Tubular support prosthesis with laterally overlapping arcs of curvature
AssigneeAxetis AG C/O Zulauf Asset Management AG
InventorThilo Fliedner
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Abstract
The present invention refers to a tubular support prostheses (stent) for vessels or intercorporeal lumina comprising at least two adjacently arranged expandable support rings connected to one another on at least one joint, said support rings being formed by a filament wound in a meander-like manner to form several arcs of curvature. The expansion behavior of such a support prosthesis is to be improved. For this purpose at least one arc of curvature of a first support ring and an arc of curvature of an adjacent second support ring overlap laterally, whereby the joint in the overlapping portion is formed.
Claims16
Tubular support prosthesis for vessels or intercorporeal lumina, comprising at least two expandable support rings adjacently arranged along a support prosthesis main axis and connected to one another at least at one joint, said support rings being formed by a filament wound in a meander-like shape to form several arcs of curvature characterized in that each arc of curvature comprises a first lateral side portion, a second lateral side portion and an apex section extending between these side portions, wherein the lateral side portion of at least one arc of curvature of a first support ring and the lateral side portion of one arc of curvature of an adjacent second support ring laterally overlap and the joint is formed in the overlapping portion;
- wherein the overlapping arcs of curvature in the overlapping portion comprise common filament sections which form the joint, with an adjoining support ring and on the other side with a further adjoining support ring, and wherein the meander-like shape of the filament of a support ring comprises at least two different arc of curvature shapes or sizes, which commonly form a recurrent pattern of the meander-like shape.
A tubular support prosthesis for vessels or intercorporeal lumina, comprising:
- at least two expandable support rings adjacently arranged long a support prosthesis main axis and connected to one another at least at one joint wherein a support ring is circumferentially alternately connected on the one side with an adjoining support ring (2.2) and on the other side with a further adjoining support ring, said support rings being formed by a filament wound in a meander-like shape to form several arcs of curvature comprising a first lateral side portion, a second lateral side portion and an apex section extending between these side portions;
- a first overlapping portion formed by the lateral side portion of at least one arc of curvature on one side of a first support ring and a lateral side portion of one arc of curvature on one side of an adjacent second support ring laterally overlapping each other;
- a second overlapping portion formed by the lateral side portion of at least one arc of curvature on the other side of said first support ring and the lateral side portion of one arc of curvature of an adjacent third support ring laterally overlapping each other, each of said overlapping portions comprising a common filament section which forms said at least one joint;
- and said common filament sections being inclined at an angle relative to a parallel to the support prosthesis main axis, wherein said common filament section of said first overlapping portion is inclined in the opposite direction with respect to said common filament section of said second overlapping portion;
- and wherein the meander shape of the filament of a support ring comprises at least two different arc of curvature shapes or sizes, which commonly form a recurrent pattern of the meander shape.
Dependencies are inferred from the claim text.