Puncture instrument for positioning center of oval foramen of cranial base

The invention provides a puncture instrument device for positioning the center of an oval foramen of a cranial base. The puncture instrument comprises a main frame, a sliding block, sliding block threaded holes, a sliding groove, fixing bolts, an adjustable fixing rod, an angle gauge, a fixing threaded ring, a measurement rod, a protractor, a protractor inserting groove and a head support. The puncture instrument for positioning the center of the oval foramen of the cranial base is made of high-quality acrylic materials, has remarkable advantages, can be used in a CT scanner, and does not affect diagnosis or treatment; meanwhile, a target spot can be clearly positioned through the measurement rod and the angle gauge, so that an objective and digital basis is provided for the positioning process, puncturing blindness is avoided, puncturing precision is improved, and the treatment success rate is increased, and the occurrence rate of complications is reduced; the puncture instrument is simple in structure, conv