Patent ID: 8460287

Claim:
A PFO closing device comprising: a catheter having a distal portion, the distal portion of the catheter including first, second, third and fourth separate lumens which are spaced apart from one another; a clamper comprised of a needle portion movably positioned in the first lumen at the distal portion of the catheter for piercing a foramen ovale valve and a sandwich member movably positioned in the second lumen at the distal portion of the catheter, the sandwich member and the needle portion together cooperating with one another to sandwich therebetween biological tissue composed of the foramen ovale valve and an atrial septum secundum; two electrodes movably positioned in respective ones of the third and fourth lumens at the distal portion of the catheter to project distally beyond a distal end of the catheter, the two electrodes being positionable in the foramen ovale between the foramen ovale valve and the atrial septum secundum; an electric energy supply unit connected to the two electrodes to supply electric energy to the two electrodes; and the electrodes being insertable into the foramen ovale while the foramen ovale valve and the atrial septum secundum are at the same time sandwiched by the clamper, whereupon electric energy supplied from the electric energy supply unit to the electrodes effects mutual fusing of the foramen ovale valve and the atrial septum secundum.