Delivery device for an endoluminal prosthesis

• US 20070250069A1
• Filed: 04/17/2007
• Published: 10/25/2007
• Est. Priority Date: 04/19/2006
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Carlson, James, Young, Ronan
• Granted Patent: US 9,308,105 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires

Abstract

A system for endoluminally delivering and deploying a prosthesis includes a prosthesis comprising a self-expanding stent and a cover for retaining at least a portion of the self-expanding stent. The stent is biased into contact with an inner surface of the cover. The inner surface has a hardness that is equal to or greater than the hardness of the stent. Additional aspects of the invention are disclosed and include a method of manufacturing an endoluminal prosthesis delivery and deployment system.

Claims

1. A system for endoluminally delivering and deploying a prosthesis, the system comprising:

a prosthesis having an end portion and a body portion, the end portion including a self-expanding stent having a hardness; and

a cover for maintaining at least a portion of the stent in a compressed state until deployment, the cover having a generally tubular cavity with an inner surface, wherein the stent is biased into contact with the inner surface of the cover, the inner surface having a hardness that is equal to or greater than the hardness of the stent.

2. The system according to claim 1, wherein the inner surface comprises metal.

3. The system according to claim 2, wherein the metal is anodized aluminum.

4. The system according to claim 2, wherein the inner surface further comprises PTFE.

5. The system according to claim 1, wherein the inner surface comprises a ceramic material.

6. The system according to claim 5, wherein the inner surface further comprises PTFE.

7. The system according to claim 1, wherein the cover comprises a plastic body with a metallic inner surface.

8. The system according to claim 1, wherein the cover comprises a plastic body with a ceramic inner surface.

9. The system according to claim 1, wherein the stent is made from a metal selected from stainless steel and nitinol.

10. The system according to claim 1, wherein the stent further comprises a plurality of radially-disposed barbs.

11. The system according to claim 1, further comprising a sheath having a sheath lumen, wherein at least a portion of the prosthesis is radially disposed within the sheath lumen in a compressed configuration.

12. The delivery device according to claim 1, wherein:

the inner surface comprises a material selected from metal and ceramic;

the inner surface further comprises PTFE;

the stent comprises a plurality of radially-disposed barbs and is made from a metal selected from stainless steel and nitinol; and

the system further comprises a sheath having a sheath lumen, wherein at least a portion of the prosthesis is radially disposed within the sheath lumen in a compressed configuration.

13. A method of manufacturing an endoluminal prosthesis delivery and deployment system, the method comprising the steps of:

providing a prosthesis having a proximal end and a distal end, at least one of the proximal and distal ends including a self-expanding stent having a hardness;

providing a cover having a cavity defining an inner surface, the inner surface having a hardness that is equal to or greater than the hardness of the stent; and

retaining at least a portion of the stent within the cavity so that the stent is biased into contact with the inner surface.

14. The method according to claim 13, wherein the cover providing step comprises providing a metallic inner surface.

15. The method according to claim 13, wherein the cover providing step comprises providing a ceramic inner surface.

16. The method according to claim 13, wherein the cover providing step comprises providing an inner surface made of anodized aluminum.

17. The method according to claim 13, wherein the cover providing step further comprises providing an inner surface that includes PTFE.

18. The method according to claim 13, wherein the cover providing step comprises inserting a metal bushing into the cavity, the bushing having an inner lumen that defines the inner surface of the cover.

19. The method according to claim 13, wherein the cover providing step comprises applying a metallized coating to the cavity to form the inner surface.

20. The method according to claim 13, wherein the cover providing step comprises providing an inner surface made of anodized aluminum and PTFE, the cover providing step further comprising at least one of the steps of:

inserting a metal bushing into the cavity, the bushing having an inner lumen that defines the inner surface of the cover; and

applying a metallized coating to the cavity to form the inner surface.