximal end;
- and
- means to maintain the distal end in a set orientation,
- wherein the tethers are adapted to extend relative to the set orientation of the distal end so as to allow the filter element to open in response to flow of fluid through the filter element.
2 more elements
A method of providing vascular filtration, comprising:
- providing a vascular filtration device that comprises:
- an elongate member having one or more apertures in a wall of the elongate member and a lumen that extends from a proximal region of the elongate member and is in fluid communication with the one or more apertures;
- and
- a membranous member comprising a bag portion and a plurality of elongate extensions of the bag portion, the bag portion comprising a porous membrane and wherein a distal region of the bag portion is attached to a distal portion of the elongate member, and wherein each of the elongate extensions is integral with the bag portion and extends through an aperture of the one or more apertures and through the lumen, and exits the lumen at the proximal region of the elongate member;
- applying a proximally directed force to the plurality of elongate extensions of the bag portion, wherein the application of the force causes the bag portion to collapse against the elongate member;
- advancing, while maintaining application of the force, the distal portion of the elongate member to a deployment site within a blood vessel;
- and
- ceasing application of the force, and wherein blood flow through the blood vessel causes the bag portion to expand radially away from the elongate member.
5 more elements
A vascular filtering device, comprising:
- an elongate member having one or more apertures in a wall of a first distal region of the elongate member and a lumen that extends from a proximal region of the elongate member and is in fluid communication with the one or more apertures;
- and
- a membranous member comprising a bag portion and a plurality of elongate extensions of the bag portion, the bag portion comprising a porous membrane, an attachment region and a mouth region, wherein the attachment region of the bag is attached to a second distal portion of the elongate member and the mouth region is located distal to said attachment region, and wherein each of the elongate extensions is integral with the bag portion and extends through an aperture of the one or more apertures and through the lumen of the elongate member, and exits the lumen at the proximal region of the elongate member.
Dependencies are inferred from the claim text.