Patent ID: 8597294
Filing Date: 2013-12-03
Classification: A61B

Abstract:
1. A biological tissue closing device comprising: a catheter; two needles movably positioned in a distal portion of the catheter to puncture biological tissue when the two needles project distally outside the catheter; the two needles each possessing a sharply pointed distal end, the two needles extending in a distal direction away from the catheter, the two needles diverging away from one another toward the distal ends of the two needles so that the sharply pointed distal ends of the two needles are spaced farther apart than portions of the two needles proximal of the sharply pointed distal ends; a sandwich member movably positioned in the distal portion of the catheter and cooperable with the two needles, when the sandwich member and the two needles project distally outside the catheter, to sandwich the biological tissue; each of the two needles being curved or bent in a direction away from the sandwich member; a first elongated operation member connected to the two needles to move the two needles relative to the catheter; a second elongated operation member operable independent of the first elongated operation member and connected to the sandwich member to move the sandwich member relative to the catheter; an electric energy supply unit electrically connectable to at least one of the two needles and the sandwich member to supply electric energy to both the at least one needle and the sandwich member; the sandwich member and the two needles cooperating with one another, while the biological tissue is punctured by the at least one needle, to clamp the biological tissue and fuse together the biological tissue by supplying electric energy from the electric energy supply unit to the sandwich member and the at least one needle.