Heat & Moisture Exchanger Filter

Heat and Moisture Exchangers (HMEs) use the patient’s own humidity and moisture from exhalation, in order to humidify anesthetic gases during inhalation. As soon as a patient is intubated, the upper airway is bypassed, which leads in a loss of humidification of inhaled air. Dry air can have harmful effects for the patient, therefore to prevent causing trauma to the patient, the hygroscopic HME can be used to play the role of acting as the humidifier in lieu of the respiratory upper airway.

HSI Medical’s HMEF (artificial nose) are equipped with an electrostatic filter as a medium constructed of permanently bipolar charged rectangular split fibers, which are able to capture airborne particles. The nature of this fiber material provides good strength and guarantees a long service life without significant degradation. This type of filter is recommended for applications where high efficiency and low pressure drop is required for mechanically ventilated patients. It offers excellent efficiency for anesthesia breathing filters and pulmonary function filters.

HSI Medical’s HMEF device is a high quality, yet affordable solution for customers. This product line is widely used where reliability and functionality in a highly competitive marketplace are required. We also offer hydrophobic HEPA filters, tubes, connectors and circuits (request more information if interested).

HMEF sizes and specifications

  • Adult Large
  • Adult
  • Adult Compact
  • Pediatric
  • Infant
  • Newborn
HMEF Adult Large

Tidal volume range: 300-1500ml
Filtration Efficiency (Bacterial/Viral): 99.999%+/99.99%+
Moisture output (VT 1000ml): 30.8 mgH2O/L
Temperature Output (VT 1000ml): 31oC
Pressure Drop (60l/min): < 1.0 kPa/cmH2O
Dead space: 90ml
Weight: 45g

HMEF Adult

Tidal volume range: 250-1500ml
Filtration Efficiency (Bacterial/Viral): 99.999%+/99.99%+
Moisture output (VT 1000ml): > 30.8 mgH2O/L
Temperature Output (VT 1000ml): > 32oC
Pressure Drop (60l/min): < 3.5 kPa/cmH2O
Dead space: 45ml
Weight: 33g

HMEF Adult-Compact

Tidal volume range: 100-1000ml
Filtration Efficiency (Bacterial/Viral): 99.999%+/99.9%+
Moisture output (VT 500ml): > 30 mgH2O/L
Temperature Output (VT 500ml): > 28oC
Pressure Drop (30l/min): < 2.5 kPa/cmH2O
Dead space: 32ml
Weight: 24g

HMEF Pediatric

Tidal volume range: 70-250ml
Filtration Efficiency (Bacterial/Viral): 99.999%+/99.9%+
Moisture output (VT 250ml): > 30 mgH2O/L
Temperature Output (VT 250ml): > 29oC
Pressure Drop (20l/min) < 1.6 kPa/cmH2O
Dead space: 12ml
Weight: 12g

HMEF Infant

Tidal volume range: 30-100ml
Filtration Efficiency (Bacterial/Viral): 99.999%+/99.9%+
Moisture output (VT 50ml): > 30 mgH2O/L
Temperature Output: (VT 50ml) > 30oC
Pressure Drop (5l/min): < 0.7 kPa/cmH2O
Dead space: 10ml
Weight: 10g

HME Newborn

Tidal volume range: 15-50ml
Moisture output (VT 30ml): > 20 mgH2O/L
Temperature Output (VT 30ml): > 29oC
Pressure Drop (5l/min): < 0.6 kPa/cmH2O
Dead space: 2.4ml
Weight: 4g

HSI Medical

HSI Medical is a leading provider of affordable, high quality medical devices to our partners for doctors, clinics, hospitals and healthcare agencies worldwide.


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