Catheter Having Movable Tubular Structure And Proximal Stopper

Patent metadata

Field	Value
Publication number	US-2016038321-A1
Application number	US-201314653582-A
Country	US
Kind code	A1
Filing date	Nov 4, 2013
Priority date	Mar 12, 2013
Publication date	Feb 11, 2016
Grant date	—

Abstract

Catheter including an inner tubular member, an outer tubular member movable relative to the inner tubular member, and a movable tubular structure coupled to the outer tubular member. A medical device disposed about a distal end portion of the inner tubular member. A proximal stopper is provided having a distal end and disposed proximal to a proximal end of the movable tubular structure. The distal end of the proximal stopper is spaced from the proximal end of the movable tubular structure at least a longitudinal length dimension of the medical device, wherein the outer tubular member and the movable tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member.

First claim

What is claimed is:

1 . A catheter comprising:
an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen defined therein; an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member; a medical device disposed about the distal end portion of the inner tubular member, the medical device having a longitudinal length dimension; a movable tubular structure coupled to the outer tubular member; and a proximal stopper having a distal end and disposed proximal to a proximal end of the movable tubular structure, the distal end of the proximal stopper being spaced from the proximal end of the movable tubular structure at least the longitudinal length dimension of the medical device, wherein the outer tubular member and the movable tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member.

2 . The catheter according to claim 1 , wherein the longitudinal length dimension of the medical device comprises a range from approximately 10 mm to approximately 250 mm.

3 . The catheter according to claim 1 , wherein the medical device comprises an outer cross dimensional profile ranging from approximately 2 French to approximately 6 French.

4 . The catheter according to claim 1 , wherein the medical device comprises a self-expanding stent.

5 . The catheter according to claim 1 , wherein the movable tubular structure is disposed between the outer tubular member and the inner tubular member, the movable tubular structure comprising a body member having an outer surface with a recess defined therein, the outer tubular member received within the recess to form a trough along a portion of an exterior surface of the outer tubular member, the trough having a filler disposed therein to couple the outer tubular member to the body member of the movable tubular structure.

6 . The catheter according to claim 1 , wherein the movable tubular structure is disposed external to a body lumen during deployment of the medical device.

7 . The catheter according to claim 1 , wherein the movable tubular structure includes a proximal movable tubular structure and a distal movable tubular structure, wherein a pressure chamber is defined between the proximal and distal movable tubular structures.

8 . The catheter according to claim 1 , further comprising:
a second movable tubular structure coupled to the distal end of the outer tubular member; and a distal sheath coupled to the outer tubular member by the second movable tubular structure, the distal sheath disposed about the medical device and being movable relative the inner tubular member by movement of the outer tubular member in the proximal direction to deploy the medical device from the inner tubular member.

9 . The catheter according to claim 1 , wherein the distal sheath comprises a suitable hoop strength and a suitable flexibility to cover and secure the medical device on the inner tubular member.

10 . The catheter according to claim 1 , wherein the distal end of the proximal stopper is spaced from the proximal end of the movable tubular structure approximately the longitudinal length dimension of the medical device.

11 . The catheter according to claim 1 , wherein the distal end of the proximal stopper is spaced approximately 12 mm to approximately 312 mm from the proximal end of the movable tubular structure.

12 . The catheter according to claim 1 , further comprising a proximal adapter, wherein the proximal stopper is disposed distal to and proximate to the proximal adapter.

13 . The catheter according to claim 1 , wherein the inner tubular member has a fluid lumen defined therein, the fluid lumen having a fluid flow port defined by the exterior surface along the distal end portion of the inner tubular member, the catheter further comprising:
a proximal seal extending from the interior surface of the outer tubular member toward the exterior surface of the inner tubular member, the proximal seal located proximal to the fluid flow port; a distal seal extending from the exterior surface of the inner tubular member toward the interior surface of the outer tubular member, the distal seal located distal to the fluid flow port; and a pressure chamber defined by the proximal seal, the distal seal, the exterior surface of the inner tubular member, and interior surface of the outer tubular member, with the pressure chamber in fluid communication with the fluid flow port, wherein fluid introduced through the fluid flow port and into the pressure chamber applies a force on the proximal seal to urge the outer tubular member and the movable tubular structure in the proximal direction.

14 . The catheter according to claim 1 , further comprising:
a second movable tubular structure coupled to the outer tubular member at a distal end of the catheter; and at least one wire device to couple the second movable tubular structure with the movable tubular structure, wherein the outer tubular member is movable in the proximal direction with movement of the movable tubular structure to deploy the medical device.

15 . The catheter according to claim 14 , wherein the at least one wire device is disposed within the catheter along a lumen defined therein.

16 . The catheter according to claim 14 , wherein the at least one wire device is disposed between the outer tubular member and the inner tubular member.

17 . The catheter according to claim 14 , wherein the at least one wire device comprises a first and second wire.

18 . The catheter according to claim 14 , wherein the at least one wire device comprises up to 10 wires.

19 . The catheter according to claim 14 , further comprising:
a distal sheath coupled to the outer tubular member by the second movable tubular structure, the distal sheath disposed about the medical device and being movable relative the inner tubular member by movement of the at least one wire device in the proximal direction to deploy the medical device from the inner tubular member.

20 . The catheter according to claim 19 , wherein the distal sheath has an outer cross dimension greater than an outer cross dimension of the outer tubular member.

21 . The catheter according to claim 19 , wherein the distal sheath has a flexibility and a stiffness different than a flexibility and stiffness of the outer tubular member.

22 . The catheter according to claim 19 , wherein the outer cross dimension of the distal sheath is between approximately 2 French to approximately 6 French.

23 . A catheter comprising:
an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen and a fluid lumen defined therein, the fluid lumen having a fluid flow port defined by the exterior surface along the distal end portion of the inner tubular member; an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member; a first movable tubular structure coupled to the outer tubular member and disposed at the proximal end of the outer tu

Assignees

• Abbott Cardiovascular Systems

Inventors

• Shumer Daniel
• Bei Nianjiong Joan

Classifications

• A61F2250/0029

  differing in bending or flexure capacity · CPC title

• A61F2/95

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61M2025/0175

  having telescopic features, interengaging nestable members movable in relations to one another · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• A61M2025/0004

  having two or more concentrically arranged tubes for forming a concentric catheter system · CPC title