Patent ID: 8585700

Claim:
A medical device comprising: a catheter configured to be positioned in a blood vessel; a sticking member for sticking a biological tissue at a periphery of a defect existing in the biological tissue, the sticking member being movably positioned in the catheter for movement in an advancing and retracting manner; a sandwiching member cooperating with the sticking member to sandwich the biological tissue between the sticking member and the sandwiching member to close the defect, the sandwiching member being movably positioned in the catheter for movement in an advancing and retracting manner; two spaced apart contact members each connected to a conductive wire, connectable to an energy supply source that supplies energy, to supply energy to the contact members; a movable sticking moving-member connected to the sticking member to move the sticking member in the advancing and retracting manner; a movable sandwiching moving-member connected to the sandwiching member to move the sandwiching member in the advancing and retracting manner; a pair of terminals including one terminal and an other terminal, the one terminal connected to one of the sandwiching moving-member and the sticking moving-member so the terminal moves together with the one of the sandwiching moving-member and the sticking moving-member during movement of the one of the sandwiching moving-member and the sticking moving-member, at least one of the pair of terminals not contacting a respective one of the contact members in an initial state; the other terminal connected to the other of the sandwiching moving-member and the sticking moving-member; and the sticking moving-member being movable to move the sticking member to stick the biological tissue and the sandwiching moving-member being movable to move the sandwiching member to a position to cooperate with the sticking member in a sandwiching state in which the biological tissue is sandwiched between the sticking member and the sandwiching member to close the defect, the one terminal moving from the initial state to contact one of the contact members in the sandwiching state and the other terminal contacting the other contact member so that with the conductive wire connected to the energy supply source, energy flows to the sticking member and the sandwiching member only in the sandwiching state to fuse together the biological tissue sandwiched between the sandwiching member and the sticking member.