Other

William Cook, Europe A/s

Palle M Hansen

Zaza Alexandrovich Kavteladze

Aleksandr P Korshok

Beth Ann Kirts

Andrej A Kadnikov

Dale Berry

Coy M Herald

Timothy G Vendrely

A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) having a tubular wire frame ( ) with rows of elongate cells ( ) each having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame ( ) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape ( ) which provides the frame ( ) with large radial stiffness. In the axial direction the frame ( ) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells ( ) may be flexible.

Implantable, self-expanding prosthetic device

A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) have a tubular wire frame ( ) with rows of elongate cells ( ) each having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame ( ) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape ( ) which provides the frame ( ) with large radial stiffness. In the axial direction the frame ( ) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells ( ) may be flexible.

Implantable self expanding prosthetic device

A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) has a tubular wire frame ( ) with rows of elongate cells ( ) having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame ( ) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape ( ) which provides the frame ( ) with large radial stiffness. In the axial direction the frame ( ) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells ( ) may be flexible.

An expandable endovascular stent comprises a flexible, tubular body (1) with a longitudinal axis, the wall of which is formed by interconnected, closed lattice cells (2) arranged with at least two cells adjacent to each other in the circumferential direction. Filament-shaped lattice material capable of transmitting compressive forces in the axial direction of the filament extends continuously from one lattice cell directly into the lattice cell following in the longitudinal direction. The stent can be expanded from a radially compressed state into a radially expanded state having a larger diameter. In the expanded state of the stent, the pressure transmitting lattice material in several of the lattice cells (2) forms a heart-like or arrowhead-like shape with at least two interconnected diverging, angle .beta. cell sides (5) positioned opposite to and interconnected with at least two mutually converging, angle .alpha. longer cell sides (3). For stability during expansion and compression of a self-expanding stent, the sum of the first angle .alpha. and the second angle .beta. should be in the range of 345.degree. to 360.degree., preferably at 360.degree. to maintain a constant axial stent length.

Expandable stent

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).

Growing community of inventors

Roskilde, Denmark

Palle M Hansen