Medical devices and delivery systems for delivering medical devices

• US 8,617,236 B2
• Filed: 11/02/2011
• Issued: 12/31/2013
• 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:
  US13/287,420
• Publication Number:
  US 20120046740A1
• Time in Patent Office: 790 Days
• Field of Search: 623/1.11, 623/2.11, 623/1.24, 623/1.26, 623/1.23, 623/2.18, 606191-201
• 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:

an implantable medical device comprising;

an expandable anchor configured to be implantable within a patient;

a post engaged to the anchor; and

a delivery system comprising;

a housing disposed external to the patient, the housing comprising an actuator;

an actuation element reversibly coupled to a post;

a sheath that covers at least a portion of the implantable medical device;

a first gear and a second gear, wherein the actuator turns both the first gear and the second gear;

a first carriage coupled to the first gear and engaged to the actuation element; and

a second carriage coupled to the second gear and engaged to the sheath,

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

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

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

2. The medical device system of claim 1, wherein the delivery system further comprises:

a first lead screw that couples the first carriage to the first gear; and

a second lead screw that couples the second carriage to the second gear,

wherein the first gear is geared to the first lead screw, and

wherein the second gear is geared to the second lead screw.

3. The medical device system of claim 2, wherein the first lead screw has a first pitch and the second lead screw has a second pitch, the first pitch being different from the second pitch.

4. The medical device system of claim 2, wherein the delivery system further comprises:

a first spring engaged to the first lead screw; and

a second spring engaged to the second lead screw,

wherein turning the first gear uncompresses the first spring and moves the first carriage, and

wherein turning the second gear compresses the second spring and moves the second carriage.