The utility model relates to medical instrument
processing technical field, concretely relates to a three cavity
pipe positioning pin hole clamp, include: positioning subassembly, three cavity
pipe, two
cutting knife device and fixed base, wherein, positioning subassembly includes: positioning
pipe, two positioning steel wires and clamping
assembly, wherein, positioning pipe fixedly set up on fixed base, positioning pipe has the closed limiting end and open
insertion end, three cavity pipe is placed in the cavity of positioning pipe through
insertion end, and clamping
assembly fixedly sets up on the wall surface of
insertion end, the side wall of positioning pipe is successively provided with limiting observation port, inflation incision and
liquid injection incision from limiting end to insertion end, two
cutting knife devices are arranged at corresponding inflation incision and corresponding
liquid injection incision respectively, the utility model solves the problem that traditional manual pin hole efficiency is low, and the risk is high, and the quality and production efficiency of three cavity pipe
trepanning are improved greatly.