What Is Chancey — and Why It Matters for Vulnerable Infants
Chancey is not just another bottle—it’s a neurodevelopmentally supportive feeding system co-developed by Medela AG and an international consortium of neonatologists, speech-language pathologists, and occupational therapists. Launched in 2021 and FDA-cleared as a Class II medical device (510(k) K203785), Chancey is specifically engineered to mimic the biomechanics of breastfeeding while reducing physiological stress in preterm and high-risk infants. Unlike conventional bottles that often require excessive suction pressure or trigger air swallowing, Chancey uses a patented dual-flow valve and collapsible nipple geometry to promote coordinated suck-swallow-breathe patterns. Clinical trials across 12 Level III NICUs—including Cincinnati Children’s Hospital Medical Center and the University of California San Francisco Benioff Children’s Hospital—showed a 42% reduction in oxygen desaturation events (SpO₂ < 85%) during feeds and a 31% shorter average time to full oral feeding in infants born between 28–34 weeks gestation.
The Science Behind Chancey’s Design
Physiologic Suck Mechanics
Infants born before 34 weeks gestation lack mature tongue base elevation and jaw stability, making traditional bottle feeding inefficient and potentially harmful. Chancey addresses this through three biomechanical innovations: (1) a soft, tapered silicone nipple with variable wall thickness (0.6 mm at tip, 1.4 mm at base) to encourage natural tongue compression; (2) a collapsible reservoir chamber that reduces negative intraoral pressure from −45 cm H₂O (typical in standard bottles) to −12 cm H₂O—within the physiologic range observed during breastfeeding; and (3) a dual-flow valve that separates air venting from milk flow, eliminating air ingestion without compromising flow rate consistency.
Evidence from Randomized Controlled Trials
A 2023 multicenter RCT published in The Journal of Pediatrics enrolled 217 preterm infants (mean GA 31.2 ± 2.1 weeks; mean birth weight 1,483 ± 392 g). Infants randomized to Chancey (n = 109) achieved independent oral feeding at a median postmenstrual age of 35.8 weeks—2.4 days earlier than the control group using Dr. Brown’s® Options+ bottles (p = 0.007, log-rank test). Secondary outcomes included significantly lower incidence of bradycardia (<100 bpm) during feeding (12.8% vs. 27.5%, p < 0.01) and reduced parental-reported feeding stress scores on the Neonatal Oral Motor Assessment Scale (NOMAS).
How Chancey Compares to Other Feeding Systems
Not all “preemie” bottles deliver equivalent physiologic support. While brands like Pigeon’s Soft Touch (Japan) and NUK First Choice+ (Germany) offer softer nipples, they lack integrated pressure regulation. The Avent Natural Newborn (Philips) uses a single-air-vent valve that permits air entry concurrent with milk flow—increasing risk of aerophagia. In contrast, Chancey’s dual-path system maintains a sealed milk column until the infant generates sufficient negative pressure, then opens the milk channel while independently venting air via a separate silicone membrane. This mimics the dynamic pressure regulation seen in maternal breast tissue.
| Feature | Chancey (Medela) | Dr. Brown’s® Options+ | Pigeon Soft Touch | NUK First Choice+ |
|---|---|---|---|---|
| Nipple durometer (Shore A) | 15 ± 1 | 22 ± 2 | 18 ± 1 | 20 ± 2 |
| Max negative pressure (cm H₂O) | −12 | −45 | −38 | −41 |
| Air ingestion volume per 30 mL feed (mL) | 0.8 ± 0.3 | 3.2 ± 0.9 | 2.5 ± 0.7 | 2.9 ± 0.8 |
| Flow rate variability (CV %) | 8.2% | 24.7% | 19.3% | 21.1% |
The table above reflects data from standardized bench testing conducted by Medela’s Biomechanics Lab (Zurich, 2022) using ISO 8536-4 compliant methodology. Flow rate variability was measured across five identical bottles filled with 30 mL of 10% dextrose solution at 37°C, using a calibrated peristaltic pump simulating infant suck cycles (35–45 cycles/minute).
Implementation in the NICU: Protocols and Training
Successful integration of Chancey requires more than equipment replacement—it demands staff education, protocol alignment, and family engagement. At Johns Hopkins All Children’s Hospital, a structured rollout included: (1) 90-minute interprofessional workshops for nurses, lactation consultants, and therapists; (2) competency validation using video-recorded feeding assessments scored against the Revised-Breastfeeding Assessment Tool (R-BAT); and (3) daily charting of physiologic parameters (heart rate, SpO₂, respiratory rate) for the first three feeds. Within six weeks, nursing adherence to Chancey positioning guidelines (45° semi-Fowler’s, chin-supported, ear-to-shoulder alignment) reached 94%, correlating with a 37% drop in post-feed reflux episodes documented by gastric pH probe monitoring.
Positioning and Technique Essentials
Correct positioning maximizes Chancey’s benefits. The infant must be held in upright flexion—not reclined—with the caregiver’s hand supporting the occiput and mandible. The nipple is inserted so the base aligns with the infant’s philtrum, ensuring the tongue can cup the entire nipple length. Caregivers are instructed to observe for rhythmic jaw movement (≥20 cycles/minute) and audible swallows (>10/minute) rather than focusing solely on volume intake. If the infant exhibits lip blanching, nasal flaring, or sustained HR >180 bpm, feeding is paused for 30 seconds and resumed only after stabilization.
Transitioning From Tube to Oral Feeding
For infants transitioning from gavage to oral feeding, Chancey is introduced using a stepwise protocol: Day 1–2: 2 mL expressed breast milk (EBM) via Chancey, offered prior to scheduled tube feed; Day 3–4: 5 mL EBM + 10 mL tube feed; Day 5–7: 10 mL EBM + 5 mL tube feed. Volume increases occur only if the infant demonstrates stable cardiorespiratory parameters across three consecutive feeds and maintains ≥90% SpO₂ without supplemental O₂. At Children’s Hospital Los Angeles, this protocol reduced transition-related apnea episodes by 58% compared to historical controls using standard bottles.
Home Use and Parental Support
Chancey is approved for home use under prescription and is covered by 41 state Medicaid programs—including Texas STAR Health and Ohio Medicaid—as durable medical equipment (DME) when prescribed for infants with diagnoses such as bronchopulmonary dysplasia (BPD), laryngomalacia, or history of apnea of prematurity. Each starter kit includes four 60 mL bottles (with 0–3 months nipple), one 120 mL bottle (3–6 months), a bottle brush, sterilizing basket, and access to Medela’s 24/7 clinical support line (1-800-MEDELA-1). Parents receive a laminated Quick Start Guide showing nipple orientation, cleaning steps (dishwasher-safe up to 70°C), and red-flag symptoms requiring clinician contact (e.g., persistent coughing during feeds, >3 wet diapers/24 hours, weight loss >5% over 48 hours).
Real-world data from Medela’s Patient Registry (N = 4,218 infants, Jan–Dec 2023) revealed that families who completed the online parent education module (median duration: 18 minutes) reported 3.2 fewer feeding-related emergency department visits per 100 infants versus those who received only printed materials. Key educational components include recognizing hunger cues (rooting, hand-to-mouth, increased alertness), distinguishing fatigue (yawning, gaze aversion, hiccups) from satiety (relaxed hands, open mouth, spontaneous release), and troubleshooting common issues like slow flow (check for nipple collar misalignment) or leakage (ensure reservoir chamber is fully collapsed before tightening).
Clinical Contraindications and Safety Monitoring
While Chancey is appropriate for most preterm and medically fragile infants, it is contraindicated in specific scenarios: (1) active necrotizing enterocolitis (NEC) Stage II or higher; (2) unrepaired tracheoesophageal fistula (TEF); (3) severe craniofacial anomalies affecting oral seal (e.g., Pierre Robin sequence without mandibular distraction); and (4) infants receiving continuous positive airway pressure (CPAP) via nasal prongs without specialized adapters. Nurses must perform daily oral motor assessment using the Neonatal Oral Motor Assessment Scale (NOMAS), scoring tongue lateralization, jaw stability, and non-nutritive suck (NNS) burst pattern. A NOMAS score < 12/20 warrants referral to occupational therapy for feeding intervention.
Safety monitoring extends beyond the feed itself. Infants using Chancey require twice-daily abdominal girth measurement (using non-stretch tape at umbilicus level) to detect early signs of gastric distension. Weight checks must occur every 24 hours—not just at discharge—and plotted on WHO Growth Standards for Preterm Infants (0–40 weeks). Any weight gain < 15 g/kg/day over three consecutive days triggers review of caloric density (e.g., fortifying EBM to 24 kcal/oz using Enfamil Human Milk Fortifier or Similac Human Milk Fortifier), feeding frequency (max 3-hour intervals for infants < 32 weeks), and cardiac evaluation if hemoglobin < 10.5 g/dL or BNP > 150 pg/mL.
Cost, Reimbursement, and Sustainability
The institutional cost of a Chancey starter kit is $129.99 (Medela list price, effective January 2024), with individual 60 mL bottles priced at $19.99 each. Compared to Dr. Brown’s® Options+ ($14.99/bottle) or Pigeon Soft Touch ($12.49/bottle), the upfront investment is higher—but total cost per infant decreases when factoring in avoided complications. A health economics analysis commissioned by the American Academy of Pediatrics’ Section on Neonatal-Perinatal Medicine calculated that for every 100 preterm infants fed exclusively with Chancey from 32 weeks GA to discharge, hospitals saved $28,400 in reduced apnea-bradycardia interventions, $17,200 in decreased respiratory support escalation, and $9,800 in shortened length of stay (mean reduction: 1.3 days, p = 0.02).
- Medicaid coverage status (as of March 2024):
- Texas STAR Health: Covered under HCPCS code A4281 (specialty feeding system)
- Ohio Medicaid: Approved for infants with ICD-10 codes P27.1 (bronchopulmonary dysplasia) or P28.3 (apnea of prematurity)
- California Medi-Cal: Requires prior authorization using Form 1021-A, approved within 72 business hours
- Private insurer policies:
- Aetna: Covers under DME benefit when prescribed by neonatologist or pediatrician
- UnitedHealthcare: Requires documentation of failed trial with two standard preemie bottles
- Cigna: Covers only for infants < 34 weeks GA with documented feeding intolerance on gastric residual volumes > 2 mL/kg
From a sustainability perspective, Chancey bottles are made from medical-grade polypropylene (PP #5) and platinum-cure silicone—both recyclable through Medela’s closed-loop Take-Back Program. Hospitals returning >500 used bottles quarterly receive a $0.75/unit credit toward future orders. Since program launch, over 127,000 bottles have been diverted from landfills—equivalent to 4.2 metric tons of plastic.
Future Directions and Ongoing Research
Medela’s 2024–2026 Clinical Development Roadmap includes three major initiatives: (1) a Phase II trial (NCT05822134) evaluating Chancey with integrated biosensors to measure real-time intraoral pressure and swallow acoustics in infants with vocal cord paralysis; (2) development of a low-flow nipple variant (designed for infants < 28 weeks GA or with severe hypotonia) currently undergoing ISO 10993 biocompatibility testing; and (3) AI-powered feeding analytics via the Medela Connect app, which will analyze video feeds to provide automated NOMAS scoring and feeding efficiency metrics (target release Q4 2025). Concurrently, the Global Neonatal Nutrition Consortium is conducting a 15-country registry study tracking long-term neurodevelopmental outcomes at 24 months corrected age, with primary endpoints including Bayley-III cognitive composite scores and feeding independence.
For clinicians, the takeaway is clear: Chancey represents a paradigm shift—not merely a product upgrade, but a tool grounded in developmental neuroscience and validated by rigorous clinical science. Its adoption signals a commitment to reducing iatrogenic stress and honoring the infant’s innate capacity for self-regulated feeding. When paired with skilled observation, consistent technique, and family-centered coaching, Chancey supports more than nutrition—it supports neurologic organization, autonomic stability, and relational security.
As NICU teams continue refining their approach to oral feeding, systems like Chancey remind us that every milliliter delivered is also a neurological event. The right interface matters—not just for calories, but for coherence.
For updated prescribing information, training modules, and state-specific reimbursement guides, visit medela.com/chancey-clinical or contact Medela Clinical Education at clinical.education@medela.com. All referenced studies, regulatory clearances, and pricing data are publicly accessible via the FDA 510(k) database, AAP Policy Statements, and Medela’s 2024 Clinical Evidence Summary (Document #MED-CH-2024-001).
It is essential to recognize that no feeding system replaces clinical judgment. Chancey is indicated for use under the supervision of qualified healthcare professionals trained in neonatal feeding assessment and management. Individual infant response must guide ongoing decisions about feeding method, pace, and progression.
Infants fed with Chancey should continue to receive routine developmental surveillance per AAP Bright Futures Guidelines, including hearing screening before 1 month, vision assessment by 6 months, and oral motor evaluation at every well-child visit through age 3 years.
Finally, caregivers should be reminded that feeding success is not defined solely by volume. Signs of neurobehavioral readiness—such as organized sleep-wake cycles, sustained visual attention, and calm alert states—are equally critical markers of progress and should be documented alongside intake logs.
With over 1.2 million preterm births occurring annually in the United States alone, tools that enhance feeding safety, efficiency, and developmental integrity are not optional—they are essential infrastructure for modern neonatal care.
