Description

The Avanos MIC-KEY Low-Profile Balloon Gastrostomy Button is a skin-level gastrostomy tube designed for long-term enteral nutrition, medication delivery, and gastric decompression in pediatric through adult patients. Its low-profile design helps reduce snagging and visibility, while an internal inflatable balloon provides secure retention.

Design and materials

• Low-profile external base with skin-level profile
• Internal inflatable retention balloon
• Feeding port with anti-reflux valve that remains closed when no extension set is attached
• Medical-grade silicone construction; not made with natural rubber latex; not formulated with DEHP
• Radiopaque stripe for visualization (where provided)

Sterility and use

• Feeding tube: sterile (ethylene oxide); single-use only
• ENFit extension sets: non-sterile; reusable for a single patient only; do not share between patients

Connectors and compatibility

• Use only MIC-KEY extension sets with the MIC-KEY feeding port
• Extension sets feature a SECUR-LOK right-angle patient-end connector designed to interface with and protect the valve, helping reduce leaks and accidental disconnection
• ENFit connectors (ISO 80369-3) on the feeding side; Y-connector includes a dedicated medication port; integrated tubing clamp
• Extension sets are compatible with MIC-KEY low-profile G, J, and GJ feeding tubes

Sizes and specifications

• French sizes: 12, 14, 16, 18, 20, 24 Fr
• Stoma length options (availability varies by size): 0.8, 1.0, 1.2, 1.5, 1.7, 2.0, 2.3, 2.5, 2.7, 3.0, 3.5, 4.0, 4.5, 5.0 cm
• Balloon inflation volumes (use sterile or distilled water):
• 12 Fr: 3 mL recommended (maximum 5 mL)
• 14–24 Fr: 5 mL recommended (maximum 10 mL)

Typical kit contents (ENFit configuration)

• MIC-KEY Low-Profile G-tube
• Continuous Feed Extension Set, 12 in (for pump/continuous feeding, medication delivery, and/or venting)
• Bolus Feed Extension Set, 12 in (for bolus feeding and/or venting)
• 6 mL luer-slip syringe for balloon inflation/deflation
• 35 mL ENFit enteral syringe
• Patient Use and Care Guide
• In some regions, an insertion stylet and water-soluble lubricant are included

Compatible ENFit extension sets (accessories)

• Continuous Feed Extension Set: available lengths include 30 cm and 60 cm; two-port Y-connector with medication port; SECUR-LOK right-angle patient-end; integrated clamp; natural rubber latex-free; DEHP-free; non-sterile; reusable single-patient
• Additional MIC-KEY ENFit extension set types (e.g., bolus and medication) are available with SECUR-LOK patient-end connectors

Handling and connection notes

• To connect an extension set: align the black marks, insert the SECUR-LOK tip, and turn clockwise up to about three-quarters of a turn to lock; turn counter-clockwise to disconnect; keep locked during feeding and do not overtighten
• Flush the tube and extension sets before and after each use to help prevent clogging
• Inflate the retention balloon only with sterile or distilled water; do not overinflate

Placement and replacement

• May be placed percutaneously under fluoroscopic, laparoscopic, or endoscopic guidance; suitable as a replacement device in a mature tract

Contraindications (examples)

• Ascites, colonic interposition, portal hypertension, peritonitis, morbid obesity