DAR™
FILTER HMEs
Better Humidification, Better Protection
Nellcor™
Puritan Bennett™
BIS™
Mallinckrodt™
DAR™
Shiley™
HMEs, or Heat and Moisture Exchangers, capture heat and water
vapor from a patient’s exhaled air. Then during inhalation, they add
heat and moisture to the inspired air, providing the appropriate
humidification.
Independent published studies have shown Covidien DAR™ filter-
MEASURED ABSOLUTE HUMIDITY INDEPENDENT PUBLISHED TESTING
Electrostatic Filter
Mechanical Filter
HME, Large
HME, Large
Electrostatic Filter
HME, Small
35.0
HMEs to be among the best HMEs in terms of moisture output.1,2
A recently published study by Lellouche et al showed that out of 48
other filters and HMEs tested, three DAR Filter HMEs ranked in
the top 10 for performance.1
<30 mg H2o/L
30.0
25.0
20.0
15.0
10.0
Electrostatic Filter
HME, Large
Electrostatic Filter
HME, Small
Electrostatic
Filter HME, Small,
ANgled Port
Mechanical Filter
HME, Large
Mechanical Filter
HME, Small
Pediatric
Electrostatic Filter
HME, Small
5.0
0.0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Product ranking by measured absolute humidity output
Source: Lellouche et al1
Infant-Pediatric
Electrostatic Filter
HME, Small
Electrostatic Filter HMEs
Large
Catalog Number
352U5805
Quantity/Box
50
Recommended Tidal 300-1500 mL
Volume
Moisture Output
Vt 250 mL
33.9 mg H2O/L3
Vt 500 mL
33.3 mg H2O/L4
Vt 1000 mL
32.4 mg H2O/L3
Moisture Loss*
6 mg H2O/L at Vt 500 mL
Resistance to Flow at (ISO 9360)
30 L/min
0.9 cm H2O
60 L/min
2.1 cm H2O
90 L/min
3.6 cm H2O
Filtration Efficiency
>99.999%
Bacterial
Viral
99.999%
NaCl9
>99.623%
Internal Volume
90 mL
Weight (approx.)
50 g
Type of Filtration
Electrostatic
Small
352U5877
50
150-1200 mL
Small, Angled Port
352U5996
50
150-1200 mL
34.4 mg H2O/L5
33.6 mg H2O/L4
32.9 mg H2O/L5
6 mg H2O/L at Vt 500 mL10
34.4 mg H2O/L5
33.6 mg H2O/L4
32.9 mg H2O/L5
6 mg H2O/L at Vt 500 mL
1.0 cm H2O
2.8 cm H2O
4.7 cm H2O
1.2 cm H2O
2.9 cm H2O
5.2 cm H2O
>99.99%
>99.99%
>97.416%
51 mL
28 g
Electrostatic
>99.99%
>99.99%
>97.416%
61 mL
29 g
Electrostatic
Mechanical Filter HMEs
*Internal testing Mirandola (various 2005-2008).
References
1. Lellouche F, Taillé S, Lefrançois F, et al. Humidification
performance of 48 passive airway humidifiers: comparison with
manufacturer data. Chest. 2009;135(2):276-286.
2. Lucato JJ, Adams AB, Souza R, Torquato JA, Carvalho CR,
Marini JJ. Evaluating humidity recovery efficiency of currently
available heat and moisture exchangers: a respiratory system
model study. Clinics (Sao Paulo). 2009;64(6):585-590.
3. Wilkes, A. Technical Evaluation Report no. 930001. Laboratory
evaluation of the performance of the DAR Hygrobac. Cardiff,
UK. 1993.
4. MHRA. Evaluation no. 04005 - Breathing system filters, an
assessment of 104 breathing system filters. March 2004.
5. MDA Evaluation No. 189. 1993.
6. MDA Evaluation No. 142. 1992.
7. Medical Device Evaluation Unit, Cardiff Univ., UK. Test report
on Hygroster mini. Report no. 050102. Jul. 2005.
8. Internal testing, Mirandola, 1993.
9. Nelson Laboratories Inc. Sodium chloride aerosol testing of
breathing system filters (BSF). Lab.No. 399951A.1 Amended.
January 2008.
10.TIM, Technologie-Institut Medizin GmbH - Universitätsklinikum
Göttingen, Germany. HME-Test Report 2008/22 DAR Hygrobac
“S”. July 2008.
11.TIM, Technologie-Institut Medizin GmbH - Universitätsklinikum
Göttingen, Germany. HME-Test. Report 2009/04 DAR
Hygroster. May 2009.
12.TIM, Technologie-Institut Medizin GmbH - Universitätsklinikum
Göttingen, Germany. HME-Test. Report 2009/05 DAR Hygroster
Mini. May 2009.
Large
Small
Pediatric
Catalog Number
354U5876
354U19028
355U5430
Quantity/Box
50
50
50
Recommended Tidal 300-1500 mL
200-1500 mL
75-300 mL
Volume
Moisture Output
Vt 50 mL
------Vt 250 mL
34.7 mg H2O/L6
33.0 mg H2O/L7
32.3 mg H2O/L4
Vt 500 mL
34.1 mg H2O/L4
31.5 mg H2O/L7
--Vt 1000 mL
33.4 mg H2O/L6
29.6 mg H2O/7
--6 mg H2O/L at Vt 500 mL11 6 mg H2O/L at Vt 500 mL12 6 mg H2O/L at Vt 75 mL
Moisture Loss*
Resistance to Flow at (ISO 9360)
5 L/min
----20 L/min
----1.6 cm H2O
1.2 cm H2O
2.6 cm H2O
30 L/min
0.8 cm H2O
60 L/min
2.5 cm H2O
2.7 cm H2O
--90 L/min
4.2 cm H2O
4.6 cm H2O
--Filtration Efficiency:
Bacterial
>99.999999%
>99.999%
99.999%
Viral
>99.999%
>99.999%
>99.99%
NaCl9
>99.764%
>99.992%
>96.263%
Internal Volume
96 mL
66 mL
31 mL
Weight (approx.)
49 g
36 g
21 g
Type of Filtration
Mechanical
Mechanical
Electrostatic
DAR Filter/HMEs have been tested against microbes as small as 0.02 µ.
Infant-Pediatric
355U5427
50
30-100 mL
30 mg H2O/L4
------NA
0.6 cm H2O
--------99.999%
>99.99%
>94.186%
10 mL
9g
Electrostatic
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