Description

The Avanos MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube is a skin-level “button” device placed via a gastric stoma with the distal limb positioned in the jejunum. It provides two separate lumens to enable jejunal feeding and simultaneous gastric decompression/venting. Intended for pediatric and adult patients; prescription use only. Available in ENFit and non-ENFit configurations; to be used with MIC-KEY extension sets.

Design and features

• Low-profile external bolster with an internal inflatable retention balloon.
• Three access points: JEJUNAL (feeding), GASTRIC (decompression/venting), and BAL (balloon). JEJUNAL and GASTRIC ports include one-way anti-reflux valves that open when a MIC-KEY extension set is attached; ports are labeled and feature black orientation lines for correct alignment.
• Weighted jejunal segment with multiple distal exit ports for distribution of feeds; tapered distal tip and radiopaque stripe for visualization.
• Medical-grade silicone; latex-free; sterile (gamma sterilized); single-use.
• No dedicated medication port; medications are delivered via the jejunal or gastric port per clinical direction.

Connectivity and compatibility

• Offered with ENFit connectors (enteral-only) or catheter-tip connectors (non-ENFit), depending on configuration.
• Use MIC-KEY extension sets only: Continuous (pump) and Bolus types.

Sizes and options

• French sizes: 14, 16, 18, 22 Fr.
• Jejunal lengths: 15, 22, 30, 45 cm (availability varies by diameter and stoma length).
• Stoma (shaft) lengths: approximately 1.0–7.0 cm in select increments (availability varies).

Typical kit contents

• MIC-KEY GJ Continuous Feed Extension Set (~12 in).
• MIC-KEY GJ Bolus Feed Extension Set (~12 in).
• 35 mL syringe (venting, priming, flushing).
• 6 mL Luer slip syringe (balloon inflation/deflation with sterile or distilled water).

Use highlights

• Align black orientation lines on the extension set and the selected port; push in and turn clockwise about three-quarters of a turn until slight resistance. Keep locked during feeding.
• To disconnect, rotate counterclockwise until lines re-align and gently detach; cap ports afterward.
• Flush the tube and extension sets before and after every use to help prevent clogging.

Balloon inflation (sterile or distilled water only)

• Jejunal 15/22/30 cm variants: recommended 3 mL; maximum 5 mL.
• Jejunal 45 cm variants: recommended 7 mL; maximum 10 mL.

Feeding and decompression

• Jejunal feeding: connect an extension set to the JEJUNAL port; flush per clinical direction. For continuous feeds, attach to an enteral feeding pump set.
• Gastric decompression/venting: connect a Bolus Extension Set to the GASTRIC port. Use gravity drainage or low intermittent suction only; do not use continuous or high intermittent suction.

Care, fit, and replacement

• Clean the external tube and base with warm water and mild soap; rinse and dry thoroughly. Do not rotate the external bolster.
• Clean JEJUNAL, GASTRIC, and BAL ports with a cotton-tipped applicator or soft cloth; keep anti-reflux valves free of residue. Do not inject formula or medications directly into a port valve—always use an appropriate extension set.
• Clean skin around the stoma daily; wash hands before handling; use only water-soluble lubricant if needed.
• External base should rest about 1–2 mm above the skin; contact a clinician if too tight/loose or with weight change or stoma issues. Stoma length is clinician-measured; replacement timing is clinician-directed. Extension sets are typically replaced every few weeks.
• Follow the product Instructions for Use and clinician guidance for setup, use, inflation volumes, and maintenance.