Patent foramen ovale closure device
View Patent ↗A device and method for deploying a mechanical closure device for closing a passageway in a body, for example a patent foramen ovale (PFO) in a heart. The deployment device has a first tubular structure having proximal and distal ends. A second tubular structure is substantially coaxial to and slideably engaged within the first tubular structure. The second tubular structure has a first substantially linear shape when constrained within the first tubular structure, and a second curvilinear shape when telescopically extended from the distal end of the first tubular structure. A third tubular structure is substantially coaxial to and slideably engaged within the second tubular structure. The third tubular structure is configured to provide sufficient rigidity to push the mechanical closure device from the distal end of the second tubular structure, and provide sufficient flexibility to assume a curvilinear shape when deflected by the second tubular structure.
1. A method of deploying a mechanical closure device through the septum of a heart to facilitate closing of a patent foramen ovale comprising:
accessing the right atrium of the heart with a deployment device carrying the mechanical closure device, the mechanical closure device comprising a proximal and distal anchor with a closure line attached there between;
advancing the deployment device distally until the deployment device penetrates through the interatrial septum into the left atrium;
orienting the distal end of the deployment device back towards the interatrial septum;
advancing the deployment device until the distal end of the deployment device penetrates through the interatrial septum into the right atrium;
deploying the distal anchor from the distal end of the deployment device into the right atrium;
retracting the deployment device back from the right atrium to the left atrium, and then from the left atrium to the right atrium, leaving a portion of the closure line between the proximal and distal anchors in the left atrium;
deploying a proximal anchor associated with the mechanical closure device from the distal end of the deployment device into the right atrium.
2. The method of claim 1 wherein accessing the right atrium comprises accessing the right venous system and advancing the deployment device along the peripheral vein, into the region of the vena cavae, and into the right atrium.
3. The method of claim 1 wherein penetrating through the interatrial septum comprises penetrating through the septum primum and septum secundum.
4. The method of claim 1 wherein penetrating through the interatrial septum comprises penetrating through the septum primum.
5. The method of claim 1 wherein penetrating through the interatrial septum comprises penetrating through the septum secundum.
6. The method of claim 1 wherein orienting the distal end of the deployment device back towards the interatrial septum comprises imparting a curvilinear bend along the distal end of the deployment device.
7. The method of claim 1 further comprising uni-axially adjusting the mechanical closure device to bring the septum primum and septum secundum in close proximation.
8. The method of claim 1 further comprises assessing the proximation between the septum primum and septum secundum.