BD PHOENIX AUTOMATED MICROBIOLOGY SYSTEM -CIPROFLOXACIN GN

K052269 · Becton, Dickinson & CO · LON · Oct 3, 2005 · Microbiology

Device Facts

• Record ID: K052269
• Device Name: BD PHOENIX AUTOMATED MICROBIOLOGY SYSTEM -CIPROFLOXACIN GN
• Applicant: Becton, Dickinson & CO
• Product Code: LON · Microbiology
• Decision Date: Oct 3, 2005
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 866.1645
• Device Class: Class 2

Intended Use

The BD Phoenix™ GN Panel: The BD Phoenix™ Automated Microbiology System is intended for the in vitro rapid identification (ID) and quantitative determination of antimicrobial susceptibility by minimal inhibitory concentration (MIC) of gram-negative aerobic and facultative anaerobic bacteria belonging to the family Enterobacteriaceae and non-Enterobacteriaceae. BD Phoenix™ Automated Microbiology System: The BD Phoenix™ Automated Microbiology System is intended for in vitro quantitative determination of antimicrobial susceptibility by minimal inhibitory concentration of gram-negative aerobic and facultative anaerobic bacteria belonging to the family Enterobacteriaceae and non-Enterobacteriaceae and gram-positive bacteria belonging to the genera Staphylococcus and Enterococcus.

Device Story

System performs automated antimicrobial susceptibility testing (AST) and identification (ID) of bacterial isolates. Input: pure culture colonies suspended in broth, equated to 0.5 McFarland standard using nephelometer, then diluted into AST broth containing redox indicator. Process: inoculated polystyrene trays with 136 micro-wells incubated at 35°C; instrument continuously monitors color change (blue to pink/colorless) via optical scanning every 20 minutes to detect growth; growth indicates resistance, lack of growth indicates susceptibility. Output: MIC values and categorical interpretations (SIR). Used in clinical microbiology laboratories; operated by technicians. Software-driven 'EXPERT' system interprets results based on NCCLS/CLSI rules. Benefits: rapid, automated determination of antibiotic susceptibility to guide clinical treatment decisions.

Clinical Evidence

Performance evaluated against CLSI reference broth microdilution method using clinical, stock, and challenge isolates. Metrics included Essential Agreement (EA) and Category Agreement (CA). Intra-site reproducibility >90% and inter-site reproducibility >95% for Gram-negative isolates. Study followed FDA guidance 'Guidance on Review Criteria for Assessment of Antimicrobial Susceptibility Devices'.

Technological Characteristics

Automated growth-based system using redox indicator (colorimetric oxidation-reduction). Components: instrumentation, software, and molded polystyrene trays with 136 micro-wells. AST broth is cation-adjusted Mueller-Hinton with 0.01% Tween 80. Incubation at 35°C. Connectivity: barcode scanning of panels. Software: rule-based 'EXPERT' system derived from NCCLS/CLSI documentation.

Indications for Use

Indicated for in vitro rapid identification and quantitative antimicrobial susceptibility testing (MIC) of gram-negative aerobic and facultative anaerobic bacteria (Enterobacteriaceae and non-Enterobacteriaceae) and gram-positive bacteria (Staphylococcus and Enterococcus). Excludes S. maltophilia. Prescription use only.

Regulatory Classification

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.

Special Controls

*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.”

Predicate Devices

• VITEK® System (PMA No. N50510)
• BD Phoenix™ Automated Microbiology System with Gatifloxacin (K020321)
• BD Phoenix™ Automated Microbiology System with Ofloxacin (K020323)
• BD Phoenix™ Automated Microbiology System with Levofloxacin (K020322)

Submission Summary (Full Text)

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OCT 3 - 2005

CONFIDENTIAL AND

# 510(K) SUMMARY

| SUBMITTED BY: | Becton, Dickinson and Company<br>7 Loveton Circle<br>Sparks, MD 21152<br>Phone: [phone]<br>Fax: [phone] |
|------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| CONTACT NAME: | Monica Evelyn Giguere<br>Regulatory Affairs Specialist |
| DATE PREPARED: | August 17, 2005 |
| DEVICE TRADE NAME: | BD Phoenix™ Automated Microbiology System --<br>Ciprofloxacin 0.25-4 µg/ml |
| DEVICE COMMON NAME: | Antimicrobial susceptibility test system-short incubation |
| DEVICE CLASSIFICATION: | Fully Automated Short-Term Incubation Cycle Antimicrobial<br>Susceptibility Device, 21 CFR 866.1645 |
| PREDICATE DEVICES: | VITEK® System (PMA No. N50510) and BD Phoenix™<br>Automated Microbiology System with Gatifloxacin (K020321,<br>May 23, 2002), Ofloxacin (K020323, April 14, 2002), and<br>Levofloxacin (K020322, March 27, 2002). |
| INTENDED USE: | The BD Phoenix™ Automated Microbiology System is<br>intended for the rapid identification and in vitro antimicrobial<br>susceptibility testing of isolates from pure culture of most<br>aerobic and facultative anaerobic Gram-negative and Gram-<br>positive bacteria of human origin. |

#### DEVICE DESCRIPTION:

The BD Phoenix Automated Microbiology System (Phoenix System) is an automated system for the rapid identification (ID) and antimicrobial susceptibility testing (AST) of clinically relevant bacterial isolates. The system includes the following components:

- . BD Phoenix instrument and software.
- . BD Phoenix panels containing biochemicals for organism ID testing and antimicrobial agents for AST determinations.
- BD Phoenix ID Broth used for performing ID tests and preparing AST Broth inoculum. .
- . BD Phoenix AST Broth used for performing AST tests only.
- BD Phoenix AST Indicator solution added to the AST Broth to aid in bacterial growth . determination.

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The Phoenix panel is a sealed and self-inoculating molded polystyrene tray with 136 micro-wells containing dried reagents. Organisms for susceptibility testing must be a pure culture and preliminarily identified as a Gram-negative or Gram-positive isolate. For each isolate, an inoculation equivalent to a 0.5 McFarland standard is prepared in Phoenix ID Broth.

The Phoenix AST method is a broth based microdilution test. The Phoenix System utilizes a redox indicator for the detection of organism growth in the presence of an antimicrobial agent. Measurements of changes to the indicator as well as bacterial turbidity are used in the determination of bacterial growth. Each AST panel configuration contains several antimicrobial agents with a wide range of two-fold doubling dilution concentrations.

The instrument houses the panels where they are continuously incubated at a nominal temperature of 35°C. The instrument takes readings of the panels every 20 minutes. The readings are interpreted to give an identification of the isolate, minimum inhibitory concentration (MIC) values and category interpretations, S, I, or R (sensitive, intermediate, or resistant).

# DEVICE COMPARISON:

The BD Phoenix™ Automated Microbiology System demonstrated substantially equivalent performance when compared with the CLSI reference broth microdilution method. This premarket notification provides data supporting the use of the BD Phoenix™ Automated Microbiology System Gram-negative ID/AST or AST only Phoenix panels with this antimicrobial agent.

# SUMMARY OF SUBSTANTIAL EQUIVALENCE TESTING:

The BD Phoenix™ Automated Microbiology System has demonstrated substantially equivalent performance when compared to the CLSI reference broth microdilution method (AST panels prepared according to NCCLS M7). The system has been evaluated as defined in the FDA Draft guidance document, "Guidance on Review Criteria for Assessment of Antimicrobial Susceptibility Devices", March 8, 2000.

#### Site Reproducibility

Intra- and inter-site reproducibility of this antimicrobial agent in the BD Phoenix System was evaluated at three sites using a panel of Gram-negative isolates. Each site tested the isolates in triplicate on three different days using one lot of Gram-negative Phoenix panels containing this antimicrobial agent and associated reagents.

The results of the study demonstrate for the this antimicrobial agent there was an overall intra-site reproducibility of greater than 90% and an overall inter-site reproducibility greater than 95% for the Gram-negative isolates tested.

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# Clinical Studies

Clinical, stock and challenge isolates were tested across multiple geographically diverse sites across the United States to demonstrate the performance of the Phoenix antimicrobial susceptibility test with the Gram-negative Phoenix panel format containing this antimicrobial agent. Phoenix System results for Challenge set isolates were compared to the expected results. Phoenix System results for clinical isolates were compared to the results obtained from the CLSI reference broth microdilution method.

The performance of the Phoenix System was assessed by calculating Essential Agreement (EA) and Category Agreement (CA) as compared to the expected/reference results for all isolates tested. Essential Agreement (EA) occurs when the BD Phoenix™ Automated Microbiology System agrees exactly or within + one two-fold dilution to the reference result. Category Agreement (CA) occurs when the BD Phoenix™ Automated Microbiology System agrees with the reference method with respect to the FDA categorical interpretive criteria (susceptible, intermediate, and resistant).

Table 1 summarizes the performance for the isolates tested in this study.

#### Table 1: Performance of BD Phoenix System for Gram-negative Organisms by Drug

| [212.2018 11:22 PM 111 11 111 8111 111 8111 111 8111 111 111 111 111 111 111 111 111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111<br>Antimicrohia<br>. | oncentration | Continued and the contribution of the land<br>- | <br>T LE FREE T ON FREE LAND<br>0<br>11.7 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1<br>. | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>10/01<br>( |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Comments of the charges of the<br>r<br>ıprofloxacın | C AP<br>117<br>ﺎ ﻣﻦ ﺍﻟﻤﺴﺎﺣﺔ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ | 000<br>20.30<br>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | <br>9<br>90.6<br>--------------------------------------------------------------------------------------- | חסרי<br>ﻟﻤﺴﺎﺣﺔ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮ<br>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | 05 7<br>and a last |

# Conclusions Drawn from Substantial Equivalence Studies

The data collected from the substantial equivalence studies demonstrate that testing on the BD Phoenix™ Automated Microbiology System with this antimicrobial agent is substantially equivalent as outlined in the FDA draft guidance document, "Guidance on Review Criteria for Assessment of Antimicrobial Susceptibility Devices", March 8, 2000. Technological characteristics of this system are substantially equivalent to those used in the VITEK® system, which received approval by the FDA under PMA number N50510 and BD Phoenix™ Automated Microbiology System with Gatifloxacin (K020321, May 23, 2002), Ofloxacin (K020323, April 14, 2002), and Levofloxacin (K020322, March 27, 2002).

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DEPARTMENT OF HEALTH & HUMAN SERVICES

Image /page/3/Picture/1 description: The image shows the seal for the Department of Health & Human Services. The seal is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" around the perimeter. In the center of the seal is a stylized image of an eagle with its wings spread.

Public Health Service

OCT 3 - 2005

Food and Drug Administration 2098 Gaither Road Rockville MD 20850

Ms. Monica Giguere Regulatory Affairs Specialist Becton, Dickinson and Company BD Diagnostic Systems 7 Loveton Circle Sparks, MD 21152

Re: k052269

> Trade/Device Name: BD Phoenix™ Automated Microbiology System for use with Ciprofloxacin (0.25-4ug/ml) Gram-negative ID/AST or AST only Phoenix panels Regulation Number: 21 CFR 866.1645 Regulation Name: Fully automated short-term incubation cycle antimicrobial susceptibility system Regulatory Class: Class II Product Code: LON Dated: August 17, 2005 Received: August 19, 2005

Dear Ms. Giguere:

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

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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 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 [phone]. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). 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 [phone] or [phone] or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html

Sincerely yours,

Sales a For

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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Page 1 of 1

510(k) Number: KU52249

Device Name: BD Phoenix™ Automated Microbiology System for use with the antimicrobial agent ciprofloxacin (0.25-4 ug/ml) - Gram-negative ID/AST or AST only Phoenix panels.

Indications for Use:

The BD Phoenix™ Automated Microbiology System is intended for in vitro quantitative determination of antimicrobial susceptibility by minimal inhibitory concentration (MIC) of most Gram-negative aerobic and facultative anaerobic bacteria isolates from pure culture for Enterobacteriaceae and Non-Enterobacteriaceae and most Gram-positive bacteria isolates from pure culture belonging to the genera Staphylococcus and Enterococcus.

This premarket notification is for the removal of limitations for Enterobacter cloacae and Serratia species from the original premarket notification [K023895, 1/8/2003] for the antimicrobial agent ciprofloxacin at concentrations of 0.25-4 ug/ml to Gram-negative ID/AST or AST only Phoenix panels. The concentration range has been reduced by one dilution from the range of 0.125-4ug/ml in the original 510(k). Ciprofloxacin has been shown to be active in vitro against most strains of microorganisms listed below, as described in the FDA-approved package insert for this antimicrobial agent.

# Active In Vitro and in Clinical Infections Against:

#### Aerobic Gram-negative microorganisms

| Citrobacter koseri | Proteus mirabilis | Serratia marcescens |
|-----------------------|------------------------|----------------------|
| Citrobacter freundii | Proteus vulgaris | Shigella boydii |
| Enterobacter cloacae | Providencia rettgeri | Shigella dysenteriae |
| Escherichia coli | Providencia stuartii | Shigella flexneri |
| Klebsiella pneumoniae | Pseudomonas aeruginosa | Shigella sonnei |
| Morganella morganii | Salmonella typhi | |

### Active In Vitro Against:

#### Aerobic Gram-negative microorganisms

Acinetobacter Iwoffi Aeromonas hydrophila Edwardsiella tarda Enterobacter aerogenes Klebsiella oxytoca Salmonella enteritidis Yersinia enterocolitica

Prescription Use V (Per 21 CFR 801.109)

Over-the-Counter Use

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Concurrence of CDRH, Office of Device Evaluation (ODE)

BD Diagnostic Systems Becton, Dickinson and Company Office of In Vitro Diagnostic Device Evaluation and Salety 1105226

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