RETAINERS FOR TRANSCATHETER HEART VALVE DELIVERY SYSTEMS

• US 20160374805A1
• Filed: 09/08/2016
• Published: 12/29/2016
• Est. Priority Date: 09/17/2010
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Wang, Huisun, Glazier, Valerie J., Daly, Jacob John
• Granted Patent: US 10,799,351 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube

Abstract

A delivery device 10 for a collapsible prosthetic heart valve includes a catheter assembly 16 including a shaft 26 around which a compartment 23 is defined, the compartment 23 being adapted to receive the valve in an assembled condition, and a retainer 30 including a pusher 32 and a holder 34 adapted to retain a stent portion 106 of the valve. The catheter assembly 16 also includes a distal sheath 24 adapted to selectively cover and uncover the compartment 23 and the valve, the distal sheath 24 extending around the shaft 26 at least when the distal sheath 24 covers the compartment 23. The pusher 32 includes one or more recesses 40 in a retention edge 33 thereof, each recess 40 being adapted to receive a junction 107 at an end of the stent portion 106 of the valve. The holder 34 includes one or more elongated ribs 50, each rib 50 being adapted to fit into a cell opening 108 of the stent portion 106 of the valve.

Claims

1. A delivery device for a collapsible prosthetic heart valve, the delivery device comprising:

a catheter assembly including a principal shaft around which a compartment is defined, the compartment being adapted to receive the valve in an assembled condition, the catheter assembly further including a distal sheath adapted to selectively cover and uncover the compartment and the valve, the distal sheath extending around the principal shaft at least when the distal sheath covers the compartment; and

a retainer, including;

a retention portion fixedly connected to the principal shaft and including a plurality of acceptances adapted to receive retention members extending from an end of a stent portion of the valve; and

a spacer portion fixedly connected to the principal shaft and having a plurality of circumferentially spaced elongated ribs, each adjacent pair of ribs defining a channel therebetween, each channel being adapted to receive a junction at the end of the stent portion of the valve.

2. The delivery device of claim 1, wherein each acceptance is shaped to substantially match the shape of outward-facing surfaces of a corresponding one of the retention members.

3. The delivery device of claim 1, wherein the principal shaft is elongated in a longitudinal direction, and the elongated ribs each extend in the longitudinal direction.

4. The delivery device of claim 1, wherein the principal shaft is elongated along a longitudinal axis, and the elongated ribs are spaced uniformly about the longitudinal axis in a circumferential direction around the spacer portion.

5. The delivery device of claim 1, wherein each junction is V-shaped.

6. The delivery device of claim 1, wherein each acceptance is aligned in the longitudinal direction with a corresponding one of the channels.

8. The delivery device of claim 1, wherein each acceptance is shaped to substantially match the shape of outward-facing surfaces of a corresponding one of the retention members.

9. The delivery device of claim 1, wherein the principal shaft is elongated in a longitudinal direction, and the elongated ribs each extend in the longitudinal direction.

10. The delivery device of claim 1, wherein the principal shaft is elongated along a longitudinal axis, and the elongated ribs are spaced uniformly about the longitudinal axis in a circumferential direction around the spacer portion.

11. The delivery device of claim 1, wherein each junction is V-shaped.

12. The delivery device of claim 1, wherein each acceptance is aligned in the longitudinal direction with a corresponding one of the channels.

13. The delivery device of claim 1, wherein each junction at the end of the stent portion of the valve is separated from other ones of the junctions by the channels.

15. The method of claim 1, wherein the principal shaft is elongated in a longitudinal direction, and the elongated ribs each extend in the longitudinal direction.

16. The method of claim 1, wherein the principal shaft is elongated along a longitudinal axis, and the elongated ribs are spaced uniformly about the longitudinal axis in a circumferential direction around the spacer portion.

17. The method of claim 1, wherein each acceptance is aligned in the longitudinal direction with a corresponding one of the channels.

18. The method of claim 1, wherein during the mounting step, each junction at the end of the stent portion of the valve is separated from other ones of the junctions by the channels.

19. The method of claim 1, wherein the mounting step includes mounting the valve such that the valve extends distally from the retainer, and the inserting step includes inserting the delivery device into the femoral artery of the patient.

20. The method of claim 1, wherein the mounting step includes mounting the valve such that the valve extends proximally from the retainer, and the inserting step includes inserting the delivery device into the apex of the heart of the patient.

7. A delivery device, comprising:

a collapsible prosthetic heart valve having a stent portion including a plurality of junctions at an end thereof and a plurality of cell openings defined therein, and retention members each extending from a corresponding one of the junctions at the end of the stent portion of the valve;

a catheter assembly including a principal shaft around which a compartment is defined, the collapsible prosthetic heart valve positioned in the compartment in an assembled condition, the catheter assembly further including a distal sheath adapted to selectively cover and uncover the compartment and the valve, the distal sheath extending around the principal shaft at least when the distal sheath covers the compartment; and

a retainer, including;

a retention portion fixedly connected to the principal shaft and including a plurality of acceptances, each retention member positioned in a corresponding one of the acceptances; and

a spacer portion fixedly connected to the principal shaft and having a plurality of circumferentially spaced elongated ribs, each adjacent pair of ribs defining a channel therebetween, each junction at the end of the stent portion of the valve positioned in a corresponding one of the channels.

14. A method of delivering a collapsible prosthetic heart valve, the method comprising:

providing a delivery device including a principal shaft around which a compartment is defined, the principal shaft extending along a longitudinal axis of the delivery device extending in first and second opposite longitudinal directions, a distal sheath adapted to selectively cover and uncover the compartment, the distal sheath extending around the principal shaft at least when the distal sheath covers the compartment, and a retainer including a retention portion and a spacer portion, the retention portion fixedly connected to the principal shaft and including a plurality of acceptances, and the spacer portion fixedly connected to the principal shaft and having a plurality of circumferentially spaced elongated ribs, each adjacent pair of ribs defining a channel therebetween;

mounting in the compartment the collapsible prosthetic heart valve having a stent portion including a plurality of junctions at an end thereof and a plurality of cell openings defined therein, and retention members each extending from a corresponding one of the junctions at the end of the stent portion of the valve, the valve being mounted so that each retention member is positioned in a corresponding one of the acceptances, and each junction is positioned in in a corresponding one of the channels;

moving the distal sheath to cover the compartment and the valve;

inserting the delivery device in a patient to position the valve at a target location; and

deploying the valve by moving the distal sheath to uncover the compartment and the valve.