MICROSCAN SYNERGIES PLUS GRAM-POSITIVE MIC/COMBO PANELS WITH CLINDAMYCIN by DADE BEHRING, INC.

The MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panel is used to determine quantitative and/or qualitative antimicrobial agent susceptibility of colonies grown on solid media of rapidly growing aerobic and facultative anaerobic gram-positive enterococci and staphylococci. After inoculation, panels are incubated for 4.5 - 18 hours at 35°C +/- 1°C, in a WalkAway® SI, or equivalent, and read by the MicroScan® Instrumentation. Additionally, the panels may be incubated in a non-CO2 incubator and the Antimicrobial Susceptibility Testing (AST) portions can be read visually, according to the Package Insert.

This particular submission is for the addition of the antimicrobial clindamycin, at concentrations of 0.03 to 8 ug/ml Long Dilution Sequence and 0.12 - 2 ug/ml 5-Dilution Breakpoint Sequence, for Staphylococcus spp., to the test panel.

The Gram-positive organisms which may be used for clindamycin susceptibility testing in this panel are:

Staphylococcus aureus (penicillinase and non-penicillinase producing strains) ●
. Staphylococcus epidermidis (penicllinase and non-penicillinase producing strains)

Device Description

MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panels, utilizing both the MicroScan® Rapid Fluorogenic Identification and Dried Overnight Antimicrobial Susceptibility Testing (AST) technologies, are designed for use in determining quantitative and/or qualitative antimicrobial agent susceptibility of colonies grown on solid media of rapidly growing aerobic and facultative anaerobic Gram-positive enterococci and staphylococci.

The antimicrobial susceptibility tests are miniaturizations of the broth dilution susceptibility test that have been diluted in water and dehydrated. Various antimicrobial agents are diluted in water. buffer, or minute concentrations of broth, to concentrations bridging the range of clinical interest. Panels are rehydrated with Synergies plus" Pos Broth, after inoculation with a standardized suspension of the organism. After incubation in the WalkAway® SI, or equivalent, for 4.5 - 18 hours, the minimum inhibitory concentration (MIC) for the test organism is read by determining the lowest antimicrobial concentration showing inhibition of growth.

AI/ML Overview

Here's an analysis of the provided text regarding the acceptance criteria and study for the MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panels with clindamycin:

Acceptance Criteria and Reported Device Performance

Acceptance Criteria	Reported Device Performance
Overall Essential Agreement with Reference Panel and Expected Results	98.0% (for the Long Dilution Sequence when compared with the frozen Reference panel and Expected Results)
Reproducibility for clindamycin	Acceptable
Quality Control testing for clindamycin	Acceptable

Study Details

Sample size used for the test set and the data provenance: Not explicitly stated regarding the exact number of efficacy isolates and challenge strains. It mentions "fresh and stock Efficacy isolates and stock Challenge strains". The country of origin of the data is not specified. The study appears to be prospective as it's an external validation conducted to confirm acceptability.
Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not explicitly stated. The "Expected Results" for challenge strains likely imply an expert consensus or established laboratory standards, but the number and qualifications of experts are not provided.
Adjudication method for the test set: Not explicitly stated for establishing "Expected Results" for challenge strains or reconciling discrepancies. However, the comparison is against a "frozen Reference Panel" and "Expected Results," suggesting a predefined ground truth or reference standard.
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. This study is for an antimicrobial susceptibility testing (AST) system, not an AI-assisted diagnostic imaging device. It focuses on the accuracy and reproducibility of the device itself rather than human reader performance with or without AI.
If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Yes, in effect. The device (MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panel) operates as a standalone system, determining MIC values. While it requires human inoculation, the reading and interpretation of the MIC are performed by the WalkAway® SI instrument (or equivalent), or can be read visually for AST portions. The "Essential Agreement" evaluation directly assesses the device's performance against the reference, without human interpretation variability being the primary focus of the performance metric.
The type of ground truth used:
- Frozen Reference Panel: This serves as a primary ground truth for the "Long Dilution Sequence" comparison, likely representing a gold standard for MIC determination.
- Expected Results: For the Challenge strains, "Expected Results" were determined prior to evaluation, which usually implies that the MIC values for these strains were previously established through rigorous testing and expert consensus using a reference method.
The sample size for the training set: Not applicable and not mentioned. This is a traditional in vitro diagnostic device, not a machine learning or AI-based system that typically utilizes training sets in the same manner. The "frozen Reference Panel" and "Expected Results" are used for validation, not as a training set for an algorithm.
How the ground truth for the training set was established: Not applicable, as there is no mention of a training set in the context of an algorithmic or AI model.

Summary

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K070860

MAY 1 1 2007

510(k) Summary

510(k) Submission Information: Device Manufacturer: Dade Behring Inc. Contact name: Robert Eusebio, Regulatory Affairs Manager Fax: 916-374-3144 March 13, 2007 Date prepared: Product Name: Microdilution Minimum Inhibitory Concentration (MIC) Panels Trade Name: MicroScan® Synergies plus " Gram-Positive MIC/Combo Panels Intended Use: To determine antimicrobial agent susceptibility 510(k) Notification: New antimicrobial - clindamycin MicroScan® Synergies plus™ Gram-Negative MIC/Combo Panels and Predicate device: MicroScan® Dried Gram-Positive Panels

510(k) Summary:

The proposed MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panel demonstrated substantially equivalent performance when compared with a frozen Reference Panel, as defined in the FDA document "Class II Special Controls Guidance Document: Antimicrobial Susceptibility Test (AST) Systems; Guidance for Industry and FDA", dated February 5, 2003. The Premarket Notification (510[k]) presents data in support of the MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panel with clindamycin.

The external validation was conducted with fresh and stock Efficacy isolates and stock Challenge strains. The external validations were designed to confirm the acceptability of the proposed Synergies plus" Gram-Positive Panel by comparing its performance with a frozen Reference panel. Challenge strains were compared to Expected Results determined prior to the evaluation. The Synergies plus™ Gram-Positive Panel demonstrated acceptable performance with an overall Essential Agreement of 98.0%, for the Long Dilution Sequence when compared with the frozen Reference panel and Expected Results.

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Instrument reproducibility testing demonstrated acceptable reproducibility and precision for clindamycin with Turbidity inoculum preparation method and the WalkAway® SI System or equivalent.

Quality Control testing demonstrated acceptable results for the MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panel with clindamycin.

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Food and Drug Administration 2098 Gaither Road Rockville MD 20850

Mr. Robert Eusebio Regulatory Affairs Manager Dade Behring, Inc. 1584 Enterprise Boulevard West Sacramento, CA 95691-9972

MAY 1 1 2007

Re: K070860

Trade/Device Name: MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panels clindamycin (0.03- 8 µg/ml Long Dilution Sequence and 0.12 – 2 ug/ml 5 - Dilution Breakpoint Sequence) Regulation Number: 21 CFR 866.1645 Regulation Name: Fully automated short-term incubation cycle antimicrobial susceptibility system. Regulatory Class: Class II Product Code: LON, LRG, JWY, LTT Dated: March 27, 2007 Received: March 28, 2007

Dear Mr. Eusebio:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA), You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in Title 21, Code of Federal Regulations (CFR), Parts 800 to 895. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801 and 809); and good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820).

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This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.

If you desire specific information about the application of labeling requirements to your device, or questions on the promotion and advertising of your device, please contact the Office of In Vitro Diagnostic Device Evaluation and Safety at (240)276-0450. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html.

Sincerely yours,

Sally, anton

Sally A. Hojvat, M.Sc., Ph.D. Director Division of Microbiology Devices Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health

Enclosure

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Indications for Use

1070860 510(k) Number (if known):

Device Name: MicroScan® Synergies plus™ Gram-Positive MIC/Combo Panels with clindamycin (0.03 - 8 ug/ml Long Dilution Sequence and 0.12 - 2 ug/ml 5-Dilution Breakpoint Sequence)

Indications For Use:

The Gram-positive organisms which may be used for clindamycin susceptibility testing in this panel are:

Staphylococcus aureus (penicillinase and non-penicillinase producing strains) ●
. Staphylococcus epidermidis (penicllinase and non-penicillinase producing strains)

Prescription Use X (Part 21 CFR 801 Subpart D) AND/OR

Over-The-Counter Use (21 CFR 807 Subpart C)

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of In Vitro Diagnostic Devices (OIVD)

fredditu. Poole

Division Sign-Off

Office of In Vitro Diagnostic Device Evaluation and Safety

Cd 510k.doc 3/27/2007

510(k) KD 70866

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Regulation Number and Section

§ 866.1645 Fully automated short-term incubation cycle antimicrobial susceptibility system.

(a)
Identification. A fully automated short-term incubation cycle antimicrobial susceptibility system is a device that incorporates concentrations of antimicrobial agents into a system for the purpose of determining in vitro susceptibility of bacterial pathogens isolated from clinical specimens. Test results obtained from short-term (less than 16 hours) incubation are used to determine the antimicrobial agent of choice to treat bacterial diseases.(b)
Classification. Class II (special controls). The special control for this device is FDA's guidance document entitled “Class II Special Controls Guidance Document: Antimicrobial Susceptibility Test (AST) Systems; Guidance for Industry and FDA.”