| 摘要 |
<p>This invention is a device and method for closing a patent foramen ovale comprising a catheter sheath (11) with proximal, and distal ends. A balloon catheter (16) is deploying retained within the catheter sheath. The fluid in the balloon can be heated using radio frequency (RF) energy via two electrodes (41, 42) contained within the balloon's lumen. The catheter is placed across a patent foramen ovale. The balloon catheter is advanced such that the balloon is deployed outside of the distal end of the catheter sheath. The catheter sheath is then removed from the foramen ovale, and the balloon is inflated within the foramen ovale. RF energy is then applied to the fluid in the balloon to heat the balloon to a temperature that causes thermal trauma to the lining of the foramen ovale. The balloon catheter is then deflated, repositioned into the distal end of the catheter sheath, and then removed from the patient.</p> |
