Description

The Avanos MIC-KEY Low-Profile Gastric-Jejunal (GJ) Feeding Tube is a skin-level, double-lumen enteral device placed through a gastric stoma, with the distal limb positioned in the jejunum. It supports simultaneous jejunal feeding and gastric decompression/venting in pediatric and adult patients.

Design and access ports

• Internal inflatable silicone retention balloon with low-profile external bolster/button.
• Three access points on the external base:
• JEJUNAL: feeding into the small intestine.
• GASTRIC: decompression/venting/drainage (intended for low intermittent suction or gravity drainage).
• BAL: balloon inflation/deflation.
• One-way (anti-reflux) valves in JEJUNAL and GASTRIC ports that open when a MIC-KEY extension set is attached.
• Clearly marked gastric and jejunal ports; low-profile external head.

Connectivity and compatibility

• Available in ENFit and non-ENFit (catheter-tip) versions.
• Designed for use only with MIC-KEY extension sets; continuous/pump and bolus extension types are available.
• ENFit versions provide enteral-only connectivity; the port-to-extension interface uses the MIC-KEY SECUR-LOK locking mechanism.

Key features

• Weighted jejunal portion helps maintain position in the jejunum.
• Multiple distal exit ports (jejunal and commonly gastric) to support flow and help reduce clogging.
• Radiopaque stripe/sections for imaging visibility.
• Tapered distal tip to aid placement.
• No dedicated medication port; medications are administered per clinical direction via gastric or jejunal port using the appropriate extension set.

Materials and sterility

• Medical-grade silicone construction; not made with natural rubber latex.
• Sterile (gamma sterilized), single-use, prescription device.

Sizes and configuration options

• French sizes: 14 Fr, 16 Fr, 18 Fr, 22 Fr.
• Jejunal lengths: 15 cm, 22 cm, 30 cm, 45 cm (availability varies by French size).
• Stoma (shaft) lengths: approximately 1.0–7.0 cm in common increments (availability varies by size).
• Jejunal length is measured from the distal aspect of the retention balloon to the catheter tip.

Balloon inflation (use sterile/distilled water)

• For 15, 22, or 30 cm jejunal length: recommended 3 ml (maximum 5 ml).
• For 45 cm jejunal length: recommended 7 ml (maximum 10 ml).

Placement and clinical use

• Suitable for endoscopic or radiologic placement.
• Designed for clinical scenarios requiring jejunal feeding with concurrent gastric drainage/decompression.

Kit versions

• ENFit kit configurations include MIC-KEY ENFit extension sets (typically continuous/pump and bolus). Contents may vary by configuration/region.