Endoscope probe fixator, obturator assembly with endoscope probe fixator and puncture outfit with endoscope probe fixator

The invention relates to an endoscope probe fixator which comprises a knob (11) with a first through hole (114) and a base (12) with a second through hole (124), and the knob is clamped on an elastic split section (121) of the base through the first through hole and a fixing boss (111) on the inner wall of the first through hole. A second through hole which allows the endoscope probe to pass through and is variable in size is formed in the center of each elastic split section, and by rotating the rotating knob, the fixing bosses drive fixing ribs (1211) with the thickness gradually increased on the outer wall faces of the elastic split sections, so that the size of the second through holes can be changed, and clamping or loosening of the endoscope probe is achieved. The invention further provides an obturator assembly with the endoscope probe fixator and a puncture outfit. The rotating knob and the base with the adjustable inner diameter are adopted, so that the endoscope probe can be stably fixed to the obtu