Stent

• US 20060217799A1
• Filed: 02/28/2006
• Published: 09/28/2006
• Est. Priority Date: 03/23/2005
• Status: Active Grant

• Current Assignee: ADMEDES Schuessler GmbH
• Original Assignee: ADMEDES Schuessler GmbH
• Inventors: Steiner, Ralph, Mailander, Werner, Scherrible, Frank, Flaxmeier, Erik
• Granted Patent: US 8,834,559 B2
• Time in Patent Office: Days
• US Class Current: 623/1.440
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak

Abstract

The present invention relates to an aneurysm stent for implantation into a living body, in particular for treatment of aneurysms, in order to implant the stent in the compressed state in a vessel and expand the stent after positioning it in the vessel, having a grid or mesh structure and at least one membrane (2) or a plurality of membranes (2) for covering at least one or more stent cells (1; 3) in the grid or mesh structure, thereby matching the permeation characteristics of the stent structure to the particular characteristics of the aneurysm.

Claims

1. Aneurysm stent for implantation into a living body, in particular for treatment of aneurysms, in order to implant the stent in the compressed state in a vessel and expand the stent after positioning it in the vessel, having a grid or mesh structure and at least one membrane or a plurality of membranes for covering at least one or more stent cells in the grid or mesh structure.

2. Aneurysm stent according to claim 1, wherein the membrane is provided in the cross section of the covered stent cell within the web thickness of the stent cell, so that the membrane does not project from the stent structure.

3. Aneurysm stent according to claim 2, wherein the membrane is less thick than the web thickness of the stent cell.

4. Aneurysm stent according to claim 2, wherein the membrane has essentially the same thickness as the web thickness of the stent cell.

19. Aneurysm stent according to claim 1, wherein the membrane includes a polymer, preferably a thermoplastic elastomer or silicone.

20. Aneurysm stent according to claim 1, wherein the membrane is attached to the webs of the stent cell by adhesion.

21. Aneurysm stent according to claim 1, wherein the membrane includes an X-ray-visible material.

22. Aneurysm stent according to claim 1, wherein the membrane is filled with a medication.

23. Aneurysm stent according to claim 1, wherein the membrane has a porous or open structure.

24. Aneurysm stent according to one of claim 1, wherein the membrane has a closed structure.

25. Aneurysm stent according to claim 1, wherein a plurality of stent cells in a uniform row or in a uniform pattern is covered by a membrane.

26. Aneurysm stent according to claim 1, wherein in each case an open, i.e., non-closed, stent cell follows a stent cell covered by the membrane.

27. Aneurysm stent according to claim 1, wherein the stent has a closed stent cell geometry (CSG).

28. Aneurysm stent according to one of claim 1, wherein the stent has an open stent cell geometry (OSG), at least in places, having two, three, or multiple interconnected stent cells.

5-18. -18. (canceled)

29. A method for producing an aneurysm stent, comprising:

preparing a stent structure from a material having shape memory characteristics with webs, the stent structuring having stent cells formed between the webs;

attaching a membrane to the webs of at least one stent cell.