Sputum suctioning is one of common clinical nursing operations as well as an effective way to clear respiratory secretions. In this operation, suction tube plays an essential role. However, how much do you know about it？

Can you really the difference between different types medical masks? Do you really know about all of these masks, like regular medical masks, medical surgical masks, medical protective masks, N95 masks, KN95 masks ...? If you feel confused, this article will take you through these different masks.

Air is the substance on which people depend for survival.With the progress of science and technology and the improvement of living standards, people have higher requirements for air quality, and air filtration has become particularly important.Air filters also play a great role as an important part of air filtration. So, what is a bag air filter and why is it so popular?

A catheter is a Class II medical machine, a tube inserted into the bladder by the urethra in order to drain urine, mainly used for patients with urinary retention or bladder outlet obstruction, urinary incontinence, patients requiring prolonged bed rest or forced position, and patients in the perioperative period of surgical procedures. Catheters are usually divided into 13 models with specifications ranging from 6F to 30F according to the circumference of the outer diameter, and four models of 12F, 14F, 16F and 18F are commonly used for adults.

Do you really know about doctor caps? Doctors caps, as the name implies, are the caps worn by doctors. The regular colors of doctor caps are white, blue and green. The common sizes are 18 inches, 19 inches, 20 inches, 21 inches, etc.