Hydration delivery system for stents

Patent metadata

Field	Value
Publication number	US-10835401-B2
Application number	US-201715852716-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Dec 29, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A stent delivery device is provided that includes an inner member defining a distal tip and a stent holding region, and an outer tubular member slidingly disposed over the inner member and configured to engage the distal tip. Seal members may be disposed on one or more of an outer surface of the inner member, the distal tip, and the outer tubular member. The seal members define a liquid-tight sealed chamber surrounding the stent holding region.

First claim

What is claimed is:

1. A stent delivery device comprising:
an inner member having a distal tip and a stent holding region proximal of the distal tip,
an outer tubular member slidingly disposed over the inner member, the outer tubular member having a distal end configured to engage the distal tip while radially surrounding an entire length of the stent holding region, wherein when the distal end engages the distal tip, the outer member is configured to radially compress a stent disposed between the inner member and outer member along the stent holding region;
at least one first seal member disposed between the inner member and the outer tubular member proximal of the stent holding region; and
at least one second seal member disposed between the distal tip and the outer tubular member;
wherein a combination of the first and second seal members defines a liquid-tight sealed chamber located radially between an outer surface of the stent holding region of the inner member and an inner surface of the outer tubular member.

2. The stent delivery device of claim 1 , wherein the first seal member is disposed on an outer surface of the inner member.

3. The stent delivery device of claim 2 , wherein the second seal member is disposed on an inner surface of the distal end of the outer tubular member.

4. The stent delivery device of claim 1 , wherein the second seal member is disposed on an inner surface of the distal end of the outer tubular member.

5. The stent delivery device of claim 1 , wherein the second seal member includes at least one circumferential protrusion disposed on an inner surface of the distal end of the outer tubular member.

6. The stent delivery device of claim 5 , wherein the distal tip includes a groove configured to receive the protrusion.

7. The stent delivery device of claim 1 , wherein the inner member includes a lumen with at least one port configured to deliver liquid to the chamber.

8. The stent delivery device of claim 7 , wherein the port includes a plurality of ports extending from the lumen into the chamber, the plurality of ports disposed along the stent holding region.

9. The stent delivery device of claim 7 , wherein the lumen extends from a proximal region of the inner member to the plurality of ports.

10. A stent delivery device comprising;
an inner member having a distal tip, a stent holding region, and at least one first seal member disposed on an outer surface of the inner member proximal of the stent holding region; and
an outer tubular member surrounding the stent holding region of the inner member while a distal end of the outer tubular member engages the distal tip, the outer tubular member longitudinally slideable relative to the inner member;
wherein at least one of the distal tip and the distal end of the outer tubular member includes at least one second seal member, wherein a combination of the first and second seal members defines a liquid-tight sealed chamber located radially between an outer surface of the stent holding region of the inner member and an inner surface of the outer tubular member.

11. The stent delivery device of claim 10 , wherein the second seal member includes at least one circumferential protrusion disposed on the inner surface of the outer tubular member.

12. The stent delivery device of claim 11 , wherein the distal tip includes a groove configured to receive the protrusion.

13. The stent delivery device of claim 10 , wherein the inner member includes a lumen with at least one port configured to deliver liquid to the chamber.

14. The stent delivery device of claim 13 , wherein the port includes a plurality of ports extending from the lumen into the chamber, the plurality of ports disposed along the stent holding region.

15. A stent delivery assembly comprising:
an outer tubular member having a lumen extending therethrough;
an inner member having a distal tip and a stent holding region proximal of the distal tip, the inner member slidingly disposed through the lumen of the outer tubular member with the outer tubular member surrounding the stent holding region while a distal end of the outer tubular member engages the distal tip;
a first seal member disposed between the inner member and the outer tubular member proximal of the stent holding region; and
a second seal member disposed between the inner member and the outer tubular member distal of the stent holding region;
wherein a combination of the first and second seal members defines a liquid-tight sealed chamber located radially between an outer surface of the stent holding region of the inner member and an inner surface of the outer tubular member; and
a stent disposed within the liquid-tight sealed chamber radially between the inner member and the outer tubular member, the stent positioned between the first seal member and the second seal member along the stent holding region.

16. The stent delivery assembly of claim 15 , wherein the inner member includes a lumen with at least one port configured to deliver liquid to the liquid-tight sealed chamber.

17. The stent delivery assembly of claim 15 , wherein the inner member includes a lumen with a plurality of ports disposed along the stent holding region, the plurality of ports in fluid communication with the liquid-tight sealed chamber.

18. The stent delivery assembly of claim 15 , wherein the second seal member includes at least one circumferential protrusion disposed on an inner surface of the outer tubular member.

19. The stent delivery assembly of claim 18 , wherein the distal tip includes a groove receiving the protrusion.

Assignees

• Boston Scient Scimed Inc

Inventors

• Christakis Laura E
• Harris Colby
• Fredrickson Gerald
• Libarnes Ramon

Classifications

• A61F2/962 Primary

  having an outer sleeve · CPC title

• A61F2/9522

  Means for mounting a stent or stent-graft onto or into a placement instrument · CPC title

• A61F2/86

  Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure · CPC title

• A61F2250/007

  O-rings · CPC title

• A61F2250/0069

  Sealing means · CPC title