System and method for crimping a prosthetic valve

• US 10,639,147 B2
• Filed: 04/14/2017
• Issued: 05/05/2020
• Est. Priority Date: 06/24/2016
• Status: Active Grant

• Current Assignee: Edwards Lifesciences Corporation
• Original Assignee: Edwards Lifesciences Corporation
• Inventors: Landon, David Robert, Rabito, Glen T., Luong, Hieu Minh
• Primary Examiner(s): Cigna, Jacob J
• Application Number:
  US15/487,881
• Publication Number:
  US 20170367821A1
• Time in Patent Office: 1,117 Days
• Field of Search: None
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/9525 using a funnel
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2250/0069 Sealing means
• CPC Class Codes: B21D 39/04 of tubes with tubes; of tubes with rods crimped pipe joints as such F16L13/14

Abstract

Embodiments of a crimping device for crimping a radially expandable and compressible prosthetic valve are disclosed. A crimping device can comprise a housing configured to receive a prosthetic valve in a radially expanded state. The housing member can include a funnel segment and an outlet in communication with the funnel segment. The crimping device can further comprise an actuator rotatably coupled to the housing, wherein rotation of the actuator relative to the housing causes the prosthetic valve to move axially through the funnel segment such that at least a portion of the prosthetic valve compresses radially by engagement with the funnel segment and exits the crimping device via the outlet.

Claims

1. A crimping device for crimping a radially expandable and compressible prosthetic valve, the crimping device comprising:

a housing configured to receive a prosthetic valve in a radially expanded state, the housing including a funnel segment and an outlet in communication with the funnel segment;

an actuator rotatably coupled to the housing, wherein rotation of the actuator relative to the housing causes the prosthetic valve to move axially through the funnel segment such that at least a portion of the prosthetic valve compresses radially by engagement with the funnel segment and exits the crimping device via the outlet; and

a pusher member extending coaxially through the actuator and configured to abut the prosthetic valve within the housing, wherein the pusher member is rotatably coupled to the actuator such that the actuator is rotatable relative to the pusher member and rotation of the actuator causes axial movement of the pusher member relative to the housing, thereby pushing the prosthetic valve through the housing.

2. The crimping device of claim 1, wherein the pusher member comprises an internal cavity, the internal cavity comprising a plurality of longitudinally extending ribs configured to contact the prosthetic valve during radial compression.

3. The crimping device of claim 1, wherein the pusher member includes an annular groove configured to receive an end portion of the prosthetic valve.

4. The crimping device of claim 1, wherein rotation of the actuator causes the actuator to move axially over the housing.

5. The crimping device of claim 1, wherein the pusher member comprises a deflectable lip and a groove configured to receive an inwardly projecting annular ledge of the actuator for releasable engagement with the actuator.

6. The crimping device of claim 1, wherein the housing comprises two or more housing components, wherein each housing component comprises a portion of the funnel.

7. The crimping device of claim 6, further comprising a retaining member configured to releasably retain the two or more housing components together.

8. A crimping device for crimping a radially expandable and compressible prosthetic valve, the crimping device comprising:

a housing having an outlet and an internal surface, the internal surface having a plurality of ribs configured to receive a prosthetic valve in a radially expanded state;

a pusher member that is axially movable relative to the housing, wherein the pusher member is configured to abut an end of the prosthetic valve and axial movement of the pusher member relative to the housing causes radial compression of the prosthetic valve and axial movement of the prosthetic valve through the outlet in a radially compressed, delivery configuration; and

an actuator that is rotatable relative to the housing and the pusher member to cause axial movement of the pusher member relative to the housing.

9. The crimping device of claim 8, wherein the pusher member further includes a plurality of fins disposed between the plurality of ribs and configured to slidingly engage the plurality of ribs during axial movement of the pusher member.

10. The crimping device of claim 8, wherein the pusher member is rotatably coupled to the actuator such that the actuator is rotatable relative to the pusher member.

11. The crimping device of claim 8, wherein the pusher member comprises a cylindrical wall that extends coaxially through the actuator and into the housing.

12. The crimping device of claim 8, wherein the housing further comprises a tapered internal wall that terminates at the outlet.

13. The crimping device of claim 12, wherein the internal wall causes radial compression of the prosthetic valve during axial movement of the pusher member relative to the housing.