Skip to main content

Table 1 Test results of 10 filter designs from leak tests performed on a Perseus A500 anesthesia machine (Drager, Lubeck, Germany)

From: Development and validation of a 3D printed antiviral ventilator filter - a comparative study

Device

Circuit leak

(ml/min)

Circuit Compliance

(ml/cmH2O)

Peak inspiratory pressure

(cmH2O)

Adequate dye test

Commercial HME

10

1.3

19

NA

Commercial HME, sediment filter cartridge

10

1.4

23

NA

Commercial HME, 1.5 μm filter paper

44

1.5

19

NA

Commercial HME, 5 mm sponge

43

1.4

21

NA

Commercial HME, 2 mm Sponge

80

1.5

20

NA

3D printed HME, Sediment filter cartridge, 5 mm sponge

69

1.4

20

Yes

3D printed HME, Sediment filter cartridge, 2 mm sponge

70

1.4

19

Yes

3D printed HME, 1.5 μm filter paper, 5 mm sponge

15

1.4

27

Yes

3D printed HME, 1.5 μm filter paper, 2 mm sponge

35

1.5

22

Yes

3D printed viral filter, sediment filter cartridge

67

1.4

20

Yes

3D printed viral filter, 1.5 μm filter paper

29

1.4

23

Yes

  1. Leak compliance and peak pressure tests were conducted 3 times, and the wort result is reported, 3D three-dimensional, HME heat and moisture exchanger, NA not applicable