Medical devices and delivery systems for delivering medical devices

• US 8,328,868 B2
• Filed: 10/13/2009
• Issued: 12/11/2012
• Est. Priority Date: 11/05/2004
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Sadra Medical, Inc. (Boston Scientific Corporation)
• Inventors: Paul, David, Sutton, Benjamin, McCollum, Brian, Brandt, Brian D., Leung, Emma, Martin, Kenneth M., Salahieh, Amr, Hildebrand, Daniel
• Primary Examiner(s): Stewart, Alvin J
• Application Number:
  US12/578,463
• Publication Number:
  US 20100121434A1
• Time in Patent Office: 1,155 Days
• Field of Search: 623 211- 218, 623/1.15, 623/1.24, 623/1.26, 623 111- 113, 606191-195, 606/198, 606/200
• US Class Current: 623/2.11
• 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 2/243 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 device system comprising:

a delivery system comprising a delivery sheath, a first actuation element, and a second actuation element;

an expandable medical device adapted to be percutaneously delivered to a target location in a patient through the sheath in an unlocked delivery configuration,

wherein the medical device comprises an expandable portion, a first locking member and a second locking member, and the first locking member and second locking member engage in a locked configuration to maintain the medical device in a locked deployed configuration,

wherein the first actuation element is reversibly coupled to the first locking member and second actuation element is reversibly coupled to the second locking member when the medical device is in the collapsed delivery configuration.

2. The system of claim 1 wherein the first locking member is disposed distal to the second locking member when the medical device is in the unlocked delivery configuration.

3. The system of claim 1 wherein the first and second actuation elements are adapted to apply axially directed forces on the first and second locking elements to move the first locking element closer to the second locking element to lock the first and second locking elements together.

4. The system of claim 1 further comprising a delivery catheter adapted to be within the sheath and movable relative to the sheath, wherein the first actuation element is coupled to a distal portion of the catheter.

5. The system of claim 4 wherein the first actuation element is adapted to radially expand when deployed from the delivery sheath.

6. The system of claim 1 wherein there are a plurality of first actuation elements and a plurality of second actuation elements, and wherein there are a plurality of first locking members and a plurality of second locking members.

7. The system of claim 6 wherein each of the first actuation members is associated with one of the first locking members, and wherein each of the second actuation elements is associated with one of the second locking members, and wherein each of the first locking members is adapted to lock with one of the second locking members.

8. The system of claim 1 further comprising a first release actuation member which maintains the reversible coupling of the first actuation element and the first locking member.

9. The system of claim 8 further comprising a second release actuation member which maintains the coupling between the second actuation element and the second locking member.

10. The system of claim 1 wherein the first actuation element is reversibly coupled to the first locking member and second actuation element is reversibly coupled to the second locking member when the medical device is in an expanded and unlocked configuration.

11. A medical device system comprising:

a delivery system comprising a housing disposed external to a subject, the housing comprising an actuator,

wherein the delivery system is configured and arranged such that the actuator is adapted to move a first delivery system component independently of a second delivery system component,

wherein the delivery system is further configured and arranged such that the actuator is adapted to move the first delivery system component and the second delivery system component at the same time, and

wherein rotation of the actuator translates rotational movement into linear movement.

12. The medical device system of claim 11 wherein the actuator is a single actuation element and wherein the delivery system and actuator are configured such that the actuator is adapted to be moved in a singular type of motion to move the first delivery system component independently of the second delivery system component and move the second delivery system component and the second delivery system component at the same time.

13. The medical device system of claim 11 wherein the actuator is configured to move the first delivery system component and the second delivery system component in a particular sequence.

14. The medical device system of claim 11 wherein the housing further comprises a second actuator which is configured to uncouple the second delivery system component from a medical device.

15. The medical device system of claim 14 wherein the housing further comprises an access door, the movement of which allows access to the second actuator.