(39 days)
VITEK® 2 Gram Negative Piperacillin is designed for antimicrobial susceptibility testing of gramnegative organisms and is intended for use with the VITEK® 2 and VITEK® 2 Compact Systems as a laboratory aid in the determination of in vitro susceptibility to antimicrobial agents. VITEK 2 Gram Negative Piperacillin is a quantitative test. Piperacillin has been shown to be active against most strains of the organisms listed below according to the FDA label for the antirocrobial.
Active in vitro and in clinical infections
Acinetobacter species Enterobacter species Escherichia coli Klebsiella species
Morganella morganii Providencia rettgeri Proteus mirabilis Proteus vulgaris
Pseudomonas aeruginosa Serratia species
Active in vitro but their clinical significance is uknown: Burkholderia cepacia Citrobacter koseri (formerly C. diversus)
Citrobacter freundii Pseudomonas fluorescens
The VITEK® 2 Antimicrobial Susceptibility Test (AST) is intended to be used with the VITEK® 2 and VITEK® 2 Compact Systems for the automated quantitative or qualitative susceptibility testing of isolated colonies for the most clinically significant aerobic gram-negative bacilii, Staphylococcus spp., Enterococcus spp., Streptococcus agalactiae, and S. pneumoniae.
The VITEK 2 AST Cards are essentially miniaturized versions of the doubling dilution technique for determining the minimum inhibitory concentration (MC) microdilution methodology.
The bacterial isolate to be tested is diluted to a standardized concentration in 0.45% saline before being used to rehydrate the antimicrobial medium within the card. The VITEK 2 System automatically fills, seals and places the card into the incubator/reader. The VITEK 2 Compact has a manual filling and sealing operation. The VITEK 2 monitors the growth of each well in the card over a defined period of time (up to 18 hours). At the completion of the incubation cycle, a report is generated that contains the MIC value along with the interpretive category result for each antibiotic contained on the card.
Here's a breakdown of the acceptance criteria and study details for the VITEK® 2 Gram Negative Piperacillin device, based on the provided text:
Acceptance Criteria and Reported Device Performance
| Metric | Acceptance Criteria (Implicit) | Reported Device Performance |
|---|---|---|
| Essential Agreement | Acceptable performance (as defined by FDA Class II Special Controls Guidance Document: Antimicrobial Susceptibility Test (AST) Systems, Feb. 5, 2003) | 94.6% |
| Category Agreement | Acceptable performance (as defined by FDA Class II Special Controls Guidance Document: Antimicrobial Susceptibility Test (AST) Systems, Feb. 5, 2003) | 92.4% |
| Reproducibility | Acceptable results | Acceptable |
| Quality Control | Acceptable results | Acceptable |
Study Details
-
Sample Size Used for the Test Set and Data Provenance:
- Sample Size: Not explicitly stated as a number of isolates. The document mentions "fresh and stock clinical isolates and stock challenge strains."
- Data Provenance: Not explicitly stated, but it was an "external evaluation," implying data was collected outside of bioMérieux's internal development environment. The country of origin is not specified. It included both "fresh and stock clinical isolates," indicating a mix of prospective and retrospective (archived) clinical data.
-
Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications:
- Not specified. The ground truth method (CLSI broth microdilution) is a standardized laboratory method rather than expert consensus on individual cases.
-
Adjudication Method for the Test Set:
- Not applicable. The ground truth was established by the CLSI broth microdilution reference method, which is an objective measurement, not requiring human adjudication of differing interpretations.
-
If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done:
- No, an MRMC study was not done. This device is an automated in vitro diagnostic (IVD) system for antimicrobial susceptibility testing, not a device intended for direct human interpretation or improvement of human reader performance. The study compared the device's performance to a reference laboratory method.
-
If a Standalone (Algorithm Only Without Human-in-the-Loop Performance) Was Done:
- Yes, this was a standalone performance study. The VITEK® 2 system is an automated device, and its performance was evaluated against the CLSI reference method to determine its accuracy without human intervention other than sample preparation and loading.
-
The Type of Ground Truth Used:
- Expert Consensus: No
- Pathology: No
- Outcomes Data: No
- Other: CLSI broth microdilution reference method. This is a universally accepted standardized laboratory procedure for determining minimum inhibitory concentrations (MICs) of antimicrobial agents.
-
The Sample Size for the Training Set:
- Not applicable/Not mentioned. The document describes a validation study for a device. For a traditional in vitro diagnostic, the "training set" concept (as in machine learning) is generally not applied in the same way. The device's underlying methodology is based on established microbiological principles, and its performance is validated using a test set against a gold standard.
-
How the Ground Truth for the Training Set Was Established:
- Not applicable/Not mentioned (see point 7).
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510(k) SUMMARY
VITEK® 2 Gram Negative Piperacillin
510(k) Submission Information:
| Submitter's Name: | bioMérieux, Inc. |
|---|---|
| Address: | 595 Anglum RoadHazelwood, MO 63042 |
| Contact Person: | Nancy WeaverAssociate Director, Regulatory Affairs |
| Phone Number: | 314-731-8695 |
| Fax Number: | 314-731-8689 |
| Date of Preparation: | October 30, 2007 |
| B. Device Name: | |
| Formal/Trade Name: | VITEK® 2 Gram Negative Piperacillin (≤ 4 - ≥ 128 µg/ml) |
| Classification Name: | Fully Automated Short-Term Incubation Cycle AntimicrobialSusceptibility Device, 21 CFR 866.1645 |
| Common Name: | VITEK 2 AST-GN Piperacillin |
|---|---|
| -------------- | ----------------------------- |
- C. Predicate Device: VITEK 2 Gram Negative Levofloxacin (K072038).
D. 510(k) Summary:
VITEK® 2 Gram Negative Piperacillin is designed for antimicrobial susceptibility testing of Acinetobacter sp., Enterobacter sp., Escherichia coli, Klebsiella sp., Morganella morganii, Proteus mirabilis, Proteus vulgaris, Providencia rettgeri, Pseudomonas aeruginosa, Serratia sp., Burkholderia cepacia, Citrobacter diversus, Citrobacter freundii, and Pseudomonas fluorescens. It is intended for use with the VITEK® 2 and VITEK® 2 Compact Systems as a laboratory aid in the determination of in vitro susceptibility to antimicrobial agents. The antimicrobial presented in VITEK 2 AST Cards is in concentrations equivalent by efficacy to standard method concentrations in mcg/ml. The VITEK 2 AST Cards are essentially miniaturized versions of the doubling dilution technique for determining the minimum inhibitory concentration (MC) microdilution methodology.
The bacterial isolate to be tested is diluted to a standardized concentration in 0.45% saline before being used to rehydrate the antimicrobial medium within the card. The VITEK 2 System automatically fills, seals and places the card into the incubator/reader. The VITEK 2 Compact has a manual filling and sealing operation. The VITEK 2 monitors the growth of each well in the card over a defined period of time (up to 18 hours). At the completion of the incubation cycle, a report is generated that contains the MIC value along with the interpretive category result for each antibiotic contained on the card.
VITEK 2 Gram Negative Piperacillin demonstrated substantially equivalent performance when compared with the CLSI broth microdilution reference method, as defined in the FDA Class II
bioMérieux, Inc.
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Special Controls Guidance Document: Antimicrobial Susceptibility Test (AST) Systems; Guidance for Industry and FDA, Issued Feb. 5, 2003.*
The Premarket Notification (510[k]) presents data in support of VITEK 2 Gram Negative Piperacillin. An external evaluation was conducted with fresh and stock clinical isolates and stock challenge strains. The external evaluations were designed to confirm the acceptability of VITEK 2 Gram Negative Piperacillin by comparing its performance with the CLSI broth microdilution reference method. The data is representative of performance on both the VITEK 2 and VITEK 2 Compact instrument platforms, as evidenced in the AST equivalency study presented in the VITEK 2 Compact 510(k), K050002. VITEK 2 Gram Negative Piperacillin demonstrated acceptable performance of 94.6% Essential Agreement and 92.4% Category Agreement. Reproducibility and Quality Control demonstrated acceptable results.
*Note: This device clinical trial was initiated prior to the March 5, 2007 issuance of the revised guidance.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized depiction of an eagle with three lines representing its wings or feathers. The eagle is positioned within a circular border that contains the text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" in a sans-serif font. The text is arranged around the upper half of the circle, following its curvature.
Re:
Public Health Service
ood and Drug Administration 2098 Gaither Road Rockville MD 20850
DEC 1 0 2007
.
Ms. Nancy Weaver Associate Director, Regulatory Affairs bioMérieux, Inc. 595 Anglum Road Hazelwood, MO 63042
K073083 Trade/Device Name: VITEK® 2 Gram Negative Piperacillin (≤ 4 - ≥ 128 µg/ml) Regulation Number: 21 CFR § 866.1645 Regulation Name: Fully Automated Short-Term Incubation Cycle Antimicrobial Susceptibility Device Regulatory Class: II Product Code: LON Dated: October 30, 2006 Received: November 1, 2006
Dear Ms. Weaver:
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 (OS) regulation (21 CFR Part 820).
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Page 2 -
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 advice for your device on our labeling regulation (21 CFR Part 801), 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). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometric's (OSB's) Division of Postmarket Surveillance at 240-276-3474. For questions regarding the reporting of device adverse events (Medical Device Reporting (MDR)), please contact the Division of Surveillance Systems at 240-276-3464. You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Sally attyms
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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Indication for Use
1073083 510(k) Number (if known):
Device Name: VITEK® 2 Gram Negative Piperacillin (≤ 4 - ≥ 128 µg/ml)
Indication For Use:
VITEK® 2 Gram Negative Piperacillin is designed for antimicrobial susceptibility testing of gramnegative organisms and is intended for use with the VITEK® 2 and VITEK® 2 Compact Systems as a laboratory aid in the determination of in vitro susceptibility to antimicrobial agents. VITEK 2 Gram Negative Piperacillin is a quantitative test. Piperacillin has been shown to be active against most strains of the organisms listed below according to the FDA label for the antirocrobial.
Active in vitro and in clinical infections
Acinetobacter species Enterobacter species Escherichia coli Klebsiella species
Morganella morganii Providencia rettgeri Proteus mirabilis Proteus vulgaris
Pseudomonas aeruginosa Serratia species
Active in vitro but their clinical significance is uknown: Burkholderia cepacia Citrobacter koseri (formerly C. diversus)
Citrobacter freundii Pseudomonas fluorescens
The VITEK® 2 Antimicrobial Susceptibility Test (AST) is intended to be used with the VITEK® 2 and VITEK® 2 Compact Systems for the automated quantitative or qualitative susceptibility testing of isolated colonies for the most clinically significant aerobic gram-negative bacilii, Staphylococcus spp., Enterococcus spp., Streptococcus agalactiae, and S. pneumoniae.
Prescription Use X (21 CFR Part 801 Subpart D)
Over the Counter Use (21 CFR Part 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE; CONTINUE ON ANOTHER PAGE IF NEEDED)
And/Or
Concurrence of CDRH, Office of In Vitro Diagnostic Device Evaluation and Safety (OIVD)
Luddeke. Poole
Division Sign-Off Office of In Vitro Diagnostic Device Evaluation and Safety
510(k) K0 73083
Page 1 of 1
§ 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.”