Delivery systems and methods for PFO closure device with two anchors

• US 8,568,447 B2
• Filed: 10/15/2012
• Issued: 10/29/2013
• Est. Priority Date: 05/06/2004
• Status: Expired due to Fees

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: WL Gore and Associates Incorporated (W.L. Gore and Associates)
• Inventors: Chanduszko, Andrzej J.
• Primary Examiner(s): Dornbusch, Dianne
• Application Number:
  US13/651,643
• Publication Number:
  US 20130072965A1
• Time in Patent Office: 379 Days
• Field of Search: 606/108, 606/139, 606/151, 606/213, 606/215, 606/216, 623/1.36, 623/23.72, 623/23.76
• US Class Current: 606/213
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00862 elastic or resilient for sutures A61B2017/0618
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014

Abstract

A device closes septal openings, such as a patent foramen ovale (PFO). The device includes two anchors and a flexible connector. Tension applied to one or more strings attached to the device causes the device to collapse into a reduced profile form for withdrawal into a delivery catheter, thereby facilitating retrieval of the device after insertion into a septal opening.

Claims

1. A septal occluder comprising:

a proximal anchor member for deployment proximate a first side of a septal defect, the proximal anchor having a substantially cylindrical shape, a radial passage extending along a diameter of the proximal anchor, and an axial passage extending along a longitudinal axis of the proximal member;

a distal anchor member for deployment proximate a second side of the septal defect;

a flexible connector connecting the proximal and distal anchor members; and

a removal string for retrieving the device from its intended delivery location, wherein the removal string is connected through the radial passage to a ball stop and connected via the axial passage to the distal member.

2. The occluder of claim 1, wherein the distal anchor member has a substantially cylindrical shape and a longitudinal axis.

3. The occluder of claim 2, wherein a tension applied to the removal string causes the ball stop to pass through the radial passage, thereby permitting the string tension to be transmitted through the axial passage to the distal member, thereby reducing a distance between the proximal and distal anchor members and aligning the longitudinal axes of the proximal and distal anchor members.

4. The occluder of claim 1, wherein a tension applied to the removal string causes the ball stop to pass through the radial passage, thereby causing the occluder to collapse into a form suitable for withdrawal into a delivery sheath.

5. The occluder of claim 1, wherein the distal anchor member has a substantially cylindrical shape and has an axial passage.

6. The occluder of claim 5, wherein each end of the removal string is used for controlling the device.

7. The occluder of claim 5, wherein the removal string is slidingly mounted in the proximal anchor and in the distal anchor.