SYSTEMS AND DELIVERY HANDLES FOR DELIVERING PROSTHETIC HEART VALVES DISPOSED ON VALVE HOLDERS

• US 20120316639A1
• Filed: 06/12/2012
• Published: 12/13/2012
• Est. Priority Date: 06/13/2011
• Status: Active Grant

• Current Assignee: Edwards Lifesciences Corporation
• Original Assignee: Edwards Lifesciences Corporation
• Inventors: Kleinschrodt, Holly
• Granted Patent: US 9,101,471 B2
• Time in Patent Office: Days
• US Class Current: 623/2.1
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2250/006 modular

Abstract

A system delivering a prosthetic heart valve includes a delivery handle, a heart valve, and a valve holder. The delivery handle includes a rod, a button, and a valve holder attachment interface, where the button is configured to move between a first position and a second position along an axial length of the rod, and the valve holder attachment interface is mechanically coupled to the button and configured to move between an engaged position and a disengaged position. The heart valve includes a prosthetic valve. The valve holder is connected to a proximal end of the heart valve and includes a boss, a holder ring, and a handle attachment interface. The holder ring includes the heart valve mounted thereto and is coupled to the boss, and the handle attachment interface is formed on the boss and is configured to receive and mate with the valve holder attachment interface.

Claims

1. A system for delivering a prosthetic heart valve comprising:

a delivery handle including a rod, a button, and a valve holder attachment interface, the button configured to move between a first position and a second position along an axial length of the rod, and the valve holder attachment interface mechanically coupled to the button and configured to move between an engaged position and a disengaged position;

a prosthetic heart valve; and

a valve holder coupled to the heart valve, the valve holder including a boss, a holder ring, and a handle attachment interface, the holder ring including the heart valve mounted thereto and coupled to the boss, and the handle attachment interface formed on the boss and configured to receive and mate with the valve holder attachment interface,

wherein;

when the button is in the first position, the valve holder attachment interface is in the engaged position to mechanically couple to the handle attachment interface, and

when the button is moved to the second position, the valve holder attachment interface moves correspondingly to the disengage position to mechanically release from the handle attachment interface.

2. The system of claim 1, wherein:

the valve holder attachment interface comprises at least two prongs spaced apart and configured to contract relative to each other when the button is in the first position and to expand relative to each other when the button is in the second position.

3. The system of claim 2, wherein the handle attachment interface includes a channel configured to receive the at least two prongs.

4. The system of claim 3, wherein the channel comprises an annular channel.

5. The system of claim 3, wherein the handle attachment interface includes at least two channels corresponding with and configured to receive the at least two prongs.

6. The system of claim 3, wherein the channel is formed on an outer diameter of the boss.

7. The system of claim 3, wherein the channel is formed on an end of the boss.

8. The system of claim 2, wherein:

the system further comprises a shaft mounted on a portion of the rod;

the shaft includes an axial length and a slit extending along a portion of the axial length;

the valve holder attachment interface includes a cylinder from which the at least two prongs extend that is disposed between the rod and the shaft; and

the button is coupled to a portion of the cylinder and extends through the slit.

9. The system of claim 2, further comprising:

a shaft disposed on a distal end of the rod and having an axial slit,

a button slidably mounted to the shaft through the axial slit, configured to slide along a portion of a length of the axial slit between the first position and the second position, and including a slot, and

at least two prongs each having a stem extending from a proximal end of each prong, the stem extending through the slot of the button and rotationally coupled to the shaft to provide a pivot point,

wherein;

when the button is in the first position, the at least two prongs are in a contracted position for mechanically coupling to the valve holder, and

when the button is moved to the second position, the at least two prongs rotate at the pivot point on the shaft to an expanded position to mechanically release from the valve holder.

10. The system of claim 1, wherein:

the valve holder attachment interface has a stem and a first hook, the stem is coupled to the button and the hook extends at least partially outside of the shaft; and

the handle attachment interface includes a second hook configured to engage with the first hook.

11. The system of claim 10, further comprising:

a hollow shaft through which the rod extends having an axial length and a slit along a portion of the axial length, wherein the button extends through the slit.

12. They system of claim 11, wherein:

the button is configured to slide along the slit to move the first hook between a retracted position to engage the second hook and a lengthened position to release the second hook.

13. The system of claim 12, wherein:

the delivery handle further includes a spring disposed between the shaft and the rod and extending between the button and the valve first hook.

14. The system of claim 13, wherein:

the shaft includes a radially inward flange against which the spring abuts.

15. A delivery handle for delivering a prosthetic heart valve disposed on a valve holder, the delivery handle comprising:

a rod;

a shaft disposed on a distal end of the rod and having an axial slit;

a button extending through the axial slit and configured to move along a portion of a length of the axial slit between a first position and a second position, the button including a slot; and

at least two prongs each having a stem extending from a proximal end of the prong, the stem extending through the slot of the button and rotationally coupled to the shaft to provide a pivot point,

wherein;

when the button is in the first position, the at least two prongs are in a contracted position for mechanically coupling to the valve holder, and

when the button is moved to the second position, the at least two prongs rotate at the pivot point on the shaft to an expanded position to mechanically release from the valve holder.

16. The delivery handle of claim 15, wherein:

each of the at least two prongs includes a tooth,

when the button is in the first position, each tooth extends past a distal end of the shaft tooth to grip the valve holder, and

when the button is in the second position, each tooth is released from the valve holder.

17. A delivery handle for delivering a prosthetic heart valve disposed on a valve holder, the delivery handle comprising:

a rod;

a hollow shaft through which the rod extends having an axial length and a slit along a portion of the axial length;

a valve holder attachment interface comprising a stem and a hook, the stem disposed between the rod and the hollow shaft, and the hook extending at least partially outside of the shaft; and

a button coupled to the stem. extending out of the slit of the hollow shaft, and configured to move along the axial length of the rod from a first position to a second position,

wherein;

when the button is in the first position, the hook is disposed in a retracted position to mechanically engage an attachment interface on the valve holder, and

when the button is in the second position, the hook is in a lengthened position to mechanically release from the attachment interface on the valve holder.

18. The delivery handle of claim 17, further comprising:

a spring disposed between the shaft and the rod and extending between the button and the hook.

19. The delivery handle of claim 18, wherein:

the shaft includes a radially inward flange against which the spring abuts.

20. A delivery handle for delivering a prosthetic heart valve disposed on a valve holder, the delivery handle comprising:

a rod;

a hollow shaft through which the rod extends having an axial length and a slit extending along a portion of the axial length;

a valve holder attachment interface including a cylinder and at least two prongs, the cylinder disposed between the rod and the hollow shaft, and the at least two prongs spaced apart and extending from the cylinder and configured to expand and contract relative to each other; and

a button coupled to a portion of the cylinder and extending through the slit to move from a first position to a second position,

wherein;

when the button is in the first position, the at least two prongs expand relative to each other to mechanically couple to an attachment interface on the valve holder, and

when the button is in the second position, the at least two prongs contract relative to each other to mechanically release from the attachment interface on the valve holder.

21. The delivery handle of claim 20, wherein the at least two prongs are configured to be angled away from each other when expanded.

22. The delivery handle of claim 20, wherein the at least two prongs comprise a biocompatible spring material.