Coil shaft

• US 20070060996A1
• Filed: 09/09/2005
• Published: 03/15/2007
• Est. Priority Date: 09/09/2005
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Blix, John, Moberg, John, Burgmeier, Robert, Prindle, Katherine, Goodin, Richard, Gunderson, Richard
• Granted Patent: US 9,084,694 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids

Abstract

Systems for delivering medical devices, as well as related methods are described.

Claims

1. An implantable medical endoprosthesis delivery system, comprising:

an outer member; and

a coil including a plurality of spaced-apart windings,

wherein;

at least some of the spaced-apart windings surround a guidewire lumen of the system; and

the system is configured so that an implantable medical endoprosthesis can be disposed between the outer member and the plurality of windings.

2. The implantable medical endoprosthesis delivery system of claim 1, wherein an average distance between adjacent windings of the plurality of spaced-apart windings is at least about 20% of an average width of the windings.

3. The implantable medical endoprosthesis delivery system of claim 2, wherein the average distance between adjacent windings of the plurality of spaced-apart windings is at least about 30% of the average width of the windings.

4. The implantable medical endoprosthesis delivery system of claim 1, wherein the coil is a first coil and the delivery system further comprises a second coil, the plurality of spaced-apart windings of the first coil extending distally of the second coil.

5. The implantable medical endoprosthesis delivery system of claim 4, wherein the plurality of spaced-apart windings of the first coil has an outer diameter that is smaller than an outer diameter of the second coil.

6. The implantable medical endoprosthesis delivery system of claim 4, wherein the second coil is defined by a plurality of windings and an average distance between adjacent windings of the plurality of spaced-apart windings of the first coil is at least about 2 times greater than an average distance between adjacent windings of the second coil.

7. The implantable medical endoprosthesis delivery system of claim 6, wherein the average distance between adjacent windings of the plurality of spaced-apart windings of the first coil is at least about 10 times greater than the average distance between adjacent windings of the second coil.

8. The implantable medical endoprosthesis delivery system of claim 4, wherein at least one of the first and second coils includes at least two different filars.

9. The implantable medical endoprosthesis delivery system of claim 8, wherein the at least two different filars include a first filar having a first thickness and a second filar having a second thickness smaller than the first thickness.

10. The implantable medical endoprosthesis delivery system of claim 8, wherein the at least two different filars include a first filar having a first cross sectional shape and a second filar having a second cross sectional shape different from the first cross sectional shape.

11. The implantable endoprosthesis delivery system of claim 4, wherein first and second coils include at least one common filar.

12. The implantable medical endoprosthesis delivery system of claim 4, further comprising a tube at least partially surrounded by the plurality of spaced-apart windings of the first coil.

13. The implantable medical endoprosthesis delivery system of claim 12, wherein the tube is a first tube and the delivery system further comprises a second tube at least partially surrounded by the second coil, the second tube having an outer diameter larger than an outer diameter the first tube.

14. The implantable medical endoprosthesis delivery system of claim 1, further comprising a polymeric coating that contacts an outer surface of the coil.

15. The implantable medical endoprosthesis delivery system of claim 14, wherein the polymeric coating is an adhesive coating and the delivery system further comprises an outer polymeric coating that contacts an outer surface of the adhesive coating.

16. The implantable medical endoprosthesis delivery system of claim 14, further comprising a tube at least partially surrounded by the coil, wherein the polymeric coating secures at least some of the spaced-apart windings with respect to the tube.

17. The implantable medical endoprosthesis delivery system of claim 14, wherein the polymeric coating is formed from a material having a durometer of about 50 D or less.

18. An implantable medical endoprosthesis delivery system, comprising:

an outer member; and

first and second coils at least partially surrounded by the outer member,

wherein;

the second coil has an outer diameter larger than an outer diameter of the first coil; and

the system is configured so that an implantable medical endoprosthesis can be disposed between the outer member and at least a portion of at least one of the first and second coils.

19. The implantable medical endoprosthesis delivery system of claim 18, wherein at least a portion of the first coil extends distally of the second coil.

20. An implantable medical endoprosthesis delivery system, comprising:

an outer member; and

an inner member at least partially surrounded by the outer member,

wherein;

the inner member includes first and second adjacent filars,

the first filar has a cross-section different from a cross-section of the second filar; and

the system is configured so that an implantable medical endoprosthesis can be disposed between the outer and inner members.