Dräger Microfilter 6737545 Used Patient Monitor For Core Technical Functions

Dräger microfilter 6737545 Used Patient Monitor designed for Core Technical Functions

Dräger microfilter 6737545 Used Patient Monitor designed for Core Technical Functions serves as a critical barrier in respiratory protection systems. Its multi-layered composite structure integrates.

PRODUCT PICTURE:

medical-grade hydrophobic polytetrafluoroethylene (PTFE) microporous membrane as the primary filtration medium. This material undergoes an electret treatment process, imparting permanent electrostatic charges to the fiber surfaces. This dual mechanism enables:

Physical interception of particles >0.2 μm (including bacteria, viral droplets, and aerosols) via size exclusion;

Electrostatic adsorption of sub-micron particles (e.g., SARS-CoV-2 virions at 0.1 μm), achieving filtration efficiency ≥99.99% in compliance with ISO 23328-1:2020 standards.

Bidirectional Protection Technology
■ Patient-to-Equipment Protection:
During exhalation, pathogen-laden gases (containing organisms like Mycobacterium tuberculosis or influenza viruses) pass through a gradient density filter architecture:

A pre-filtration layer captures large particulates (>5 μm) such as respiratory secretions.

The PTFE membrane traps microorganisms, preventing contamination of anesthesia machine internals (e.g., flow sensors, gas pathways, vaporizers).
This significantly reduces cross-infection risks in ventilator sharing scenarios.

■ Equipment-to-Patient Protection:
The filter blocks pathogens colonizing ventilator internals (e.g., Pseudomonas aeruginosa) and airborne contaminants (OR particulates, fungal spores) from entering the patient's airway. Clinical studies demonstrate a 41% reduction in Ventilator-Associated Pneumonia (VAP) incidence when using ISO-certified filters.

Advanced Fluid Dynamics Design
Computational Fluid Dynamics (CFD) modeling optimizes airflow pathways to minimize resistance:

Peak flow resistance: ≤2.5 mbar at 300 L/min (35% lower than industry average).

Laminar flow channels maintain stable pressure delivery even during high-frequency oscillation ventilation (HFOV).
This low-resistance profile prevents respiratory muscle fatigue in compromised patients (COPD, ARDS) during prolonged mechanical ventilation.

Material Science Innovations
■ Hydrophobic Stability:
The PTFE membrane maintains structural integrity at 100% relative humidity without pore collapse, ensuring consistent filtration during humidified ventilation.

■ Dead Space Optimization:
Precision-molded polycarbonate housing limits internal volume to <15 ml, minimizing CO₂ rebreathing risk—critical for pediatric/neonatal applications where dead space >2 ml/kg can compromise gas exchange.

■ Chemical Compatibility:
Resists degradation by common disinfectants (ethanol, isopropanol) and anesthetic gases (sevoflurane, desflurane) per ASTM F2100 testing.

Performance Validation

Bacterial Filtration Efficiency (BFE): 99.999% against Staphylococcus aureus (3.0 μm)

Viral Filtration Efficiency (VFE): 99.99% against MS2 bacteriophage (0.025 μm)

Particulate Filtration: Meets EN 14387 P3 level (penetration <0.05%)

Pressure Drop: 1.8 mbar at 60 L/min (per ISO 9360-1:2022)

Clinical Applications

ICU ventilators requiring >72h continuous operation

Transport ventilators exposed to uncontrolled environments

Nebulizer circuits during aerosol-generating procedures (AGPs)

HFOV systems where conventional filters cause pressure oscillations

Regulatory Approvals
CE Marked (MDD 93/42/EEC), FDA 510(k) cleared (K191968), and TGA Australia listed (ARTG 337867).

Environmental Specifications
Operating Temp: -20°C to +50°C
Storage Humidity: <80% RH non-condensing
Shelf Life: 5 years in original packaging