(556 days)
The SNOO Smart Sleeper bassinet plus the SNOO Sleep Sack are jointly intended to facilitate a supine position during sleep. Infants who are placed in a supine sleep position are at lower risk of SIDS/SUID. The device is intended for home use by caregivers of infants from birth to 6 months of age, who are not yet able to roll over consistently.
The SNOO Smart Sleeper (SNOO) is comprised of the SNOO bassinet and the SNOO Sleep Sack that iointly constitute an infant securement device intended to facilitate a supine position during sleep. The device is intended for home use by caregivers of infants from birth to 6 months of age, who are not yet able to roll over consistently. The SNOO Sleep Sack is a cotton swaddle with fixed wings made of woven cotton fabric that extend to the right and left of the infant's body. Three sizes of sleep sacks (small 5-12lbs, medium 12-18lbs. and large 18-25lbs) are provided with each bassinet to accommodate the growing baby. Small loops at the end of each SNOO Sleep Sack wing are slid over the safety clips of the SNOO bassinet to securely position the swaddled infant on the back. The SNOO Sleep Sack has corresponding wings that are designed to be physically attached to those clips after the baby is wrapped in the sleep sack - thereby keeping the infant securely positioned on the back during sleep and to prevent rolling. The SNOO bassinet also provides sound and motion. White noise and rocking can be automatically increased in response to a baby's cries. There is a SNOO App which can be used to adjust the levels of motion.
The provided text describes the SNOO Smart Sleeper, an infant supine sleep system, and presents information related to its regulatory acceptance. While it details acceptance criteria and study results for various aspects, it does not explicitly provide a "study that proves the device meets the acceptance criteria" in a singular, consolidated way, nor does it present the information in the structured format requested for AI/device performance. The request focuses on AI/device performance metrics (such as sensitivity, specificity, FROC, AUC), which are not directly applicable to this mechanical infant sleep system.
However, I can extract the acceptance criteria and reported "performance" based on the provided text, aligning them as closely as possible to the spirit of the request by interpreting "device performance" as the results of the specific tests conducted.
Here's the information extracted and formatted to best answer your request, focusing on the available data:
Acceptance Criteria and Device Performance for SNOO Smart Sleeper
1. Table of acceptance criteria and the reported device performance
| Test Performed | Acceptance Criteria | Reported Device Performance/Results |
|---|---|---|
| Zipper Durability Test | 500 cycles without any jamming or breaking issues. | PASS |
| Loop Hook & Unhooking | Visual Inspection for deterioration of components after 500 hook and unhook cycles. | PASS |
| Washing Durability Test | Dimension deviates less than 10%, except for safety clip width (<5%). | PASS |
| Velcro Durability Test | Velcro adheres at 360 uses. | PASS |
| Biocompatibility Testing | No cytotoxicity, sensitization, or irritation. | Device passed testing. |
| Electrical Safety & EMC | Compliance with standards: BS EN 61558-1, BS EN 61558-2-16, UL 1310, CAN/CSA C22.2 No. 223, IEC 60601-1-2, CFR 47 FCC Part 15 Subpart B. | Device complies with emission limits and standards. |
| Bassinet & Cradles Standard | Compliance with ASTM F2194-16e1 and 16 CFR 1218. | Device passed testing. |
| Human Factors Validation | Meeting acceptance criteria for scenarios related to unpacking, setup, swaddling, securing, and removal. | Study met acceptance criteria and was deemed acceptable. |
| Supine Position Facilitation | Demonstrate that the device securely holds the infant on the back. | Approximately 98.7% supine sleep position in 1012 users (CI [97.8%, 99.2%]). All observed infants in 93 hours of video remained in a supine position. |
| SIDS/SUID Risk | Not increase the risk of SIDS/SUID in the intended use population. | Did not increase the risk of SIDS/SUID in the study population (based on comparison to CDC WONDER database). However, not of sufficient quality to determine a precise rate or reduction. |
| Adverse Events | Adverse events reported at or below expected rates. | Death, gastroesophageal reflux, plagiocephaly, aspiration, contusion, and dermatitis reported at or below expected rates. |
| Device Degradation | No inappropriate or inadequate securement due to degradation over time. | Use life testing demonstrated a use life of 6 months. (Implied acceptance met by this test). |
2. Sample size used for the test set and the data provenance
- Zipper Durability Test: 10 zippers per batch.
- Loop Hook & Unhooking: 3 SNOO Sacks (1 Small, 1 Medium, 1 Large).
- Washing Durability Test: 10 pieces per batch.
- Velcro Durability Test: 10 pieces per batch.
- Human Factors Validation: 15 test participants.
- Supine Position Facilitation (Quantitative): 1012 users.
- Supine Position Facilitation (Qualitative): 93 hours of video recordings (number of infants not specified, but "all observed infants").
- SIDS/SUID and Adverse Events: 106,723 SNOO users.
Data Provenance:
The clinical data described (supine position, SIDS/SUID, adverse events) were collected in the United States. The study comparing SIDS/SUID incidence used real-world evidence (RWE) for SNOO users compared to historical data from the CDC Wide-ranging Online Data for Epidemiological Research (WONDER) database. This indicates the data for SNOO users is prospective/real-world observational, while the comparative SIDS/SUID data is retrospective/historical.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts
The document does not describe the use of "experts" in the context of establishing ground truth for a test set in the way one would for diagnostic interpretative tasks (e.g., radiologists interpreting images). The "ground truth" for this device's performance is established by:
- Pre-defined engineering and material standards (e.g., ASTM, ISO, IEC, UL).
- Direct observation (e.g., video recordings for supine position).
- User feedback in human factors testing.
- Compilation of real-world adverse event reports.
- Comparison with established epidemiological databases (CDC WONDER).
No specific number or qualification of "experts" for establishing ground truth in the requested sense is mentioned.
4. Adjudication method for the test set
Not applicable in the context of this device. The tests performed are largely objective engineering, material, or observational assessments with pre-defined pass/fail criteria or direct measurement. Human factors testing involved observation of tasks, which would typically involve an evaluator judging successful completion against a rubric, but no specific adjudication method (like 2+1 review) is described.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance
Not applicable. This device is an infant sleep system, not an AI-powered diagnostic tool requiring human reader interpretation or MRMC studies.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done
Not applicable. The SNOO Smart Sleeper is a physical device providing securement, motion, and sound, not an algorithm. Its "performance" in securing infants is a direct physical function. While it has an app and automation features (white noise and rocking in response to cries), the core function evaluated for its regulatory claim is physical securement.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)
The "ground truth" for the various performance aspects can be categorized as:
- Engineering Standards/Measurements: For zipper, loop, washing, Velcro durability, electrical safety, EMC, bassinet standards, biomechanical stability.
- Direct Observation/Video Analysis: For demonstrating supine position facilitation.
- User Performance (Human Factors): For human factors usability.
- Outcomes Data/Epidemiological Comparison: For SIDS/SUID rates and adverse event reporting.
8. The sample size for the training set
Not applicable. This is a physical device; there is no "training set" in the machine learning sense. The device's design and engineering would be based on general engineering principles and possibly iterative testing, but not a formal "training set" like an AI model.
9. How the ground truth for the training set was established
Not applicable, as there is no training set mentioned for this type of device.
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DE NOVO CLASSIFICATION REQUEST FOR SNOO SMART SLEEPER
REGULATORY INFORMATION
FDA identifies this generic type of device as:
Infant supine sleep system. An infant supine sleep system is a device intended to facilitate a supine position during sleep for use in infants that are not yet able to roll over consistently. Infants placed in a supine sleep position are at lower risk of sudden infant death syndrome (SIDS) or sudden unexpected infant death (SUID).
NEW REGULATION NUMBER: 21 CFR 880.5690
CLASSIFICATION: Class II
PRODUCT CODE: OTG
BACKGROUND
DEVICE NAME: SNOO Smart Sleeper
SUBMISSION NUMBER: DEN210039
DATE DE NOVO RECEIVED: September 20, 2021
SPONSOR INFORMATION:
Happiest Baby, Inc. 3115 S. La Cienega Blvd. Los Angeles, California 90016
INDICATIONS FOR USE
The SNOO Smart Sleeper is indicated as follows:
The SNOO Smart Sleeper bassinet plus the SNOO Sleep Sack are jointly intended to facilitate a supine position during sleep. Infants who are placed in a supine sleep position are at lower risk of SIDS/SUID. The device is intended for home use by caregivers of infants from birth to 6 months of age, who are not yet able to roll over consistently.
LIMITATIONS
The SNOO is demonstrated to facilitate a supine position during sleep; however, the SNOO has not directly demonstrated a reduction in the incidence of SIDS/SUID.
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This device is only indicated for use with infants who cannot consistently roll over.
The device is not a substitute for adult supervision.
Do not use this product if the infant can push up on hands and knees, can roll over consistently, or has reached 6 months of age, whichever comes first.
DEVICE DESCRIPTION
The SNOO Smart Sleeper (SNOO) is comprised of the SNOO bassinet and the SNOO Sleep Sack that iointly constitute an infant securement device intended to facilitate a supine position during sleep. The device is intended for home use by caregivers of infants from birth to 6 months of age, who are not yet able to roll over consistently.
The SNOO Sleep Sack is a cotton swaddle with fixed wings made of woven cotton fabric that extend to the right and left of the infant's body. Three sizes of sleep sacks (small 5-12lbs, medium 12-18lbs. and large 18-25lbs) are provided with each bassinet to accommodate the growing baby. Small loops at the end of each SNOO Sleep Sack wing are slid over the safety clips of the SNOO bassinet to securely position the swaddled infant on the back. The SNOO Sleep Sack has corresponding wings that are designed to be physically attached to those clips after the baby is wrapped in the sleep sack - thereby keeping the infant securely positioned on the back during sleep and to prevent rolling.
Image /page/1/Picture/6 description: The image shows a baby swaddled in a white blanket, lying on a black and white patterned surface. The baby is lying on its back, with its head turned to the left. The swaddle is wrapped tightly around the baby's body, with only its head and face visible. The baby appears to be content and relaxed. The black and white patterned surface appears to be a baby lounger.
The SNOO bassinet also provides sound and motion. White noise and rocking can be automatically increased in response to a baby's cries. There is a SNOO App which can be used to adjust the levels of motion.
SUMMARY OF NONCLINICAL/BENCH STUDIES
BIOCOMPATIBILITY/MATERIALS
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The patient-contacting components of the SNOO Smart Sleeper (SNOO) include the SNOO bassinet fitted sheet and the SNOO Sleep Sack. The SNOO bassinet fitted sheet is made of 100% cotton. and the SNOO Sleep Sack is made of 95% cotton and 5% elastane. and features mesh panels made of 100% polyester. Biocompatibility testing was performed on the patient contacting components of the SNOO. Testing included Cytotoxicity testing per ISO 10993-5:2009 Biological evaluation of medical devices -Part 5: Tests for in vitro cytotoxicity, sensitization testing per ISO 10993-10:2010 Biological evaluation of medical devices - Part 10: Tests for irritation and skin sensitization, and irritation testing per ISO 10993-23:2021 Biological Evaluation of Medical Devices, Part 23: Tests for Irritation on the final finished device.
SHELF LIFE
Durability of the SNOO Sleep Sack's zipper and safety loops were evaluated. The effect of washing over the expected lifecycle of the SNOO Sleep Sack and SNOO bassinet fitted sheet was assessed. Use life testing was completed to demonstrate a use life of 6 months.
ELECTROMAGNETIC CAPABILITY & ELECTRICAL SAFETY
Electrical safety testing was performed in accordance with the following standards:
- . BS EN 61558-1 Safety of transformers, reactors, power supply units and combinations thereof - General requirements and tests
- . BS EN 61558-2-16 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-16: Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units for general applications.
- . UL 1310 - Class 2 Power Units CAN/CSA C22.2 No. 223 - Power Supplies with Extra-low Voltage Class 2 Outputs.
Electromagnetic compatibility (EMC) testing was conducted per the FDA Recommended Standard IEC 60601-1-2. The SNOO Smart Sleeper demonstrated that it complies with the emission limits conducted for CISPR 11. Additionally, conducted and radiated emissions testing was performed per CFR 47 FCC Part 15. Subpart B. which included EMC testing to the same frequencies (0.15 MHz- 30MHz) and acceptance limits as IEC 60601-1-2.
PERFORMANCE TESTING - BENCH
The SNOO Smart Sleeper bassinet was tested in accordance with ASTM F2194-16e1 (Standard Consumer Safety Specification for Bassinets and Cradles) and 16 CFR 1218 (Requirements for bassinets and cradles).
The SNOO Sleep Sack was tested as described in the table below.
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| TestPerformed | DeviceDescription /Sample Size | TestMethod | AcceptanceCriteria | Results(PASS/ FAIL) |
|---|---|---|---|---|
| ZipperDurabilityTest | 10 zippers /batch | Open and close the zipper 500 times atan approximate speed of 10cm/sec. | 500 cycles withoutany jamming orbreaking issues. | PASS |
| Loop Hook&Unhooking | 3 SNOOSacks(1 Small.1 Medium,1 Large) | Perform 500 hook and unhook cycleson SNOO Sleep Sack elastic loops tothe safety clips, per the IFUinstructions. | Visual Inspectionfor deterioration ofcomponents after500 hook andunhook cycles. | PASS |
| WashingDurabilityTest | 10 pieces /batch | Utilizing any commercial largewashing machine and householdclothes drying machine, wash and drythe Sleep Sack for 100 cycles. Afterevery 10 cycles, measure thedimensions. | Dimensiondeviates less than10%, except forsafety clip width(<5%). | PASS |
| VelcroDurabilityTest | 10 pieces /batch | After a wash and dry cycle, performopen and close cycles on the hook(male) and loop (female) Velcro strips. | Velcro adheres at360 uses. | PASS |
HUMAN FACTORS USABILITY TESTING
A Human Factors validation study was completed in accordance with the FDA 2016 guidance "Applying Human Factors and Usability Engineering to Medical Devices". The study encompassed a series of scenarios in a simulated use environment that contained tasks related to use of the system by its intended users. The scenarios were tied to the risk analysis process and included user tasks that are typically done when using the system. Fifteen test participants were evaluated on tasks that included unpacking the SNOO, setting up the system, swaddling a baby (doll) in the SNOO Sleep Sack, securing the baby (doll) in the SNOO bassinet, and properly removing the baby (doll) from the device. The validation study met the acceptance criteria and was deemed acceptable.
SUMMARY OF CLINICAL INFORMATION
Happiest Baby provided real world evidence (RWE) showing a rate of supine sleep position of approximately 98.7% in 1012 users (confidence interval [97.8%,99.2%]). In addition, over 93 hours of video recordings showed all observed infants remaining in a supine position during their time in the SNOO. In addition, Happiest Baby provided real-world evidence on 106,723 SNOO users and compared the incidence of reported SIDS/SUID in SNOO users to historical data from the CDC Wide-ranging Online Data for Epidemiological Research (WONDER) database. Although the data was not of sufficient quality to determine a precise SIDS/SUID rate, it did demonstrate that the device did not increase the risk of SIDS/SUID in the study population.
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The following adverse events, including serious adverse events, have been reported at or below expected rates when using the SNOO Smart Sleeper: death, gastroesophageal reflux, plagiocephaly, aspiration, contusion, and dermatitis.
POSTMARKET SURVEILLANCE
The clinical data described above were collected in the United States but did not evaluate the device in a population that is reflective of the entire US population, including the US subpopulations at highest risk of SIDS/SUID. A section 522 postmarket surveillance study will therefore be required to obtain a more comprehensive safety profile of the device by collecting safety data associated with use of the device in US subpopulations at higher risk of SIDS/SUID to determine the rates of serious injury and death for high-risk infants when they use the SNOO Smart Sleeper. Safety data will be collected and provided in updated labeling.
LABELING
The device labeling includes the following:
- On the packaging and in directions for use, a prominent warning that the device has not a. been demonstrated to reduce the risk of SIDS/SUID:
- b. A summary of available clinical data with the device, including a discussion of adverse events:
- c. A warning that the device is only indicated for use with infants who cannot consistently roll over:
- d. The level of supervision necessary to monitor a sleeping infant in the intended use environment:
- e. Recommendations for safe sleep environments;
- f. Instructions and guidelines to ensure proper fit of the infant into the sleep system; and
- g. Instructions for maintaining and reprocessing the device.
RISKS TO HEALTH
The table below identifies the risks to health that may be associated with use of an Infant Supine Sleep System.
Risk and Mitigation Table
| Risk to Health | Mitigation Measures |
|---|---|
| Increased risk of death, including frominadequate securement or inadequatepositioning of the infant | Clinical dataPostmarket surveillanceNon-clinical performance testingLabeling |
| Inappropriate securement leading toInjuries, contusions, or bruising Entrapment | Clinical dataPostmarket surveillanceLabeling |
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| Risk to Health | Mitigation Measures |
|---|---|
| • Respiratory compromise or suffocation• Gastroesophageal reflux• Plagiocephaly (“flat head syndrome”)• Death | |
| Inappropriate or inadequate securement due todevice degradation over time (wear and tear,laundering) | Non-clinical performance testingLabeling |
| Inappropriate use or inadequate securement dueto use error and/or improper fit | Clinical dataHuman factors assessmentLabeling |
| Injury due to unstable device (tipping, rocking,improper placement) | Non-clinical performance testingLabeling |
| Infection | Labeling |
| Adverse tissue reaction (e.g., dermatitis) | Biocompatibility evaluationLabeling |
SPECIAL CONTROLS
In combination with the general controls of the FD&C Act, the infant supine sleep system is subject to the following special controls:
- Premarket clinical information and, as determined by FDA, postmarket surveillance data (1) acquired under anticipated conditions of use must be collected to fulfill the following:
- Demonstrate that the device holds the infant on the back; (i)
- Provide data on adverse events (including deaths and injuries) and malfunctions to (ii) demonstrate the device can be safely used in the intended use population; and
- (iii) Provide data to demonstrate that use of the device does not increase the rate of SIDS/SUID in the intended use population.
- Human factors testing must demonstrate that the user can safely and correctly use the (2) device.
- The patient-contacting components of the device must be demonstrated to be (3) biocompatible.
- (4) Non-clinical performance testing must demonstrate that the device performs as intended under anticipated conditions of use. The following must be conducted:
- (i) Testing to ensure the mechanical and structural stability of the device and demonstrate that the device does not present a tipping hazard due to mechanical failures; and
- Material compatibility testing to demonstrate that the cleaning instructions provided (ii) by the manufacturer do not cause crazing, cracking, or deterioration of the device.
- Labeling must include: (5)
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- (i) Unless clinical performance data demonstrates that it can be removed or modified, a prominent warning that the device has not been demonstrated to reduce the risk of SIDS/SUID. Such warning must appear prominently on all labeling:
- (ii) A summary of available clinical information with the device, including a discussion of adverse events:
- A warning that the device is only indicated for use with infants who cannot (111) consistently roll over;
- (iv) Instructions to ensure proper fit;
- (v) Instructions for cleaning the device; and
- (vi) Information regarding safe sleep practices to ensure the safe use of the device, including:
- (A) Recommendations for safe sleep environments; and
- The level of supervision necessary to monitor a sleeping infant. (B)
BENEFIT-RISK DETERMINATION
The probable benefits of the device are based on clinical data, as described above. The data demonstrated that the SNOO Smart Sleeper secures the infant in a supine position during sleep. Infants who are placed in a supine sleep position are at lower risk of SIDS/SUID (Moon, R. Y .. et al. (2022). "Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment." Pediatrics 150(1).).
The probable risks of the device are also based on clinical data. A securement device that is misused or poorly fitted presents risks to the infant such as entrapment, suffocation, and SIDS/SUID. Plagiocephaly, also known as flat head syndrome, may occur as a result of placement in the supine position for an extended period of time. Gastroesophageal reflux was also observed. These two were the most common risks. Contusion, aspiration and dermatitis were also observed, but to a lesser extent.
The data collected for the SNOO Smart Sleeper did not demonstrate that use of the device decreased the risk of SIDS/SUID, and the device was not extensively studied in infants demographically at highest risk of SIDS/SUID. However, the data did demonstrate that the device could secure an infant on its back. Safe to Sleep guidelines state that placing infants on the back to sleep is associated with lower rates of SIDS/SUID (https://safetosleep.nichd.nih.gov/). The risks reported from the study were well understood and in line with historical data and clinical experience. FDA has determined that while additional data are necessary to further assess the benefits and risks of the device in the most vulnerable infants, the benefits of the device outweigh its risks as studied.
In order to mitigate the risks of a securement device, caregivers should read the directions for use carefully and ensure that the device is used accordingly and with appropriate supervision. Safe to Sleep guidelines continue to recommend that an infant be placed on its back to sleep with no other objects in the crib.
Patient Perspectives
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This submission did not include specific information on patient perspectives for this device.
Benefit/Risk Conclusion
In conclusion, given the available information above, for the following indication statement:
The SNOO Smart Sleeper bassinet plus the SNOO Sleep Sack are jointly intended to facilitate a supine position during sleep. Infants who are placed in a supine sleep position are at lower risk of SIDS/SUID. The device is intended for home use by caregivers of infants from birth to 6 months of age, who are not yet able to roll over consistently.
The probable benefits outweigh the probable risks for the SNOO Smart Sleeper. The device provides benefits and the risks can be mitigated by the use of general controls and the identified special controls.
CONCLUSION
The De Novo request for the SNOO Smart Sleeper is granted and the device is classified as follows:
Product Code: QTG Device Type: Infant supine sleep system Regulation Number: 21 CFR 880.5690 Class: II
N/A