Description

The MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube (ENFit) is a skin-level, double-lumen gastrojejunostomy device designed for long-term enteral access. It enables post-pyloric (jejunal) feeding while allowing gastric decompression/venting through a separate lumen. Suitable for pediatric and adult patients, it is placed by a clinician under endoscopic and/or radiologic guidance and can be used for initial placement (with an Avanos introducer system) or as a replacement in an established stoma tract. MIC-KEY is a trademark of Avanos Medical, Inc.

Key features

• Low-profile, “button” design for comfort and discretion
• Internal silicone, water-inflated retention balloon (BAL port access)
• Weighted (tungsten) jejunal portion to help maintain position
• Multiple jejunal exit ports for distribution of feeds
• Radiopaque stripe for visualization on imaging
• Tapered distal tip to aid placement
• Clearly labeled gastric and jejunal ports

Connectivity and ports

• Three access points: JEJUNAL (feeding), GASTRIC (decompression/venting), BAL (balloon)
• One-way valves in JEJUNAL and GASTRIC ports open when a MIC-KEY extension set is attached
• SECUR-LOK mechanism between tube and MIC-KEY extension sets; ENFit-compatible connectors
• No dedicated medication port; medications administered via jejunal or gastric port per clinical direction

Materials and sterility

• Medical-grade silicone tube; components may include polyether imide, polycarbonate, stainless steel spring, barium sulfate (radiopacity)
• Extension sets: PVC (citrate softener) and ABS; clamps polypropylene
• Not formulated with natural rubber latex or DEHP/DBP/BBP
• Gamma-sterile, single-use; prescription device (Rx)

Sizes and options

• French sizes: 14 Fr, 16 Fr, 18 Fr, 22 Fr
• Jejunal limb lengths: 15 cm, 22 cm, 30 cm, 45 cm
• Stoma length options: approximately 1.0–7.0 cm (varies by diameter)
• Balloon inflation volume is size-dependent—refer to device IFU

Kit contents (typical)

• MIC-KEY GJ tube
• MIC-KEY ENFit extension sets (e.g., continuous/pump right-angle and bolus straight)
• 35 mL ENFit syringe and 6 mL luer-slip syringe
• Patient use & care/quick start materials; gauze pads

Use and care highlights

• Inflate/deflate retention balloon with sterile or distilled water via BAL port; follow IFU
• For gastric decompression, use gravity or low intermittent suction per clinical direction; do not use continuous or high intermittent suction
• Do not inject formula or medications directly into the port valve; attach the appropriate MIC-KEY extension set
• Not for at-home replacement; placement and replacement by a clinician

Regulatory and storage

• CE marked medical device (Class IIb); manufactured under an ISO 13485–compliant quality system
• Store in a cool, dry place away from heat/radiation
• Typical shelf life: 2 years from date of manufacture