Build Rev 2
Manifold assemblyNote: Some of the photos in this section are from the prototype and are included here for visual reference only.
Rev2 notes: To prevent the air pump from “deadhead” conditions (i.e. not displacing the air out of its compression chamber, which overheats it and shortens its life), we have added a Bypass line to the Rev2 units. This allows different I:E respiratory rhythms to be run on each patient manifold that could potentially have all three manifolds closed down during part of the cycle. If this occurs, the Bypass line will allow air flow produced by the pump to escape. If operating in CPAP mode on any manifold (i.e. no zero flow state), bypass air can be eliminated by fully closing its ball valve. However, it may be advisable to use bypass air in all manifold modes (including CPAP) so that the FiO2 can be regulated within a broader range. Finally, it is essential that pressure relief valves adjusted to 45cm H2O be added to each patient ventilator port. Some physicians may want lower settings on some or all patient ports to avoid barotrauma. Learn how to adjust them here.
Overview of the manifold
Fittings and pressure gage
Brass fittings for pressure relief valves
Label each ventilator port
Adding pressure relief valves
Male x CSST and vent hose cuffs
Gas fitting for ventilator hose attachment port
Four vent setup
Bypass line; note Spartan solenoids in background
Leon and Danny building manifolds
Bypass line. Added to allow individual manifolds to improve FiO2 range and avoid deadheading the pump.
Green manifold
Red manifold
Yellow manifold
Nearly completed unit with 3 manifolds and_O2 line shown
Overview of Manifold Assembly (Rev 2)
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