DEVICES FOR CLOSING A PATENT FORAMEN OVALE

摘要

A patent foramen ovale closure device and method are provided. The device (200, 300) is deployed at the foramen ovale (402) to secure the septum primum (444) and septum secundum (442) together, thus sealing the foramen ovale. In one embodiment, the closure device is a coil that is delivered through the septum secundum and septum primum in an axially elongated state using a tissue piercing structure (554). After being delivered, the coil is released, causing the coil to axially shorten to pinch the septum primum and septum secundum together. In other embodiments, a countertraction element (900, 1000, 1100, 1200) is provided to hold the patent foramen ovale together while the device is being deployed, to ensure adequate positioning of the closure device. The countertraction element may be a balloon, guidewire or any other suitable device used to hold the position of the patent foramen ovale.