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510(k) Data Aggregation

    K Number
    K191299
    Date Cleared
    2019-06-14

    (31 days)

    Product Code
    Regulation Number
    878.5010
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    Silhouette Featherlift / Silhouette Lift

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

    Silhouette Lift Sutures are for use in Midface suspension surgery to fixate the cheek sub dermis in an elevated position.

    Device Description

    Silhouette Lift Sutures are non-absorbable, sterile sutures.

    SMS 01-PP-3.0.1-B-S, SMS 03-PP-3.0.1-CL and SMS 06-PP-3.0.1-B-L are made of 40.5 cm USP 3.0 size polypropylene suture with 6 cones made of a resorbable material (Lactide / Glycolyde 82:18) affixed to the suture. SMS 02-PP-2.0.1-B is a 37.3cm USP 2.0 size polypropylene suture with 10 cones made of resorbable material (Lactide / Glycolyde 82:18) affixed to the suture.

    Attached to one end of each of the sutures is a straight needle and to the opposite end is a ½ circle taper needle.

    All products are supplied sterile (EO) for single use only. Silhouette Lift Sutures elicit a minimal acute inflammatory reaction in tissue that is followed by gradual encapsulation.

    AI/ML Overview

    Here's an analysis of the provided text regarding the acceptance criteria and study for the Silhouette Lift Suture, presented in the requested format:

    1. Table of Acceptance Criteria and Reported Device Performance

    Acceptance CriteriaReported Device Performance
    Shelf life stability (18 months)Results obtained in the stability study were in accordance with the acceptance criteria defined in the protocol and demonstrated continued sterility, package integrity, and device functionality over the 18 months requested.
    Peak Tensile Force at Break (USP )Confirmed compliance at the end of shelf life.
    Monofilament Diameter (USP )Confirmed compliance at the end of shelf life.
    Swaging Test between Monofilament and (USP )Confirmed compliance at the end of shelf life.
    Sterility (USP )Confirmed compliance at the end of shelf life.

    2. Sample Size for the Test Set and Data Provenance

    The provided document does not specify the sample size used for the stability study (the test set).

    The data provenance is from internal testing conducted by Silhouette Lift Inc. (the manufacturer) as part of their 510(k) submission. The study type is prospective as it's a stability study assessing device performance over time.

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

    This information is not provided in the document. The tests performed are standardized USP (United States Pharmacopeia) methods for material and sterility properties, which typically rely on laboratory analyses and calibrated equipment rather than expert consensus for ground truth establishment.

    4. Adjudication Method for the Test Set

    This information is not applicable/not provided. The assessment of the device's physical and sterility properties is based on objective laboratory measurements against predefined USP standards, not on subjective interpretations requiring adjudication.

    5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, and Effect Size

    No, a Multi-Reader Multi-Case (MRMC) comparative effectiveness study was not done. The study was focused on extending the shelf life of an existing medical device, not on assessing its effectiveness (clinical outcomes) or comparing human reader performance with and without AI assistance. The document explicitly states: "No clinical testing was conducted as part of this submission."

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

    No, a standalone (algorithm only) performance study was not done. The device is a surgical suture, not an AI software/algorithm.

    7. The Type of Ground Truth Used

    The ground truth used for the device performance evaluation was based on established USP (United States Pharmacopeia) specifications for surgical sutures and sterility. These are objective, predefined standards for material properties and an absence of microbial contamination.

    8. The Sample Size for the Training Set

    This information is not applicable/not provided. The context is not machine learning or AI, so there is no "training set." The study is a stability test for a physical medical device.

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

    This information is not applicable/not provided as there is no training set in this context.

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    K Number
    K171005
    Date Cleared
    2017-05-03

    (29 days)

    Product Code
    Regulation Number
    878.5010
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    Silhouette Featherlift

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

    Silhouette Lift Sutures are for use in Midface suspension surgery to fixate the cheek sub dermis in an elevated position.

    Device Description

    Silhouette Lift Sutures are non-absorbable, sterile sutures.

    SMS 01-PP-3.0.1-B-S, SMS 03-PP-3.0.1-CL and SMS 06-PP-3.0.1-B-L are made of 40.5 cm USP 3.0 size polypropylene suture with 6 cones made of a resorbable material (Lactide / Glycolyde 82:18) affixed to the suture. SMS 02-PP-2.0.1-B is a 37.3cm USP 2.0 size polvpropvlene suture with 10 cones made of resorbable material (Lactide / Glycolyde 82:18) affixed to the suture.

    Attached to one end of each of the sutures is a straight needle and to the opposite end is a ½ circle taper needle.

    All products are supplied sterile (EO) for single use only. Silhouette Lift Sutures elicit a minimal acute inflammatory reaction in tissue that is followed by gradual encapsulation.

    AI/ML Overview

    This document is a 510(k) premarket notification for the Silhouette Lift Suture, which is a medical device used in midface suspension surgery. The purpose of this notification is to demonstrate that the Silhouette Lift device is substantially equivalent to a previously cleared predicate device, the Featherlift Silhouette Suture (K060414), despite a change to its Instructions for Use.

    Here's an analysis of the provided information concerning acceptance criteria and supporting studies:

    1. Table of Acceptance Criteria and Reported Device Performance

    The document does not explicitly present a table of "acceptance criteria" and "reported device performance" in the typical sense for a new device's efficacy or safety study. Instead, it focuses on demonstrating substantial equivalence to a predicate device.

    The "acceptance criteria" in this context are implicitly that the modified device remains substantially equivalent to the predicate device, and that the change to the Instructions for Use does not alter its safety, effectiveness, or fundamental scientific technology. The "reported device performance" is a comparative analysis against the predicate device based on specific characteristics.

    Below is a table summarizing the comparison for substantial equivalence, which serves as the "performance" data to meet the implicit acceptance criteria of being equivalent.

    CharacteristicSilhouette Lift (K171005)FeatherLift Silhouette Suture (K060414)Significant Difference?
    Overall DesignPolypropylene monofilament with LG 8218 conesPolypropylene monofilament with LG 8218 conesNo Difference
    Product Material(s)8218 poly(glycolide/Llactide (cones); and polypropylene monofilament8218 poly(glycolide/Llactide (cones); and polypropylene monofilamentNo Difference
    Product design and method of operationPolypropylene monofilament with LG 8218 conesPolypropylene monofilament with LG 8218 conesNo Difference
    Method of ConstructionExtruded polypropylene monofilament and injection molded PLG 8218 conesExtruded polypropylene monofilament and injection molded PLG 8218 conesNo Difference
    Sterilization ProcessEO SterilizationEO SterilizationNo Difference
    Outline of surgical procedureSurgical insertion (0.5 inch) in the scalp; suture and needle inserted from entry site to below the jaw line; cones grab and hold facial tissue in elevated position.Surgical insertion (0.5 inch) in the scalp; suture and needle inserted from entry site to below the jaw line; cones grab and hold facial tissue in elevated position.No Difference
    Environment required for insertionPhysician's office or out-patient surgical center.Physician's office or out-patient surgical center.No Difference
    Intended Use/Indications for UseFor use in midface suspension surgery to fixate the cheek sub dermis in an elevated position.For use in midface suspension surgery to fixate the cheek sub dermis in an elevated position.Identical
    Technological CharacteristicsUnchanged from K060414Described in K060414Unchanged

    The key acceptance criterion is that there are no significant differences in the fundamental aspects of the device that would impact safety or effectiveness, outside of the specific change to the Instructions for Use. The study presented here is the comparative analysis, which demonstrates "no difference" across all critical technological characteristics and intended use.

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

    This document describes a Special 510(k) where the modification is limited to changes made in the directions for use, and there are "No changes...to the intended use or fundamental scientific technology." Therefore, there is no new test set, clinical data, or sample size provided for a new study in this document. The submission relies on establishing substantial equivalence to the predicate device (K060414) based on its existing clearance.

    The data provenance for the original clearance (K060414) is not detailed in this specific document.

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

    Not applicable. As noted above, this submission is not presenting new study data requiring ground truth establishment by experts. It's a "Special 510(k)" relying on prior clearance and demonstrating no significant change to the device itself.

    4. Adjudication Method for the Test Set

    Not applicable, as no new test set is presented.

    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 device is a surgical suture, not an AI-powered diagnostic or assistive tool. No MRMC study is relevant to this submission.

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

    Not applicable. This device is a surgical suture, not an algorithm, so standalone performance is not relevant.

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

    Not applicable to this specific submission, as it relies on substantial equivalence to a predicate device. For the original predicate clearance (K060414), it would have likely involved a combination of bench testing, possibly animal studies, and potentially clinical data (though not always required for Class II devices), with "ground truth" derived from standard surgical practice, material science, and clinical outcomes for similar products.

    8. The Sample Size for the Training Set

    Not applicable. This is not an AI/ML device, and no new training set is discussed or implied.

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

    Not applicable. This is not an AI/ML device, and no training set is discussed.

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