Patent ID: 8920418
Filing Date: 2014-12-30
Classification: A61B

Abstract:
1. A PFO closing device comprising: a clamper including a stick portion provided at a distal portion of a catheter for sticking a foramen ovale valve and a sandwich member for sandwiching, in cooperation with the stick portion, biological tissue composed of the foramen ovale valve and an atrial septum secundum of a living body, the stick portion including a plurality of needle members, the catheter including a plurality of lumens; a cautery device including at least one electrode portion to be inserted into the foramen ovale between the foramen ovale valve and the atrial septum secundum; the at least one electrode being movable relative to the stick portion in a forward direction to position the at least one electrode between the foramen ovale valve and the atrial septum secundum; the stick portion or the sandwich member constituting a pole that is a return electrode for the electrode portion; and an electric energy supply unit for supplying electric energy to the electrode portion; wherein the electrode portion is inserted into the foramen ovale and at the same time, the foramen ovale valve and the atrial septum secundum are sandwiched by the clamper, electric energy is supplied from the electric energy supply unit to the electrode portion and the foramen ovale valve and the atrial septum secundum are mutually fused; each of the needle members being movably positioned in a respective one of the lumens of the catheter to permit the needle member to protrude distally from the distal portion of the catheter; and the needle members diverge away from one another in a widening manner in a direction in which the needle members protrude distally from the distal portion of the catheter.