INTRALUMINAL PROSTHESIS Russian patent published in 2010 - IPC A61F2/90 A61F2/82 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to intraluminal prostheses to be used in human openings and tubular canals to restore patency blood vessels which have been narrowed or blocked as a result of pathological processes, such as stenoses. The intraluminal prosthesis includes a tubular body applicable to be transformed between the compressed state and the extended or partially extended state. The specified tubular body is formed along a longitudinal axis and includes a set of crimped elements, or closed "twisting" passages formed essentially circumferentially. Each of said crimped elements includes shoulder pieces or shoulders and curved pieces or curves to join two adjacent shoulders and thereby form said crimped element or "twisting" passage. The curves turned to the following crimped element, are displaced circumferentially relative to the coupled opposite curves of the adjoining crimped element and when the prosthesis is compressed, and when the prosthesis is extended or partially extended. At least one bridge having the basic longitudinal length joins two adjoining crimped elements in two coupled curves which are at a shortest longitudinal distance between these two crimped elements. The crimped elements are grouped at least in two sections along the longitudinal axis. The first section includes at least two adjoining crimped element joined with at least one bridge, and at least one pair of the curves found at the shortest longitudinal distance between two adjoining crimped elements is not bridged. The second section includes at least two adjoining crimped elements joined with a set of the bridges in number equal to pairs of the curves of two crimped elements found at the shortest longitudinal distance between two crimped elements.

EFFECT: invention provides considerable radial durability in its centre section or as a while in the section adjoining stenosis; it is made of a minimum material, mainly in the end sections or as a whole in those sections outside of stenosis that eliminates restenosis and decreases mechanical rigidity.

20 cl, 8 dwg