Abstract: An endoscope connection mechanism includes a connection pipe sleeve including a hole having an axis, and a first optical shutter movable between a first state and a second state. The first optical shutter includes a first, a second and a third portions. The first portion includes a first end fixed to a base portion of the first optical shutter, and a second end provided distally relative to the first end. The second portion includes a third end connecting to the second end, and a fourth end provided distally relative to the third end. The third portion includes a fifth end connecting to the fourth end, and a sixth end provided distally relative to the fifth end. In the first state, the third portion is positioned to intersect the axis of the hole, and in the second state, the third portion is positioned not to intersect the axis of the hole.

Abstract: A device for correcting spinal deformities by attachment to portions of the spine of a patient has an elongated rod with a smooth outer peripheral surface, hook members each of which is formed with a hook-like engagement member on one end and a retaining portion through which the elongated rod is loosely inserted, and wedge-like members each in the form of a cylinder with a slit which is provided with a flange on one end. After the elongated rod is loosely inserted into the retaining portions of said hook members with a predetermined play, the wedge-like members mounted on the elongated rod are forcibly inserted into interstices formed between the loosely fitted rod and hook members, to thereby firmly fix the hook members with the elongated rod.