Method and apparatus for compressing/loading stent-valves

Patent metadata

Field	Value
Publication number	US-10245145-B2
Application number	US-201415022525-A
Country	US
Kind code	B2
Filing date	Sep 16, 2014
Priority date	Sep 16, 2013
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

Apparatus (40) for compressing a transcatheter cardiac stent-valve (10) comprises: a first compressor stage (100) including a hollow channel (42) with a tapered interior surface configured for compressing a stent-valve in response to longitudinal advancement of the stent-valve within the channel; and a second compressor stage (102) comprising a crimper for compressing a portion of the stent-valve without longitudinal advancement.

First claim

The invention claimed is:

1. An apparatus configured to compress a cardiac stent-valve for loading into a delivery catheter, the apparatus comprising:
a first compressor stage for compressing the stent-valve,
wherein the first compressor stage comprises a hollow channel, and the first compressor stage is configured for progressively compressing the stent-valve in response to, or in association with, longitudinal advancement of an advancing member against the stent-valve within the hollow channel; and
a second compressor stage coupled or couplable to the first compressor stage and configured to further compress a portion of the stent-valve after passing through the first compressor stage,
wherein the second compressor stage comprises a crimper having jaws defining a chuck.

2. The apparatus of claim 1 , wherein the second compressor stage is configured to compress a portion of the stent-valve at the second compressor stage without advancement of the stent-valve within the second compressor stage.

3. The apparatus of claim 1 , wherein the second compressor stage is releasably coupled at, or to be at, an exit of the first compressor stage.

4. The apparatus of claim 1 , wherein the crimper comprises a plurality of movable elements.

5. The apparatus of claim 1 , wherein the first and second compressor stages are operated by respective rotary actuators that are rotatable about a common axis, optionally a longitudinal axis of the apparatus.

6. The apparatus of claim 1 , wherein the second compressor stage is releasably securable to the first compressor stage using a screw threaded actuator for actuating the second compressor stage.

7. The apparatus of claim 1 , wherein the first compressor stage comprises one or more of (i) a mover for applying to a stent-valve within the hollow channel, a pushing force from radially outside the hollow channel; and/or (ii) a driver for applying a pushing force radially outside the hollow channel to a portion of the mover radially outside the hollow channel.

8. The apparatus of claim 7 , wherein the mover comprises a ring from which plural limbs project inwardly, the limbs sliding in slots through a wall of the channel, for applying a pushing force to a stent-valve within the channel.

Assignees

• Symetis Sa

Inventors

• Mantanus Luc
• Lombardi Fabien
• Simonin Pierre
• Biadillah Youssef
• Hefti Jean-Luc
• Delaloye Stéphane

Classifications

• A61F2/9522

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

• A61F2/2418

  Scaffolds therefor, e.g. support stents · CPC title

• A61F2250/0091

  transparent or translucent · CPC title

• A61F2220/0008

  Fixation appliances for connecting prostheses to the body · CPC title

• A61F2230/0054

  V-shaped · CPC title