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510(k) Data Aggregation

    K Number
    K180798
    Date Cleared
    2018-07-09

    (104 days)

    Product Code
    Regulation Number
    888.3358
    Why did this record match?
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The Prime Acetabular Cup System is intended 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, ankyloses, protrusio acetabuli, and painful hip dysplasia:
      1. inflammatory degenerative joint disease such as rheumatoid arthritis;
      1. correction of functional deformity; and,
      1. revision procedures where other treatments or devices have failed.

    Shells with BIOFOAM® metal foam coating are intended only for uncemented arthroplasty.

    Device Description

    The Prime Acetabular Cup System includes acetabular shells, acetabular liners, and optional cancellous bone screws. The design features are summarized below:

    • · Acetabular Shells
      • Manufactured from titanium alloy о
      • BIOFOAM® coated o
      • Available in Solid or Quad configurations o
      • Outer Diameter sizes 42mm to 68mm in 2mm increments O
    • Acetabular Liners ●
      • Manufactured from A-CLASS® (highly crosslinked ultra-high molecular o weight polyethylene)
      • Lipped Available in in Standard, or Face-changing Lateralized O configurations with 12 anti-rotational tabs
      • Inner Diameter sizes 22mm to 44mm O
    • Bone Screws ●
      • Manufactured from titanium alloy o
      • 6.5mm diameter O
      • 0 Available in lengths 15mm to 80mm in 5mm increments

    The subject Acetabular Liner has undergone design changes in regard to the locking detail; all other design aspects, intended use, fundamental scientific technology, and material remain identical to the predicate K170444 Acetabular Liner.

    AI/ML Overview

    This looks like a 510(k) summary for a medical device (Prime Acetabular Cup System), which focuses on demonstrating substantial equivalence to a predicate device rather than presenting detailed clinical study results with acceptance criteria.

    As such, it does not contain the specific information requested in your prompt regarding acceptance criteria, a study proving device meets acceptance criteria, sample sizes for test/training sets, data provenance, expert adjudication, MRMC studies, standalone performance, or ground truth establishment.

    The document primarily provides:

    • Device Description and Intended Use: Details the components of the Prime Acetabular Cup System (Acetabular Shells, Liners, Bone Screws) and their intended applications in total hip arthroplasty.
    • Substantial Equivalence Justification: States that the device is substantially equivalent to predicate devices (PROCOTYL® PRIME Acetabular Cup System, K170444) based on identical indications for use, similar materials (for the liner, drawing on K052026), and unchanged design features for shells and screws since K170444.
    • Nonclinical Testing: Lists bench tests performed on the subject device (liner push-out, lever-out, torque-out per ASTM F1820, ASTM STP1301) and references tests performed on the predicate device and deemed applicable (deformation, frictional torque, wear, fatigue, range of motion, screw properties).
    • Clinical Testing: Explicitly states that clinical data was not provided for the subject devices.
    • Biocompatibility: Justifies not performing specific biocompatibility tests on the subject implants as their materials and patient contact are identical to predicate devices.
    • Compatibility Tables: Details compatibility with other MicroPort Orthopedics products.
    • Sterilization Residuals: Discusses previous evaluations and current applicability.

    Therefore, I cannot populate the requested table and answer your questions directly from the provided text. The document does not describe a study with acceptance criteria in the context of clinical performance or diagnostic accuracy, which is implied by your prompt's questions. It focuses on engineering and material equivalence testing for an orthopedic implant.

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    Why did this record match?
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The Stryker Orthopaedic Acetabular Shells for use with the Total Hip Instruments are intended for use in total hip arthroplasty and are intended for either primary or revision total hip arthroplasty. The Stryker Orthopaedic Hip Implant Stems for use with the Total Hip Instruments are intended for use in total or hemi-arthroplasty of the hip and are intended for either primary or revision procedures. The Direct Superior Approach does not change the intended use of the subject devices.

    Indications for Use (Trident PSL Shell, Tritanium Shell, Trident Hemispherical Shells):

    • Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, posttraumatic arthritis or late stage avascular necrosis.
    • Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
    • Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
    • Where bone stock is of poor quality or is inadequate for other reconstructive techniques as indicated by deficiencies of the acetabulum.
      The Trident shells are intended for cementless fixation within the prepared acetabulum.

    Indications for Use (Tritanium Acetabular Shell System):

    • Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, posttraumatic arthritis or late stage avascular necrosis.
    • Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
    • Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
    • Where bone stock is of poor quality or is inadequate for other reconstructive techniques as indicated by deficiencies of the acetabulum.
      The Tritanium Acetabular Shell System is intended for cementless use only.

    Indications for Use (Accolade II Femoral Stem):
    The indications for use for total hip arthroplasty with stems include:

    • Noninflammatory degenerative joint disease, including osteoarthritis and avascular necrosis:
    • Rheumatoid arthritis;
    • Correction of functional deformity;
    • Revision procedures where other treatments or devices have failed; and,
    • Nonunions, femoral neck fractures, and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques.
      Additional indication specific to use of the Accolade II Femoral Stems with compatible Howmedica Osteonics Constrained Liners:
    • When the stem is to be used with compatible Howmedica Osteonics Constrained Liners, the device is intended for use in primary or revision patients at high risk of hip dislocation due to a history of prior dislocation, bone loss, soft tissue laxity, neuromuscular disease, or intra-operative instability.
      Accolade II Femoral Stems are intended for cementless use only and are intended for total and hemiarthroplasty procedures.

    Indications for Use (Secur-Fit Advanced Hip Stem):
    The indications for use for total hip arthroplasty with stems include:

    • Noninflammatory degenerative joint disease, including osteoarthritis and avascular necrosis:
    • Rheumatoid arthritis;
    • Correction of functional deformity;
    • Revision procedures where other treatments or devices have failed; and,
    • Nonunions, femoral neck fractures, and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques.
      Additional indication specific to use of the Secur-Fit Advanced Hip Stems with compatible Howmedica Osteonics Constrained Liners:
    • When the stem is to be used with compatible Howmedica Osteonics Constrained Liners, the device is intended for use in primary or revision patients at high risk of hip dislocation due to a history of prior dislocation, bone loss, soft tissue laxity, neuromuscular disease, or intra-operative instability.
      Secur-Fit Advanced Hip Stems are intended for cementless use only and are intended for total and hemiarthroplasty procedures.

    Indications for Use (Anato Hip Stem):
    The indications for use for total hip arthroplasty with stems include:

    • Noninflammatory degenerative joint disease, including osteoarthritis and avascular necrosis;
    • Rheumatoid arthritis;
    • Correction of functional deformity;
    • Revision procedures where other treatments or devices have failed; and,
    • Nonunions, femoral neck fractures, and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques.
      Additional indication specific to use of the Anato Hip Stem with compatible Howmedica Osteonics Constrained Liners:
    • When the stem is to be used with compatible Howmedica Osteonics Constrained Liners, the device is intended for use in primary or revision patients at high risk of hip dislocation due to a history of prior dislocation, bone loss, soft tissue laxity, neuromuscular disease, or intra-operative instability.
      The Anato Hip Stem is intended for cementless use only and is intended for total and hemiarthroplasty procedures.
    Device Description

    The devices covered by this submission include Stryker Orthopaedics Acetabular Shells, Femoral Stems and Total Hip Instruments. The Instruments consist of Retractors, Cup Impactors, U-Joint Bolt Driver, Alignment Guide, Angled Reamer Handle, Instrument Trays and a Case. All instruments are hand-held surgical instruments used during orthopaedic surgery and are nonsterile, reusable devices. All Class II devices in this submission have been previously determined substantially equivalent in prior 510(k) submissions and are commercially available. The acetabular shells and femoral stems are manufactured from the following materials: titanium (Ti-6Al-4V) alloy, commercially pure (CP) titanium plasma spray, commercially pure titanium and PureFix® hydroxylapatite (HA).

    AI/ML Overview

    This document is a 510(k) premarket notification from Stryker Orthopaedics to the FDA for their Acetabular Shells, Femoral Stems, and Total Hip Instruments for use with the Direct Superior Approach.

    It is important to note that this submission is for a labeling modification to introduce a new surgical approach (Direct Superior Approach) for existing devices, not for a new device requiring extensive performance studies. Therefore, the details requested for acceptance criteria and studies proving device performance (like sample sizes, expert qualifications, etc., which are typically associated with evaluating a new device's diagnostic or predictive performance) are largely not applicable in the context of this specific regulatory submission.

    Here's an attempt to address your request based on the provided document, highlighting what is (and isn't) present:

    1. Table of acceptance criteria and the reported device performance

    The document does not specify quantitative acceptance criteria or report on device performance based on a study, because the submission is for a labeling modification of already cleared and marketed devices. The core of the submission is to demonstrate that the new surgical approach (Direct Superior Approach) does not fundamentally change the intended use, safety, or effectiveness of the previously cleared devices.

    Instead of performance metrics, the document focuses on demonstrating substantial equivalence to predicate devices. This means that the new labeling (for the Direct Superior Approach) does not raise new questions of safety or effectiveness and that the devices, when used with this new approach, are as safe and effective as existing legally marketed predicate devices.

    The "performance" in this context is the general safety and efficacy of the existing devices, which was established in their original 510(k) clearances.

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

    Not applicable. No specific test set to evaluate device performance for a new device was used. The submission focuses on the surgical approach for existing devices.

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

    Not applicable. No new test set requiring expert ground truth establishment for a diagnostic or predictive device was involved. The safety and effectiveness of the devices themselves were established in prior 510(k)s.

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

    Not applicable. There was no test set requiring ground truth 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 is not an AI/diagnostic device submission.

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

    Not applicable. This is not an AI/diagnostic device submission.

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

    Not applicable in the sense of a new performance evaluation for a new device. The "ground truth" for this submission is the established safety and efficacy of the predicate devices.

    8. The sample size for the training set

    Not applicable. No new device or algorithm requiring a training set was involved.

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

    Not applicable. No new device or algorithm requiring a training set was involved.


    Summary of the Study (as per the document):

    The document explicitly states:

    • Non-Clinical Testing: "Performance testing was not required in support of this submission because this submission covers a labeling modification to introduce an additional surgical protocol, Direct Superior Approach."
    • Clinical Testing: "Clinical testing was not required as a basis for substantial equivalence."

    Conclusion of the Study:

    The "study" in this case is the review of the modified labeling and comparison to predicate devices, rather than experimental testing of the device itself.

    The conclusion is that the Stryker Orthopaedics Acetabular Shells, Femoral Stems, and Total Hip Instruments for use with the Direct Superior Approach are substantially equivalent to the predicate devices identified in the premarket notification. This substantial equivalence is based on:

    • The intended use and indications for the implants with the Direct Superior Approach being identical to those of the cleared predicate devices.
    • The materials, design features, and functionality for the components being substantially equivalent to previously cleared predicate devices.
    • The fundamental scientific technology of the modified device (i.e., the surgical instruments for the new approach) not having changed relative to the predicate devices.
    • The material and design of the Total Hip Surgery Instruments for use with the Direct Superior approach being identical to those of the predicate devices cleared for use with other approaches (Posterolateral Approach and Direct Anterior Approach), and their operational principles being similar.

    In essence, the "study" for this submission was a comparative analysis of design, materials, intended use, indications for use, and operational principles between the proposed devices (with the new approach) and their already cleared predicates, confirming that no new safety or effectiveness concerns were raised by adding the Direct Superior Approach to the labeling.

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    K Number
    K142462
    Date Cleared
    2014-11-14

    (73 days)

    Product Code
    Regulation Number
    888.3358
    Reference & Predicate Devices
    Why did this record match?
    Reference Devices :

    K010170, K905258

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use
    • Painful, disabling joint disease of the hip resulting from: degenerative arthritis, . rheumatoid arthritis, posttraumatic arthritis or late stage avascular necrosis.
    • Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other . procedure.
    • . Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
    • Where bone stock is of poor quality or is inadequate for other reconstructive techniques ● as indicated by deficiencies of the acetabulum.

    The Restoration® Anatomic Shell is indicated for cementless use only.

    Device Description

    The Restoration Anatomic Shell is intended for cementless fixation into a prepared acetabulum for either primary or revision Total Hip Arthroplasty. The basic design of the Restoration Anatomic Shell is similar to two other commercially available total hip systems, which are Stryker Orthopaedics' Trident Porous Titanium Acetabular Shell, and DePuy's S-ROM Oblong Cup. The Restoration Anatomic Shell will be available in 14 sizes, 54mm - 80mm diameter in 2mm increments. There will be a left and right shell configuration for each size. The subject device is designed to accept the existing Modular Dual Mobility (MDM) liners. The locking mechanism is identical to the locking mechanism of the predicate Trident Porous Titanium Acetabular Shell. The implant will be made of Ti-6Al-4V ELI alloy (ASTM F136) and will have a porous Commercially Pure (CP)-Ti (ASTM F1580) coating allowing for biological fixation. The inner locking mechanism is positioned eccentrically relative to the outer surface of the shell, thus creating a build-up of solid material intended to be positioned in the superior region of the acetabulum. The area outside the locking mechanism will have a recessed or beveled surface to reduce the amount of implant that is exposed outside of the native acetabulum. The shell will have multiple screw hole options located in the superior and inferior regions of the shell as well as peripheral screw holes located outside the locking mechanism. The Restoration Anatomic Shell is compatible with the optional currently marketed Stryker Orthopaedics Acetabular Dome Hole Plug made from CP Titanium (ASTM F-67).

    AI/ML Overview

    Here's an analysis of the provided text regarding the acceptance criteria and supporting study for the "Restoration Anatomic Shell" hip replacement device:

    It is important to note that this document is a 510(k) Premarket Notification for a medical device. The primary goal of a 510(k) submission is to demonstrate substantial equivalence to a legally marketed predicate device, not necessarily to independently prove the device's efficacy and safety through extensive clinical trials. Therefore, the information provided will reflect this type of regulatory submission, which often relies heavily on non-clinical (bench) testing and comparison to established predicate devices.

    1. Table of Acceptance Criteria and Reported Device Performance

    The document does not explicitly state "acceptance criteria" in a quantitative, pass/fail table format, as one might expect for a software or diagnostic device. Instead, the "acceptance criteria" are implied by the performance characteristics demonstrated through the non-clinical tests, and by the claim of substantial equivalence to predicate devices. The "reported device performance" is largely framed within the context of these non-clinical tests.

    Acceptance Criteria (Implied)Reported Device Performance (Summary from Non-Clinical Testing)
    Mechanical Stability/Retention of Liner: Ability to securely hold the Modular Dual Mobility (MDM) liner, even under deformation. (Implied: comparable to predicate or acceptable industry standards)Push-out Test of a Modular Dual Mobility Liner in a Deformed Shell: Performed to assess the securement of the MDM liner. While specific results are not provided, the claim of substantial equivalence implies acceptable performance. This test would likely evaluate the force required to dislodge the liner, ensuring it remains in place during normal physiological loading and potential stress scenarios.
    Fatigue Resistance/Durability: Ability to withstand cyclical loading over the expected lifespan of the implant, especially for augmented components. (Implied: comparable to predicate or acceptable industry standards)Acetabular Wedge Augment Device Fatigue Model: Performed to assess the long-term durability of any augmented components. Again, specific results are not detailed, but the test's inclusion and the claim of substantial equivalence suggest that the device's fatigue life is considered adequate and comparable to predicate devices.
    Biomaterial Properties (Coating): Adhesion, porosity, and microstructure of the porous coating for biological fixation. (Implied: meets specified ASTM standards and is comparable to predicate for encouraging bone ingrowth)Mechanical Properties of the Tritanium Foam Coating: Evaluated the mechanical characteristics of the coating material (CP-Ti).
    Material Microstructure, Composition, and Trace Elemental Analysis of the Substrate and Surface of the Tritanium Acetabular Shells: Confirmed the material properties (Ti-6Al-4V ELI alloy for substrate, porous CP-Ti for coating) and composition, ensuring it meets specified ASTM standards (ASTM F136, ASTM F1580, ASTM F-67 for optional plug) and is biocompatible.
    Structural Characteristics of the Tritanium Foam Coating: Assessed the specific architectural features of the porous coating, which are crucial for promoting biological fixation and long-term stability. The claim of substantial equivalence implies these properties are suitable for cementless fixation.
    Overall Design and Functional Equivalence: Similar intended use, indications, design, materials, performance characteristics, and operational principles to predicate devices.Summary of Technological Characteristics: "Device Comparisons show that the Restoration Anatomic Shell is substantially equivalent to its predicates in terms of intended use, indications, design, materials, performance characteristics and operational principles." This is the overarching "stated performance."

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

    Since the study relies on non-clinical (bench) testing, the concept of a "test set" in the sense of patient data is not applicable. For non-clinical tests, the "sample size" would refer to the number of physical device units or components tested for each specific test (e.g., how many shells were subjected to push-out, or how many fatigue samples were run). This specific number is not provided in the summary.

    Data Provenance: The data is generated from laboratory testing performed by the manufacturer, Stryker Orthopaedics. It is inherently prospective in the sense that the tests were conducted specifically for this submission, using newly manufactured devices or components. The concept of "country of origin of the data" typically relates to clinical studies; for bench testing, it refers to the location of the testing facility, which would likely be in the US given the submitting company's location (Mahwah, NJ) and the FDA submission.

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

    This question is not applicable to this 510(k) submission, as no clinical test set relying on expert ground truth was performed. The evaluation is based on engineering and materials science principles and direct comparison to predicate devices, not on human interpretation of clinical data.

    4. Adjudication Method for the Test Set

    Not applicable, as no clinical test set requiring expert adjudication was performed.

    5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study was Done

    No, a Multi-Reader Multi-Case (MRMC) comparative effectiveness study was not done. This type of study assesses how human readers perform with and without AI assistance, which is irrelevant for a mechanical implant device like a hip shell. The submission explicitly states: "Clinical testing was not required as a basis for substantial equivalence."

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

    This question is not applicable. The "Restoration Anatomic Shell" is a physical medical device, not a software algorithm or AI. Therefore, there is no "standalone algorithm" performance to evaluate.

    7. The Type of Ground Truth Used

    For this device, the "ground truth" for the non-clinical tests is established by:

    • Engineering specifications and standards: Adherence to ASTM (American Society for Testing and Materials) standards for materials (e.g., F136, F1580, F-67).
    • Established mechanical testing protocols: Performance measurements against defined biomechanical limits or within expected ranges identified through established engineering principles and prior device testing.
    • Comparison to predicate devices: The "ground truth" for substantial equivalence is primarily the performance and characteristics of the legally marketed predicate devices (Trident Porous Titanium Acetabular Shell and S-ROM Oblong Cup). The subject device must perform similarly or better in relevant non-clinical tests to be considered substantially equivalent.

    8. The Sample Size for the Training Set

    This question is not applicable. There is no "training set" in the context of this device, as it is a physical implant and not a machine learning model.

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

    Not applicable, as there is no training set for this device.

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