99-19530. Obstetrics and Gynecology Devices; Reclassification of Home Uterine Activity Monitor  

  • [Federal Register Volume 64, Number 146 (Friday, July 30, 1999)]
    [Notices]
    [Pages 41435-41440]
    From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
    [FR Doc No: 99-19530]
    
    
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    DEPARTMENT OF HEALTH AND HUMAN SERVICES
    
    Food and Drug Administration
    [Docket No. 97P-0350]
    
    
    Obstetrics and Gynecology Devices; Reclassification of Home 
    Uterine Activity Monitor
    
    AGENCY: Food and Drug Administration, HHS.
    
    ACTION: Notice of panel recommendation.
    
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    SUMMARY: The Food and Drug Administration (FDA) is announcing for 
    public comment the recommendation of the Obstetrics and Gynecology 
    Devices Panel (the Panel) to reclassify the home uterine activity 
    monitor (HUAM) from class III to class II. The Panel made this 
    recommendation after reviewing the reclassification petition submitted 
    by Corometrics Medical Systems, Inc., and other publicly available 
    information. FDA also is announcing for public comment its tentative 
    findings on the Panel's recommendation. After considering any public 
    comments on the Panel's recommendation and FDA's tentative findings, 
    FDA will approve or deny the reclassification petition by order in the 
    form of a letter to the petitioner. FDA's decision on the 
    reclassification petition will be announced in the Federal Register. 
    Elsewhere in this issue of the Federal Register, FDA is publishing a 
    notice of availability of a guidance document that provides 510(k) 
    applicants with specific directions regarding data and information that 
    should be submitted to FDA in 510(k) submissions for HUAM's.
    
    DATES: Written comments by October 28, 1999.
    
    ADDRESSES: Submit written comments to the Dockets Management Branch 
    (HFA-305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, 
    Rockville, MD 20852.
    
    FOR FURTHER INFORMATION CONTACT: Colin M. Pollard, Center for Devices 
    and Radiological Health (HFZ-470), Food and Drug Administration, 9200 
    Corporate Blvd., Rockville, MD 20850, 301-594-1180.
    
    SUPPLEMENTARY INFORMATION:
    
    I. Background (Regulatory Authorities)
    
        The Federal Food, Drug, and Cosmetic Act (the act) (21 U.S.C. 301 
    et. seq.), as amended by the Medical Device Amendments of 1976 (the 
    1976 amendments) (Public Law 94-295), the Safe Medical Devices Act of 
    1990 (the SMDA) (Public Law 101-629), and the Food and Drug 
    Administration Modernization Act of 1997 (FDAMA) (Public Law 105-115), 
    established a comprehensive system for the regulation of medical 
    devices intended for human use. Section 513 of the act (21 U.S.C. 360c) 
    established three categories (classes) of devices, depending on the 
    regulatory controls needed to provide reasonable assurance of their 
    safety and effectiveness. The three categories of devices are class I 
    (general controls), class II (special controls), and class III 
    (premarket approval).
        Under section 513 of the act, devices that were in commercial 
    distribution before May 28, 1976 (the date of enactment of the 1976 
    amendments), generally referred to as preamendments devices, are 
    classified after FDA has: (1) Received a recommendation from a device 
    classification panel (an FDA advisory committee); (2) published the 
    panel's recommendation for comment, along with a proposed regulation 
    classifying the device; and (3) published a final regulation 
    classifying the device. FDA has classified most preamendments devices 
    under these procedures.
        Devices that were not in commercial distribution prior to May 28, 
    1976, generally referred to as postamendments devices, are classified 
    automatically by statute (section 513(f) of the act) into class III 
    without any FDA rulemaking process. Those devices remain in class III 
    and require premarket approval, unless and until the device is 
    reclassified into class I or II or FDA issues an order finding the 
    device to be substantially equivalent, under section 513(i) of the act, 
    to a predicate device that does not require premarket approval. The 
    agency determines
    
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    whether new devices are substantially equivalent to previously offered 
    devices by means of premarket notification procedures in section 510(k) 
    of the act (21 U.S.C. 360(k)) and 21 CFR part 807 of the regulations.
        A preamendments device that has been classified into class III may 
    be marketed, by means of premarket notification procedures, without 
    submission of a premarket approval application (PMA) until FDA issues a 
    final regulation under section 515(b) of the act (21 U.S.C. 360e(b)) 
    requiring premarket approval.
        Reclassification of classified postamendments devices is governed 
    by section 513(f)(2) of the act. This section provides that FDA may 
    initiate the reclassification of a device classified into class III 
    under section 513(f)(1) of the act, or the manufacturer or importer of 
    a device may petition the Secretary of Health and Human Services (the 
    Secretary) for the issuance of an order classifying the device in class 
    I or class II. FDA's regulations in Sec. 860.134 (21 CFR 860.134) set 
    forth the procedures for the filing and review of a petition for 
    reclassification of such class III devices. In order to change the 
    classification of the device, it is necessary that the proposed new 
    class have sufficient regulatory controls to provide reasonable 
    assurance of the safety and effectiveness of the device for its 
    intended use.
        Under section 513(f)(2)(B)(i) of the act, the Secretary may, for 
    good cause shown, refer a petition to a device classification panel. 
    The Panel shall make a recommendation to the Secretary respecting 
    approval or denial of the petition. Any such recommendation shall 
    contain: (1) A summary of the reasons for the recommendation, (2) a 
    summary of the data upon which the recommendation is based, and (3) an 
    identification of the risks to health (if any) presented by the device 
    with respect to which the petition was filed.
    
    II. Regulatory History of the Device
    
    A. Preamendments Devices
    
        Before enactment of the 1976 amendments, tokodynamometers, 
    integrated into electronic perinatal monitoring systems, were in 
    commercial distribution. A tokodynamometer is a transducer and 
    monitoring system used to make continuous external (abdominal) 
    measurements of intrauterine pressure and provide strip chart tracings 
    of the uterine contractions of a pregnant woman during labor. 
    Preamendments perinatal monitors were marketed as systems for use in 
    clinical settings, with different models for the office or hospital, 
    and intended for clinical evaluation of the fetus and mother. In 1980, 
    FDA classified these preamendments monitors (external uterine 
    contraction monitor (21 CFR 884.2720) and perinatal monitoring system 
    (21 CFR 884.2740) into class II.
    
    B. Premarket Notifications
    
        Between 1984 and 1987, FDA reviewed 510(k)'s for several HUAM's and 
    found these HUAM's to be substantially equivalent to tokodynamometers 
    used in clinical settings. HUAM manufacturers were permitted to market 
    these devices for use in ``low risk at-term'' pregnancies. However, FDA 
    determined that use of the HUAM for ``the early detection of preterm 
    labor (PTL) in high risk patients'' constituted a new intended use. For 
    this new use, FDA determined that the HUAM was not substantially 
    equivalent to any preamendments class I, class II, or class III device 
    not subject to an approved PMA, or to any postamendments device that 
    had been classified into class I or class II for the early detection of 
    PTL. Accordingly, FDA advised HUAM manufacturers that the device was 
    classified into class III under section 513(f)(1) of the act, and that 
    it could not be placed in commercial distribution for early detection 
    of PTL in high risk patients unless it was reclassified under section 
    513(f)(2), or subject to an approved PMA under section 515 of the act.
    
    C. PMA Reviews and Related Issues
    
        Subsequent to 1987, several PMA's for HUAM's were submitted to FDA 
    and referred to the Panel for its recommendations.
        On May 26, 1988, the first PMA the Panel considered was the Tokos' 
    Term GuardTM device. The Panel recommended that this PMA not 
    be approved because the supporting data did not show the individual 
    contribution the monitor made to the early detection of PTL, over and 
    above that attributable to the regimen of daily patient contact (Ref. 
    1).
        On March 6, 1989, the Panel reviewed a PMA submitted by Healthdyne, 
    Inc., for its System 37TM HUAM and recommended that the PMA 
    be found not approvable because the primary study endpoint (physician 
    intervention) was considered too subjective and the study lacked a 
    control group (Ref. 2).
        On January 18 and April 4, 1990, the Panel reviewed a PMA submitted 
    by Physiological Diagnostic Systems, Inc., for its GenesisTM 
    HUAM. This PMA was supported by a randomized controlled clinical study 
    that demonstrated the individual contribution of the monitor to the 
    early detection of PTL, as evidenced by cervical dilation at the time 
    of PTL diagnosis. These data, within the study, were compared with the 
    standard care for high risk patients without monitoring. On the basis 
    of this data, the Panel recommended approval of the 
    GenesisTM HUAM for the early detection of PTL in only one 
    high risk patient group (Refs. 3 and 4). Subsequently, on September 12, 
    1990, FDA approved a PMA for the GenesisTM HUAM. This HUAM 
    is indicated for use, in conjunction with standard high risk care, for 
    the daily at-home measurement of uterine activity in pregnancies 
    24 weeks gestation for women with a history of previous 
    preterm birth. With the GenesisTM system, uterine activity 
    is displayed at a remote location to aid in the early detection of PTL, 
    as evidenced by cervical dilation at the time of PTL diagnosis (Ref. 
    5).
        On June 11, 1990, the Panel reviewed a new PMA from Healthdyne for 
    its System 37TM HUAM. Healthdyne submitted new data and 
    claimed that the System 37TM would identify women, already 
    known to be a high risk for PTL, who were at an even higher risk of 
    preterm birth. The Panel recommended that this PMA not be approved 
    because of inherent study design flaws. In particular, the outcome 
    variable (incidence of preterm birth) had significant intra and 
    interobserver variation, and the study entry criteria were biased (Ref. 
    6).
        On April 29 and 30, 1993, the Panel reviewed a PMA for the DT 100-P 
    HUAM manufactured by Advanced Medical Systems. This HUAM system was 
    indicated for the early detection of PTL in women with twin gestations. 
    The Panel reviewed the PMA and recommended that the PMA be found not 
    approvable because all the key clinical data came from only one site 
    and because significant engineering questions regarding the monitoring 
    system were unanswered.
        The Panel also considered several FDA prepared questions on the 
    interpretation of clinical study findings supporting other PMA's under 
    review. In addition, the Panel addressed certain issues relative to the 
    existing draft guidance document entitled ``Premarket Testing 
    Guidelines for Home Uterine Activity Monitors'' (March 31, 1993). 
    Issues discussed included: (1) The use of a random sample of examiners 
    to address intra and interobserver variance; (2) the use of a standard 
    definition for the terms ``preterm labor'' and ``standard of care for 
    high risk patients''; (3) limiting study inclusions
    
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    to a minimum gestational age of 20 weeks; and (4) allowing the use of 
    subgroup analysis, except for the purpose of making promotional claims. 
    The Panel also noted the importance of blinding procedures for patients 
    and investigators, but did not go so far as to identify it as a 
    requirement.
        During the April 1993 meeting, the Panel stressed that FDA should 
    look at how the HUAM device is promoted and how often it is used for 
    indications for which it is not approved in the context of postapproval 
    studies or annual reporting (Ref. 7). Also, during this meeting, FDA 
    informed the industry that in light of the many published studies on 
    HUAM's, the devices were a good candidate for reclassification and 
    invited them to petition FDA for a change in classification of the 
    devices.
        During the Panel meeting of September 2, 1994, FDA sought 
    additional guidance regarding clinical review issues on HUAM PMA's. The 
    Panel reconsidered whether cervical dilation at the time of PTL 
    diagnosis should remain the primary clinical endpoint. Alternative 
    endpoints were discussed and despite the difficulties and imperfections 
    of using cervical dilation, the Panel concluded that this endpoint 
    should remain an acceptable alternative for HUAM efficacy studies (Ref. 
    8).
        During the Panel meeting of April 24, 1995 (Ref. 9), Caremark, 
    Inc., presented the clinical efficacy study results for its First 
    Activity HUAM. The study included design elements 
    specifically recommended and preferred by the Panel, including a sham 
    control. When compared to standard clinical care for high risk 
    patients, the study showed no added benefit when using an HUAM for 
    either early PTL detection or reduced preterm births. These findings 
    did not persuade the Panel to change its earlier recommendations 
    regarding acceptable elements of study designs.
        On September 29, 1995, FDA approved PMA's for Healthdyne's System 
    37TM and CareLink Corp.'s CareFoneTM HUAM's, for 
    the same indication as the GenesisTM HUAM; i.e., in 
    conjunction with standard high risk care, the HUAM was approved for the 
    daily at-home measurement of uterine activity in pregnancies, 
    24 weeks gestation, for women with a history of previous 
    preterm birth. The uterine activity of these devices is also displayed 
    at a remote location to aid in the early detection of PTL.
    
    D. Reclassification Petition
    
        On August 15, 1997, FDA received a petition from Corometrics 
    Medical Systems, Inc., for its Model 770 BMS HUAM system requesting FDA 
    to reclassify the HUAM system from class III to class II under section 
    513(f)(2) of the act and Sec. 860.134, based on information submitted 
    in the petition (Ref. 10).
        Consistent with the act and the regulation, FDA referred the 
    petition to the Panel for its recommendation on the requested change in 
    classification.
    
    III. Device Description
    
        A home uterine activity monitor is an at-home monitoring system 
    that consists of a tocotransducer and abdominal belt, an at-home 
    recorder/memory system, a telephone data transmitter (at-home modem), 
    and a separate data receiving, storage, and display system that is 
    located, remote from the home, in a clinical setting (data receiving 
    center). The device is intended to be used on women with a previous 
    preterm delivery to aid in the detection of PTL.
        At home, per instructions by the obstetrician, a pregnant woman 
    secures the tocotransducer around her abdomen for a specified duration 
    and frequency. Uterine muscular distention (tone) changes, indirectly 
    detected by the tocotransducer, are recorded and stored in the 
    recorder/memory. Either immediately after recording or at a later time, 
    the uterine activity data is transmitted via the modem to the data 
    receiving center for clinical evaluation.
        The receiving center has a computerized system with specialized 
    software to receive, store, and display the uterine activity data for 
    clinical evaluation at the remote clinical site. Based on the 
    evaluation of the uterine activity tracing, the patient is referred to 
    her obstetrician for further followup to determine whether she has 
    started PTL.
    
    IV. Recommendations of the Panel
    
        In a public meeting on October 7, 1997, the Panel unanimously 
    recommended that the HUAM be reclassified from class III to class II 
    for use in early detection of PTL, as evidenced by cervical dilation at 
    PTL diagnosis, for women with a previous history of preterm birth 
    (Refs. 11 and 12). The Panel believed that class II with special 
    controls of patient registries, bench testing, consensus standards, and 
    clinical validation studies would provide reasonable assurance of the 
    safety and effectiveness the device.
    
    V. Risks to Health
    
        During its review and discussion of the proposed reclassification 
    of the HUAM, the Panel identified certain risks to health they believed 
    were associated with use of the HUAM. The risks were identified as : 
    (1) Off-label use; (2) initiation of a cascade of interventions 
    including bed rest, hospitalization, and medications; and (3) 
    disabilities and psychological concerns, such as quality of life 
    issues. The Panel had other concerns they believed were hazards to 
    health. They identified the specific hazards as needless exposure to 
    tocolytics and steroids resulting from detection of clinically 
    meaningless contractions, alterations in quality of life from false 
    positives, and inability to identify contractions because of a failure 
    of the transducer to be sensitive and specific.
        After considering the discussion by the Panel during the 
    reclassification proceedings, reviewing the reclassification petition, 
    medical device reports, and published literature, FDA identified the 
    following risks it believed are associated with use of the HUAM when 
    used in early detection of PTL, as evidenced by cervical dilation at 
    PTL diagnosis, for women with a history of previous preterm birth:
    
    A. Electric Shock and/or Injury
    
        HUAM's are electrically powered devices which can cause electrical 
    shock to the patient or clinician, leading to injury or death. This 
    potential risk is well understood, and it can be mitigated by 
    appropriate system design such as sufficient electrical isolation and 
    other safety measures in accordance with applicable consensus 
    standards.
    
    B. Skin Irritation and Sensitization
    
        HUAM's have accessories that make contact with the skin, namely, 
    the tocotransducer and abdominal belt. Any material that comes in 
    contact with the skin has the potential for causing skin irritation and 
    sensitization. This risk can be lessened, if it occurs, by a consensus 
    standard for material safety.
    
    C. Unnecessary Evaluation and Treatment
    
        Unnecessary evaluation and treatment may result from an imprecise 
    definition of PTL or failure of an HUAM to accurately depict uterine 
    activity. Diagnosis of PTL is often difficult, and many times can only 
    be confirmed retrospectively by the preterm delivery. Nonetheless, the 
    consequences of preterm delivery can be devastating in terms of 
    neonatal morbidity and mortality. There is a concern that the use of an 
    HUAM system can cause unnecessary visits to the clinic which could, in 
    turn, lead to over-diagnosis of PTL and unnecessary treatment with 
    tocolytics for women who have increased uterine activity but are not 
    destined for preterm delivery. Improper device design or a 
    malfunctioning
    
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    device can also result in an apparent increase in uterine activity and 
    unnecessary clinical visits, thereby leading to unnecessary treatment 
    with tocolytic agents intended to stop or slow labor.
    
    D. Disabilities and Psychological Issues
    
        Physical disabilities and psychological burdens may result from the 
    clinical management of women diagnosed with PTL. For example, the use 
    of some tocolytic agents sometimes causes temporary or permanent injury 
    to the mother. Moreover, the HUAM regimen coupled with a tocolysis 
    regimen can significantly disrupt a woman's pregnancy and her quality 
    of life. Nonetheless, it is noted that a high risk pregnancy is often 
    psychologically debilitating to the patient, and tocolytics may be 
    prescribed for unmonitored women as well.
    
    E. Other Risks From Use in Unproven Patient Populations
    
        HUAM's have only been approved for use on women who have had a 
    previous preterm delivery. The overuse of HUAM's for other indications, 
    i.e., PTL in the current pregnancy, multiple gestations, etc., were 
    expressed concerns of the Panel. The clinical utility for these other 
    indications has not been proven.
    
    VI. Benefits
    
        HUAM's provide a benefit to high risk patients by helping to detect 
    PTL at an early stage, as evidenced by cervical dilation, thereby 
    allowing for early management of PTL. Early detection of PTL increases 
    the likelihood of successful tocolysis, leading hopefully to the 
    ultimate benefit of fewer preterm births and lower infant mortality and 
    premature births. However, because this is only a monitoring device, 
    FDA has required HUAM manufacturers to show that the devices provide 
    contraction information that contributes to the diagnosis of PTL. 
    Manufacturers are not required to show a reduction in the outcome 
    measures because they are a result of successful intervention after 
    diagnosis.
        HUAM technology is well-established with a long history of safe use 
    at home and in the clinical setting. HUAM device design does not vary 
    substantially from manufacturer to manufacturer in terms of underlying 
    technology and clinical performance. Specific design choices are not 
    expected to affect the risk to the patient. Therefore, FDA believes 
    that randomized controlled clinical studies intended to show early PTL 
    detection are no longer necessary and that the special controls 
    described in section IX of this document would provide reasonable 
    assurance of the safety and effectiveness of the device.
    
    VII. Summary of Reasons for Recommendation
    
        After reviewing the data and information contained in the petition 
    and provided by FDA, and after consideration of the open discussions 
    during the Panel meetings and the Panel members' personal knowledge of 
    and clinical experience with the device, the Panel gave the following 
    reasons in support of its recommendation to reclassify the generic type 
    HUAM for use, in conjunction with standard high risk care, in the daily 
    at-home measurement of uterine activity in pregnancies 24 
    weeks gestation for women with a history of previous preterm birth from 
    class III into class II:
        1. The Panel believes that general controls by themselves are not 
    sufficient to provide reasonable assurance of safety and effectiveness.
        2. The Panel believes that the HUAM should be reclassified into 
    class II because special controls, in addition to general controls, 
    provide reasonable assurance of the safety and effectiveness of the 
    device, and there is sufficient information to establish special 
    controls to provide such assurance.
    
    VIII. Summary of Data Upon Which the Panel Recommendation is Based
    
        The Panel considered a large number of published clinical studies 
    ranging in size, control, study population, and outcome measures (Ref. 
    10). Statistical analyses of various studies were also considered. The 
    Panel believed that these studies, as an aggregate, established the 
    effectiveness of HUAM's, and qualified their effectiveness as an 
    adjunctive tool for monitoring high risk pregnancies. At least one 
    study showed that when HUAM's are used in combination with daily 
    nursing care, PTL can be detected earlier than it is detected by the 
    standard clinical management of patients at high risk for PTL (Ref. 
    12). Other studies showed that when used without daily nursing contact, 
    HUAM's detected PTL earlier (as evidenced by cervical dilation at the 
    time of PTL diagnosis) than standard clinical care of a select patient 
    populations (Refs. 5 and 14). On the other hand, some controlled 
    studies showed that, for high risk populations, HUAM's do not 
    contribute to PTL detection rate or a reduction in preterm deliveries 
    when used with daily nursing contact (Refs. 15 and 16). Some studies 
    evaluated HUAM's for managing pregnant women who were at risk for 
    preterm birth for other reasons, e.g., multiple gestation and PTL in 
    the current pregnancy (Refs. 5, 12, 13, 14, 15, and 16). The Panel did 
    not evaluate the evidence for these indications.
        Most of the risks associated with HUAM's identified by the Panel 
    were indirect effects attributable to incorrect monitoring information 
    or misinterpretation of monitoring information leading to misdiagnosis. 
    The concern that the use of the device would result in an increase in 
    the number of hospital visits and use of tocolytics was not borne out 
    in the published literature. The potential risk of misdiagnosis is one 
    that is generally mitigated by proper training, adequate labeling, and 
    limited use of the device by the clinician.
        Based on the available information, FDA believes that the special 
    controls discussed in section IX of this document are capable of 
    providing reasonable assurance of the safety and effectiveness of the 
    HUAM with regard to the identified risks to health of this device.
    
    IX. Special Controls
    
        In addition to general controls, FDA believes that the special 
    controls (patient registries and guidance document) discussed in this 
    section are adequate to control the risks to health described for this 
    device. Elsewhere in this issue of the Federal Register, FDA is 
    publishing a notice of availability of a guidance document entitled 
    ``Home Uterine Activity Monitors: Guidance for the Submission of 510k 
    Premarket Notifications'' that provides 510(k) applicants with specific 
    directions regarding data and information that should be submitted to 
    FDA in 510(k) submissions for HUAM's.
    
    A. Patient Registries
    
        The rationale for using patient registries is that it provides a 
    means for characterizing the nature of the patient population for which 
    the device is actually used and to track information about the labor 
    and delivery of women for whom the device was prescribed. FDA believes 
    that using patient registries, in a structured sampling format, will 
    provide outcome data that will contribute to appropriate use of the 
    device.
    
    B. Guidance Document (Home Uterine Activity Monitors: Guidance for the 
    Submission of Premarket Notifications)
    
        This document incorporates: (1) The consensus standards from 
    professional organizations to provide uniformity, (2) bench testing and 
    validation study information to validate the effectiveness and 
    performance of the device, and (3)
    
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    labeling to describe the device's capabilities and discourage off-label 
    use.
    1. Bench Testing
        Bench testing can validate the ability of the HUAM to operate 
    (independently or in combination with clinical validation studies) as 
    intended, i.e., to collect, store, and transmit data. Bench testing can 
    also address the risk of false positives and the resulting 
    inappropriate management of the patient. Appropriately designed bench 
    testing will ensure that uterine activity, and contractions in 
    particular, are accurately measured and displayed by the device, 
    thereby minimizing false positives associated with the device.
    2. Consensus Standards
        The International Electrotechnical Commission (IEC) standards 601-1 
    for medical electrical equipment and 601-1-2 for general safety 
    identify the electrical safety and electromagnetic compatibility 
    aspects for any type electrical device. Adherence to these standards 
    can control the risks of electrical shock and/or injury to the patient 
    and clinician. Copies of these standards may be obtained from IEC, AT3, 
    Rue de Varembe, P.O. Box 131, Geneva, Switzerland, CH-1211. IEC also 
    maintains a site on the world wide web at ``http://www.iec.ch''. 
    Testing in accordance with any of a variety of material safety 
    consensus standards, such as ISO-10993, Biological Evaluation of 
    Medical Devices, Part 1: Evaluation and Testing, can minimize the risks 
    of skin irritation and sensitization caused by the tocotransducer and 
    abdominal belt. Copies of this and other material safety standards may 
    be obtained from International Organization for Standardization, Case 
    Postal, Geneva, Switzerland, CH-1121. ISO also maintains a site on the 
    World Wide Web at ``http://www.iso.org''.
    3. Clinical Validation Study
        The rationale for using a clinical validation study is to address 
    the risk of false positives and the resulting inappropriate management 
    of the patient. The objective of this limited clinical validation study 
    is to address the remaining performance issues of the device, namely, 
    the recording and data transmission functions that cannot be addressed 
    via bench testing. The system should be tested in a small clinical 
    study, in its intended setting with actual subjects. The study 
    endpoints should address the readability of the received tracings, 
    i.e., are the contractions correctly perceived by the clinician. The 
    outcome of a limited clinical validation study would address and 
    possibly mitigate the risk of unnecessary evaluation and treatment of 
    the patient.
    4. Labeling Requirements
        Labeling addresses the risk of use of the device in unproved 
    patient populations. Diagnosis of PTL is often difficult, and many 
    times can only be confirmed retrospectively by the actual preterm 
    delivery. Yet, the consequences of preterm delivery can be devastating 
    in terms of neonatal morbidity and mortality. An HUAM system that 
    causes additional visits to a clinic could lead to over-diagnosis of 
    PTL and unnecessary treatment with tocolytics for women who have 
    increased uterine activity but are not destined for preterm delivery. 
    Labeling should provide an accurate description of the device's 
    capabilities and discourage the off-label use of the device and limit 
    the perpetuation of false claims of the device's capabilities.
        FDA believes labeling which describes the capabilities and 
    limitations of the HUAM system device can lead to a more informed use 
    of this technology by the clinician, thereby mitigating the risks of 
    unnecessary evaluations and treatments, disabilities, and psychological 
    issues.
    
    X. FDA's Tentative Findings
    
        The Panel and FDA believe that the HUAM should be classified into 
    class II because special controls, in addition to general controls, 
    would provide reasonable assurance of the safety and effectiveness of 
    the device, and there is sufficient information to established special 
    controls to provide such assurance.
    
    XI. References
    
        The following references have been placed on display in the Dockets 
    Management Branch (address above) and may be seen by interested persons 
    between 9 a.m. and 4 p.m., Monday through Friday:
        1. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, May 26, 1988.
        2. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, March 6, 1989.
        3. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, January 18, 1990.
        4. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, April 4, 1990.
        5. Mou, S. M. et al., ``Multicenter Randomized Clinical Trial of 
    Home Uterine Activity Monitoring for Detection of Preterm Labor,'' 
    American Journal of Obstetrics and Gynecology, 165(4)1:858-866, 
    1991.
        6. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, June 11, 1990.
        7. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, April 29 and 30, 1993.
        8. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, September 2, 1994.
        9. Obstetrics and Gynecology Devices Panel Meeting, Summary 
    Minutes, April 24, 1995.
        10. Reclassification Petition Submitted by Corometrics Medical 
    Systems, Inc., June 5, 1997.
        11. Obstetrics and Gynecology Devices Panel Meeting, Transcript, 
    October 7, 1997.
        12. Hill, W. C. et al., ``Home Uterine Activity Monitoring is 
    Associated With a Reduction in Preterm Birth,'' Obstetrics and 
    Gynecology, 76 (1 Supplement):13s-18s, 1990.
        13. Dyson, D. C. et al., ``Prevention of Preterm Birth in High 
    Risk Patients: The Role of Education and Provider Contact versus 
    Home Monitoring,'' American Journal of Obstertics and Gynecology, 
    164(3):756-762, 1991.
        14. Wapner, R. J. et al., ``A Randomized Multicenter Trial 
    Assessing a Home Uterine Activity Monitoring Device Used in the 
    Absence of Daily Nursing Contact,'' American Journal of Obstetrics 
    and Gynecology, 172(3):1026-1034, 1995.
        15. Blondel, B. et al., ``Home Uterine Activity Monitoring in 
    France: A Randomized, Controlled Trial,'' American Journal of 
    Obstetrics and Gynecology, 167(2):424-429, 1992.
        16. Iams, J. D., F. F. Johnson, and R. W. O-Shaughnessy, ``A 
    Prospective Random Trial of Home Uterine Activity Monitoring in 
    Pregnancies at Increased Risk of Preterm Labor, Part II,'' American 
    Journal of Obstetrics and Gynecology, 150(3):595-603, 1988.
    
    XII. Environmental Impact
    
        The agency has determined under 21 CFR 25.34(b) that this 
    reclassification action is of a type that does not individually or 
    cumulatively have a significant effect on the human environment. 
    Therefore, neither an environmental assessment nor an environmental 
    impact statement is required.
    
    XIII. Analysis of Impacts
    
        FDA has examined the impacts of the notice under Executive Order 
    12866 and the Regulatory Flexibility Act (5 U.S.C. 601-612) (as amended 
    by subtitle D of the Small Business Regulatory Fairness Act of 1996 
    (Public Law 104-121), and the Unfunded Mandates Reform Act of 1995 
    (Public Law 104-4)). Executive Order 12866 directs agencies to assess 
    all costs and benefits of available regulatory alternatives and, when 
    regulation is necessary, to select regulatory approaches that maximize 
    net benefits (including potential
    
    [[Page 41440]]
    
    economic, environmental, public health and safety, and other 
    advantages; distributive impacts; and equity). The agency believes that 
    this reclassification action is consistent with the regulatory 
    philosophy and principles identified in the Executive Order. In 
    addition, the reclassification action is not a significant regulatory 
    action as defined by the Executive Order and so is not subject to 
    review under the Executive Order.
        The Regulatory Flexibility Act requires agencies to analyze 
    regulatory options that would minimize any significant impact of a rule 
    on small entities. Reclassification of the device from class III to 
    class II will relieve manufacturers of the cost of complying with the 
    premarket approval requirements in section 515 of the act. Because 
    reclassification will reduce regulatory costs with respect to this 
    device, it will impose no significant economic impact on any small 
    entities, and it may permit small potential competitors to enter the 
    marketplace by lowering their costs. The agency therefore certifies 
    that this reclassification action, if finalized, will not have a 
    significant economic impact on a substantial number of small entities. 
    In addition, this reclassification action will not impose costs of $100 
    million or more on either the private sector or State, local, and 
    tribal governments in the aggregate, and therefore a summary statement 
    of analysis under section 202(a) of the Unfunded Mandates Reform Act of 
    1995 is not required.
    
    XIV. Request for Comments
    
        Interested persons may, on or before October 28, 1999, submit to 
    the Dockets Management Branch (address above) written comments 
    regarding this document. Two copies of any comments are to be 
    submitted, except that individuals may submit one copy. Comments are to 
    be identified with the docket number found in brackets in the heading 
    of this document. Received comments may be seen in the office above 
    between 9 a.m. and 4 p.m. Monday through Friday.
    
        Dated: June 30, 1999.
    Linda S. Kahan,
    Deputy Director for Regulations Policy, Center for Devices and 
    Radiological Health.
    [FR Doc. 99-19530 Filed 7-29-99; 8:45 am]
    BILLING CODE 4160-01-F
    
    
    

Document Information

Published:
07/30/1999
Department:
Food and Drug Administration
Entry Type:
Notice
Action:
Notice of panel recommendation.
Document Number:
99-19530
Dates:
Written comments by October 28, 1999.
Pages:
41435-41440 (6 pages)
Docket Numbers:
Docket No. 97P-0350
PDF File:
99-19530.pdf