Avanos MIC Bolus G Gastrostomy Feeding Tube — 0110 Series

By Avanos Medical  |  Item# Format: 0110-[FR]  |  FSA/HSA Eligible  |  Sold Each

Designed for Bolus (Scheduled) Feeding  |  Dual Exit Ports for Faster Formula Flow  |  SECUR-LOK Retention Ring — Air Circulation at Stoma  |  Color-Coded Balloon Port by French Size  |  Graduated Centimeter Markings  |  Luer-Lok Balloon Port  |  12FR–24FR  |  Silicone  |  Radiopaque  |  Gamma Sterilized

The Avanos MIC Bolus G Gastrostomy Feeding Tube is the Avanos standard-format G-tube specifically designed for scheduled bolus enteral feeding — delivering formula in discrete meal-timed portions at intervals throughout the day rather than as a continuous slow drip. The Bolus tube's dual exit ports at the distal tip allow formula to exit the tube at the flow rate that bolus delivery requires; a single exit port restricts flow significantly when a larger volume must be delivered in a 15–30 minute feeding window. The SECUR-LOK external retention ring holds the tube at the correct skin-surface depth while its open design allows air to circulate around the stoma site, reducing the moisture accumulation and skin maceration that occurs when external retention rings press continuously against the peristomal skin. Color-coded balloon port by French size allows fast identification of the balloon inflation port in a multi-port tube without reading labels. Graduated centimeter markings on the tube shaft allow the clinician or caregiver to confirm correct tube depth at each interaction without additional measurement tools. Luer-Lok balloon port for secure syringe attachment during balloon maintenance. Silicone. Radiopaque stripe for X-ray visualization. Gamma sterilized. 7 French sizes: 12FR–24FR. Item# format: 0110-[FR]. FSA/HSA eligible. By Avanos Medical.

Available Sizes

Confirm French size and balloon volume from your prescriber's order before ordering. Call 1-866-218-0902 with specification questions.

MIC Bolus G vs. MIC G vs. MIC-KEY G — Avanos G-Tube Family

Key Features

• Designed for bolus (scheduled) feeding — the MIC Bolus G tube is indicated for patients whose enteral feeding regimen uses bolus delivery: discrete volumes of formula administered at mealtimes (typically 250–500mL per feeding, 3–6 times daily) rather than continuous infusion over 12–24 hours; bolus feeding more closely mimics natural eating patterns, allows for greater patient mobility between feedings, and is the preferred method for many home care and community-dwelling tube-fed patients; the tube's design accommodates the flow rate demands of bolus delivery that a single-exit-port continuous feeding tube may not support efficiently
• Dual exit ports — faster formula flow for bolus delivery — the Bolus G tube has two openings at the distal tip rather than the single opening of a standard continuous feeding tube; when formula is delivered by bolus under gravity or gentle push, two exit ports allow the liquid to flow out of the tube at approximately twice the rate of a comparable single-port tube, reducing the time required for each bolus feeding session; this matters clinically because slow bolus delivery can increase aspiration risk from prolonged gastric distension and is less practical for home caregivers managing timed feeds around a patient's daily schedule
• SECUR-LOK external retention ring — air circulation at stoma — the external retention ring holds the tube shaft at the correct depth against the skin surface; the SECUR-LOK design differs from standard flat retention rings in that its geometry allows air circulation between the ring and the peristomal skin; this ventilation reduces the moisture and heat accumulation that flat rings create against the skin, which progressively leads to maceration, skin breakdown, and granulation tissue formation at the stoma site; for patients wearing the tube long-term (months to years), this peristomal skin protection benefit accumulates meaningfully over time
• Color-coded balloon port by French size — the balloon inflation port is color-coded based on the tube's French size, using the international color standard; when the clinician or caregiver performs a balloon check or tube change, the color-coded port allows instant identification of the correct port without reading text labels on the tube — particularly useful in poor lighting conditions or for caregivers with reduced near vision
• Graduated centimeter markings on tube shaft — depth markings on the external shaft allow the clinician or caregiver to verify that the tube remains at the correct insertion depth at each patient interaction, without requiring a separate measurement tool; a change in the visible centimeter marking (migration inward or outward) is an early indicator of balloon deflation, tube dislodgement beginning, or stoma tract changes that warrant clinical evaluation
• Luer-Lok balloon port — secure syringe engagement — the Luer-Lok (locking) connection on the balloon port provides a more secure syringe-to-port seal than a luer-slip connection; during balloon inflation or deflation, the locking mechanism prevents the syringe from slipping off the port, particularly important during balloon maintenance at the weekly balloon water check when the patient may be moving or the caregiver is working single-handed
• 12FR available — smallest Avanos standard G-tube size — the 0110 series offers 12FR, the smallest size in the Avanos standard G-tube lineup; 12FR is typically used in pediatric patients or small adults with narrow gastrostomy tracts where a larger tube would not fit comfortably
• Silicone internal retention balloon | Tapered distal tip | Radiopaque stripe | Gamma sterilized | FSA/HSA eligible | By Avanos Medical

Clinical FAQs

What is bolus feeding and who is a candidate for a bolus-style G-tube?

Bolus gastrostomy feeding is a method of enteral nutrition delivery in which formula is administered in discrete volumes — typically 250 to 500 milliliters per feeding — over a period of 15 to 30 minutes, several times per day at approximately meal intervals. This delivery pattern mimics natural eating more closely than continuous infusion, which delivers formula at a slow constant rate over 12 to 24 hours. Bolus feeding allows the patient's stomach to fill, empty, and rest between feedings in a rhythm similar to the normal gastric cycle, and it gives the patient and caregiver predictable free time between feedings rather than requiring continuous tube management. Bolus feeding is preferred for patients who have a functioning gastrointestinal tract with adequate gastric motility, are not at elevated risk of aspiration from rapid gastric filling, are ambulatory or active in home or community settings where continuous pump-assisted feeding is impractical, and want to maintain a feeding schedule that allows participation in daily activities. Continuous feeding is used when bolus delivery causes aspiration, reflux, or intolerance symptoms such as nausea, vomiting, or rapid gastric distension; for patients with impaired gastric emptying (diabetic gastroparesis, post-surgical gastric dysmotility); and for patients who receive overnight feeding during sleep when bolus delivery is not practical. The prescribing physician and dietitian determine the appropriate feeding mode based on the patient's gastrointestinal function, aspiration risk, lifestyle, and formula tolerance. The MIC Bolus G tube is the appropriate Avanos tube when bolus delivery has been prescribed.

How do the dual exit ports affect clinical practice compared to a single-port tube?

The practical effect of dual exit ports versus a single exit port is primarily one of flow rate and feeding session efficiency. Formula flowing through an enteral tube obeys the same fluid dynamics as liquid in any tube: flow rate is proportional to the cross-sectional area of the exit opening and to the pressure difference driving the flow. A single exit port at a given French size diameter restricts flow to the rate that one opening can accommodate. Two exit ports at the same location provide approximately twice the total exit cross-section, allowing formula to flow out of the tube at a proportionally higher rate under the same driving pressure (gravity or gentle syringe push). For continuous feeding, where formula flows slowly over many hours, this difference is clinically insignificant — a single port is adequate for the slow flow rates involved. For bolus delivery, where a caregiver or patient is administering 300 to 400 milliliters of formula by gravity in a feeding bag over 20 to 30 minutes, the single-port flow restriction can meaningfully extend the feeding session beyond the intended window, particularly with thicker formula formulations; dual ports reduce this friction. The faster flow rate of dual ports also reduces the likelihood of the formula column stalling in the tube if the patient moves or the tube briefly kinks, which can interrupt gravity-driven bolus delivery from a single port. For patients self-managing bolus feeds at home or in a community setting, the shorter, more reliable feeding session that dual ports support is a practical quality-of-life advantage.

How do I perform the weekly balloon water check on the MIC Bolus G tube?

The retention balloon of the MIC Bolus G tube should be checked once weekly to confirm that the correct volume of sterile water remains in the balloon; balloon volume loss over time (from slow deflation through the balloon membrane or from micro-leaks) reduces retention force and can eventually allow the tube to pull out. To check the balloon: gather a Luer-Lok syringe sized appropriately for the balloon volume (3–5mL for pediatric sizes, 7–10mL for adult sizes), sterile water for refilling, and clean gloves. Attach the syringe to the balloon inflation port using the Luer-Lok connection — turn until fully locked. Gently withdraw the syringe plunger to aspirate the water from the balloon. Note the volume aspirated; if it is less than the prescribed fill volume, some water has been lost. Discard the aspirated water and refill the balloon with the prescribed sterile water volume from a fresh syringe. Do not use saline — saline can crystallize and block the balloon port over time. If you aspirate significantly less water than the prescribed volume (more than 1–2mL short), or if you are unable to aspirate water at all, the balloon may be leaking or has failed; report to the clinical team before the next scheduled tube change rather than waiting, as a significantly underinflated balloon may not provide adequate retention. The graduated centimeter markings on the MIC Bolus G tube shaft provide an additional daily check: if the visible centimeter mark is different from the expected position, tube migration should be investigated before performing the weekly balloon check. Always follow your clinical care team's specific balloon maintenance protocol as the authoritative guidance for your patient's tube.

Questions about the MIC Bolus G tube, bolus feeding protocols, or Avanos enteral accessories? Call our product specialists: 1-866-218-0902  |  Mon–Fri 9am–5pm, Sat 9am–3pm EST