Valve assembly, expiratory

Alternative names
Valve assembly, exhalation
Type of medical device or related product
General vs. specific use (health condition)
Intended population age
Intended population sex
Level of technical knowledge
Capital
Reusable
Requirements
None
WHO list of priority medical devices
EMDN related code(s)
Z12159080
VAROUS PNEUMOLOGY AND RESPIRATORY PHYSIOPATHOLOGY INSTRUMENTS - HARDWARE ACCESSORIES
GMDN related code(s)
37819
Mechanical expiratory valve, reusable (A non-sterile mechanical device intended to be used in a respiratory or anaesthesia breathing circuit to maintain a degree of positive pressure in a patient's airway at the end of expiration. Typically constructed of plastic/metal it has a valve that is actuated by a spring to provide expiratory airway resistance, and an adjustable knob (usually not graduated) that is typically set between 0 and 20 cmH20 pressure, but may be fully closed when controlled/assisted ventilation is applied. It is normally used with anaesthesia breathing systems, pulmonary resuscitators, or ventilators and is commonly known as a pop-off valve, relief valve, or spill valve. This is a reusable device.)