K Number
K954923
Device Name
BACTEC FUNGAL MEDIUM
Date Cleared
1996-11-21

(392 days)

Product Code
Regulation Number
866.2560
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
Qualitative culture and recovery of yeasts and fungi from blood
Device Description
BACTEC Fungal Medium is a growth medium providing an aerobic environment for the detection of yeast and fungi. It has been designed for blood volumes of four to 10 mL, and is used specifically with BACTEC non-radiometric (NR) series instruments in the monitoring of clinical blood specimens for the presence of yeasts and fungi. BACTEC Fungal medium has a higher weight/volume concentration of dextrose and sucrose then the predicate device to enhance the recovery and CO2 production of yeast. Saponin was added to the BACTEC Fungal Medium as a lysing agent, and ferric ammonium citrate was added as a source of iron to stimulate recovery of fungi other than yeast. Resin was removed from this medium. Principles for detection of CO2 produced by microorganisms metabolizing blood culture medium nutrients are identical to the predicate device.
More Information

BACTEC® PLUS 26 Culture Vials

Not Found

No
The device description and performance studies focus solely on the chemical composition of the growth medium and its ability to recover fungi, with no mention of AI or ML for analysis or interpretation.

No.
The device is a growth medium used for culturing and recovering yeasts and fungi from blood samples for diagnostic purposes, not for treating a condition.

Yes.

The device is intended for the qualitative culture and recovery of yeasts and fungi from blood, which is a diagnostic purpose to detect the presence of microorganisms.

No

The device description clearly states it is a "growth medium" and is used with "BACTEC non-radiometric (NR) series instruments," indicating it is a physical product (medium) and relies on hardware (instruments).

Yes, this device is an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use is "Qualitative culture and recovery of yeasts and fungi from blood." This clearly indicates the device is used to examine specimens taken from the human body (blood) to provide information for diagnostic purposes (detecting the presence of yeasts and fungi).
  • Device Description: The description details a "growth medium" used with instruments for "monitoring of clinical blood specimens for the presence of yeasts and fungi." This further supports its use in a laboratory setting for diagnostic testing.
  • Performance Studies: The inclusion of clinical performance studies comparing the device to other methods for detecting fungi in blood reinforces its role in diagnostic evaluation.

These characteristics align directly with the definition of an In Vitro Diagnostic device.

N/A

Intended Use / Indications for Use

Qualitative culture and recovery of yeasts and fungi from blood

Product codes

Not Found

Device Description

BACTEC Fungal Medium is a growth medium providing an aerobic environment for the detection of yeast and fungi. It has been designed for blood volumes of four to 10 mL, and is used specifically with BACTEC non-radiometric (NR) series instruments in the monitoring of clinical blood specimens for the presence of yeasts and fungi. BACTEC Fungal medium has a higher weight/volume concentration of dextrose and sucrose then the predicate device to enhance the recovery and CO2 production of yeast. Saponin was added to the BACTEC Fungal Medium as a lysing agent, and ferric ammonium citrate was added as a source of iron to stimulate recovery of fungi other than yeast. Resin was removed from this medium. Principles for detection of CO2 produced by microorganisms metabolizing blood culture medium nutrients are identical to the predicate device.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

Not Found

Indicated Patient Age Range

Not Found

Intended User / Care Setting

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Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

A multi-center clinical study comparing BACTEC® Fungal Medium, BACTEC® PLUS 26 blood culture medium, and the ISOLATOR™ Microbial Tubes/ISOSTAT® Microbial System (IS System) was conducted at four university-affiliated hospitals. There were a total of 4886 adequately filled paired vials in the comparison of BACTEC® Fungal Medium to BACTEC® PLUS 26 blood culture medium, and 4907 adequately filled paired vials and tubes in the comparison of BACTEC® Fungal Medium to the IS System. Of the 229 clinically significant isolates recovered in the comparison of BACTEC® Fungal Medium to BACTEC® PLUS 26 blood culture medium, 161 were bacteria and 68 were fungi. Of the 68 fungi, 31 isolates (45.6%) were recovered in both media, 11 (16.2%) were recovered in BACTEC® PLUS 26 blood culture medium only, and 26 (38.2%) were recovered in BACTEC® Fungal Medium only. Recovery of all fungi combined and of Torulopsis glabrata was statistically significantly better (p

§ 866.2560 Microbial growth monitor.

(a)
Identification. A microbial growth monitor is a device intended for medical purposes that measures the concentration of bacteria suspended in a liquid medium by measuring changes in light scattering properties, optical density, electrical impedance, or by making direct bacterial counts. The device aids in the diagnosis of disease caused by pathogenic microorganisms.(b)
Classification. Class I. With the exception of automated blood culturing system devices that are used in testing for bacteria, fungi, and other microorganisms in blood and other normally sterile body fluids, this device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter.

0

K954923

510(k) SUMMARY

NOV 21 1996

| SUBMITTED BY: | BECTON DICKINSON DIAGNOSTIC INSTRUMENT SYSTEMS
7 LOVETON CIRCLE
SPARKS, MD 21152 |
|-------------------|----------------------------------------------------------------------------------------|
| CONTACT: | Dennis Mertz, Manager Regulatory Affairs |
| TELEPHONE: | (410) 316-4099 |
| FAX: | (410) 316-4499 |
| PREPARED: | October 25, 1995 |
| DEVICE NAME: | BACTEC® Fungal Medium |
| PREDICATE DEVICE: | BACTEC® PLUS 26 Culture Vials |
| INTENDED USE: | Qualitative culture and recovery of yeasts and fungi from blood |

DEVICE DESCRIPTION:

BACTEC Fungal Medium is a growth medium providing an aerobic environment for the detection of yeast and fungi. It has been designed for blood volumes of four to 10 mL, and is used specifically with BACTEC non-radiometric (NR) series instruments in the monitoring of clinical blood specimens for the presence of yeasts and fungi. BACTEC Fungal medium has a higher weight/volume concentration of dextrose and sucrose then the predicate device to enhance the recovery and CO2 production of yeast. Saponin was added to the BACTEC Fungal Medium as a lysing agent, and ferric ammonium citrate was added as a source of iron to stimulate recovery of fungi other than yeast. Resin was removed from this medium. Principles for detection of CO2 produced by microorganisms metabolizing blood culture medium nutrients are identical to the predicate device.

SUBSTANTIAL EQUIVALENCE:

Table 1 summarizes the similarities and differences between BACTEC® Fungal Medium and BACTEC® PLUS 26 Culture Vials.

1

to BACTEC® PLUS 26 Culture Vials
BACTEC® Fungal MediumBACTEC® PLUS 26
Intended useQualitative culture and recovery of yeasts and fungiQualitative culture and recovery of aerobic
microorganisms (mainly bacteria and
fungi)
Sample typeBloodBlood
Sample volume4 - 10 mL5 - 10 mL
Blood to broth ratio1 to 2.51 to 2.5
Growth mediumEnriched brain heart infusion broth with CO₂Enriched soybean-casein digest broth with CO₂
Lysing AgentSaponin (0.24% w/v)None
Reactive ingredient
concentrations
• Processed water25 mL25 mL
• Brain heart
infusion broth1.0% w/v2.75% w/v
• Soybean-casein
digest broth0.035% w/v0.25% w/v
• Yeast extract0.035% w/v0.06% w/v
• Dextrose0.1% w/v0.084% w/v
• Sucrose0.6% w/v
• m-Inositol0.05% w/v0.0005% w/v
• Hemin---0.00005% w/v
• Menadione------
• Ferric
ammonium
citrate0.0001% w/v0.001% w/v
• Pyridoxal HCl------
• Saponin0.24% w/v---
• Anti-foaming
agent0.01% w/v---
• SPS0.05% w/v0.05% w/v
• Chloramphenicol0.005% w/v---
• Tobramycin0.001% w/v---
• Nonionic
adsorbing resin---16.0% w/v
• Cationic
exchange resin---1.0% w/v
ResinsNoneYes (see above)
InstrumentBACTEC® NR instrumentsBACTEC® NR instruments
Growth detectionInfrared spectrophotometric
measurement of CO₂ produced by
microorganisms metabolizing
culture medium nutrientsInfrared spectrophotometric
measurement of CO₂ produced by
microorganisms metabolizing
culture medium nutrients
Incubation
temperature35°C ± 1.5°C35°C ± 1.5°C
AgitationOrbital agitation for the first 24
hours recommendedOrbital agitation for the first 24
hours recommended
Vial glassType III, soda limeType III, soda lime
ClosureRubberRubber

Table 1. Substantial Equivalence of BACTEC® Fungal Medium

  1. Substantial Equivalence or use of Active Viele C® PI US 26 Culture Vials D

2

CLINICAL PERFORMANCE:

A multi-center clinical study comparing BACTEC® Fungal Medium, BACTEC® PLUS 26 blood culture medium, and the ISOLATOR™ Microbial Tubes/ISOSTAT® Microbial System (IS System) was conducted at four university-affiliated hospitals. There were a total of 4886 adequately filled paired vials in the comparison of BACTEC® Fungal Medium to BACTEC® PLUS 26 blood culture medium, and 4907 adequately filled paired vials and tubes in the comparison of BACTEC® Fungal Medium to the IS System. Of the 229 clinically significant isolates recovered in the comparison of BACTEC® Fungal Medium to BACTEC® PLUS 26 blood culture medium, 161 were bacteria and 68 were fungi. Of the 68 fungi, 31 isolates (45.6%) were recovered in both media, 11 (16.2%) were recovered in BACTEC® PLUS 26 blood culture medium only, and 26 (38.2%) were recovered in BACTEC® Fungal Medium only. Recovery of all fungi combined and of Torulopsis glabrata was statistically significantly better (p