Description

The MIC-KEY low-profile balloon gastrostomy button is a skin-level, balloon-retained G-tube designed for long-term enteral nutrition, medication delivery, and gastric venting/decompression in pediatric and adult patients (prescription use; region dependent). Its button-style profile minimizes snagging and clothing interference while providing secure access to the stomach through compatible MIC-KEY extension sets with ENFit connectors.

Design and materials

• Low-profile, skin-level design to reduce pull and external bulk
• Internal inflatable retention balloon
• High-clarity, medical-grade silicone construction; not made with natural rubber latex
• Radiopaque stripe for visualization on imaging
• Feeding port includes an anti-reflux valve that remains closed when no extension is attached

Connector system and compatibility

• Patient-end: MIC-KEY SECUR-LOK lock-and-key mechanism with alignment marks; connect only MIC-KEY extension sets
• Feeding-side on extension sets: ENFit (ISO 80369-3) connectors
• Extension sets feature a Y-connector with a dedicated medication port and integrated clamp
• G-tube configuration only; no jejunal port

Standard kit contents (ENFit configuration)

• MIC-KEY low-profile G-tube
• Two ENFit extension sets: Continuous Feed (~12 in/30 cm) and Bolus Feed (~12 in/30 cm), both with SECUR-LOK patient-end connectors
• 6 mL luer slip syringe (for balloon inflation/deflation)
• 35 mL ENFit enteral syringe
• Gauze pad
• Insertion stylet and water-soluble lubricant where supplied (US only)

Sizes and options

• French sizes: 12, 14, 16, 18, 20, 24 Fr
• Stoma lengths (cm): 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
• Example variants: 14 Fr (e.g., 3.0 cm), 18 Fr (0.8–5.0 cm), 20 Fr (e.g., 3.5 cm)

Balloon inflation (use sterile/distilled water only)

• 12 Fr: 3 mL recommended (maximum 5 mL)
• 14–24 Fr: 5 mL recommended (maximum 10 mL)

Placement and replacement

• May be placed percutaneously under fluoroscopic, laparoscopic, or endoscopic guidance
• Suitable as a replacement device via an established stoma tract

Sterility and reuse

• G-tube: sterile (ethylene oxide); single-use
• Extension sets: non-sterile; reusable for a single patient; latex-free and DEHP-free

MRI safety

• MR Conditional at 1.5 T and 3 T; whole-body SAR <2 W/kg (Normal Operating Mode)
• Expected temperature rise <1.3 °C after 15 minutes
• Image artifact typically <45 mm at 3 T (gradient echo)

Usage notes

• Flush through the extension set to avoid damaging the anti-reflux valve in the feeding port
• Supports gastric venting/decompression in addition to feeding
• Statements about weighted jejunal portions or separate jejunal ports apply to GJ devices and do not apply to this G-tube
• Use per clinician direction and institutional protocol; prescription-use device (region dependent)