Expandable endovascular stent
First Claim
1. An expandable endovascular stent comprising a flexible, tubular body (1) with a longitudinal axis, a wall of which is formed by interconnected, closed frame cells (2) arranged with at least two cells adjacent to each other in a circumferential direction, the frame cells (2) having at least two elongated, mutually converging cell sides, the body including filament-shaped frame material that transmits compressive forces in an axial direction of a filament extending continuously from one frame cell directly into an other frame cell following in a longitudinal direction, which stent is expandable from a radially compressed state into an expanded state having a larger diameter, wherein in the expanded state of the stent, the filament-shaped frame material in several of the frame cells (2) forms at least one of a heart-like shape and an arrowhead-like shape with at least two interconnected shorter cell sides (5) positioned opposite to and interconnected with the two mutually converging longer cell sides (3), and wherein the shorter cell sides (5) do not deform radially outward from the longer cell sides (3) upon radial expansion of the stent to its expanded state.
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Accused Products
Abstract
An expandable endovascular stent comprises a flexible, tubular body (1) with a longitudinal axis, the wall of which is formed by interconnected, closed frame cells (2) arranged with at least two cells adjacent to each other in the circumferential direction. Filament-shaped frame material capable of transmitting compressive forces in the axial direction of the filament extends continuously from one frame cell directly into the frame cell following in the longitudinal direction. The stent can be expanded from a radially compressed state into a state having a larger diameter. In the expanded state of the stent, the pressure transmitting frame material in several of the frame cells (2) forms a heart-like or arrowhead-like shape with two interconnected shorter cell sides (5) positioned opposite to and interconnected with two mutually converging longer cell sides (3).
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Citations
20 Claims
- 1. An expandable endovascular stent comprising a flexible, tubular body (1) with a longitudinal axis, a wall of which is formed by interconnected, closed frame cells (2) arranged with at least two cells adjacent to each other in a circumferential direction, the frame cells (2) having at least two elongated, mutually converging cell sides, the body including filament-shaped frame material that transmits compressive forces in an axial direction of a filament extending continuously from one frame cell directly into an other frame cell following in a longitudinal direction, which stent is expandable from a radially compressed state into an expanded state having a larger diameter, wherein in the expanded state of the stent, the filament-shaped frame material in several of the frame cells (2) forms at least one of a heart-like shape and an arrowhead-like shape with at least two interconnected shorter cell sides (5) positioned opposite to and interconnected with the two mutually converging longer cell sides (3), and wherein the shorter cell sides (5) do not deform radially outward from the longer cell sides (3) upon radial expansion of the stent to its expanded state.
- 17. An expandable endovascular stent comprising a flexible, tubular body (1) with a longitudinal axis, a wall of which is formed by interconnected, closed frame cells (2) arranged with at least two cells adjacent to each other in a circumferential direction, the frame cells (2) having at least two elongated, mutually converging cell sides, the body including filament-shaped frame material that transmits compressive force in an axial direction of a filament extending continuously from one frame cell directly into an other frame cell following in a longitudinal direction, which stent is expandable from a radially compressed state into an expanded state having a larger diameter, wherein in the expanded state of the stent, the filament-shaped frame material in several of the frame cells (2) forms at least one of a heart-like shape and an arrowhead-like shape with at least two interconnected shorter cell sides (5) positioned opposite to and interconnected with the two mutually converging longer cell sides (3), and wherein the body (1) is formed by several filaments (10, 11) constituting the shorter and longer cell sides (3, 5) and being wound about each other at adjacent ends of pairs of shorter and longer cell sides.
Specification