FOSFOMYCIN, 200 MG, SENSI-DISC

K972098 · Becton Dickinson Microbiology Systems · JTN · Jul 28, 1997 · Microbiology

Device Facts

• Record ID: K972098
• Device Name: FOSFOMYCIN, 200 MG, SENSI-DISC
• Applicant: Becton Dickinson Microbiology Systems
• Product Code: JTN · Microbiology
• Decision Date: Jul 28, 1997
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 866.1620
• Device Class: Class 2

Indications for Use

Antimicrobial Susceptibility Test Discs are used for semi-quantitative in vitro susceptibility testing by standardized agar diffusion test procedures. Fosfomycin Sensi-Discs® are intended for use in determining the susceptibility to Fosfomycin of a wide range of bacteria, including Enterococcus faecalis, Enterococcus faeclum, Escherichia coli, Citrobacter diversus, Citerobacter freundii, Entercbacter aerogenes, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris, and Serratia marcesceus. Zone sizes used tor interpretation of tests, including control organism limits, were determined by the antimicrobic manufacturer, Forest Pharmaceuticals, Inc., and received FDA approval under NDA No. 50-717.

Device Story

Fosfomycin Sensi-Discs are paper discs impregnated with 200 mcg of the antimicrobial agent Fosfomycin. Used in clinical microbiology laboratories for semi-quantitative in vitro susceptibility testing via standardized agar diffusion methods. The discs are placed on agar plates inoculated with bacterial cultures. As the antibiotic diffuses into the agar, it inhibits bacterial growth, creating a zone of inhibition. Laboratory technicians measure the diameter of these zones to determine the susceptibility of the organism to the drug. Results assist healthcare providers in selecting appropriate antibiotic therapy for patients with bacterial infections. The device provides a standardized, reliable method for assessing antimicrobial efficacy against specific pathogens.

Clinical Evidence

No clinical data. Bench testing only; performance is based on standardized agar diffusion test procedures and established zone size interpretation criteria.

Technological Characteristics

Antimicrobial susceptibility test discs; paper-based; impregnated with 200 mcg Fosfomycin. Operates via standardized agar diffusion principle. Standalone diagnostic accessory. No software or electronic components.

Indications for Use

Indicated for in vitro agar diffusion susceptibility testing to determine bacterial susceptibility to Fosfomycin. Active against Enterococcus faecalis and Escherichia coli (clinical infections); active in vitro only against Enterococcus faeclum, Citrobacter diversus, Citrobacter freundii, Enterobacter aerogenes, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris, and Serratia marcesceus.

Regulatory Classification

Identification

An antimicrobial susceptibility test disc is a device that consists of antimicrobic-impregnated paper discs used to measure by a disc-agar diffusion technique or a disc-broth elution technique the in vitro susceptibility of most clinically important bacterial pathogens to antimicrobial agents. In the disc-agar diffusion technique, bacterial susceptibility is ascertained by directly measuring the magnitude of a zone of bacterial inhibition around the disc on an agar surface. The disc-broth elution technique is associated with an automated rapid susceptibility test system and employs a fluid medium in which susceptibility is ascertained by photometrically measuring changes in bacterial growth resulting when antimicrobial material is eluted from the disc into the fluid medium. Test results are used to determine the antimicrobial agent of choice in the treatment of bacterial diseases.

Predicate Devices

• Ciprofloxacin, 5 mcg, Sensi-Disc®

Submission Summary (Full Text)

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Food and Drug Administration 2098 Gaither Road Rockville MD 20850

JUL 28 1997

Virginia C. Weinknecht Regulatory Affairs Specialist Becton Dickinson Microbiology Systems P.O. Box 243 Cockeysville, Maryland 21030-0243

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Re: K972098 Trade Name: Fosfomycin, 200 mg, Sensi-Disc® Regulatory Class: II Product Code: JTN Dated: June 2, 1997

Received: June 4, 1997

Dear Ms. Weinknecht:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent to 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). 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Good Manufacturing Practice for Modical Devices: General (GMP) regulation (21 CFR Part 820) and that, through periodic GMP inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

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Under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), this device may require a CLIA complexity categorization. To determine if it does, you should contact the Centers for Disease Control and Prevention (CDC) at [phone].

This letter will allow you to begin marketing your device as described in your 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll free number [phone] or at [phone] or at its internet address "http://www.fda.gov/cdrh/dsmamain.html"

Sincerely yours,

Steven Sutman

Steven I. Gutman, M.D., M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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K 973098

Date 6/2/97

## SUMMARY OF SAFETY AND EFFECTIVENESS

SUBMITTED BY:

Virginia C. Weinknecht Regulatory Affairs Specialist Becton Dickinson Microbiology Systems P.O. Box 243 Cockeysville, MD 21030-0243

NAME OF DEVICE:

| Trade Name: | Fosfomycin, 200 mcg, Sensi-Discs<br>Catalog Numbers 4331709, 4331710 |
|--------------------------|----------------------------------------------------------------------|
| Common Name/Description: | Antimicrobial Susceptibility Test Discs |
| Classification Name: | Antimicrobial Susceptibility Test Discs |
| PREDICATE DEVICE: | Other BBL® Sensi-Discs® such as<br>Ciprofloxacin, 5 mcg, Sensi-Disc® |

DEVICE DESCRIPTION:

PRE

INTENDED USE:

Antimicrobial Susceptibility Test Discs are used for semi-quantitative in vitro susceptibility testing by standardized agar diffusion test procedures. Fosfomycin Sensi-Discs® are intended for use in determining the susceptibility to Fosfomycin of a wide range of bacteria, including Enterococcus faecalis, Enterococcus faeclum, Escherichia coli, Citrobacter diversus, Citerobacter freundii, Entercbacter aerogenes, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris, and Serratia marcesceus. Zone sizes used tor interpretation of tests, including control organism limits, were determined by the antimicrobic manufacturer, Forest Pharmaceuticals, Inc., and received FDA approval under NDA No. 50-717.

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Device Name: Fosfomycin, 200 mg, Sensi-Disc®

Indications For Use:

Use of BBL Fosfomycin Sensi-Discs®.for in .vitro .agar diffusion.susceptibility. testing is indicated when there is a need to determine the susceptibility of bacteria to Fosfomycin. Fosfomycin has been shown to be active against most strains of microorganisms listed below, as described in the Forest Pharmaceuticals, Inc., package insert for this antimicrobic.

## Active In Vitro and In Clinical Infections Against: Aerobic Gram-Positive Microorganisms Enterococcus faecalis Aerobic Gram-Negative Microorganisms Escherichia coli Active In Vitro Only Against: Aerobic Gram-Positive Microorganisms Enterococcus faeclum Aerobic Gram-Negative Microorganisms Citrobacter diversus Citerobacter freundii Enterobacter aerogenes Klebsiella oxytoca Klebsiella pneumoniae Proteus mirabilis Proteus vulgaris Serratia marcesceus

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

| | Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|---------------|--------------------------------------------------------|--|
| | (Division Sign-Off) | |
| | Division of Clinical Laboratory Devices | |
| 510(k) Number | K972098 | |

| Prescription Use | | OR | Over-The-Counter Use |
|--------------------|--|----|------------------------|
| Per 21 CFR 801.109 | | | Optional Format 1-2-96 |