MEDICAL DEVICES AND DELIVERY SYSTEMS FOR DELIVERING MEDICAL DEVICES

• US 20180214266A1
• Filed: 01/23/2018
• Published: 08/02/2018
• Est. Priority Date: 11/05/2004
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Paul, David J., Sutton, Benjamin T., McCollum, Brian K., Brandt, Brian D., Leung, Emma, Martin, Kenneth M., Salahieh, Amr, Hildebrand, Daniel K.
• Granted Patent: US 10,531,952 B2
• Time in Patent Office: Days
• 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 2/243 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 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2/97 the outer sleeve being splittable
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/006 modular

Abstract

Medical devices and delivery systems for delivering medical devices to a target location within a subject. In some embodiments the medical devices can be locked in a fully deployed and locked configuration. In some embodiments the delivery systems are configured with a single actuator to control the movement of multiple components of the delivery system. In some embodiments the actuator controls the independent and dependent movement of multiple components of the delivery system.

Claims

1. (canceled)

2. A medical delivery system, comprising:

an outer sheath having a lumen extending therethrough;

a delivery catheter having a proximal end and a distal end, the delivery catheter disposed within the outer sheath lumen;

a sheathing assist element having a proximal end and a distal end, wherein the proximal end is coupled to the distal end of the deliver catheter;

wherein the sheathing assist element is positionable within the outer sheath;

wherein the sheathing assist element has a first configuration and a second configuration; and

wherein the sheathing assist element is tapered from the distal end to the proximal end when in the second configuration, the sheathing assist element at its distal end having a transverse extent greater than that of the outer sheath.

3. The medical delivery system of claim 2 further comprising, a replacement heart valve coupled to the delivery catheter.

4. The medical delivery system of claim 3, wherein the distal end of the sheathing assist element has a diameter larger than a diameter of a proximal end of the replacement heart valve.

5. The medical delivery system of claim 3, wherein at least a portion of the replacement heart valve is disposed within at least a portion of the sheathing assist element.

6. The medical delivery system of claim 2, wherein the sheathing assist element is a polymer.

7. The medical delivery system of claim 2, wherein the sheathing assist element is a flexible braid structure.

8. The medical delivery system of claim 2, wherein the sheathing assist element has a cone shape.

9. The medical delivery system of claim 2, wherein the first configuration is a compressed configuration and the second configuration is an expanded configuration.

10. The medical delivery system of claim 9, wherein axial translation of the outer sheath in a proximal direction uncovers the sheathing assist element and permits the sheathing assist element to the take on the second configuration.

11. A medical delivery system, comprising:

a sheath having a proximal end and a distal end;

a sheathing assist element having a proximal end and a distal end, wherein the sheathing assist element is disposed at the distal end of the sheath; and

wherein the sheathing assist element is tapered from the distal end to the proximal end, the sheathing assist element having a transverse extent greater at the distal end than that of the sheath.

12. The medical delivery system of claim 11, further comprising a replacement heart valve disposed at the distal end of the sheath.

13. The medical delivery system of claim 12, wherein the distal end of the sheathing assist element has a diameter larger than the diameter of a proximal end of the replacement heart valve.

14. The medical delivery system of claim 11, wherein the sheathing assist element has a cone shape.

15. The medical delivery system of claim 14, wherein the sheathing assist element is configured to be a filter.

16. A medical delivery system, comprising:

a delivery catheter having a proximal end and a distal end;

a sheathing assist element having a proximal end and a flared distal end, wherein the sheathing assist element is disposed at the distal end of the delivery catheter;

at least two attachment elements coupled to the distal end of the delivery catheter, wherein the at least two attachment elements are disposed within the sheathing assist element;

a replacement heart valve having a first configuration and a second configuration; and

wherein the at least two attachment elements are coupled to a proximal end of the replacement heart valve.

17. The medical delivery system of claim 16, wherein the distal end of the sheathing assist element has a diameter larger than the diameter of the proximal end of the replacement heart valve in the first configuration.

18. The medical delivery system of claim 16, wherein at least a portion of the replacement heart valve is disposed within at least a portion of the sheathing assist element.

19. The medical delivery system of claim 16, wherein the first configuration is a collapsed configuration and the second configuration is an expanded configuration.

20. The medical delivery system of claim 19, wherein distal movement of the sheathing assist element relative to the proximal end of the replacement heart valve allows the sheathing assist element to engage the replacement heart valve, thereby applying a radially inward force to the proximal end of the replacement heart valve assisting in the collapse of the proximal end of the replacement heart valve.

21. The medical delivery system of claim 16, wherein the sheathing assist element is a polymer.