Oxygen catheter fixing device for surgical basic nursing

The invention provides an oxygen catheter fixing device for surgical basic nursing, and relates to the technical field of oxygen catheter fixing.The oxygen catheter fixing device comprises a fixing sleeve, a limiting sleeve is slidably connected to the inner circumferential face of the fixing sleeve in an inserted mode, and the top end and the bottom end of the outer circumferential face of the limiting sleeve are each provided with two cylindrical protrusions in an annular array shape; threaded through holes communicated with the inner circumferential face of the limiting sleeve are formed in the axis position of the cylindrical protrusion, a set of locking bolts are installed in the four threaded through holes in a threaded mode, when the oxygen catheter is pulled, the insulating inserting piece is separated from the conductive block A and the button battery, and at the moment, the copper piece is in contact with the conductive block A and the button battery. When the oxygen catheter is pulled, the buzzer i