Description

The Avanos MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube is a skin-level, button-style device that provides long-term enteral access for pediatric and adult patients who require jejunal feeding while allowing gastric decompression or venting. A single device supports both functions via distinct gastric (G) and jejunal (J) lumens, secured internally by a water-inflated silicone balloon and externally by a low-profile bolster.

Key features

• Low-profile button design for discreet wear; extension sets detach when not in use.
• Medical-grade, high-clarity silicone; latex-free.
• Weighted, radiopaque jejunal segment to help maintain position and aid visualization; radiopaque stripe for imaging.
• Multiple, large jejunal exit ports designed to promote flow and reduce clogging.
• Jejunal segment engineered with high columnar strength to help maintain placement.
• Tapered distal tip to aid placement.
• Clearly labeled ports and one-way valves that open only when a MIC-KEY extension set is attached.

Ports and functions

• JEJUNAL port: primary feeding; medications per clinical direction.
• GASTRIC port: decompression/venting; medications per clinical direction.
• BAL port: balloon inflation/deflation.
• No dedicated medication port; medications are administered through the J or G port as directed.

Connectivity and compatibility

• Accessed using MIC-KEY extension sets; one extension type connects to both G and J ports.
• ENFit connectors on patient-access ends; locking mechanism secures the extension to the button.
• Available as tube-only or in kits with MIC-KEY ENFit extension sets (continuous and bolus options).
• Compatible with the FARRELL Decompression System for venting when clinically indicated.

Sizes and options

• French sizes: 14, 16, 18, 22.
• Jejunal lengths (size-dependent): approximately 15, 22, 30, 45 cm.
• Stoma length options: approximately 1.0 to 7.0 cm (availability varies by diameter and jejunal length).

Placement and replacement

• Placed endoscopically through a gastric stoma with the jejunal limb positioned beyond the pylorus.
• Not intended for at-home replacement.

Sterility and regulatory

• Sterile, gamma sterilized.
• Single-use, single patient.
• Prescription device (Rx only).

Use and maintenance notes

• Low-profile valves require a compatible MIC-KEY extension set to open for feeds, liquids, and medications.
• Do not rotate jejunal or gastric-jejunal tubes; rotation may torque and retract the tube toward the stomach.
• Balloon maintenance: inflate with sterile or distilled water only; check volume per IFU at recommended intervals; stabilize the tube when adding or removing balloon water.
• Medications: prefer liquid formulations; avoid thick preparations; do not crush enteric-coated tablets; if crushing is permitted, mix thoroughly with water; flush with water before and between medications; do not mix medications with formula.

Manufacturer resources

Avanos provides MIC-KEY GJ-Tube Instructions for Use, a Quick Start Guide, and educational videos on device maintenance, stoma care, and balloon care.