Vascular prosthesis
AssigneeJOTEC GmbH
InventorsMarleen Klausmann, Jan Ulmer, Oezlem Oeztuerk, Rainer Lesmeister
Life of this patent
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Abstract
The present invention relates to a vascular prosthesis for a blood vessel of a patient, comprising: a hollow cylindrical main body having a prosthetic material, a longitudinal axis (L), and a stent frame, wherein the main body includes proximal and distal openings at proximal and distal ends, and wherein the vascular prosthesis having a first terminal stent ring attached to the prosthetic material at at least one end, and wherein the vascular prosthesis has at least one thread element attached thereto, wherein the at least one thread element reduces the diameter of the respective distal or proximal opening by tensile loading.
Claims9
A vascular prosthesis configured for a blood vessel of a patient, comprising:
- a hollow cylindrical main body having a stent frame and a prosthetic material attached thereto, the main body having a longitudinal axis (L), an inner side and an outer side, and a proximal end with a proximal opening and a distal end with a distal opening,
- a first self-expanding terminal stent ring provided at the proximal end and/or the distal end, the first terminal stent ring configured to be transferred from a compressed state to an expanded state, wherein the first terminal stent ring is meanderingly circumferential and has pointed arches and struts connecting the pointed arches, which pointed arches have outermost tips, and wherein the first terminal stent ring is attached to the prosthesis material on the outer side of the main body in such a way that no pointed arch of the first terminal stent ring projects freely beyond the proximal and/or the distal end, and wherein the prosthetic material is flush with the outermost tip of the pointed arches of the first terminal stent ring,
- at least one thread element provided on the first terminal stent ring, the at least one thread element having a fixated first end and a free second end, without the fixated first end and the free second end being knotted together, wherein the free second end of the thread element terminates in a closed loop via which the thread element is configured for detachably fixing to a vascular prosthesis insertion system, and wherein the at least one thread element is sewn with its fixated first end to a second terminal stent ring of the vascular prosthesis, wherein the second terminal stent ring is fixed to the prosthesis material on the inner side of the main body, and wherein the thread element is guided circumferentially and movably on the vascular prosthesis in such a way that the first terminal stent ring can be transferred from a radially compressed state into an expanded state via a tensile load or tensile relief of the at least one thread element, wherein the at least one thread element is threaded circumferentially between the first stent ring and the prosthetic material in such a way that the thread element is guided alternately over and under struts of the first terminal stent ring and away from a fixation point of the fixated first end of the thread element, and wherein the at least one thread element, via its free second end, is guided at least at one point in the circumferential direction of the first terminal stent ring between two spaced-apart seams, the two spaced-apart seams securing the first terminal stent ring to the prosthesis material, thereby being deflectable from the circumferential direction into another direction, and
- the second terminal stent ring being located at the proximal and/or distal end, the second terminal stent ring configured to be transferred from a radially compressed state to an expanded state via compression and/or expansion of the first terminal stent ring, wherein the second terminal stent ring is meanderingly circumferential and has pointed arches and struts connecting the pointed arches, which pointed arches have outermost tips, and wherein the second terminal stent ring is fixed to the prosthesis material on the inner side of the main body in such a way that no pointed arch of the second terminal stent ring projects freely beyond the proximal and/or distal end, and wherein the prosthetic material is flush with the outermost tip of the pointed arches of the second terminal stent ring.
Dependencies are inferred from the claim text.