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510(k) Data Aggregation

    K Number
    K211677
    Manufacturer
    Date Cleared
    2021-07-28

    (57 days)

    Product Code
    Regulation Number
    888.3510
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ELEOS Limb Salvage System

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

    The ELEOS™ Limb Salvage System is indicated for resection and replacement of the proximal femur; intercalary portion of the femur, total femur, distal femur, and proximal tibia in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusion acetabuli, and painful hip dysplasia;

    2. Inflammatory degenerative joint disease such as rheumatoid arthritis;

    3. Correction of functional deformity

    4. Revision procedures where other treatments or devices have failed; and,

    5. Treatment of fractures that are unmanageable using other techniques.

    The ELEOS Limb Salvage System is also indicated for procedures where resection and replacement of the proximal femur, intercalary portion of the femur, distal femur, and proximal tibia is required with the following conditions:

    1. Patients suffering from severe arthropathy of the hip and/or knee that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision hip or knee arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    Device Description

    The Onkos Surgical ELEOS™ Limb Salvage System consists of components that are used in the reconstruction of the lower limb. The reconstruction are proximal femur, intercalary portion of the femur, distal femur, total femur, proximal tibia, and hinged knee. The ELEOS Limb Salvage components are femoral head, proximal femur, female stem, mid-section, segmental stem, distal femur, tibial hinge assembly, axial pin, tibial poly spacer, tibial baseplate, male-male mid section, resurfacing femur, proximal tibia, patella, stem extension, and tibial wedges and augments. Instrumentation is provided non-sterile in surgical trays which are to be re-processed per validated instructions.

    AI/ML Overview

    The provided text is a 510(k) Summary for a medical device called the ELEOS™ Limb Salvage System. This document focuses on demonstrating substantial equivalence to previously cleared predicate devices, rather than proving the device meets specific acceptance criteria through a clinical study with performance metrics like sensitivity, specificity, or accuracy.

    Therefore, many of the requested details about acceptance criteria, sample sizes, expert ground truth, adjudication methods, MRMC studies, standalone performance, and ground truth establishment are not applicable or available in this type of submission.

    Here's an analysis of the available information:

    1. A table of acceptance criteria and the reported device performance

    This information is not provided in the document. The 510(k) summary focuses on demonstrating substantial equivalence through a risk-based evaluation and comparison of technological characteristics, rather than reporting specific performance metrics against pre-defined acceptance criteria.

    2. Sample sized used for the test set and the data provenance (e.g. country of origin of the data, retrospective or prospective)

    This information is not provided. As no new performance testing was required (see point 5.7), there was no "test set" in the context of typical AI/software performance studies. The evaluation was based on a risk assessment and comparison to existing predicate devices.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)

    This information is not provided. Since no new performance testing with a ground truth was conducted, this is not applicable.

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

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

    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

    This information is not provided. An MRMC comparative effectiveness study is not mentioned. The device is a "Limb Salvage System" (a physical implantable medical device), not an AI-powered diagnostic or assistive tool for human readers.

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

    This information is not provided. This concept is not applicable as the device is a physical implant, not an algorithm.

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

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

    8. The sample size for the training set

    This information is not provided. The device is an orthopedic implant, not an AI model that requires a "training set."

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

    This information is not provided. Not applicable as there is no training set for this type of device.


    Summary of what is provided regarding the "study" for substantial equivalence:

    • Device: ELEOS™ Limb Salvage System (K211677)
    • Purpose of Submission: To add a new indication for use (intercalary replacement) to the existing ELEOS™ Limb Salvage System, consistent with the predicate DePuy LPS System, and to introduce a female stem component.
    • Predicate Devices:
      • Primary Predicate: ELEOS™ Limb Salvage System, Onkos Surgical, Inc., K161520
      • Predicate: Orthogenesis LPS System, DePuy, Inc., K003182
    • Method of "Proof":
      • Technological Characteristics Comparison: The submission compares the technological characteristics of the subject device (including the new female stem) to the predicate devices. It notes that the design of the female stem utilizes the same material, segmental taper, cement flutes, and length as the primary predicate.
      • Risk-Based Evaluation: A risk-based evaluation determined that the addition of the female stem for intercalary replacement does not raise new concerns with respect to safety and/or effectiveness.
      • Conclusion of Risk Evaluation: This evaluation demonstrated "no new or increased risks related to loosening, subsidence, fatigue, dissociation, and/or fretting corrosion compared to the primary predicate device."
      • Performance Data: "additional performance testing was not required to support this submission" because the risk-based evaluation showed no new concerns.
      • Clinical Data: "Clinical data was not deemed necessary for the subject device."
    • Overall Conclusion (5.9): Based on the comparisons and risk assessment, the subject device is deemed substantially equivalent to the primary predicate and predicate devices, implying that any differences do not raise new questions of safety and effectiveness, and the proposed device is at least as safe and effective as the legally marketed predicate devices.

    In essence, the "study" here is a design comparison and risk assessment against an already cleared device, demonstrating that the modifications (new indication and component) do not introduce new safety or effectiveness risks compared to the predicate devices. It relies on the prior clearance information of the predicate devices.

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    K Number
    K203815
    Manufacturer
    Date Cleared
    2021-06-09

    (162 days)

    Product Code
    Regulation Number
    888.3350
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ELEOS Limb Salvage System with BioGrip

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

    ELEOSTM Limb Salvage System Hip Components:

    Indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions :

    1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusion acetabuli. and painful hip dysplasia;

    2. Inflammatory degenerative joint disease such as rheumatoid arthritis;

    3. Correction of functional deformity

    4. Revision procedures where other treatments or devices have failed; and,

    5. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal, distal and or total femur is required with the following conditions:

    1. Patients suffering from severe arthropathy of the hip that does not respond to any conservative therapy or better alternative surgical treatment:

    2. Surgical intervention for severe trauma, revision hip arthroplasties, and/or Oncology indications.

      1. Metastatic diseases
        ELEOSTM Limb Salvage System Knee Components:

    Indicated for cemented use in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease including osteoarthritis, or avascular necrosis;

    2. Inflammatory degenerative joint disease including rheumatoid arthritis;

    3. Correction of functional deformity;

    4. Revision procedures where other treatments or devices have failed; and

    5. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal tibia is required with the following conditions:

    1. Patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision knee arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    Device Description

    The Onkos Surgical ELEOS™ Limb Salvage System consists of components that are used in the reconstruction of the lower limb. The reconstruction are proximal femur, distal femur, total femur, proximal tibia, and hinged knee. The ELEOS Limb Salvage components are femoral head, proximal femur, mid-section, stem, distal hinge femur, tibial hinge assembly, axial pin, tibial poly spacer, tibial sleeve, male mid-section, resurfacing hinge femur, and proximal tibia, optional components include modular collars, patella, stem extensions, tibial wedges and augments. Instrumentation is provided non-sterile in surgical trays which are to be re-processed per the validated instructions stated below.

    AI/ML Overview

    The provided text is a 510(k) summary for a medical device (ELEOS Limb Salvage System with BioGrip) seeking FDA clearance. This type of submission relies on demonstrating substantial equivalence to a legally marketed predicate device, rather than proving novel performance against specific acceptance criteria through a clinical study.

    Therefore, the document does not contain the acceptance criteria or a study designed to prove the device meets those criteria in the way you've outlined for a clinical performance study of, for example, an AI algorithm.

    Instead, the document details performance data provided in support of substantial equivalence to a predicate device. This data focuses on mechanical and biocompatibility testing to ensure the new device (a line extension with modular collars and porous technology) is as safe and effective as the existing, cleared predicate device.

    Here's a breakdown of what is available based on your request, with an explanation of why other points are not applicable in this context:


    1. Table of Acceptance Criteria and Reported Device Performance

    As this is a 510(k) submission based on substantial equivalence, there isn't a direct "acceptance criteria" table with specific performance metrics (like sensitivity/specificity for an AI algorithm) that the device must meet to prove its clinical utility. Instead, the performance data provided demonstrates that the device performs similarly or better mechanically and is biocompatible compared to predicate devices, adhering to recognized standards.

    Biocompatibility Testing:

    Acceptance Criteria (General Goal)Reported Device Performance
    Biocompatible for permanent contactPassed tests per ISO 10993 series and ANSI/AAMI ST72 for bacterial endotoxins.
    Endotoxin levels within limitsMet 20 endotoxin units (EU)/device limit for implanted medical devices.

    Mechanical Testing:

    Acceptance Criteria (General Goal)Reported Device Performance
    Equivalent mechanical properties to predicateCompleted testing according to ASTM F1044, F1147, F1160, F1854, F1978, ISO 7206-4, and ISO 13179-1:2014. Results support substantial equivalence to predicate.
    Adequate strength and durabilityImplicitly demonstrated by passing the listed ASTM and ISO standards for orthopedic implants. The specific numerical results (e.g., shear strength values) are not provided in this summary.

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

    This information is not applicable in the context of this 510(k) submission. The "test set" in this case refers to the physical device components subjected to laboratory testing. The document does not describe a clinical study with patients or data from medical records.

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

    This information is not applicable. Ground truth, in the sense of expert consensus on clinical diagnoses or outcomes, is not established for the mechanical and biocompatibility tests performed. These tests rely on standardized protocols and measurements, not expert interpretation of clinical data.

    4. Adjudication Method for the Test Set

    This information is not applicable. Adjudication methods like 2+1 or 3+1 are used in clinical studies to resolve discrepancies in expert interpretations of data. The performance analyses presented here are laboratory-based.

    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

    This information is not applicable. This submission is for a physical orthopedic implant system, not an AI algorithm. No MRMC study or AI assistance is mentioned.

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

    This information is not applicable. This submission is for a physical orthopedic implant system, not an algorithm.

    7. The Type of Ground Truth Used

    For biocompatibility, the "ground truth" is defined by the toxicological characteristics and cellular responses measured against established ISO standards.
    For mechanical testing, the "ground truth" is defined by the physical limits and properties established in the ASTM and ISO standards for orthopedic implants.

    8. The Sample Size for the Training Set

    This information is not applicable. There is no "training set" in the context of this device's development as it is not an AI/machine learning device. The design and testing are based on engineering principles and material science.

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

    This information is not applicable for the same reasons as point 8.

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    K Number
    K203588
    Manufacturer
    Date Cleared
    2021-02-05

    (59 days)

    Product Code
    Regulation Number
    888.3350
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ELEOS™ Limb Salvage System

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

    ELEOSTM Limb Salvage System with Hip Components:

    Indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusion acetabuli. and painful hip dysplasia:

    2. Inflammatory degenerative joint disease such as rheumatoid arthritis;

    3. Correction of functional deformity

    4. Revision procedures where other treatments or devices have failed; and,

    5. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal, distal and/ or total femur is required with the following conditions:

    1. Patients suffering from severe arthropathy of the hip that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision hip arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    ELEOS™ Limb Salvage System with Knee Components:

    Indicated for cemented use in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with the following conditions:

    l ) Non-inflammatory degenerative joint disease including osteoarthritis, traumatic arthritis, or avascular necrosis;

    1. Inflammatory degenerative joint disease including rheumatoid arthritis;

    2. Correction of functional deformity;

    3. Revision procedures where other treatments or devices have failed; and

    4. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the is required with the following conditions:

    1. Patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision knee arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    Device Description

    The Onkos Surgical ELEOS™ Limb Salvage System consists of components that are used in the reconstruction of the lower limb. The reconstruction applications are proximal femur, distal femur, total femur, proximal tibia, and hinged knee. The ELEOS Limb Salvage components are femoral head, proximal femur, mid-section, stem, distal femur, tibial hinge component, axial pin, tibial poly spacer, tibial baseplate, male-male mid-section, resurfacing femur, proximal tibia, tapered screws, patella, stem extension, tibial wedges and augments. Instrumentation is provided non-sterile in surgical trays which are to be re-processed per validated instructions.

    AI/ML Overview

    This is an FDA 510(k) clearance letter for the ELEOS™ Limb Salvage System. Unfortunately, the provided document does not contain the kind of detailed information about acceptance criteria, device performance, study methodology (sample sizes, ground truth establishment, expert qualifications, adjudication methods, MRMC studies, or standalone performance) that your request outlines.

    Instead, this document focuses on demonstrating substantial equivalence to a predicate device based primarily on mechanical testing.

    Here's what can be extracted from the document regarding performance data, and an explanation of why the other information is not present:


    Acceptance Criteria and Device Performance

    Acceptance CriteriaReported Device Performance
    Mechanical Testing:Passes Mechanical Testing:
    Cyclic Fatigue (ASTM F1800 & F2083)Evaluated and results support equivalence to predicate.
    Fretting Corrosion (mating surfaces post-fatigue)Evaluated and results support equivalence to predicate.
    Screw Loosening (post-fatigue)Evaluated and results support equivalence to predicate.

    Study Details (Not Applicable as per document content)

    The document explicitly states: "Clinical data was not deemed necessary for the subject device." This means a clinical study, as you've described with human readers, ground truth, and statistical analysis for diagnostic performance, was not performed or required for this 510(k) clearance.

    Therefore, the following information is not available in the provided text:

    • Sample sized used for the test set and the data provenance: Not applicable, as a clinical test set for diagnostic performance was not used.
    • Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not applicable.
    • Adjudication method (e.g. 2+1, 3+1, none) for the test set: Not applicable.
    • 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 a surgical implant, not an AI diagnostic tool.
    • If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Not applicable.
    • The type of ground truth used (expert consensus, pathology, outcomes data, etc): Not applicable.
    • The sample size for the training set: Not applicable.
    • How the ground truth for the training set was established: Not applicable.

    Explanation:

    The ELEOS™ Limb Salvage System is a physical medical device (orthopedic implant) used in reconstructive surgery. The FDA's 510(k) clearance pathway often relies on demonstrating substantial equivalence to an already legally marketed predicate device. For devices like this, substantial equivalence is primarily established through:

    1. Technological Characteristics Comparison: Showing that the new device has similar design, materials, and intended use as the predicate.
    2. Performance Data: This typically involves bench testing (mechanical, material, biocompatibility, etc.) to ensure the device performs safely and effectively as intended and is comparable to the predicate.

    The type of detailed clinical study information you're asking for (sample sizes, expert ground truth, MRMC studies, AI performance metrics) is characteristic of submissions for diagnostic devices, particularly those involving artificial intelligence or image analysis, where the "performance" is about diagnostic accuracy or reader improvement. This is not applicable to a surgical implant like the ELEOS™ Limb Salvage System in the context of this 510(k) clearance.

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    K Number
    K203090
    Manufacturer
    Date Cleared
    2020-12-11

    (59 days)

    Product Code
    Regulation Number
    888.3350
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ELEOS Limb Salvage System featuring BIOGRIP

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

    ELEOSTM Limb Salvage System with Hip Components:

    Indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusion acetabuli. and painful hip dysplasia:

    2. Inflammatory degenerative joint disease such as rheumatoid arthritis;

    3. Correction of functional deformity

    4. Revision procedures where other treatments or devices have failed; and,

    5. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal, distal and/ or total femur is required with the following conditions:

    1. Patients suffering from severe arthropathy of the hip that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision hip arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    ELEOS™ Limb Salvage System with Knee Components:

    Indicated for cemented use in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with the following conditions:

    l ) Non-inflammatory degenerative joint disease including osteoarthritis, traumatic arthritis, or avascular necrosis;

    1. Inflammatory degenerative joint disease including rheumatoid arthritis;

    2. Correction of functional deformity;

    3. Revision procedures where other treatments or devices have failed; and

    4. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the is required with the following conditions:

    1. Patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision knee arthroplasties, and/or Oncology indications.

      1. Metastatic diseases
    Device Description

    The Onkos Surgical ELEOS™ Limb Salvage System consists of components that are used in the reconstruction of the lower limb. The reconstruction applications are proximal femur, distal femur, total femur, proximal tibia, and hinged knee. The ELEOS Limb Salvage components are femoral head, proximal femur, mid-section, stem, distal hinge femur, tibial hinge assembly, axial pin, tibial poly spacer, tibial sleeve, male-male mid-section, resurfacing hinge femur, and proximal tibia, patella, stem extension, modular collar, tibial wedges and augments.

    AI/ML Overview

    The ELEOS™ Limb Salvage System with BIOGRIP™ did not have specific quantitative acceptance criteria for performance metrics in a clinical or AI-assisted context. The substantial equivalence determination was based on demonstrating the safety and effectiveness of the device through biocompatibility and mechanical testing, comparing it to a predicate device.

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

    1. Table of Acceptance Criteria and Reported Device Performance

    Acceptance Criteria CategoryAcceptance Criteria (Stated or Implied)Reported Device Performance
    BiocompatibilityCompliance with ISO 10993 standards and FDA guidance for:
    • Cytotoxicity
    • Sensitization
    • Irritation
    • Acute Systemic Toxicity
    • Material Mediated Pyrogenicity
    • Genotoxicity
    • Chemical Characterization
    • Toxicological Risk Assessment
    • Endotoxin limit of 20 EU/device | "Testing was successfully performed, and it was confirmed that the subject devices meet the 20 EU/device testing limit for general medical devices that are implanted."
      "The following biocompatibility tests were performed on each material group to ensure biocompatibility." (Implies successful completion for all listed tests). |
      | Mechanical Performance | Equivalence to predicate device based on bench tests per FDA guidance and ASTM/ISO standards:
    • Shear Testing of Coatings (ASTM F1044)
    • Tension Testing of Coatings (ASTM F1147)
    • Shear and Bending Fatigue Testing of Coatings (ASTM F1160)
    • Stereological Evaluation of Porous Coatings (ASTM F1854)
    • Abrasion Resistance (ASTM F1978)
    • Knee Replacement Prosthesis Specification (ASTM F2083)
    • Plasma sprayed unalloyed titanium coatings (ISO13179-1:2014) | "The following bench testing was completed and the results of support the subject devices are equivalent to the predicate device." (Implies successful demonstration of equivalence across all listed tests). |
      | Design Validation | Function as intended and user needs met. | "Design Validation demonstrated the subject implant and existing instruments function as intended and user needs were met." |

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

    • Sample Size: Not applicable in the context of clinical testing with human subjects. The testing was primarily bench testing (biocompatibility and mechanical) and a cadaver lab for design validation. The document does not specify the number of individual test articles or specimens used in the bench tests, only the types of tests performed.
    • Data Provenance: The biocompatibility and mechanical testing were conducted in a laboratory setting (bench tests), not from patient data. The design validation used a cadaver lab.

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

    • Not applicable as the study did not involve human experts establishing ground truth on a test set (e.g., image interpretation for an AI device). The "ground truth" for the performance aspects was established through standardized laboratory testing protocols and design validation in a cadaver lab.

    4. Adjudication Method for the Test Set (e.g., 2+1, 3+1, none)

    • Not applicable. There was no expert adjudication process for a test set as the evaluation was based on laboratory testing and functional assessment in a cadaver lab rather than diagnostic interpretation.

    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

    • No, an MRMC comparative effectiveness study was not done. This device is a medical implant, not an AI-powered diagnostic or assistive tool for human readers.

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

    • Not applicable. This device is a physical medical implant (Limb Salvage System), not an algorithm or AI system.

    7. The Type of Ground Truth Used (expert consensus, pathology, outcomes data, etc.)

    • The "ground truth" for demonstrating the device's acceptable performance was based on:
      • Validated laboratory testing standards (ISO and ASTM for biocompatibility and mechanical properties)
      • Direct functional assessment in a cadaver lab for design validation.
      • Comparison to a legally marketed predicate device to establish substantial equivalence.

    8. The Sample Size for the Training Set

    • Not applicable. This document describes the clearance of a medical device (implant), not an AI algorithm that requires a training set.

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

    • Not applicable. As there was no AI algorithm or training set, there was no ground truth for a training set to be established.
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    K Number
    K161520
    Date Cleared
    2016-10-28

    (148 days)

    Product Code
    Regulation Number
    888.3510
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ELEOS Limb Salvage System

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

    ELEOSTM Limb Salvage System Hip Components:

    Indicated for use in total hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusion acetabuli. and painful hip dysplasia;

    2. Inflammatory degenerative joint disease such as rheumatoid arthritis;

    3. Correction of functional deformity

    4. Revision procedures where other treatments or devices have failed; and,

    5. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal, distal and/ or total femur is required with the following conditions:

    1. Patients suffering from severe arthropathy of the hip that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma, revision hip arthroplasties, and/or Oncology indications.

    3. Metastatic diseases

    ELEOSTM Limb Salvage System Knee Components:

    Indicated for cemented use in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with the following conditions:

    1. Non-inflammatory degenerative joint disease including osteoarthritis, traumatic arthritis, or avascular necrosis;
      1. Inflammatory degenerative joint disease including rheumatoid arthritis;
      1. Correction of functional deformity;
      1. Revision procedures where other treatments or devices have failed; and
      1. Treatment of fractures that are unmanageable using other techniques.

    Limb salvage system is also indicated for procedures where radical resection and replacement of the proximal tibia is required with the following conditions:

    1. Patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment;

    2. Surgical intervention for severe trauma. revision knee arthroplasties, and/or Oncology indications.

      1. Metastatic diseases
    Device Description

    The Onkos Surgical ELEOS™ Limb Salvage System consists of components that are used in the reconstruction of the lower limb. The reconstruction applications are proximal femur, distal femur, total femur, proximal tibia, and hinged knee. The ELEOS Limb Salvage components are femoral head, mid-section, stem, distal hinge femur, tibial hinge assembly, axial pin, tibial poly spacer, tibial sleeve, male mid-section, resurfacing hinge femur, and proximal tibia, patella. stem extension, tibial wedges and augments. Instrumentation is provided non-sterile in surgical trays which are to be re-processed per the validated instructions stated below.

    AI/ML Overview

    The provided text is a 510(k) summary for a medical device (ELEOS Limb Salvage System) seeking FDA clearance based on substantial equivalence to a predicate device. It does not describe a study involving acceptance criteria for a device's performance in the context of an AI/algorithm-driven system. Therefore, I cannot extract the information required to answer your questions as they pertain to AI/algorithm performance studies.

    The document states:

    • "No performance data is provided." (Page 7, Section VII. Performance Data)
    • "A copy of the full 510(k) for the predicate device (K013035) is provided because there are no technological differences between the subject and predicate devices." (Page 7, Section VII. Performance Data)
    • The conclusion is based on the subject device being "identical with respect to fit, form, function and manufacturing processes as the predicate device" (Page 7, Section VIII. Conclusions).

    This indicates that the clearance for the ELEOS Limb Salvage System was based on demonstrating substantial equivalence to a previously cleared device, not on independent performance testing against specific acceptance criteria for a new, AI-driven functionality.

    Therefore, questions about acceptance criteria, reported device performance, sample sizes, data provenance, expert ground truth, adjudication methods, MRMC studies, standalone performance, and training set information are not applicable to this document.

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