Stent-graft prosthesis
The invention relates to a stent-graft prosthesis with a toroidally expandable sleeve ( 34 ) which has at least two opening attachments ( 36 and 37 ) and is made of flexible material for internal lining of an arterial aneurysm ( 1 ) and, where appropriate, with an aortic insert ( 23 ) associated with the sleeve ( 34 ), in the form of a vascular prosthesis with expandable supporting structures ( 39, 40 ) for fixing the aortic insert ( 23 ) in the sleeve ( 34 ) in the region of the opening attachments ( 36 and 37 ) thereof. The sleeve is designed as foldable toroid. The shape of the sleeve in the unfolded state is adapted to the shape of an aneurysm.
1 - 19 . (canceled)
20 . A stent-graft prosthesis with a toroidally expandable sleeve which has at least two opening attachments and is made of flexible material for internal lining of an arterial aneurysm and, where appropriate, with an aortic insert associated with the sleeve, in the form of a vascular prosthesis with expandable supporting structures for fixing the aortic insert in the sleeve in the region of the opening attachments thereof, wherein the sleeve is designed as foldable toroid, and the shape of the sleeve in the unfolded state is adapted to the shape of an aneurysm.
21 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve has a volume extensibility which corresponds at least to the volume of the aneurysm, with the dimensions of the sleeve being greater than the size of the aneurysm.
22 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve has a size which is up to 5 times the size of the aneurysm.
23 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve is formed at least in the central region of the toroid of a substantially non-elastically extensible material.
24 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve at least at the transition to the opening attachments is formed from elastic material.
25 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve is provided on its outsides with an adhesive for bonding to the inner wall of the aneurysm.
26 . The stent-graft prosthesis as claimed in claim 20 , wherein the inside of the sleeve and/or the outside of the aortic insert include agents which promote blood coagulation.
27 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve is fluid-tight at least at the time of implantation.
28 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve consists of nonabsorbable material.
29 . The stent-graft prosthesis as claimed in claim 20 , wherein the prosthesis is formed by the sleeve alone.
30 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve and the aortic insert associated therewith are present separately.
31 . The stent-graft prosthesis as claimed in claim 20 , wherein the aortic insert can be sealingly connected at its free ends to the opening attachments of the sleeve.
32 . The stent-graft prosthesis as claimed in claim 20 , wherein the aortic insert has a bifurcation, and the sleeve has three opening attachments in a corresponding manner.
33 . The stent-graft prosthesis as claimed in claim 20 , wherein the aortic insert is sealingly connected at its free ends to the opening attachments of the sleeve to form an enlargeable chamber between sleeve and aortic insert.
34 . The stent-graft prosthesis as claimed in claim 20 , wherein a covering of the aortic insert is pervious for blood to pass through.
35 . The stent-graft prosthesis as claimed in claim 20 , wherein the chamber comprises agents which favor blood coagulation.
36 . The stent-graft prosthesis as claimed in claim 20 , wherein devices are provided on the outside of the opening attachments of the sleeve.
37 . The stent-graft prosthesis as claimed in claim 20 , wherein devices are provided on the inside of the opening attachments of the sleeve.
38 . The stent-graft prosthesis as claimed in claim 20 , wherein the aortic insert can be connected, in particular is connected, via touch and close fasteners to the inside of the opening attachments of the sleeve.
39 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve has a size which is 1.1 to 2 times the size of the aneurysm.
40 . The stent-graft prosthesis as claims in claim 20 , wherein the whole sleeve is formed from elastic material.
41 . The stent-graft prosthesis as claimed in claim 20 , wherein the sleeve is permanently fluid-tight.
42 . The stent-graft prosthesis as claimed in claim 20 , wherein devices for sealing fixing of the prosthesis to the inner walls of the aorta are provided on the outside of the opening attachments of the sleeve.
43 . The stent-graft prosthesis as claimed in claim 20 , wherein devices for sealing fixing of the aortic insert to the inner wall of the sleeve are provided on the inside of the opening attachments of the sleeve.