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510(k) Data Aggregation

    K Number
    K994007
    Manufacturer
    Date Cleared
    2000-02-04

    (72 days)

    Product Code
    Regulation Number
    888.3350
    Why did this record match?
    Reference Devices :

    K905687, K913420, K925345, K943586, K964431, K991708

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

    The Mallory/ Head Smooth femoral component is indicated for:

    1. Non-inflammatory degenerative joint disease including osteoarthritis and avascular necrosis
    2. Rheumatoid arthritis
    3. Correction of functional deformity
    4. Revision procedures where other treatment or devices have failed
    5. Treatment of nonunions, which are femoral neck and trochanteric fractures of the proximal femur with head involvement, unmanageable using other techniques.
      This device is for use with bone cement.
    Device Description

    The Mallory/Head Smooth femoral components are composed of Co-Cr-Mo alloy conforming to ASTM F-799 standards. The Mallory/Head Smooth is to be used with bone cement. A progressive increase in cross-sectional dimensions and overall length is seen throughout the range of sizes (size 1 -- 5). The straight stem design eliminates the need for left and right configurations.
    The most defining feature of this series is the surface geometry and finish of the stem body. The finish is sisal buff in one direction (proximal to distal) around the entire stem with a roughness (Ra) value not less than 24 microinches. The surface is void of ledges, grooves, and collars. This smooth design will allow minute amounts of subsidence over an extended period of time. The smooth stem is used with the centralizer/sinker set so that the stem continues to remain tightly wedged in place rather than loosening progressively over time.
    The centralizer/sinker set consists of two polymethylmethacrylate (PMMA) pieces. The sinker fits on the distal tip of the stem and creates a 2-3 mm (in length) void in the cement mantle. Without this void, distal to the tip of the stem, small amounts of subsidence would cause undesirable point loads in the cement. The centralizer is designed to fit on the central one-third of the stem and to provide a cement mantle of uniform thickness around the stem.
    The Mallory/Head Smooth Femoral Component can be used with any Biomet modular head with a Type 1 taper, such as: Cobalt Chrome modular heads, Zirconia modular heads or an endoprosthesis head. Zirconia ceramic heads have been previously cleared in 510(k)'s: K905687, K913420, K925345, K943586. K964431. K991708. For metallic heads the surface of the bore of the head was measured to have a roughness (Rg) value of 34 microinches. The articulating surface roughness (Ra) value was found to be 5.6. The ceramic heads have a surface roughness of Rg

    AI/ML Overview

    The provided text describes a 510(k) premarket notification for the Mallory/Head Smooth Femoral Stem, a medical device. This type of submission focuses on demonstrating substantial equivalence to a legally marketed predicate device, rather than proving safety and effectiveness through extensive clinical trials with predefined acceptance criteria.

    Therefore, the document does not contain information about acceptance criteria, a study proving device meets acceptance criteria, sample sizes, expert qualifications, adjudication methods, MRMC studies, standalone performance, or training set details as typically sought for AI/diagnostic devices.

    The submission is for a hip femoral component prosthesis, which is a physical implant, not a diagnostic or AI-driven device. As such, the FDA's clearance is based on a review of the device's design, materials, and intended use, and its substantial equivalence to previously cleared predicate devices.

    Here's what can be extracted from the text in relation to your request, with the understanding that it won't fulfill all aspects due to the nature of the submission:

    1. Table of Acceptance Criteria and Reported Device Performance:

    No specific "acceptance criteria" such as sensitivity, specificity, or accuracy are provided, nor is there a performance study reporting these metrics. The performance is assessed through demonstration of "substantial equivalence" to predicate devices, focusing on design, materials, and intended use.

    Acceptance Criteria (Implied by 510(k) Process)Reported Device Performance
    Material Composition: Conformance to established standards.Co-Cr-Mo alloy conforming to ASTM F-799 standards.
    Surface Geometry/Finish: Adherence to defined characteristics.Sisal buff finish in one direction (proximal to distal) around the entire stem with a roughness (Ra) value not less than 24 microinches. Surface is void of ledges, grooves, and collars.
    Compatibility with other components:Can be used with any Biomet modular head with a Type 1 taper (Cobalt Chrome, Zirconia, endoprosthesis). Compatible with any commercially available acetabular component.
    Roughness of modular heads: Adherence to specified values.For metallic heads: surface of the bore Ra value of 34 microinches, articulating surface Ra value of 5.6. For ceramic heads: articulating surface Ra
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