PEEP valve (experimental)

thingiverse

PEEP = Positive End-expiratory Pressure Valve This highly configurable PEEP valve design is specifically tailored for 22mm tube systems, utilizing either a spring or rubber band to maintain the opening pressure level. PEEP valves are utilized in ventilation systems to maintain approximately 20cmH2O pressure within the hood. The initial concept for this design emerged from a Facebook discussion centered on using 3D printing techniques to create non-invasive ventilation systems, increasing capacity during the COVID19 pandemic when commercial valves were scarce. The original idea to employ a ping-pong ball as a valve was proposed by James Rink, a surgeon in the UK. This solution builds upon his concept, incorporating standard components such as flat-seal from garden pipe systems, a ping-pong ball, rubber bands, and standard springs. Multiple parameters can be customized within this design, including ball diameter, ball clearance, thread clearance, thread pitch, connecting tube specifications, spring parameters, etc. There are two variants of the design: one includes a seal ring, while the other does not. This model can be printed without support structures. The design was rapidly tested on an anesthetic circuit with positive results.