Description

The Avanos MIC-KEY Low-Profile Balloon Gastrostomy (G) Button is a skin-level feeding access device for long-term enteral nutrition, medication administration, and gastric decompression in pediatric and adult patients. It is used with dedicated MIC-KEY ENFit extension sets that attach to the button to deliver bolus or continuous feeds, medications, and to vent when required.

Key Features and Materials

• Low-profile, skin-level “button” design for comfort and discretion.
• Internal inflatable retention balloon helps secure placement.
• Feeding port includes an internal anti-reflux valve that stays closed when not connected and opens with a MIC-KEY extension set.
• High-clarity, medical-grade silicone; natural rubber latex–free; sterile, single-patient device.
• Radiopaque stripe for visualization.

Connections and Compatibility

• Patient-side interface accepts MIC-KEY extension sets only (SECUR-LOK lock-and-key style); align indicator marks and twist clockwise to lock.
• Extension sets provide ENFit connections compliant with ISO 80369-3 to support enteral-only compatibility and reduce wrong-route misconnections.

Sizes and Balloon Inflation

• French sizes: 12, 14, 16, 18, 20, 24 Fr; stoma (shaft) lengths commonly available from 0.8 to 5.0 cm.
• Balloon inflation (sterile or distilled water only): 12 Fr recommended 3 mL (max 5 mL); 14–24 Fr recommended 5 mL (max 10 mL).

MIC-KEY ENFit Extension Sets

• Purpose: Connect the button to syringes or feeding sets for bolus or pump/continuous delivery; also suitable for venting.
• Patient end: MIC-KEY SECUR-LOK right-angle connector with safety ring; engages the valve and swivels to reduce torque.
• Feeding end: ENFit connection; many variants include a Y-connector and integrated clamp.
• Materials/handling: Non-sterile, single-patient reusable; latex-free and DEHP-free; typical lengths ~30 cm (12 in) and ~60 cm (24 in).
• Types: Continuous Feed Right-Angle, Bolus (straight or right-angle), Medication; use G-designated sets with the MIC-KEY G-button.

Typical Kit Components (ENFit-configured)

• MIC-KEY Low-Profile Gastrostomy Feeding Tube (G-button).
• ENFit extension sets: 12-inch Continuous Feed and 12-inch Bolus Feed (both with SECUR-LOK right-angle connectors).
• 6 mL Luer Slip syringe for balloon inflation/deflation.
• 35 mL ENFit enteral syringe for priming/flushing/bolus.
• Patient-use/care guide (insertion stylet and lubricant may be included regionally).

Use and Handling Highlights

• Always administer through a MIC-KEY extension set; keep the feeding port capped when not in use.
• Inflate the retention balloon with sterile or distilled water only; do not use saline, tap water, or air.
• Flush the tube and extension set before and after use per clinical protocol.

Replacement and Maintenance

• Extension sets: non-sterile, single-patient reusable; replace per IFU/clinical protocol (commonly about every two weeks).
• Check and maintain balloon volume per IFU/clinician guidance to the prescribed amount.

Notes

• Information specific to GJ devices does not apply to this G-button model.
• Standard MIC-KEY G-button ENFit extension sets are non-sterile reusable accessories; some third-party listings may differ in description.