Delivery Systems for Prosthetic Heart Valves

• US 20090192586A1
• Filed: 01/23/2009
• Published: 07/30/2009
• Est. Priority Date: 01/24/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Rothstein, Paul, Tabor, Charles, Bloom, Eliot
• Granted Patent: US 9,149,358 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• 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 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

A delivery system for delivery of an implantable stented device to a body lumen, the device having a plurality of structures at its proximal end, wherein the delivery system comprises a first body portion removably attached to a second body portion and wherein the second body portion includes a plurality of attachment components at its distal end for attachment to the plurality of structures at the proximal end of the device.

Claims

1. A delivery system for delivery of an implantable stented device to a body lumen, the device comprising a plurality of structures at a proximal end of the device, wherein the delivery system comprises a first body portion removably attached to a second body portion and wherein the second body portion comprises a plurality of attachment components at its distal end for attachment to the plurality of structures at the proximal end of the device.

2. The delivery system of claim 1, wherein the device comprises a stented valve.

3. The delivery system of claim 2, wherein the plurality of structures at the proximal end of the stented valve comprises a plurality of stent crowns.

4. The delivery system of claim 1, wherein the removable attachment between the first and second body portions comprises a dovetail connection.

5. The delivery system of claim 1, wherein the removable attachment between the first and second body portions comprises a threaded connection.

6. The delivery system of claim 1, wherein the removable attachment between the first and second body portions comprises a frictional connection.

7. The delivery system of claim 1, wherein the removable attachment between the first and second body portions comprises a snap-fit connection.

8. The delivery system of claim 1, wherein the second body portion comprises a cartridge.

9. The delivery system of claim 1, wherein at least one of the plurality of attachment components comprises a wire having a coiled distal end that is removeably attachable to one of the structures of the stented device.

10. The delivery system of claim 1, wherein the plurality of attachment components comprises a plurality of wires having a coiled distal end.

11. The delivery system of claim 10, further comprising a sleeve at least partially surrounding at least a portion of a first wire of the plurality of wires, wherein the coiled distal end of the first wire is extendible beyond a distal end of the sleeve and retractable into the sleeve.

12. The delivery system of claim 1, wherein the plurality of attachment components comprises a plurality of wires having a distal end and further comprising a plurality of sleeves, wherein each sleeve at least partially surrounds one of the wires and is axially slideable relative to the distal end of the wire that it surrounds.

13. A cartridge of a delivery system in combination with an implantable stented device, the cartridge comprising a cylindrical body and a plurality of retaining structures extending beyond a distal end of the cylindrical body, wherein each of the plurality of retaining structures comprises a portion that is removeably engageable with a proximal end of the stented device, and wherein a proximal end of the cylindrical body includes an attachment structure for removeable engagement between the cartridge and a base portion of the delivery system.

14. The combination of claim 13, wherein at least one of the retaining structures comprises a wire having a coiled distal end.

15. The combination of claim 14, wherein the cartridge further comprises a sleeve at least partially surrounding each of the wires.

16. A method of delivering a stented device to a body lumen, comprising the steps of:

removeably attaching a proximal end of a stented device to a distal end of a cartridge;

removeably attaching a proximal end of the cartridge to a distal end of a delivery system;

positioning the stented device at an implantation location; and

disengaging the stented device from the distal end of the cartridge.

17. The method of claim 16, further comprising the step of storing the cartridge and attached stented device in a solution after attaching the stented device to the distal end of the cartridge and before attaching the proximal end of the cartridge to the distal end of the delivery system.

18. The method of claim 17, further comprising the step of removing the cartridge and attached stented device from the solution by grasping the proximal end of the cartridge prior to attaching the proximal end of the cartridge to the distal end of the delivery system.

19. The method of claim 17, wherein the cartridge further comprises a plurality of wires extending from its distal end, wherein each of the wires comprises a distal end for removeable attachment to the proximal end of the stented device.

20. The method of claim 19, wherein the distal end of each of the wires comprises a coiled portion.