Detection method for surgical drilling and end effector used therein

A detection method for surgical drilling configured to detect whether a drill bit of a drilling machine will generate an oversized hole or oval-shaped hole on a predetermined drill area during a drilling procedure, the detection method comprising the steps of:

• a first step, moving the drilling machine with an end effector to outside of the predetermined drill area, aligning the drill bit of the drilling machine with the predetermined drill area and positioning a bit end of the drill bit at an initial position, wherein the end effector includes a carrier, a first optic bundle and a second optic bundle, the first and second optic bundles are positioned in the carrier, a first terminal of the first optic bundle is visible from the carrier and configured to project a first light to a first detection point on the predetermined drill area, a first detection light is reflected from the first detection point, and a second terminal of the second optic bundle is visible from the carrier and configured to project a second light to a second detection point on the predetermined drill area, a second detection light is reflected from the second detection point;
• and
• a second step, transmitting the first detection light to a processor through the first optic bundle to obtain a first distance value and transmitting the second detection light to the processor through the second optic bundle to obtain a second distance value, wherein the drilling procedure is allowed to execute while a first difference value between the first and second distance values is within a predetermined tolerance range, and the drilling procedure is not allowed to execute while the first difference value is not within the predetermined tolerance range.