Occluding anatomical structures
AssigneeEclipse Medical Limited
InventorSwaminathan JAYARAMAN
Life of this patent
Estimating the term…
Abstract
An elongate resilient tube of a mesh of shape memory alloy is used to therapeutically occlude an opening in body tissue. The tube is compressible so that it can be delivered to the opening in the body within a catheter. The tube self-expands as it is released from the catheter to contiguously form, sequentially an outer perimeter structure and an inner perimeter structure disposed within the outer perimeter structure to conformingly engage an inner side of the outer perimeter structure, a plate shaped structure, and a flexible connector between them. J-shaped hooks extend from the perimeter structure to flexibly engage tissue of the body opening without piercing the tissue.
Claims20
A device for occluding an appendage inside a living body forming an elongate passage and having an open entrance and a hollow interior, comprising:
- at least one elongate resilient tube formed of a mesh of shape memory alloy, the tube compressible to be delivered to the appendage within a catheter, the at least one tube self-expanding as the tube is released from the catheter to contiguously form, sequentially:
- an outer perimeter structure
- that is elongate on a side portion of the outer perimeter structure to be sized and dimensioned to flexibly conform to a longitudinal anatomy of an interior surface of the appendage extending along a longitudinal axis of the appendage when the device is deployed within the appendage;
- an inner perimeter structure
- sized and dimensioned along an elongate contact area to flexibly and conformingly contact an interior of the outer perimeter structure to thereby mutually conform to the interior surface of the appendage together with the outer perimeter structure when the device is deployed within the appendage,
- the inner perimeter structure forming a snap fit with the outer perimeter structure when the device is deployed within the appendage due to a shape memory effect of folding of the device, wherein the inner perimeter structure frictionally engages the outer perimeter structure along the elongate contact area to thereby resist displacement of the outer perimeter structure along the longitudinal axis of the appendage, the inner perimeter structure and the outer perimeter structure together forming a single double-walled perimeter structure defining a hollow interior;
- a plurality of hooks each
- affixed to the outer bell-shaped structure
- to extend away from the outer perimeter structure,
- forming a barb having J-shape, and
- forming a sharp free end profile at an end of the barb.
A device for occluding an appendage inside a living body forming an elongate passage and having an open entrance and a hollow interior, comprising:
- at least one elongate resilient tube formed of a mesh of shape memory alloy, the tube compressible to be delivered to the appendage within a catheter, the at least one tube self-expanding as the tube is released from the catheter to contiguously form, sequentially:
- an outer bell-shaped structure
- that is elongate on a side portion of the bell-shape to be sized and dimensioned to flexibly conform to a longitudinal anatomy of an interior surface of the appendage extending along a longitudinal axis of the appendage when the device is deployed within the appendage;
- an inner bell-shaped structure
- sized and dimensioned along an elongate contact area to flexibly and conformingly contact an interior of the outer bell-shaped structure to thereby mutually conform to the interior surface of the appendage together with the outer bell-shaped structure when the device is deployed within the appendage,
- the inner bell-shaped structure forming a snap fit with the outer bell-shaped structure when the device is deployed within the appendage due to a shape memory effect of folding of the device, wherein the inner bell-shaped structure frictionally engages the outer bell-shaped structure along the elongate contact area to thereby resist displacement of the outer bell-shaped structure along the longitudinal axis of the appendage, the inner bell-shaped structure and the outer bell-shaped structure together forming a single double-walled bell-shaped structure defining a hollow bell interior;
- a tubular connector having a diameter substantially smaller than the double-walled bell-shaped structure and the opening of the appendage, the tubular connector extending away from an apex of the double-walled bell-shaped structure and through the hollow bell interior;
- and
- a plurality of hooks each
- affixed to the outer bell-shaped structure
- to extend away from the outer bell-shaped structure,
- forming a barb having J-shape, and
- forming a sharp free end profile at an end of the barb.
Dependencies are inferred from the claim text.