Description

The Avanos MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube Kit (ENFit) is a skin-level, button-style gastrojejunostomy device that provides dual access for jejunal feeding and gastric decompression/venting in pediatric and adult patients. Placed through an existing gastric stoma with the distal limb positioned in the jejunum, it uses an internal inflatable silicone balloon for retention and connects to ENFit-compatible extension sets. The low-profile design supports comfort and discretion while enabling simultaneous J feeding and G venting per clinical direction.

Design and ports

• Low-profile button with external bolster and inflatable silicone retention balloon.
• Three labeled access points: JEJUNAL (feeding), GASTRIC (decompression/venting; medications per clinical direction), BAL (balloon only).
• One-way valves in G and J ports open only when a MIC-KEY extension is attached.
• No dedicated medication port; medications are given via J or G as directed.

Connectivity

• MIC-KEY SECUR-LOK button-to-extension interface (brand-specific, proprietary).
• Extension sets feature ENFit connectors for patient-side tubing.
• Attachment: align black marks, push in firmly, then turn clockwise up to 3/4 turn to lock; to disconnect, hold the button center and pull the connector straight out.
• Use only MIC-KEY extensions designed for MIC-KEY ports; other brands are not interchangeable. ENFit caps/connectors twist to lock/unlock; avoid overtightening.

Key features

• Weighted jejunal section supports transpyloric position.
• Multiple jejunal exit ports to promote flow and reduce occlusion risk.
• Radiopaque stripe for visualization; tapered distal tip.
• Clearly labeled gastric and jejunal ports.

Sizes and options

• Diameters: 14, 16, 18, 22 Fr.
• Jejunal lengths: 15, 22, 30, 45 cm (availability varies by diameter).
• Stoma (button) lengths: ~1.0–7.0 cm (availability varies).
• Jejunal length measured from distal balloon aspect to catheter tip.

Kit contents (may vary)

• MIC-KEY Low-Profile GJ tube.
• ENFit extension sets: continuous (right-angle) and bolus (straight), ~30 cm.
• 35 mL female ENFit syringe; 6 mL Luer-slip syringe (balloon management).
• Gauze pads; introducer cannula where indicated.

Materials and biocompatibility

• Tube/balloon: medical-grade silicone; components may include polyether imide, polycarbonate, barium sulfate; stainless steel spring in connectors.
• Extensions: PVC with citrate softener; ABS; polypropylene clamp.
• Not formulated with natural rubber latex, DEHP, DBP, or BBP.

Intended use and indications

• For post-pyloric (jejunal) feeding with optional gastric decompression/venting.
• Clinical scenarios: impaired gastric emptying, gastric outlet obstruction, severe reflux/aspiration risk, post-esophagectomy/gastrectomy, and similar indications.
• Suitable for initial placement (with appropriate technique) or replacement in a mature tract per IFU and clinical judgment.

Contraindications and notes (summary)

• Potential contraindications: ascites, colonic interposition, portal hypertension, peritonitis, morbid obesity.
• Single-use device; do not reuse, reprocess, or resterilize.

Handling and safety

• Do not rotate GJ tubes; rotation can retract the J limb into the stomach.
• If J limb migrates or tube splits proximal to the jejunum, stop J feeds if gastric feeding is unsafe and arrange evaluation with imaging.
• Balloon: inflate with sterile/distilled water only; verify/maintain volume per IFU; stabilize tube during adjustments.
• Medication administration: prefer liquids; do not crush enteric-coated drugs; flush with water before, between, and after meds. Use a 35 mL ENFit syringe to prime/flush extensions per IFU.
• Leakage management (button tubes): address constipation, adjust feed rate, use pulsatile flushing to clear valves; if unresolved, keep cap closed or leave an extension connected as directed.

Sterility, storage, and regulatory

• Sterile, gamma-irradiated; Rx only.
• Store in a cool, dry area away from heat and radiation sources.
• CE marked (Class IIb) medical device; manufactured in an ISO 13485–compliant facility.

Placement

• Designed for endoscopic or radiologic placement per institutional practice and IFU.