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510(k) Data Aggregation

    K Number
    K213251
    Manufacturer
    Date Cleared
    2021-11-18

    (49 days)

    Product Code
    Regulation Number
    878.3610
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    M.I.Tech Co., Ltd.

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The HANAROSTENT® Esophagus Asymmetric (CCC) is intended for maintaining esophageal luminal patency in esophageal strictures caused by intrinsic and/or extrinsic malignant tumors, and occlusion of concurrent esophageal fistula.

    Device Description

    This self-expanding tubular prosthesis is designed to maintain patency in esophageal strictures caused by intrinsic and/or extrinsic malignant tumors, and occlusion of concurrent esophageal fistulas. It consists of a self-expandable metal stent and a delivery device. The self-expandable metal stent is made of nickel titanium alloy (Nitinol) wire with fully covered silicone membrane, and the delivery device is made of polymeric materials. The stent is loaded into the distal part of the delivery device, and expanded in the body by pulling the outer sheath of the delivery device. The HANAROSTENT® Esophagus Asymmetric (CCC) is intended for single use only.

    AI/ML Overview

    The provided document is a 510(k) summary for the HANAROSTENT® Esophagus Asymmetric (CCC), a device intended for maintaining esophageal luminal patency in esophageal strictures and occlusion of concurrent esophageal fistula. This type of device approval (510(k)) focuses on demonstrating substantial equivalence to a predicate device, rather than proving absolute safety and effectiveness through extensive clinical trials as would be required for a Premarket Approval (PMA).

    Therefore, the "acceptance criteria" and "study that proves the device meets the acceptance criteria" in this context refer to the bench testing performed to demonstrate that the new device is substantially equivalent to existing, legally marketed devices.

    Here's a breakdown of the requested information based on the provided text:

    1. Table of Acceptance Criteria and Reported Device Performance

    The acceptance criteria for a 510(k) device are generally established by comparison to a predicate device and relevant industry standards. For this device, the "acceptance criteria" are implied by the performance tests conducted, with the underlying assumption that the device's performance in these tests is comparable to or acceptable relative to the predicate device. The document does not explicitly state numerical acceptance criteria, but rather lists the types of tests performed to demonstrate substantial equivalence.

    Acceptance Criteria (Implied by Test Type)Reported Device Performance
    ForeshorteningConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    Expansion forceConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    Compression forceConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    Guidewire passageConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    Deployment forceConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    Deploying accuracyConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    DimensionsConfirmed safety and effectiveness as compared to predicate devices via bench testing.
    BiocompatibilityEvaluated as per ISO 10993-1.
    SterilityEvaluated as per relevant guidance.
    Shelf LifeEvaluated as per relevant guidance.

    2. Sample Size Used for the Test Set and Data Provenance

    The document explicitly states: "No animal and clinical performance data is submitted in this 510(k)." The testing performed was "Bench testing." The sample sizes for each specific bench test (e.g., number of stents tested for foreshortening) are not specified in the provided text.

    • Sample Size for Test Set: Not specified for individual bench tests.
    • Data Provenance: The bench testing was performed by M.I.Tech Co., Ltd., which is based in the Republic of Korea. The testing is described as "performance testing was performed as per the design control system," suggesting it was conducted under controlled, in-house laboratory conditions (retrospective in the sense that the data already existed at the time of submission).

    3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts

    This information is not applicable and not provided in the document. For a 510(k) reliant on bench testing and substantial equivalence, there isn't a "ground truth" established by external medical experts in the same way there would be for a diagnostic AI study. The "ground truth" for the performance tests would be the established engineering specifications and the performance characteristics of the predicate device.

    4. Adjudication Method for the Test Set

    This information is not applicable and not provided. Adjudication methods like 2+1 or 3+1 are typical for clinical studies involving interpretation by multiple human readers, not for bench testing of medical devices. The "adjudication" for bench test results would be based on comparison to engineering specifications and predicate device data.

    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

    There was no MRMC comparative effectiveness study done. This study is for a physical medical device (esophageal stent), not an AI-assisted diagnostic tool.

    6. If a Standalone (i.e. algorithm only without human-in-the-loop performance) was done

    There was no standalone (algorithm only) performance study done. This study is for a physical medical device (esophageal stent), not an algorithm or AI.

    7. The Type of Ground Truth Used

    The "ground truth" for this submission is based on the engineering specifications and performance characteristics derived from bench testing, as compared to the predicate device and relevant standards. It is not based on expert consensus, pathology, or outcomes data. The goal is to demonstrate that the new device performs comparably to the predicate device in key functional aspects.

    8. The Sample Size for the Training Set

    This information is not applicable and not provided. There is no "training set" in the context of a 510(k) submission for a physical medical device like an esophageal stent. Training sets are relevant for machine learning or AI models.

    9. How the Ground Truth for the Training Set Was Established

    This information is not applicable and not provided for the reasons stated above.

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    K Number
    K202973
    Manufacturer
    Date Cleared
    2021-05-11

    (223 days)

    Product Code
    Regulation Number
    876.5010
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    M.I.Tech Co., Ltd.

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The HANAROSTENT® Benefit™ Biliary (NNN) is indicated for the palliation of malignant strictures in the biliary tree.

    Device Description

    The HANAROSTENT® Benefit™ Biliary (NNN) is a self-expanding tubular prosthesis designed to maintain patency of biliary obstructions caused by malignant tumors. It consists of a self-expandable metal stent and a delivery device. The self-expandable metal stent is made of nickel titanium alloy (Nitinol) wire. The delivery device is made of polymeric materials. The stent is loaded into the distal part of the delivery device, and expanded in the body by pulling the outer sheath of the delivery device. The stent and delivery device are provided sterile and are intended for single use only.

    AI/ML Overview

    The provided document describes the HANAROSTENT® Benefit™ Biliary (NNN), a self-expanding tubular prosthesis intended for the palliation of malignant strictures in the biliary tree. The submission is a 510(k) premarket notification, which aims to demonstrate substantial equivalence to a legally marketed predicate device rather than proving de novo safety and effectiveness through extensive clinical trials.

    Therefore, the acceptance criteria and study information provided in this document are focused on demonstrating this substantial equivalence through a combination of bench testing and comparison of technological characteristics with predicate and reference devices, rather than a clinical study evaluating the device's performance against specific clinical acceptance criteria.

    1. Table of Acceptance Criteria and Reported Device Performance:

      The document does not explicitly state quantitative acceptance criteria for device performance based on a clinical study or specify performance metrics for a diagnostic device. However, it implicitly uses the performance of the predicate device as the "acceptance criteria" through a direct comparison of technological characteristics and bench testing results. The goal is to demonstrate that the new device is as safe and effective as the predicate.

      Performance Metric (Implied Acceptance Criteria)Reported Device Performance
      Design Verification Testing:
      ForeshorteningConfirmed safety and effectiveness (as compared to predicate device)
      Crossing ProfileConfirmed safety and effectiveness (as compared to predicate device)
      TrackabilityConfirmed safety and effectiveness (as compared to predicate device)
      Deployment ForceEquivalent to predicate device (Technological Characteristics section) and confirmed safety and effectiveness (Bench Testing section)
      Withdrawal (Repositioning) ForceConfirmed safety and effectiveness (as compared to predicate device)
      Expansion ForceEquivalent to predicate device (Technological Characteristics section) and confirmed safety and effectiveness (Bench Testing section)
      Stent SeparationConfirmed safety and effectiveness (as compared to predicate device)
      Deployment AccuracyConfirmed safety and effectiveness (as compared to predicate device)
      Compression ForceEquivalent to predicate device (Technological Characteristics section) and confirmed safety and effectiveness (Bench Testing section)
      Stent IntegrityConfirmed safety and effectiveness (as compared to predicate device)
      Stent Dimensional VerificationConfirmed safety and effectiveness (as compared to predicate device)
      Delivery System Tensile StrengthConfirmed safety and effectiveness (as compared to predicate device)
      Biocompatibility Testing:Confirmed safety and effectiveness (as compared to predicate device)
      MRI Safety and Compatibility Testing:Confirmed safety and effectiveness (as compared to predicate device)
      Corrosion Testing:
      Single stentEquivalent simulated single stent implant corrosion susceptibility to predicate device
      Overlapping stents (stent-in-stent)Equivalent simulated stent-in-stent implant corrosion susceptibility to reference devices
    2. Sample sizes used for the test set and data provenance:

      • The document states that "Bench testing was performed... as per the design control system." It does not specify the exact sample sizes (number of units tested) for each of the bench tests listed (e.g., foreshortening, deployment force).
      • Data Provenance: The bench testing was performed internally by the manufacturer, M.I.Tech Co., Ltd., based in the Republic of Korea. All data is presumably prospective as it was generated specifically for this 510(k) submission.
    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:

      Not applicable. This submission relies on bench testing and comparison to predicate devices, not on a clinical test set requiring expert ground truth for interpretation of outcomes.

    4. Adjudication method (e.g., 2+1, 3+1, none) for the test set:

      Not applicable. There was no clinical test set requiring adjudication in the context of this 510(k) submission.

    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. The HANAROSTENT® Benefit™ Biliary (NNN) is a physical medical device (stent), not an AI-powered diagnostic or assistive tool. Therefore, an MRMC study related to human readers and AI assistance is not relevant to this submission.

    6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done:

      Not applicable. This is a physical medical device, not an algorithm.

    7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.):

      For the purposes of this 510(k) submission, the "ground truth" for demonstrating substantial equivalence is primarily established by:

      • Predicate device characteristics and performance: The established safety and effectiveness of the legally marketed predicate device (HANAROSTENT® Biliary (NNN), K111149).
      • Engineering specifications and regulatory standards: Adherence to defined engineering specifications and relevant FDA guidance documents and international standards (e.g., ISO 10993-1 for biocompatibility, guidance for Nitinol devices, MRI safety).
      • Bench test results: Quantitative measurements obtained from various physical and mechanical tests directly on the device.
    8. The sample size for the training set:

      Not applicable. There is no "training set" in the context of a physical device like a stent. The device design and materials are based on established engineering principles and prior device iterations (like the predicate device), not machine learning.

    9. How the ground truth for the training set was established:

      Not applicable, as there is no training set.

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    K Number
    K190141
    Manufacturer
    Date Cleared
    2019-03-07

    (37 days)

    Product Code
    Regulation Number
    878.3610
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    M.I.Tech Co., Ltd.

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The HANAROSTENT® LowAxTM Colon/Rectum (NNN) is indicated for the palliative treatment of colorectal strictures caused by malignant neoplasms and to relieve large bowel obstruction prior to colectomy in patients with malignant strictures.

    Device Description

    This self-expanding tubular prosthesis designed to maintain patency of colorectal obstructions caused by malignant tumors. It consists of a self-expandable metal stent and a delivery system. The self-expandable metal stent is made of nickel titanium alloy (Nitinol) wire and the delivery system is made of polymeric materials. The stent is loaded into the distal part of the delivery system. The HANAROSTENT® LowAxTM Colon/Rectum (NNN) is intended for single use only.

    AI/ML Overview

    The HANAROSTENT® LowAxTM Colon/Rectum (NNN) device is a self-expanding tubular prosthesis designed to maintain the patency of colorectal obstructions caused by malignant tumors. This device is an update to a previously cleared device (K183616) with the only difference being the inclusion of a 25mm diameter stent.

    Here's an analysis of the acceptance criteria and study data provided:

    1. Table of Acceptance Criteria and Reported Device Performance

    Since this is a Special 510(k) submission for a device that is nearly identical to a previously cleared predicate (K183616), the acceptance criteria primarily focus on demonstrating that the expanded stent diameter range (to include 25mm) does not negatively impact the device's safety and effectiveness. The acceptance criteria and performance are derived from the existing predicate device and new bench testing for the expanded size.

    Acceptance Criteria CategorySpecific CriteriaReported Device PerformanceComments
    Material & BiocompatibilityBiocompatible materials (same as predicate K183616)Confirmed to use same biocompatible materials as K183616.Leveraged from predicate; no new testing required for materials.
    Stent DesignStent design (except for diameter size range) identical to predicate K183616Confirmed identical stent design (except for the 25mm diameter addition).Leveraged from predicate.
    Delivery Device DesignDelivery device design identical to predicate K183616Confirmed identical delivery device design.Leveraged from predicate.
    Radiopaque MarkersPresence and functionality of radiopaque markers (same as predicate K183616)Confirmed identical radiopaque markers to predicate.Leveraged from predicate; allow visualization and placement accuracy.
    Single Use & Method of Placement/DeploymentSingle use and method of placement/deployment identical to predicate K183616Confirmed identical single-use and placement/deployment methods.Leveraged from predicate.
    Sterilization & PackagingSterilization method, processes, packaging configuration, and materials identical to predicate K183616Confirmed identical sterilization methods, processes, and packaging.Leveraged from predicate, with new packaging validation for the subject device.
    Shelf LifeShelf life identical to predicate K183616Confirmed identical shelf life.Leveraged from predicate.
    Mechanical Performance (for 25mm stent)Meet established standards for:
    • Axial force
    • Compression force
    • Deployment force
    • Deployment accuracy
    • Dimensions
    • Expansion force
    • Repositioning force
    • Stent separation
    • Tensile strength
    • Trackability | M.I. Tech performed new bench testing to support the subject device in these areas.
      The submission states these tests were performed and results support safety and effectiveness. (Specific values not provided in document) | New testing specifically conducted for the expanded 25mm diameter stent. |
      | Corrosion Resistance | Meet established standards for corrosion (same as predicate K183616) | Testing provided with K183616 leveraged. | No new corrosion testing was required as the material is unchanged. |
      | MR Compatibility | Meet established standards for MR compatibility (same as predicate K183616) | Testing provided with K183616 leveraged. | No new MR compatibility testing required. |
      | Packaging Validation (for new 25mm stent) | Meet established standards for:
    • Dye penetration
    • Seal strength
    • Sterility | M.I. Tech performed new packaging validation testing to support the subject device in these areas. (Specific values not provided in document) | New packaging validation specific to the updated device configuration. |

    2. Sample size used for the test set and the data provenance

    The document does not specify a "test set" in the context of clinical data or patient outcomes for this particular submission. The evaluation is primarily based on bench testing for the new 25mm stent diameter. The document states:

    • "M.I. Tech performed new bench testing to support the subject device."
    • "M.I. Tech performed new packaging validation testing to support the subject device."

    The specific sample sizes for these bench tests (e.g., number of stents tested for axial force, compression force, etc.) are not provided in this summary. The provenance of this bench testing data would be from the manufacturer, M.I. Tech Co., Ltd., based in the Republic of Korea. It is lab-based, not patient-derived, and is considered prospective with respect to the design modifications.

    The submission is a Special 510(k) which relies heavily on the substantial equivalence to a predicate device (K183616). Therefore, much of the underlying data and validation for the core device characteristics would have been part of the K183616 submission.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

    This information is not applicable and not provided in the document. The evaluation is focused on engineering and performance bench testing against established standards, not clinical ground truth established by medical experts for a diagnostic or predictive device. For device safety and performance evaluation, relevant engineers and quality control personnel within M.I. Tech would have performed and reviewed the bench testing.

    4. Adjudication method for the test set

    This information is not applicable and not provided in the document. Adjudication methods (e.g., 2+1, 3+1) refer to clinical judgment by multiple experts to establish ground truth, typically for diagnostic studies. The testing described here is bench testing against specified engineering parameters.

    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

    There was no MRMC comparative effectiveness study done. This device is a medical implant (stent) and not an AI-assisted diagnostic or imaging device, so MRMC studies involving human readers and AI assistance are not relevant.

    6. If a standalone (i.e. algorithm only without human-in-the loop performance) was done

    This information is not applicable. The device is a physical medical device (stent), not an algorithm or software. Therefore, standalone performance of an algorithm is not a relevant concept for this submission.

    7. The type of ground truth used

    The "ground truth" for this submission is established through engineering standards and specifications for physical device performance. The bench testing performed for the 25mm diameter stent confirms that it meets these predefined performance criteria (e.g., axial force, compression force, deployment accuracy, dimensions). For the characteristics leveraged from the predicate device, the ground truth was established through similar engineering tests and potentially clinical data submitted with K183616.

    8. The sample size for the training set

    This information is not applicable and not provided. This device is not an AI/ML device that requires a training set. The "training set" concept is relevant for machine learning models, not for physical medical device engineering validation.

    9. How the ground truth for the training set was established

    This information is not applicable. As stated above, this device does not utilize a training set in the context of AI/ML.

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    K Number
    K183396
    Manufacturer
    Date Cleared
    2019-02-11

    (66 days)

    Product Code
    Regulation Number
    876.5010
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    M.I.Tech Co., Ltd.

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The HANAROSTENT® FAST™ Biliary (NNN) is indicated for the palliation of malignant strictures in the biliary tree.

    Device Description

    This self-expanding tubular prosthesis is designed to maintain patency of bile duct obstructions caused by malignant tumors. It consists of a self-expandable metal stent and a delivery system. The self-expandable metal stent is made of nickel titanium alloy (Nitinol) wire, and the delivery system is made of polymeric materials. The stent is loaded into the distal part of the delivery system, and expanded in the body by pulling the outer sheath of the delivery system. The HANAROSTENT® FAST™ Biliary (NNN) is intended for single use only.

    AI/ML Overview

    The provided document is a 510(k) Pre-Market Notification for a medical device called the HANAROSTENT® FAST™ Biliary (NNN). This notification primarily focuses on demonstrating substantial equivalence to a predicate device (HANAROSTENT® Biliary (NNN), K111149) rather than presenting a de novo study with explicit acceptance criteria and device performance for a new, unproven device.

    Based on the provided text, here's a breakdown of the requested information:

    1. Table of Acceptance Criteria and Reported Device Performance

    The document does not explicitly state numerical acceptance criteria for a clinical study to prove device performance in terms of patient outcomes. Instead, it describes bench testing to confirm the safety and effectiveness of the device compared to a predicate, focusing on technical characteristics and design changes.

    The "reported device performance" is essentially that the device performed comparably to the predicate in these bench tests and that the modifications did not raise new safety or effectiveness issues.

    Test PerformedAcceptance CriteriaReported Device Performance
    Expansion forceNot explicitly stated as a numerical criterion from a clinical study for this 510(k). The implicit criterion is that it is comparable to the predicate and performs as intended.Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Compression forceNot explicitly stated. Implicit criterion: comparable to predicate, performs as intended.Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Deployment forceNot explicitly stated. Implicit criterion: comparable to predicate, performs as intended.Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Tensile strengthNot explicitly stated. Implicit criterion: comparable to predicate, performs as intended.Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Dimensional testNot explicitly stated. Implicit criterion: comparable to predicate, performs as intended, and meets design specifications (e.g., new 110mm length).Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Crossing profileNot explicitly stated. Implicit criterion: comparable to predicate, performs as intended.Performed. Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Tracking forceNot explicitly stated for a clinical study. Implicit criterion: comparable to predicate and allows for effective navigation in a simulated bile duct.Performed "in a simulated bile duct." Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Deployment force (simulated)Not explicitly stated for a clinical study. Implicit criterion: comparable to predicate and allows for proper deployment in a simulated bile duct. )Performed "in a simulated bile duct." Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Withdrawal force (simulated)Not explicitly stated for a clinical study. Implicit criterion: comparable to predicate and allows for appropriate withdrawal of the delivery system without issues in a simulated bile duct.Performed "in a simulated bile duct." Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Deployment accuracy (simulated)Not explicitly stated for a clinical study. Implicit criterion: comparable to predicate and allows for accurate placement of the stent in a simulated bile duct.Performed "in a simulated bile duct." Conclusion: "no new issues of safety or effectiveness as compared to the predicate device."
    Biocompatibility safetyIn accordance with ISO 10993-1:2003, 2012. (This standard specifies biological evaluation of medical devices within a risk management process.)Assessed in accordance with ISO 10993-1:2003, 2012. Conclusion: "non-clinical data supports the safety of the proposed devices."
    Overall Safety & EffectivenessThe device is "substantially equivalent" to the predicate device and "safe and effective and will perform as intended in the specified use conditions." (This is the overarching conclusion of the 510(k) process, based on the non-clinical data.)"The non-clinical data supports the safety of the proposed devices and demonstrates that the HANAROSTENT® FAST™ Biliary (NNN) is safe and effective and will perform as intended in the specified use conditions."

    2. Sample Size Used for the Test Set and the Data Provenance

    The document explicitly states that "Appropriate bench testing was performed" and refers to "non-clinical data." This indicates that no human test set (patients) was used for this 510(k) submission. The testing was performed on physical device samples. The number of samples for each specific bench test is not provided.

    • Sample size for test set: Not specified numerically for individual tests, but refers to physical device samples for bench testing. No human test set was used.
    • Data provenance: Bench testing results, likely conducted in-house or by a contracted lab. No country of origin for human data, as no human data was used. The study is not applicable for retrospective or prospective classification as it involves bench testing, not clinical data.

    3. Number of Experts Used to Establish the Ground Truth for the Test Set and the Qualifications of Those Experts

    Not applicable. There was no human "test set" and therefore no ground truth established by medical experts in the context of this 510(k) submission. The ground truth for bench testing is determined by engineering specifications and physical measurements.

    4. Adjudication Method for the Test Set

    Not applicable. As no human test set was used, there was no need for expert adjudication.

    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 510(k) pertains to a physical medical device (stent), not a medical imaging AI algorithm. Therefore, an MRMC study or assessment of AI assistance is not relevant.

    6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done

    Not applicable. This is not an AI algorithm.

    7. The Type of Ground Truth Used

    The "ground truth" for this submission was based on engineering specifications, physical measurements, and comparison to the predicate device's established performance. The core argument is substantial equivalence, meaning the new device performs similarly to a legally marketed device that has already been deemed safe and effective.

    8. The Sample Size for the Training Set

    Not applicable. This is not an AI algorithm, so there is no "training set."

    9. How the Ground Truth for the Training Set Was Established

    Not applicable. This is not an AI algorithm.

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    K Number
    K160893
    Device Name
    HANAROCare ReJu
    Manufacturer
    Date Cleared
    2016-07-27

    (118 days)

    Product Code
    Regulation Number
    882.5890
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    M.I.TECH CO.,LTD

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    HANAROCare ReJu is indicated for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, neck, upper extremities (arm) and lower extremities (leg) due to strain from exercise or normal household work activities.

    Device Description

    HANAROCare ReJu is a personal stimulator that reduces the pain by delivering a specific rhythmic electric stimulation to the nerves and the muscles through electrode attached to the skin (Transcutaneous Electrical Nerve Stimulation). Electric current delivered to the nerves reduces the pain. The subject device offers four different stimulation modes (Mode 1, Mode 2, Mode 3, and Combination Mode). It is composed of as stimulator, silicon electrode, and gel pads.

    AI/ML Overview

    The provided text describes the Hanarocare Reju, a Transcutaneous Electrical Nerve Stimulator (TENS) for pain relief, and its substantial equivalence to predicate devices, but does not contain information about acceptance criteria for device performance in a clinical study specifically, nor a study proving it meets such criteria in terms of efficacy on patients.

    The "Performance Data" section details various engineering, electrical, biocompatibility, and usability tests, but these are about the device's technical specifications, safety, and user-friendliness, not its clinical effectiveness against specific pain relief metrics.

    Therefore, the requested information elements cannot be fully extracted from the provided document.

    However, I can extract the information related to the performance data and usability in a structured way:


    1. Table of Acceptance Criteria and Reported Device Performance

    Note: The document does not provide specific acceptance criteria or reported performance for clinical efficacy (e.g., pain reduction levels). Instead, it lists various tests performed and implies that the measured values meet general "criteria" for performance characteristics. The table below focuses on the tests mentioned and their objectives.

    Acceptance Criteria (Implied Objective)Reported Device Performance (Summary of Study Findings)
    Shelf Life: Maintain quality for 2 yearsPassed: Visual Inspection, Gel Pad Adhesive Strength Test, Electrical Conductivity Test validated 2-year shelf life.
    Biocompatibility: Safe for skin contactPassed: Cytotoxicity Test (ISO 10993-5), Primary skin irritation study (ISO 10993-10), Contact Hypersensitivity (ISO 10993-10) for gel pad.
    Electrical Safety: Meet medical standardsPassed: Evaluated according to IEC 60601-1, IEC 60601-2-10, IEC 60601-1-11, IEC 60601-1-6, IEC 60601-1-2, IEC 62366, IEC 62304 standards.
    Physical Durability/Transport: Withstand stressPassed: Atmospheric Preconditioning, Atmospheric Conditioning, Compression, Vibration, Shock tests (ISTA 2014 Integrity Test Procedure 2A).
    Material Composition: RoHS compliancePassed: RoHS verification (IEC 62321:2008).
    Stimulus Output Characteristics: Meet specified parametersPassed: Performance test conducted to evaluate characteristic parameters of the stimulus output waveform; verified that measurement values meet the criteria.
    Usability: Easy for users to operatePassed: Usability study demonstrated "ease to use the HANAROCare ReJu."
    Safety Feature: Cut-off output above 3kΩ resistive loadReported: Device reduces and cuts off output (to less than 15V at open load) when detecting >3kΩ, with LED/buzzer alarm and automatic shutdown after 3 mins. This is a safety feature and does not affect performance.

    Regarding the specific questions that cannot be answered from the provided text:

    1. Sample size used for the test set and the data provenance:

      • For the usability study: 30 users of various age, gender, and educational backgrounds.
      • For other tests (shelf life, biocompatibility, electrical, physical durability, RoHS, performance test): Sample sizes are not specified.
      • Data provenance: Not specified.
    2. Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not applicable, as no clinical effectiveness study with a "ground truth" (e.g., expert-assessed pain levels, clinical outcomes) is described. The tests are technical compliance and user experience.

    3. Adjudication method (e.g. 2+1, 3+1, none) for the test set: Not applicable, as no clinical effectiveness study requiring adjudication is described.

    4. 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 is not an AI/imaging device.

    5. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Not applicable. This is a medical device, not an algorithm.

    6. The type of ground truth used (expert consensus, pathology, outcomes data, etc.): Not applicable for clinical efficacy. For technical tests, the "ground truth" is defined by the technical specifications and standards (e.g., IEC standards, ISO standards).

    7. The sample size for the training set: Not applicable, as no machine learning or similar model requiring a training set is described.

    8. How the ground truth for the training set was established: Not applicable.

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