Systems and methods for delivering a medical implant

• US 8,894,703 B2
• Filed: 06/22/2011
• Issued: 11/25/2014
• Est. Priority Date: 12/23/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Sadra Medical, Inc. (Boston Scientific Corporation)
• Inventors: Salahieh, Amr, Valencia, Hans F., Brandt, Brian D., Argento, Claudio, Haug, Ulrich R., Dueri, Jean-Pierre, Hildebrand, Daniel, Morejohn, Dwight P., Saul, Tom
• Primary Examiner(s): STEWART, ALVIN J
• Application Number:
  US13/166,184
• Publication Number:
  US 20110257735A1
• Time in Patent Office: 1,252 Days
• Field of Search: 623/2.1, 623 211- 218, 623 124- 126, 623/1.11, 606/99, 606138-140, 606/151, 606/157, 606/200, 604/8, 600/37
• US Class Current: 623/2.11
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22035 for retrieving or repositioning foreign objects
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• 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 2/2433 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 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61F 2250/001 : for adjusting a diameter

Abstract

The present invention relates to apparatus and methods for endovascularly delivering and releasing a prosthesis, e.g., an aortic prosthesis, within and/or across a patient'"'"'s native heart valve, referred to hereinafter as replacing the patient'"'"'s heart valve. In some embodiments the delivery system comprises a plurality of first actuatable element adapted to engage a plurality of second elements in a first configuration to capture the implant within the delivery system, and wherein the plurality of first actuatable element are adapted to engage the plurality of second elements in a second configuration and to release the implant from the delivery system.

Claims

1. A system comprising:

an implantable medical device comprising an expandable anchor configured to be implantable within a patient;

a post engaged to a proximal end of the anchor, the post having an outer surface and an inner surface, the inner surface defining a first lumen, the post having at least one ratcheting lock element that extends through the outer surface and is in communication with the first lumen; and

an anchor lock element defining a second lumen, the anchor lock element configured to be disposed about a portion of the outer surface of the post, the anchor lock element further having at least one tab, the at least one tab having a first state and a second state, wherein in the first state the at least one tab extends into the second lumen of anchor lock element and the first lumen of the post thereby securing the anchor lock element to the post, and wherein in the second state the at least one tab does not extend into the first lumen of the post.

2. The system of claim 1, further comprising an actuator configured to be advanced through the first lumen and the second lumen, wherein the advancement displaces the at least one tab from the first state to a second state and releases the anchor lock element.

3. The system of claim 2, wherein the actuator comprises a mandrel having a tapered end.

4. The system of claim 1, wherein the implantable medical device is a replacement valve, the system further comprising:

a valve support structure engaged to the post; and

at least one valve leaflet engaged to the valve support structure.

5. The system of claim 1, wherein the at least one tab is positioned along a first axis.

6. The system of claim 1, wherein the at least one ratcheting lock element comprises a plurality of slots.

7. The system of claim 6, wherein the at least one tab is positioned along a second axis substantially perpendicular to the first axis.

8. The system of claim 7, wherein the outer surface of the post defines a groove that extends along a longitudinal length of the post and connects the plurality of slots, and wherein the groove is configured to receive a portion of the at least one tab.

9. The system of claim 1, further comprising at least one attachment element engaged to the post, wherein the at least one attachment element is configured to engage the anchor.

10. The system of claim 1, wherein the anchor lock element comprises an attachment element configured to engage a portion of the anchor.

11. The system of claim 1, wherein the anchor comprises a braided wire.