Tetra PAPRa
The Tetra PAPRa uses a fan to pull air through a filter and push that air to your face. With that, you’re breathing N95 filtered air more easily than you would be through a passive respirator. We’ve worn these things for hours at a time, and they are much more comfortable than a regular mask. Want to build your own? Here are the instructions!
Want to buy one? Get one while supplies last!
Tetra Fitra
The Tetra Fitra is a device intended to be worn over a bifold N95 respirator to provide better protection to the wearer through improving the fit of the device. The study has been published in the Journal of Occupational and Environmental Medicine.
Tetra Ventilator Splitter
With individual airflow control and monitoring, the Tetra Splitter addresses concerns of tidal flow control, respiratory virus spread, and ethical medical choices.
The mechanism features an LCD screen displaying readings for each patient, giving medical professionals more insight and control than analogue splitters used during the first wave of COVID-19. Designed as a last-resort solution, the Tetra Vent Splitter provides doctors with an alternative to denying healthcare due to a resource shortage.