Punching-type iridotomy instrument

A punching-type iridotomy instrument comprising:

• a grip manipulation part configured to be manipulated to be opened or closed by a user while being held by the user's hand;
• an extension shaft extending from the grip manipulation part;
• and
• a punching operating unit extending from the extension shaft and configured to perform an operation of forming a hole in a predetermined site of a peripheral portion of an iris in conjunction with an operation of the grip manipulation part performed by the user's manipulation,
• wherein the grip manipulation part comprises:
• a first round shaft extending from a rear side of the extension shaft and having a first finger grip ring formed at an end of the first round shaft and configured to be fitted with the user's thumb;
• a second round shaft hingedly coupled to a predetermined position on the extension shaft by a pivot pin and having a second finger grip ring formed at an end of the second round shaft and configured to be fitted with the user's ring finger, the second round shaft being configured to implement a rotational operation related to a motion of the ring finger fitted into the second finger grip ring;
• a spring disposed between the first and second round shafts and configured to exert elasticity for pushing the second round shaft;
• and
• a wire configured to connect the second round shaft and the punching operating unit while passing through the extension shaft and operate the punching operating unit in conjunction with a rotational operation of the second round shaft, and
• wherein the punching operating unit comprises:
• upper and lower forks extending from a front side of the extension shaft and divided into two pieces to define a spacing interval for accommodating the iris such that the upper and lower forks are respectively positioned outside the iris and inside the iris;
• a rotary bar hingedly coupled to a tip of the upper fork by a shaft pin and configured to rotate toward the lower fork about the shaft pin by an operation in conjunction with the wire in accordance with a manipulation of the grip manipulation part;
• and
• incision members respectively provided at a tip of the lower fork and a tip of the rotary bar and configured to form a hole in the predetermined site of the iris positioned in the spacing interval in conjunction with a rotation of the rotary bar.