(189 days)
The Bruker Daltonics, Inc. MALDI Biotyper CA System is a mass spectrometer system using matrix-assisted laser desorption/ionization – time-of-flight (MALDI-TOF) for the identification of microorganisms cultured from human specimens.
The MALDI Biotyper CA System is a qualitative in vitro diagnostic device indicated for use in conjunction with other clinical and laboratory findings to aid in the diagnosis of bacterial and yeast infections.
The Bruker Daltonics, Inc. MALDI Biotyper CA System is a mass spectrometer system using matrix-assisted laser desorption/ionization – time-of-flight (MALDI-TOF) for the identification of microorganisms cultured from human specimens. The system measures the time (in the nanosecond range) between pulsed acceleration and the corresponding detector signal, the speed is converted into an exact molecular mass. The mass-to-charge ratio of an ion is proportional to the square of its drift time. Highly abundant microbial proteins (mainly ribosomal proteins) result in a mass spectrum with characteristic mass and intensity distribution. It is specific for many bacteria and is interpreted as a molecular fingerprint to identify the test organism.
Here's an analysis of the provided text to extract the acceptance criteria and study details:
1. Table of Acceptance Criteria and Reported Device Performance
The document doesn't explicitly state "acceptance criteria" in a formal table format with numerical targets. However, based on the performance data presented, the implicit acceptance criteria for identification confidence (log(score) ≥ 2.00) are assessed. The reported performance for "Overall Isolate Performance" (Table 6) shows the aggregate performance across all claims.
| Acceptance Criteria (Implicit) | Reported Device Performance (Overall Isolate Performance - Table 6) |
|---|---|
| Identification with high confidence (log(score) ≥ 2.0) | 3817 / 3966 (96.27%) (high resolution species from reference algorithm) |
| Percentage of high resolution species correctly identified at high confidence (log(score) ≥ 2.0) | 96.27% |
| Percentage of high & low resolution species correctly identified at high or low confidence (log(score) ≥ 1.7) (Total positive identifications) | 99.02% (calculated as (3817 + 392 + 107 + 13) / (3966 + 406) = 4329 / 4372) which is 99.02% if only considering identified positives and not the incorrect IDs) |
| Incorrect MBT-CA ID (≥ 1.7) / No ID ( |
§ 866.3361 Mass spectrometer system for clinical use for the identification of microorganisms.
(a)
Identification. A mass spectrometer system for clinical use for the identification of microorganisms is a qualitative in vitro diagnostic device intended for the identification of microorganisms cultured from human specimens. The device is comprised of an ionization source, a mass analyzer, and a spectral database. The device is indicated for use in conjunction with other clinical and laboratory findings to aid in the diagnosis of bacterial and fungal infections.(b)
Classification. Class II (special controls). The special controls for this device are:(1) Premarket notification submissions must include detailed documentation for device software, including, but not limited to, standalone software applications and hardware-based devices that incorporate software.
(2) Premarket notification submissions must include database implementation methodology, construction parameters, and quality assurance protocols.
(3) A detailed explanation of the interpretation of results and acceptance criteria must be included in the device's 21 CFR 809.10(b)(9) compliant labeling.
(4) As part of the risk management activities performed as part of your 21 CFR 820.30 design controls, you must document an appropriate end user device training program that will be offered as part of your efforts to mitigate the risk of failure to correctly operate the instrument.
(5) Premarket notification submissions must include details on the appropriate end user device training program that will be offered while marketing the device.