Medical device delivery systems

Patent metadata

Field	Value
Publication number	US-9277993-B2
Application number	US-201213714860-A
Country	US
Kind code	B2
Filing date	Dec 14, 2012
Priority date	Dec 20, 2011
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

Medical device delivery systems and methods for making and using medical device delivery systems are disclosed. An example medical device delivery system may include an outer sheath. An inner catheter may be disposed within the outer sheath. The inner catheter may have a distal end. A tube extension may be coupled to the distal end of the inner catheter and may extend distally therefrom. The tube extension may be configured to shift between a first elongated configuration and a second shortened configuration.

First claim

What is claimed is:

1. A medical device delivery system, comprising:
an outer sheath;
an inner catheter disposed within the outer sheath, the inner catheter having a distal end;
a tube extension coupled to the distal end of the inner catheter and extending distally therefrom to an attached distal nose cone; and
a valve implant releasable coupled to the inner catheter;
wherein the tube extension is configured to shift between a first elongated configuration and a second shortened configuration;
wherein the outer sheath is configured to shift the nose cone and attached tube extension between the first elongated configuration and the second shortened configuration of the tube extension.

2. The system of claim 1 , wherein the tube extension includes a coil.

3. The system of claim 2 , wherein the coil has an open pitch when the tube extension is in the first elongated configuration and the coil has a closed pitch when the tube extension is in the second shortened configuration.

4. The system of claim 1 , wherein the tube extension includes a resilient polymer.

5. The system of claim 4 , wherein the resilient polymer has a first thickness when the tube extension is in the first elongated configuration and the resilient polymer has a second thickness greater than the first thickness when the tube extension is in the second shortened configuration.

6. The system of claim 1 , wherein the tube extension includes a tubular member having a plurality of slots formed therein.

7. The system of claim 6 , wherein at least some of the slots are open when the tube extension is in the first elongated configuration and wherein at least some of the slots are closed when the tube extension is in the second shortened configuration.

8. The system of claim 1 , wherein the valve implant includes a replacement aortic valve.

Assignees

• Boston Scient Scimed Inc

Inventors

• Gamarra Randy
• Tung David
• Paul David J

Classifications

• A61M25/0108

  using radio-opaque or ultrasound markers · CPC title

• A61M2025/0004

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

• F04C2270/0421

  Controlled or regulated · CPC title

• A61M25/0012

  with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils · CPC title

• A61M25/0074

  Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable · CPC title