Preparation methods for transcatheter heart valve delivery systems

• US 10,201,420 B2
• Filed: 04/29/2016
• Issued: 02/12/2019
• Est. Priority Date: 09/17/2010
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Inventors: Wang, Huisun
• Primary Examiner(s): Lynch, Robert
• Application Number:
  US15/142,613
• Publication Number:
  US 20160242907A1
• Time in Patent Office: 1,019 Days
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod

Abstract

A delivery device for a collapsible prosthetic heart valve includes a support shaft around which a compartment is defined, an inner shaft extending through the support shaft and adapted to slide relative to the support shaft along a longitudinal axis thereof, the inner shaft having a lumen therethrough, and a distal sheath operatively connected at a distal end to the inner shaft and slidable therewith. The compartment may receive the valve in an assembled condition, and may be selectively covered and uncovered by the distal sheath. A first flow path may provide flow communication between the lumen of the inner shaft and the compartment.

Claims

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

a support shaft around which a compartment is defined, the compartment being adapted to receive the valve in an assembled condition;

an inner shaft extending through the support shaft and adapted to slide relative to the support shaft along a longitudinal axis thereof, the inner shaft having a lumen therethrough;

a distal tip operatively connected to a distal end of the inner shaft;

a distal retainer interposed between the distal tip and the compartment;

a distal sheath operatively connected at a distal end to the inner shaft and slidable therewith, the distal sheath being adapted to selectively cover and uncover the compartment and the valve; and

a first flow path providing flow communication between the lumen of the inner shaft and the compartment at a location between the distal retainer and the distal tip.

2. The delivery device of claim 1, further comprising:

a pocket defined between the distal retainer and the distal tip.

3. The delivery device of claim 2, further comprising a second flow path providing flow communication between the pocket and the compartment.

4. The delivery device of claim 3, wherein the second flow path includes at least one through-hole in the distal retainer.

5. The delivery device of claim 2, further comprising an insert disposed in the pocket and defining an empty space between the insert and the distal tip, the empty space being in flow communication with the lumen of the inner shaft, the insert including one or more liquid passages extending between the empty space and the pocket.

6. The delivery device of claim 1, further comprising:

a proximal retainer located at a proximal end of the compartment; and

a cylindrical gap defined between a free end of the distal sheath and the proximal retainer.

7. A delivery system for a collapsible prosthetic heart valve, the delivery system comprising:

a support shaft around which a compartment is defined, the compartment being adapted to receive the valve in an assembled condition;

an inner shaft extending through the support shaft and adapted to slide relative to the support shaft along a longitudinal axis thereof, the inner shaft having a lumen therethrough in flow communication with an exterior of the delivery device;

a distal tip operatively connected to a distal end of the inner shaft;

a distal retainer interposed between the distal tip and the compartment;

a distal sheath operatively connected at a distal end to the inner shaft and slidable therewith, the distal sheath being adapted to selectively cover and uncover the compartment and the valve;

a first flow path providing flow communication between the lumen of the inner shaft and the compartment at a location between the distal retainer and the distal tip; and

a removable plug adapted for connection to the delivery device to occlude the flow communication between the lumen of the inner shaft and the exterior of the delivery device.

8. The delivery system of claim 7, further comprising a removable cap adapted for connection to a proximal end of the inner shaft to create a liquid-tight seal at the proximal end of the inner shaft.

9. The delivery system of claim 7, further comprising:

a flushing needle having a hollow needle shaft adapted to supply a flushing liquid to the compartment through the distal tip.

10. The delivery system of claim 7, further comprising:

a pocket defined between the distal retainer and the distal tip.

11. The delivery system of claim 10, further comprising a second flow path providing flow communication between the pocket and the compartment.

12. The delivery system of claim 11, wherein the second flow path includes at least one through-hole in the distal retainer.

13. The delivery system of claim 10, wherein the first flow path includes an aperture in a wall of the inner shaft providing flow communication between the lumen of the inner shaft and the pocket.

14. The delivery system of claim 10, further comprising an insert disposed in the pocket and defining an empty space between the insert and the distal tip, the empty space being in flow communication with the lumen of the inner shaft, the insert including one or more liquid passages extending between the empty space and the pocket.