Description

The Avanos MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube is a skin-level “button” enteral device placed through a gastric stoma with the distal limb positioned in the jejunum. It is intended for pediatric and adult patients who require simultaneous post-pyloric jejunal feeding and gastric decompression/venting.

Access ports and external components

• JEJUNAL port: For enteral feeding; a one-way valve opens when a MIC-KEY extension set is attached.
• GASTRIC port: For decompression/venting; a one-way valve opens with a MIC-KEY extension set. Medications may be administered via jejunal or gastric port per clinical direction; no dedicated medication port.
• BAL port: For inflation/deflation of the internal retention balloon.
• Low-profile external head with detachable extension sets that can be disconnected between feeds for comfort.

Materials and construction

• Medical-grade, high-clarity silicone; latex-free.
• Internal silicone retention balloon for secure placement.
• Radiopaque, weighted jejunal segment and radiopaque stripe for imaging visibility.
• Multiple jejunal exit ports and gastric lumen openings to support flow and help minimize clogging.
• Tapered distal tip to aid placement and high columnar strength to help maintain jejunal position.

Connectivity and kit

• MIC-KEY extension sets quarter-turn lock to the button via the Secur-Lok interface.
• ENFit connectivity is provided through the included extension sets, available for continuous and bolus feeding.
• A single extension set style is compatible across all tube sizes.

Sizes and selection

• French sizes: 14, 16, 18, 22.
• Jejunal lengths (size-dependent): 15 cm, 22 cm, 30 cm, 45 cm.
• Stoma (stem) lengths: approximately 1.0–7.0 cm; buttons are sized by stem length and tube caliber.

Sterility and use conditions

• Sterile (gamma sterilized); single-use; prescription device (Rx only).

Balloon inflation and handling

• Inflate the internal balloon with sterile water only (do not use saline).
• Pretest balloon inflation/deflation prior to placement.
• Use the fill volume specified on the device labeling.

Placement and replacement considerations

• Placed through a gastric stoma with the distal limb positioned in the jejunum.
• Exchange/replacement of GJ tubes requires endoscopic or fluoroscopic guidance; not intended for blind bedside replacement.

Design context

• Low-profile, skin-level design helps reduce accidental pulling and can improve comfort, often preferred in pediatric use.
• Part of the MIC-KEY Low-Profile Feeding Tube family (Gastric, Gastro-Jejunal, and Jejunal variants).