Laryngeal mask is a core device for supraglottic airway management and serves as indispensable, standardized equipment in modern anesthesia, emergency medicine, and critical care. Both Gel-like laryngeal masks and standard inflatable silicone laryngeal masks are classified as second-generation supraglottic airway devices (SADs); they are used to establish non-invasive ventilation pathways—serving as alternatives to tracheal intubation—during general anesthesia, pre-hospital emergency care, and cardiopulmonary resuscitation.

Gel-like laryngeal mask is a supraglottic airway management device designed to replace tracheal intubation and traditional inflatable silicone laryngeal masks; it is used to establish a secure airway during anesthesia, emergency care, and resuscitation.

Negative pressure drainage bag—also known as a negative-pressure drainage bulb or a disposable negative-pressure drainage device—is a Class II sterile, disposable medical consumable. It is a closed drainage system that generates internal negative-pressure suction through the manual squeezing of the bulb to actively evacuate blood, exudate, and pus from a wound, distinguishing it from standard drainage bags that rely on gravity flow.

Negative Pressure drainage bag is an essential, standardized consumable in surgical procedures and a core tool in modern wound care. It not only replaces traditional gravity drainage to become the mainstream drainage method but also significantly reduces the nursing workload, enables quantitative monitoring, enhances patient comfort, and facilitates rapid recovery.