Description

The MIC-KEY (Avanos Medical) Low-Profile Balloon Gastrostomy Button is a skin-level G-tube designed for long-term enteral access in pediatric and adult patients. It supports delivery of nutrition and medications and can also be used for gastric decompression/venting. Placement is performed by a clinician per instructions for use, including percutaneous placement under fluoroscopic, laparoscopic, or endoscopic guidance, or as a replacement through an established stoma tract.

Design and materials

• Low-profile “button” at skin level with capped feeding port (G-port only; no jejunal port)
• Anti-reflux valve in the feeding port to help minimize backflow when not connected
• Internal inflatable retention balloon (silicone) with dedicated balloon port for luer slip syringe
• High-clarity, medical-grade silicone; latex-free
• Radiopaque stripe and recessed distal tip
• Device is ETO sterile; included extension sets are non-sterile, single-patient reusable

Connectors and compatibility

• Use only MIC-KEY extension sets with the MIC-KEY feeding port
• Extension sets provide ENFit connections to enteral syringes/administration sets and a MIC-KEY SECUR-LOK patient-end connector
• SECUR-LOK: align the black marks, turn clockwise a quarter turn to lock (do not over-rotate); turn counter-clockwise to remove; keep locked during feeding
• Feeding methods: bolus via the bolus extension set; continuous feeding via pump/administration set using the continuous feed extension (Y-connector with medication port and clamp)
• Do not insert formula or medications directly into the feeding port valve; deliver only through a connected MIC-KEY extension set

Kit contents (ENFit configuration)

• MIC-KEY Low-Profile Gastrostomy Feeding Tube
• Two ENFit extension sets (nominal 12 in/30 cm): Continuous Feed (Y-connector with medication port and clamp) and Bolus Feed
• 6 mL luer slip syringe (balloon inflation/deflation)
• 35 mL ENFit enteral syringe (priming/flushing via extension)
• Gauze pad
• Insertion stylet and water-soluble lubricant (included in some markets)
• Patient Use & Care Guide (Stoma Measuring Device not included)

Sizes and balloon inflation

• French sizes: 12, 14, 16, 18, 20, 24 Fr
• Stoma lengths: 0.8–5.0 cm (various increments)
• Use sterile or distilled water only for balloon inflation (never air or saline)
• 12 Fr: 3 mL recommended; maximum 5 mL
• 14–24 Fr: 5 mL recommended; maximum 10 mL

Care and maintenance

• Clean skin around the stoma and external tube daily with mild soap and water
• During care, gently rotate the button 360° plus a quarter turn
• Flush before and after feeds/medications and periodically during continuous feeds per clinician guidance
• Extension sets: wash in warm soapy water after each use; air dry; single-patient reuse only
• Check balloon volume regularly (often at least weekly) and refill to the prescribed amount while stabilizing the tube

Replacement and sizing

• Replacement timing is determined by a clinician
• Reassess stoma length if weight changes occur, the button feels tight/loose, there is irritation/discomfort, or the tube does not rotate normally
• Clinicians may advise keeping a replacement MIC-KEY device available