Ambu AuraOnce laryngeal mask #4 321 400 000
The Ambu AuraOnce Laryngeal Mask size 4 (321 400 000) is a single-use, anatomically curved airway device made by Ambu. It features a soft, extra-thin cuff for gentle sealing at low pressure. The mask includes a universal 15 mm connector for easy integration with ventilation circuits.
The AuraOnce #4 mask is designed to replicate the natural curvature of the human airway, aiding rapid and atraumatic insertion. Its cuff and airway tube are molded as a single piece, eliminating risk of separation and increasing reliability. The reinforced tip prevents back-folding during placement, helping maintain a secure seal. Its soft cuff, only 0.4 mm thick, ensures an effective seal with minimal pressure on delicate airway tissues.
Technical Specification
| Specification | Details |
|---|---|
| Item / Catalog Number | 321 400 000 |
| Size / Patient Weight Range | Size 4, for patients ~50–70 kg |
| Maximum Cuff Inflation Volume | 30 mL |
| Maximum Intra-Cuff Pressure | 60 cm H₂O |
| Connector Type | 15 mm (standard ISO) |
| Material | Phthalate-free PVC, disposable |
Product Also Knows As:
Ambu AuraOnce #4, Aura-Once size 4 laryngeal mask, Ambu disposable LMA size 4, Ambu single-use LMA 321400000, Ambu anatomically curved LMA #4




