(1) Corresponding to the position of the oral cavity on the outside of the oxygen mask, there is a hollowed hole to facilitate the installation of the button. This setting can be used to connect the empty needle with a spray button to directly give moisture according to the position of the patient＇s mouth. 
(2) There are several small holes in the stopper of the inlet cavity inside the oxygen mask, which is helpful for the water to be evenly distributed in the mouth of the case, so as to reduce the drying of the oral mucosa. 
(3) The cork outside the oxygen mask has an opening that can be connected to the T-shaped connecting tube. It can be directly connected to the empty needle to spray water in a "push" way, simple operation and convenient use. 
(4) Buttons and empty needles can be disassembled, it is very easy to use and store.

The improved design of the oxygen mask reduces the drying of the oral mucosa caused by the use of oxygen therapy. Based on the existing oxygen mask, dig a small hole corresponding to the position of the oral cavity, and insert a bottle stopper inside and outside to form a button that matches each other. Several small holes are poked with a needle on the button surface of the inner side near the oral cavity, which helps the water to spread the oral cavity in a spray shape. The outer button is to dig out an opening that can be connected to the T-line connection pipe, and then it can be connected to the empty needle and sprayed by "pushing".

Direct use of the spray buckle can be connected to the empty needle to push the water to the patient＇s mouth. Not only does the spray buckle need not be taken down repeatedly, but also different from the previous use of wet cotton sticks to moisten the mouth, improve oral mucosa drying to avoid subsequent triggering The problem of broken skin, pain or even infection. The empty needle "push" method of spray buckle design can be easily operated, so that caregivers can use more simple and convenient equipment to provide better care for patients.