Ventilator mask and joint thereof

A ventilator mask, comprising:

• a ventilator mask body;
• a joint, including:
• a joint body, having a T shape, the joint body including a first end portion, a second end portion, and a third end portion that communicate with each other, the first end portion being configured to be movably connected to the ventilator mask body, the third end portion being configured to communicate with an oxygen source, an opening being disposed between the first end portion and the second end portion;
• an upper cover, pivotally connected to the joint body for closing or opening the opening;
• and
• a perforated cover, disposed on the second end portion, the perforated cover having a through hole configured for insertion of a first tube;
• wherein the second end portion and the first end portion define ends of a first insertion path through the joint body configured for insertion of the first tube therethrough, and the opening and the first end portion define ends of a second insertion path through the joint body configured for insertion of a second tube therethrough alongside the first tube, and
• wherein a valve plate is provided at a junction of the first end portion, the second end portion, and the third end portion, one end of the valve plate is fixed, the valve plate is made of an elastic material and is elastically deformable, the valve plate is configured to close the junction of the first end portion, the second end portion and the third end portion, and oxygen supplied from the oxygen source pushes the valve plate open in only one direction to enter the first end portion and the second end portion.