Medical devices and delivery systems for delivering medical devices

• US 10,531,952 B2
• Filed: 01/23/2018
• Issued: 01/14/2020
• 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.
• Primary Examiner(s): Stewart, Alvin J
• Application Number:
  US15/877,623
• Publication Number:
  US 20180214266A1
• Time in Patent Office: 721 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. 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 of the sheathing assist element is coupled to the distal end of the delivery 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 of the sheathing assist element to the proximal end of the sheathing assist element when in the second configuration, the sheathing assist element at its distal end having a transverse extent greater than that of the outer sheath;

wherein the sheathing assist element includes a plurality of arms each forming a looped structure,

wherein the plurality of arms includes a first set of arms and a second set of arms different from the first set of arms.

2. The medical delivery system of claim 1, wherein the first set of arms is longer than the second set of arms.

3. The medical delivery system of claim 1, wherein two arms from the second set of arms are attached together at an attachment point disposed along their length between a proximal end and a distal end of an arm of a replacement heart valve.

4. The medical delivery system of claim 3, wherein at least some of the plurality of arms are weaved into an anchor member of the replacement heart valve.

5. The medical delivery system of claim 4, wherein distal ends of the first set of arms are disposed radially within the anchor member of the replacement heart valve.

6. The medical delivery system of claim 4, wherein distal ends of the second set of arms are disposed outside of the anchor member of the replacement heart valve.

7. The medical delivery system of claim 1, wherein both ends of a wire loop structure of each of the plurality of arms are coupled together at the proximal end of the sheathing assist element.

8. The medical delivery system of claim 1, wherein the sheathing assist element further comprises a plurality of stiffening elements.

9. The medical delivery system of claim 8, wherein the plurality of stiffening elements is shorter than the plurality of arms.

10. The medical delivery system of claim 8, wherein the plurality of stiffening elements each forms a looped structure.