The Shiley Covidien 8CN85R is a specific model of an adult, flexible tracheostomy tube with an 8.5mm inner diameter, featuring a TaperGuard cuff (often cuffed) for better sealing and less tracheal pressure, designed for patient comfort, ventilation support, and easier weaning, and it comes with a reusable inner cannula. 

Key Features:

Size: 8.5mm Inner Diameter (ID).

Type: Adult, Flexible Tracheostomy Tube.

Cuff: Often has a TaperGuard™ Cuff (cuffed version), which helps minimize leakage and tracheal impact.

Design: Flexible PVC, with a larger inner diameter for better airflow and speech.

Cannula: Includes a reusable inner cannula for easy cleaning and airway management.

Manufacturer: Originally Covidien, now under the Medtronic brand.