Patent ID: 8685051

Claim:
A cutting device comprising: a handle; a shaft extending from the handle, the shaft rotatably supporting a cutting blade; an actuator operatively connected to rotate the cutting blade, the actuator including an actuator pulley mounted in a proximal portion of the shaft, a first blade pulley mounted in the proximal portion of the shaft and operatively connected for rotation with the actuator pulley, and a second blade pulley mounted in a distal portion of the shaft, wherein the distal portion of the shaft has a smaller cross-sectional area than that of the proximal portion of the shaft and wherein the distal portion of the shaft is configured and dimensioned for insertion into the anterior chamber of the eye, and wherein the cutting blade is a capsulotomy blade rotatably mounted at the distal end of the shaft operatively connected for rotation with the second blade pulley; and a knob mounted operatively connected to the handle, wherein the knob is operatively connected to the actuator pulley so that rotation of the knob rotates the capsulotomy blade, and wherein the knob is operatively connected to the capsulotomy blade by a first elastomeric ring connecting a knob pulley operatively connected for rotation with the knob to the actuator pulley, and by a second elastomeric ring connecting the first blade pulley to the second blade pulley, wherein the cross-sectional area of the second elastomeric ring is smaller than that of the first elastomeric ring.