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510(k) Data Aggregation

    K Number
    K170908
    Device Name
    PK AIM
    Manufacturer
    Date Cleared
    2017-05-19

    (52 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    N/A
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK AIM is indicated for open, general surgery (including plastic and re-constructive) or in any procedure in which cutting, vessel ligation (sealing and cutting), coagulation, grasping and dissection is performed. The device has been designed to seal and cut vessels (up to and including 3 mm in diameter), tissue bundles, and lymphatics when used with the Olympus ESG-400 Generator.

    This device is not intended to be used for tubal ligation or female sterilization.

    Device Description

    Both predicate PK AIM and proposed PK AIM devices can be described as 2 in 1 devices with a pencil type handle that combines the technologies of a monopolar pencil and a bipolar forceps. The device has buttons that allow hand activation and a sliding toggle switch to allow the surgeon to switch between a forceps, and a pencil device. Foot pedals connected to the generator are also available to allow for foot pedal activation of the device. Both predicates (Olympus OFJ and Olympus PK AIM connect/plug into the Olympus ESG-400 generator (K141225). The generator and subject device make up a medical electrical system. The PK AIM instrument is to be used only with the Olympus ESG-400 Generator.

    The proposed device is comprised of a mixture of plastics, metals heatshrink and epoxy.

    AI/ML Overview

    The provided text describes a 510(k) premarket notification for the "PK AIM" device, a cutting and coagulation instrument. The submission aims to expand the device's intended use based on its substantial equivalence to previously cleared predicate devices.

    However, the provided document DOES NOT contain the type of detailed information requested regarding specific acceptance criteria, comprehensive device performance data tables, sample sizes for training and test sets, expert qualifications, ground truth establishment methods, or the results of MRMC studies that would typically be found in a clinical study report or a more detailed performance evaluation section of a submission.

    The document primarily focuses on demonstrating substantial equivalence by comparing the proposed device's design, materials, and technological characteristics to its predicates and summarizing performance testing that supports the expanded indications.

    Therefore, I cannot fully complete all sections of your request based solely on the provided text. I will fill in what information is available and indicate where the information is missing.


    Request Details and Available Information from Document:

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

    • The document does not explicitly state quantitative acceptance criteria (e.g., "sealing success rate must be > X%") or provide a detailed table of reported device performance against such criteria.
    • Instead, it states that "All study endpoints were met" for lymphatic sealing and "Bench Ex Vivo Design Verification testing demonstrated that the requirements defined in the protocol were met."
    • For the lymphatic sealing study, the reported performance is qualitative:
      • Proposed PK AIM: "All vessels sealed with the proposed PK AIM test article had no tissue sticking and no charring. All vessel seals had no leakage of lymph and had complete hemostasis immediately and at 30 seconds to one minute post seal."
      • Predicate OFJ: "All vessel seals with the OFJ control article had no tissue sticking and no charring. All vessel seals had no leakage of lymph and had complete hemostasis immediately and at 30 seconds to one minute post seal."
    • The conclusion for the device's equivalence to the predicate OFJ in lymphatic sealing is "The proposed PK AIM test article performed equivalent to the predicate OFJ control article as evaluated by the study surgeon."
    • For the bench/ex-vivo tissue study, the conclusion is "This bench ex vivo tissue test data confirms that the proposed PK AIM tissue performance is substantially equivalent to the predicate Olympus Thunderbeat OFJ."
    Acceptance Criteria (Explicitly Stated in Document)Reported Device Performance (as stated in document)
    Not explicitly quantitative criteria.Lymphatic Sealing (in vivo porcine model):
    Equivalence to predicate OFJ.* Proposed PK AIM: No tissue sticking, no charring, no leakage of lymph, complete hemostasis immediately and at 30 seconds to one minute post seal.
    * Predicate THUNDERBEAT OFJ (Control): No tissue sticking, no charring, no leakage of lymph, complete hemostasis immediately and at 30 seconds to one minute post seal.
    "All study endpoints were met."* "The proposed PK AIM test article performed equivalent to the predicate OFJ control article as evaluated by the study surgeon."
    Not explicitly quantitative criteria.Bench/ex-vivo tissue study (swine liver, swine kidney, bovine cardiac muscle):
    "requirements defined in the protocol were met."* "This bench ex vivo tissue test data confirms that the proposed PK AIM tissue performance is substantially equivalent to the predicate Olympus Thunderbeat OFJ."
    Substantial equivalence to predicate devices.* "In summary, bench testing confirmed that the proposed Olympus PK AIM is substantially equivalent to the predicate Olympus PK AIM and Olympus OFJ devices and presents no new questions of safety or efficacy." (General conclusion regarding overall testing for substantial equivalence, including performance against predicate devices.)

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

    • Lymphatic Sealing Study (Test Set):
      • Sample Size: 1 animal (porcine model).
        • 15 mesenteric lymph vessels sealed with the test device (PK AIM).
        • 16 mesenteric lymph vessels sealed with the control device (Thunderbeat OFJ).
      • Data Provenance: Acute GLP (Good Laboratory Practice) study conducted by American Preclinical Services (APS) in Minneapolis, MN (USA). This is a prospective animal study.
    • Bench/ex-vivo tissue study (Test Set):
      • The document states "ex-vivo swine liver, swine kidney and bovine cardiac muscle tissue" but does not specify the number of tissue samples or seals performed.
      • Data Provenance: GLP ex-vivo study conducted by American Preclinical Services (APS). This is a prospective bench study.

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

    • Number of Experts: One "study surgeon."
    • Qualifications of Experts: The document states "The study surgeon evaluated each seal..." but does not provide details on the qualifications or experience of this surgeon.

    4. Adjudication method for the test set

    • The document states: "The study surgeon evaluated each seal immediately post seal and then again 30 seconds to one minute post seal."
    • This suggests a single evaluator (the study surgeon). Therefore, there was no multi-expert adjudication method mentioned (e.g., 2+1 or 3+1). The "ground truth" seems to be based on the real-time observation and assessment by the single study surgeon during the procedure.

    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 MRMC study was done. This document describes the testing of an electrosurgical device for cutting and coagulation, not an AI-assisted diagnostic tool.

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

    • Not applicable. This is a medical device (electrosurgical instrument), not an algorithm. The "performance" is the physical effect of the device on tissue, assessed by a human surgeon.

    7. The type of ground truth used

    • For the Lymphatic Sealing Study: Real-time expert observation and assessment by a single study surgeon (clinical endpoint observation: integrity of seal, tissue sticking, char, leakage of lymph, hemostasis). This is a direct physical outcome as ground truth.
    • For the Bench/ex-vivo tissue study: Comparison of tissue changes from the test device to the predicate, likely assessed visually or histologically, and confirmed against defined protocol requirements (design verification). This is a direct physical outcome comparison.

    8. The sample size for the training set

    • This information is not applicable/not provided as this is a physical device submission, not an AI/machine learning device that would require training data. The "training" for this device would be its design and manufacturing processes, which are validated, not "trained" in the sense of machine learning.

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

    • Not applicable, as this is not an AI/machine learning device.
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    K Number
    K163373
    Device Name
    PK AIM
    Manufacturer
    Date Cleared
    2016-12-12

    (11 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK AIM is intended for mono polar cutting & coagulation, grasping, bipolar coagulation of selected soft tissues and sealing vessels up to and including 3.0 mm in diameter during electro surgery. This device is not intended to be used for tubal ligation or female sterilization.

    Device Description

    Both predicate and proposed PK AIM devices can be described as 2 in 1 devices with a pencil type handle that combines the technologies of a monopolar pencil and a bipolar forceps. The device has buttons that allow hand activation and a sliding toggle switch to allow the surgeon to switch between a forceps, and a pencil device. Foot pedals connected to the generator are also available to allow for foot pedal activation of the device. The proposed device plugs into the Olympus ESG-400 generator (K141225). The generator and device make up a medical electrosurgical system. The instrument is to be used only with the Olympus ESG-400 Generator. As a result of the PK AIM cable modifications which are the subject of this submission, no modifications were required or made to the ESG-400 Generator.

    The proposed device is comprised of a mixture of plastics, metals, heatshrink and epoxy. The predicate Olympus PK AIM passed all applicable biocompatibility testing and additional information was provided within in the original PK AIM K152219 for any patient contacting materials that contain colorants. Except for the cable design modification that is being implemented to address a capacitive coupling concern, the subject Olympus PK AIM and predicate Olympus PK AIM are physically identical no other design or material changes.

    AI/ML Overview

    The provided text is a 510(k) summary for a medical device (Olympus PK AIM) and focuses on demonstrating substantial equivalence to a predicate device based on bench testing. It does not describe a study that involves human readers, AI assistance, or complex ground truth establishment methods typically found in studies for AI/ML-based diagnostic devices.

    Therefore, many of the requested details, such as sample sizes for test/training sets, expert qualifications, adjudication methods, MRMC studies, standalone AI performance, and the nature of ground truth beyond engineering specifications, are not applicable to the information contained within this document.

    The document describes performance testing of the device itself (electrical, physical, mechanical characteristics), not an AI algorithm's diagnostic performance.

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

    1. Acceptance Criteria and Reported Device Performance

    The document lists various tests performed to ensure the device meets its specifications. The general statement is that "All performance testing passed or met prescribed acceptance criteria." Specific quantitative results are not provided in this summary, but the categories of testing and their objectives serve as the acceptance criteria.

    DescriptionSpecification/Objective (Acceptance Criteria)Reported Device Performance
    Cable/Cord LengthMeet length specificationPassed/Met Criteria
    Electrical FunctionalityGenerator confirmationPassed/Met Criteria
    Package TestingISTA-2A, ASTMD4169-09Passed/Met Criteria
    IEC 60601Meet relevant requirementsPassed/Met Criteria
    Label/Package damageVisual inspectionPassed/Met Criteria
    Bubble LeakASTM-F2906-11Passed/Met Criteria
    ContinuityMeet specificationPassed/Met Criteria
    Hi-PotMeet specificationPassed/Met Criteria
    HF LeakageMeet monopolar HF leakage from bipolar electrodesPassed/Met Criteria
    Electrical CharacterizationMeet internal comparable power outputsPassed/Met Criteria

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

    • Sample Size for Test Set: Not specified quantitatively. The document states "Summary of bench, Performance Testing (no clinical testing was conducted)." This implies that samples of the device were subjected to the physical and electrical tests listed, but specific numbers of units tested are not provided.
    • Data Provenance: Not applicable in the context of clinical data. This is bench testing of a physical medical device.

    The study described is retrospective in the sense that the testing was performed on the device prototypes/pre-production units to demonstrate substantial equivalence for regulatory submission.

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

    Not applicable. "Ground truth" in this context refers to the defined engineering specifications and international standards which the device must meet, rather than expert interpretation of medical images or conditions. The tests measure objective physical and electrical properties.

    4. Adjudication method for the test set

    Not applicable. Testing involves engineering and laboratory measurements against predefined specifications, not human adjudication of subjective interpretations.

    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 an electrosurgical tool, not a diagnostic imaging device involving human readers or AI assistance in interpretation. No MRMC study was performed.

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

    Not applicable. This device does not contain an AI algorithm. Its performance is related to its physical and electrical functions, not computational interpretations.

    7. The type of ground truth used

    The "ground truth" for this device's performance testing is established by engineering specifications, international performance standards (e.g., ISO, IEC, ASTM), and comparison to the established performance of the predicate device. For instance, HF leakage must meet a certain maximum value as per a standard, or power outputs must be comparable to the predicate.

    8. The sample size for the training set

    Not applicable. This is not an AI/ML device that requires a training set.

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

    Not applicable. There is no training set for this device.

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    K Number
    K161825
    Device Name
    PK AIM
    Manufacturer
    Date Cleared
    2016-09-26

    (87 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK AIM is intended for mono polar cutting & coagulation, grasping, bipolar coagulation of selected soft tissues and sealing vessels up to and including 3.0 mm in diameter during electro surgery. This device is not intended to be used for tubal ligation or female sterilization.

    Device Description

    Both predicate and proposed PK AIM devices can be described as 2 in 1 devices with a pencil type handle that combines the technologies of a monopolar pencil and a bipolar forceps. The device has buttons that allow hand activation and a sliding toggle switch to allow the surgeon to switch between a forceps, and a pencil device. Foot pedals connected to the generator are also available to allow for foot pedal activation of the device. The proposed device plugs into the Olympus ESG-400 generator (K141225). The generator and device make up a medical electrical system. The instrument is to be used only with the Olympus ESG-400 Generator.

    The proposed device is comprised of a mixture of plastics, metals heatshrink and epoxy.

    AI/ML Overview

    This document describes a 510(k) premarket notification for the PK AIM electrosurgical cutting and coagulation device. The submission aims to demonstrate substantial equivalence to existing predicate devices, specifically for the additional claim of sealing vessels up to 3.0 mm in diameter.

    Here's an analysis of the provided information regarding acceptance criteria and the supporting study:

    1. Table of Acceptance Criteria and Reported Device Performance:

    The document does not explicitly state formal "acceptance criteria" with numerical thresholds, as would be common for diagnostic AI/ML devices with performance metrics like sensitivity, specificity, or AUC. Instead, the performance testing focuses on demonstrating that the subject PK AIM is substantially equivalent to its predicates, particularly for the new vessel sealing claim, meaning its performance is comparable and raises no new safety or effectiveness concerns.

    However, we can infer some performance metrics from the Summary of Performance Testing section:

    Performance AspectAcceptance Criteria (Inferred/Implied)Reported Device Performance (PK AIM)
    Vessel Sealing CapabilitySeal arteries within a certain size range.Sealed 1.00 mm to 3.49 mm size arteries.
    Burst Pressure of Sealed ArteriesStatistically equivalent burst pressures to the predicate device and exceed a certain threshold (e.g., 360 mmHg).Burst pressures of sealed arteries were statistically equivalent to the predicate PKS OMNI. Burst pressure of sealed arteries exceeded 360 mmHg.
    Thermal Spread (Acute Study)Qualitative assessment of thermal damage comparable to predicate.Evaluated thermal spread in a swine model. (No specific quantitative metric provided, but implied to be acceptable given the "no differences" conclusion in the chronic study).
    Qualitative Sealing Characteristics (Acute Study)Sealing characteristics comparable to predicate.Evaluated qualitative sealing characteristics in a swine model. (No specific quantitative metric provided, but implied to be acceptable).
    Thermal Imaging (Acute Study)Collection of thermal imaging data.Provided collection of thermal imaging while sealing vessels. (No performance metric, but rather a data collection).
    Thermal Spread (Chronic Study)Negligible or acceptable thermal damage/collateral effects after 21 days, comparable to predicate.Evaluated thermal spread in a swine model. Necropsy pathology of post-splenectomy and ovariectomy sealed vessel sites showed no differences between sealing performed by test and control devices. This indicates acceptable long-term thermal effects.
    Qualitative Sealing Characteristics (Chronic Study)Sealing characteristics maintained for 21 days, comparable to predicate.Evaluated qualitative sealing characteristics. Necropsy pathology showed no differences between sealing performed by test and control devices.
    Animal Survival (Chronic Study)Animals survive a minimum of 21 days with acceptable health.11 animals survived a minimum of 21-days following the surgical procedure. Their health was deemed acceptable prior-to, during, and following the 21-day survival period at which time they were euthanized and grossly examined.
    Overall ComparisonDemonstrated similar functionality to control device for sealing arteries, veins, & AV bundles up to 3mm.The test results concluded that the subject PK AIM test article demonstrated similar functionality to the control article (Gyrus ACMI (PKS) OMNI) for sealing arteries, veins and artery vein bundles up to 3mm in diameter. The device was found to be substantially equivalent with no new issues of safety or effectiveness.

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

    The studies described are in vivo animal studies and ex vivo bench testing, not human patient data.

    • Ex Vivo Bench Testing:

      • Sample Size: Not explicitly stated as a total number of vessels, but it confirmed sealing of 1.00 mm to 3.49 mm size arteries.
      • Data Provenance: Laboratory bench testing. (No country of origin specified, but typically conducted internally or at specialized testing facilities).
      • Retrospective/Prospective: Prospective.
    • Acute GLP Study (Swine Model):

      • Sample Size: Quantities of 11 and 12 blood vessels were sealed by the subject PK AIM and predicate PK OMNI, respectively.
      • Data Provenance: Swine model, likely a controlled laboratory setting (GLP - Good Laboratory Practice implies a standardized, prospective study).
      • Retrospective/Prospective: Prospective.
    • Chronic GLP Study (Swine Model):

      • Sample Size: 11 animals survived a minimum of 21 days. The number of vessels sealed per animal is not specified but would be multiple.
      • Data Provenance: Swine model, controlled laboratory setting (GLP).
      • Retrospective/Prospective: Prospective.

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

    The document does not describe the use of human experts to establish "ground truth" in the context of diagnostic performance (e.g., radiologists reviewing images). Instead, the studies involve direct observation, measurement, and pathological analysis by scientific personnel.

    • Ex Vivo Bench Testing: Ground truth is established by objective measurements (e.g., visual confirmation of sealing, burst pressure measurements using pressure gauges/equipment). This does not involve expert consensus in the human interpretation sense.
    • Acute and Chronic GLP Studies:
      • Histopathology Report: A Histopathology Report is attached to the acute study, implying pathological assessment. This would typically be performed by a veterinary pathologist or similar qualified expert in animal tissue analysis. The number of pathologists is not specified.
      • Necropsy Pathology: A necropsy pathology of post-splenectomy and ovariectomy sealed vessel sites was performed in the chronic study. This would also be conducted by a veterinary pathologist. The number of pathologists is not specified.
      • Animal Health Report: An Animal Health Report attached to the chronic study, suggesting assessment by a veterinarian or animal care expert.
      • Qualifications: "GLP Study" implies that all personnel involved in the study (including pathologists and veterinarians) would meet specific qualifications and adhere to good laboratory practice standards.

    4. Adjudication Method for the Test Set:

    Not applicable in the AI/ML diagnostic sense. The studies rely on objective measurements and pathological assessments, where "adjudication" between human readers is not a concept employed. Discrepancies in pathological findings, if any, would be resolved through standard pathology practices (e.g., review by a senior pathologist, consensus discussion).

    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 an electrosurgical instrument, not an AI/ML diagnostic tool intended to assist human readers in interpreting data. Therefore, an MRMC study and analysis of human reader improvement with AI assistance are not relevant to this submission.

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

    Not applicable. The PK AIM is a physical surgical device, not a software algorithm. Its performance is inherent to the device itself.

    7. The Type of Ground Truth Used:

    • Ex Vivo Bench Testing:
      • Direct Physical Measurement: Burst pressure of sealed arteries, direct observation of sealing, measurement of artery size.
    • Acute and Chronic GLP Studies (Swine Model):
      • Pathology: Gross examination, histopathology (microscopic examination of tissue samples), necropsy pathology.
      • Outcomes Data: Animal survival, qualitative assessment of health, comparison of sealed vessel sites to control.

    8. The Sample Size for the Training Set:

    Not applicable. This is not an AI/ML device that requires a training set. The "training" for the device's functionality comes from its engineering design and manufacturing.

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

    Not applicable, as there is no training set for an AI/ML algorithm.

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    K Number
    K152219
    Device Name
    PK AIM
    Manufacturer
    Date Cleared
    2015-12-17

    (132 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK AIM device is intended for monopolar cutting as well as grasping, manipulating and bipolar coagulation of selected soft tissues during electrosurgery. This device is not intended to be used for tubal ligation or female sterilization.

    Device Description

    This 2 in 1 device has a pencil type handle and combines the technologies of a monopolar pencil and a bipolar forceps. The device has buttons that allow hand activation and a sliding toggle switch to allow the surgeon to switch between a forceps, and a pencil device. Foot pedals connected to the generator are also available to allow for foot pedal activation of the device. The proposed device plugs into the Olympus ESG-400 generator (K141225). The generator and device make up a medical electrical system. The instrument is to be used only with the Olympus ESG-400 Generator. The proposed device is comprised of a mixture of plastics, metals, heatshrink and epoxy.

    AI/ML Overview

    I am sorry, but the provided text does not contain the detailed information needed to answer your request about the acceptance criteria and the study proving the device meets them. The document is a 510(k) premarket notification summarizing the device, its intended use, comparison to predicate devices, and general performance testing for regulatory approval.

    Here's a breakdown of what's missing:

    • Specific Acceptance Criteria and Reported Performance: While various tests are listed (Dimensional Measurements, Expected Forces, Overall Design Testing, Biocompatibility, Packaging, ex-vivo bench top testing), the document does not report specific quantitative acceptance criteria or the numerical results/performance metrics for the PK AIM device. It simply states "All devices tested met specification and were graded as Pass" or "All devices passed ISO 10993 acceptance criteria and were graded as Pass," or "All ex-vivo results showed substantially equivalent results to the predicate devices."
    • Study Design Details: The document mentions "ex-vivo bench top testing" but provides no details on:
      • Sample size used for the test set.
      • Data provenance (country of origin, retrospective/prospective).
      • Number or qualifications of experts.
      • Adjudication method.
      • MRMC comparative effectiveness study.
      • Standalone performance.
      • Type of ground truth used.
      • Sample size for the training set (if applicable, as this is a physical device, not an AI/ML diagnostic).
      • How ground truth for the training set was established.

    The document focuses on demonstrating substantial equivalence to existing predicate devices based on intended use, design, and scientific technology, supported by general performance testing results that "met specification" or were "substantially equivalent." It does not provide the detailed study information you've requested.

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    K Number
    K142350
    Device Name
    PK J-HOOK
    Manufacturer
    Date Cleared
    2015-01-08

    (139 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK J-Hook is indicated for resection and coagulation of soft tissue and blood vessels in laparoscopic and general surgical procedures when used with the Olympus ESG-400 Generator.

    Device Description

    The PK J-Hook is a bipolar electrosurgical instrument with the capability to cut and coagulate soft tissue and blood vessels in laparoscopic and general surgery. The instrument will pass through a 5mm cannula or through an operating laparoscope working channel of 5mm or larger diameter. The device has an active "J" shaped tip and is activated via buttons on the handle, or by a foot pedal. The proposed device plugs into the Olympus ESG-400 generator (K141225). The generator and device make up a medical electrical system. The instrument is to be used only with the Gyrus ESG-400 Generator.

    AI/ML Overview

    This document describes a 510(k) premarket notification for the "PK J-Hook," an electrosurgical cutting and coagulation device. The purpose of this notification is to demonstrate substantial equivalence to a legally marketed predicate device. This type of regulatory submission does not involve proving the device meets acceptance criteria in the same way an AI/ML medical device would be evaluated for its diagnostic or prognostic accuracy. Instead, it focuses on demonstrating that the new device is as safe and effective as a previously approved device.

    Therefore, many of the requested categories for acceptance criteria and study details for an AI/ML device are not applicable to this 510(k) submission. Below, I will address the applicable points and explain why others cannot be answered from the provided text.

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

    For a 510(k) for an electrosurgical device, the "acceptance criteria" are typically related to meeting established performance standards for electrosurgical devices and demonstrating equivalence to a predicate device across various parameters. The reported performance is generally a confirmation that the device meets these standards and functions equivalently.

    Acceptance Criteria CategoryReported Device Performance
    Dimensional MeasurementsConfirmed
    Cutting & CoagulationEquivalency to predicate demonstrated
    Expected Forces on DevicesConfirmed
    Design Feature TestingRotation and button activation confirmed
    Shelf LifeThree (3) years
    SterilizationEthylene oxide method confirmed effectiveness
    BiocompatibilityPassing results confirmed for all patient contact materials
    Compliance to StandardsConfirmed compliance with listed ISO and IEC standards
    Intended UseMatches predicate and supports stated indication

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

    The document mentions "performance tests" and "bench testing." These are likely laboratory tests on physical samples of the device. The exact sample size for these tests is not specified in the provided text. The data provenance is internal testing by Gyrus ACMI, Inc. specific to the device being submitted. It is prospective testing of their device samples.

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

    This concept is not directly applicable to a 510(k) for an electrosurgical device. "Ground truth" in this context would be established by objective physical measurements and adherence to engineering and medical device standards rather than expert clinical consensus on interpretations or outcomes. The performance tests would be evaluated against pre-defined engineering specifications and relevant ISO/IEC standards.

    4. Adjudication method for the test set

    Not applicable in the context of this 510(k) submission for an electrosurgical device. Performance is assessed against objective engineering and safety standards, not by an adjudication process as would be used for subjective interpretations or diagnostic outcomes.

    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/ML device, and no MRMC study was conducted.

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

    Not applicable. This is not an AI/ML device.

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

    The "ground truth" for the performance tests would be defined by engineering specifications, established medical device standards (e.g., ISO, IEC), and objective physical measurements. For example, for "cutting and coagulation equivalency," the ground truth would be the measurable performance of the predicate device under controlled laboratory conditions. For "biocompatibility," the ground truth is defined by the passing criteria of the ISO 10993 series of standards.

    8. The sample size for the training set

    Not applicable. This is not an AI/ML device and does not have a "training set."

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

    Not applicable. This is not an AI/ML device.

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    K Number
    K142289
    Device Name
    PK Spatula
    Manufacturer
    Date Cleared
    2014-12-31

    (135 days)

    Product Code
    Regulation Number
    878.4400
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The PK Spatula is indicated for resection and coagulation of soft tissue and blood vessels in laparoscopic and general surgical procedures when used with the Olympus ESG-400 Generator.

    Device Description

    The PK Spatula is a bipolar electrosurgical instrument with the capability to cut and coagulate soft tissue and blood vessels in laparoscopic and general surgery. The instrument will pass through a 5mm cannula or through an operating laparoscope working channel of 5mm or larger diameter. The instrument is to be used only with the ESG-400 electrosurgical generator. The generator and device make up a medical electrical system. The instrument is to be used only with the Gyrus ESG-400 Generator and associated 5 way connector cable. The device is intended for use in a non-irrigated (dry) environment.

    AI/ML Overview

    This document describes the PK Spatula, an electrosurgical device, and its substantial equivalence to a predicate device. Detailed acceptance criteria and extensive study information (like sample sizes for test and training sets, expert qualifications, and specific ground truth methods) as typically found in an AI/software device submission are not provided in this type of 510(k) submission for a physical medical device. This submission focuses on comparing the new device to an existing one to demonstrate similar safety and effectiveness.

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

    1. Table of Acceptance Criteria and Reported Device Performance

    For this type of device, "acceptance criteria" and "device performance" are typically defined by engineering specifications and functional testing, rather than metrics like sensitivity, specificity, or AUC as seen in AI/software. The document states the new device is "substantially equivalent" to the predicate.

    Acceptance Criteria (Implied)Reported Device Performance
    Equivalence in cutting and coagulation performance to predicate."Cutting and Coagulation equivalency to predicate" met.
    Dimensional compliance."Dimensional Measurements" met.
    Withstand expected forces."Expected forces on devices" met.
    Proper design feature functionality (rotation, button activation)."Design feature testing (rotation and button activation)" met.
    Sterility and specified shelf life."Sterilization" and "Shelf Life" testing results are satisfactory.
    Biocompatibility."Biocompatibility testing has been carried out with passing results."
    Compliance with relevant voluntary standards.Device "complies with the following standards" (listed).

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

    This information is not explicitly provided in the document. The "performance tests" mentioned (dimensional, cutting/coagulation equivalency, forces, design features, shelf life, sterilization, biocompatibility) are laboratory-based engineering and bench tests, not clinical studies with "test sets" in the context of data analysis.

    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. "Ground truth" in the context of expert consensus is typically for diagnostic/interpretive devices (e.g., radiologists reviewing images). For an electrosurgical tool, "ground truth" refers to established engineering principles and objective measurements of its physical and functional properties.

    4. Adjudication Method for the Test Set

    This information is not applicable and not provided. Adjudication methods (like 2+1, 3+1) are used for resolving discrepancies in expert interpretations, which is not relevant to the physical and functional testing of an electrosurgical device.

    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 and not provided. An MRMC study is relevant for AI-assisted diagnostic or interpretive devices. The PK Spatula is a surgical tool, not an AI-based diagnostic system.

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

    This information is not applicable and not provided. Standalone algorithm performance is a concept for AI/software devices; the PK Spatula is a physical electrosurgical instrument.

    7. The Type of Ground Truth Used

    For this device, the "ground truth" for the performance testing is based on:

    • Engineering specifications and objective measurements: For dimensional measurements, expected forces, and design feature testing.
    • Established laboratory-based testing protocols: For cutting and coagulation equivalency (likely measured on tissue surrogates or ex vivo tissue), sterilization effectiveness, shelf life stability, and biocompatibility.
    • Compliance with recognized standards: Such as ISO and IEC standards for medical devices.

    8. The Sample Size for the Training Set

    This information is not applicable and not provided. "Training set" is a term used for machine learning. This device's development involves engineering design and validation, not model training.

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

    This information is not applicable and not provided for the same reasons as #8.


    Summary of the K142289 Submission:

    The provided document is a 510(k) premarket notification for a traditional medical device (PK Spatula, an electrosurgical instrument). The core of this submission is to demonstrate substantial equivalence to an already legally marketed predicate device (Gyrus PlasmaCision Laparoscopic Spatula K041633).

    The "study" that proves the device meets (implied) acceptance criteria consists of:

    • Bench Testing: A series of laboratory tests confirm the device's physical dimensions, mechanical strength, functionality (rotation, button activation), and performance characteristics (cutting and coagulation equivalency to the predicate).
    • Biocompatibility Testing: To ensure patient safety with the materials used.
    • Sterilization and Shelf Life Validation: To confirm the device remains sterile and functional over its stated shelf life.
    • Compliance with Voluntary Standards: Adherence to recognized medical device standards (ISO, IEC).

    The document asserts that these tests, along with a detailed comparison of intended use, design, and technological characteristics, ensure the PK Spatula is "substantially equivalent" to the predicate and "raises no new concerns or safety or effectiveness."

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