US 2003/0208232 A1 · PFO closure devices and related methods of use

Abstract

Devices and methods for sealing a passageway formed by a patent foramen ovale (PFO track) in the heart are provided. One method includes providing an abrading device to the PFO track and abrading the tissue within the PFO track. The abraded tissue forming the PFO track is then held together under pressure, either via lowering right atrial pressure or via applying suction to the septum primum to pull it into apposition against the septum secundum. After a sufficient period of time, the pressure is released and the abraded tissue heals to form a robust seal over the PFO track. Additionally, several devices are provided which can be placed into the PFO track to apply adhesive to the walls of the PFO track. The devices may or may not be left within the PFO track. If the devices are not left within the PFO track, the walls of the PFO track, covered with adhesive, are brought into apposition with one another and adhered together. If the device is left within the PFO track, the device is flattened from an expanded configuration to a flattened configuration, and the walls of the PFO track, adhering to the outer surface of the device, are pulled toward each other as the device flattens. The device may also include interior structure to hold the device in a flattened configuration.

Claims98

Dependent claims

A method of sealing a passageway in a heart, comprising:

advancing an abrasion device into the passageway to be sealed;
abrading at least a portion of the tissue surfaces forming the passageway;
withdrawing the abrasion device from the passageway;
and
forcing abraded portions of the tissue surfaces of the passageway against one another for a period of time.

2 more elements

Dependencies are inferred from the claim text.

PFO closure devices and related methods of use

Life of this patent

PFO closure devices and related methods of use

Life of this patent

Abstract

Claims98