Description

The Avanos Medical MICROCUFF Adult Endotracheal Tube (ETT) family comprises cuffed, single‑use tubes for oral or nasal intubation in adult patients. The design emphasizes an effective tracheal seal at lower cuff pressures to help limit peritubal leakage and reduce micro‑aspiration during mechanical or prolonged ventilation in OR, ICU, and ED settings.

Intended Use

• Establish and maintain an artificial airway in adult patients and support mechanical or prolonged ventilation.
• Provide a reliable tracheal seal at low cuff pressures to help reduce leakage of pharyngeal secretions.

Design and Materials

• Microthin polyurethane cuff (approximately 10–13 µm), cylindrical geometry, engineered to minimize channel formation and provide broad contact for sealing at lower pressures.
• “Self‑sealing” behavior of the thin PU cuff to reduce leakage around the tube.
• PVC tube body, DEHP‑free, designed to resist kinking at body temperature.
• Airway safety/placement aids: Murphy Eye near the tip, Magill curve for oral/nasal use, depth and measurement markings with a black vocal cord marker and positioning bands, and a continuous radiopaque line for X‑ray visibility.
• Single‑use; cuff material is latex‑free.

Variants and Sizes

Standard MICROCUFF Adult ETT

• Purpose: Adult airway management where a high‑quality seal at low cuff pressure is desired.
• Sizes (ID): 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 10.0 mm.

MICROCUFF Subglottic Suctioning Adult ETT

• Added function: Integrated subglottic suction/rinse lumen to manage secretions above the cuff.
• Ports/controls: Dedicated suction port and separate rinse port. The suction line is open unless both orange buttons are pressed simultaneously; pressing both closes the suction line for rinsing.
• Operational guidance: Connect suction; if using a subglottic pump, set intermittent suction <120 mmHg. Verify cuff pressure. For rinsing, attach a saline syringe/vial and close the suction line (press both buttons), then instill saline. For suctioning, release the buttons to open the line and use automatic intermittent suction or slow manual suction; repeat as secretion load warrants. The system remains closed during saline instillation by design.
• Sizes (ID): 7.0, 7.5, 8.0, 8.5, 9.0 mm.

Regulatory and Packaging

• Device family is FDA 510(k) cleared. Subglottic Suctioning variant clearance includes a saline rinse indication (K120988).
• Supplied sterile; typical packaging is 10 tubes per box.

Evidence Summary

• Benchtop testing under simulated clinical conditions has demonstrated effective sealing performance of the MICROCUFF polyurethane cuff at lower cuff pressures across varied scenarios (e.g., changes in PEEP, circuit disconnection, spontaneous breathing), supporting its design intent to limit leakage and micro‑aspiration.

Use Notes

• Monitor and maintain appropriate cuff pressure to sustain a low‑pressure seal and protect tracheal mucosa, following institutional protocols and professional training.