Vibrating Mesh Nebulizer (VMN)
Vibrating Mesh Nebulizer (VMN)
A vibrating mesh nebulizer is an advanced aerosol delivery device that converts liquid medications into fine particles suitable for inhalation therapy in pediatric patients.
Key Features
- Utilizes a precisely engineered mesh containing 1000-7000 laser-drilled holes
- Produces uniform particle size (1-5 micrometers)
- Silent operation
- Portable and battery-operated
- Treatment time: 5-7 minutes
Working Mechanism
Core Components
- Dome-shaped aperture plate/mesh
- Piezoelectric crystal
- Medication reservoir
- Control circuit
Operation Process
- The piezoelectric crystal vibrates at frequencies of 100-120 kHz
- Vibrations force liquid medication through the mesh holes
- Medication breaks into precise aerosol droplets
- Generated aerosol flows directly into the patient's breathing stream
Clinical Applications
Approved Medications
- Bronchodilators
- Inhaled corticosteroids
- Antibiotics
- Mucolytics
- Surfactants
- Proteins and peptides
Primary Indications
- Asthma management
- Cystic fibrosis treatment
- Bronchiolitis
- Respiratory infections
- Bronchiectasis
Usage Guidelines
- Verify medication compatibility
- Check device assembly and cleanliness
- Fill with prescribed medication volume
- Position patient appropriately
- Monitor breathing pattern and coordination
- Clean thoroughly after each use
Benefits & Clinical Considerations
Advantages
- Higher drug delivery efficiency (>90% output)
- Minimal residual volume (<0.1ml)
- Consistent particle size generation
- No medication heating/denaturation
- Quiet operation - better pediatric compliance
- Shorter treatment duration
- Position-independent operation
Clinical Considerations
- Higher initial cost compared to jet nebulizers
- Regular cleaning and maintenance required
- Mesh clogging with certain medications
- Battery dependence
- Specific handling and storage requirements
Troubleshooting
- Reduced output: Check for mesh blockage
- No aerosol: Verify battery status and medication volume
- Irregular spray pattern: Inspect for damage
- Device malfunction: Contact manufacturer support
