K Number
K191896
Manufacturer
Date Cleared
2019-10-31

(108 days)

Product Code
Regulation Number
880.6880
Panel
HO
Reference & Predicate Devices
Predicate For
N/A
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
Intended Use

The Belimed Steam Sterilizer MST-H TOP 5000 models 9-6-9 HS1, 9-6-12 HS1, 9-6-12 HS1, 9-6-15 HS1, 9-6-15 HS2, 9-6-18 HS1, 9-6-18 HS2, GR 9-6-9 HS1, GR 9-6-12 HS1, GR 9-6-12 HS1, GR 9-6-15 HS1, GR 9-6-15 HS2, GR 9-6-18 HS1, and GR 9-6-18 HS2 are designed for the sterilization of non-porous and porous heat and moisture stable materials used in healthcare facilities.

Device Description

The Belimed Steam Sterilizers MST-H TOP 5000, models 9-6-9, 9-6-12, 9-6-15, and 9-6-18 are available in a single door (HS1) or double door (HS2) version.

The sterilizers are available in a carriage loader and a ground loader (GR) version.

The sterilizers are equipped with Prevacuum, Gravity, Liquid, Air Leak Test and BowieDick Test cycles.

The Belimed Steam Sterilizers TOP 5000 are equipped with the following predefined cycles (Table 2):

AI/ML Overview

Here's a breakdown of the acceptance criteria and study information for the Belimed Steam Sterilizer MST-H TOP 5000, based on the provided text:

1. Table of Acceptance Criteria and Reported Device Performance

Test PerformedAcceptance CriteriaReported Device Performance
Biological Performance Tests:
Sterilization Efficacy Validation (PreVac 270F 4S / 30Dry, 25 lbs wrapped instrument PCD)Sterility assurance level (SAL) 10-6, time-at-temperature sufficient to produce an F0 of at least 12 minutes by half cycle, moisture retention of less than 20% increasePass
Sterilization Efficacy Validation (PreVac 270F 4S / 25 lbs wrapped instrument PCD)Sterility assurance level (SAL) 10-6, time-at-temperature sufficient to produce an F0 of at least 12 minutes by half cyclePass
Physical Performance Test:
Chamber temperature profile+3°C (or +6°F) and -0°C (or -0°F) of the selected sterilization exposure temperaturePass

2. Sample Size Used for the Test Set and Data Provenance

  • Sample Size for Test Set:
    • Biological Performance Tests: For the "PreVac 270F 4S / 30Dry, 25 lbs wrapped instrument PCD," it states "Full cycle / 3 runs." For the "PreVac 270F 4S / 25 lbs wrapped instrument PCD," it states "Full cycle / 3 runs" and "Half cycle 2 minutes / 3 runs." This indicates a total of 9 runs for the biological performance tests (3 for the 30Dry full cycle, 3 for the 25lb full cycle, and 3 for the 25lb half cycle).
    • Physical Performance Test: The "Chamber temperature profile" test mentions "with empty chamber," but does not explicitly state the number of runs or specific sample size beyond that.
  • Data Provenance: Not explicitly stated. The document refers to "non-clinical testing" and the standards it complies with (ANSI AAMI ST8:2013, ANSI/AAMI/ISO 11138-3, ANSI/AAMI/ISO 14161). This suggests the data was generated through laboratory testing, likely by the manufacturer, in accordance with these U.S. and international standards. It does not provide information about country of origin of the data beyond "Belimed AG" being in Switzerland, or if it was retrospective or prospective.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Their Qualifications

This information is not provided in the document. The tests performed are objective, performance-based tests against established standards for sterilization efficacy and temperature profiles. The "ground truth" here is the pass/fail criteria defined by these standards, not expert evaluation of subjective data.

4. Adjudication Method for the Test Set

This information is not applicable/not provided in the context of these objective, performance-based tests. Adjudication methods like "2+1" or "3+1" are typically used for subjective evaluations (e.g., medical image interpretation) where multiple experts assess the same data and discrepancies need to be resolved. For device performance testing against defined metrics, the results are direct measurements compared to acceptance criteria.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study was done, and its effect size

No, an MRMC comparative effectiveness study was not done. This type of study is relevant for diagnostic devices involving human interpretation (e.g., radiologists reading images) and would assess the impact of AI assistance on human performance. The device described is a steam sterilizer, which does not involve human interpretation in its operational performance.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was done

Yes, a standalone performance study was done. The performance tests ("Biological Performance Tests" and "Physical Performance Test") evaluate the sterilizer's function itself (algorithm only, if one considers the sterilizer's programmed cycles as an algorithm). There is no "human-in-the-loop" aspect to the sterilizer's core function of sterilization during these tests.

7. The Type of Ground Truth Used

The ground truth used for the performance tests is based on defined performance standards and scientific parameters for sterilization efficacy and physical characteristics.

  • For biological performance, the ground truth involves achieving a Sterility Assurance Level (SAL) of 10^-6 and a time-at-temperature (F0) of at least 12 minutes by half cycle, along with specific moisture retention percentages. These are objective, measurable outcomes derived from scientific principles of sterilization.
  • For physical performance, the ground truth is the chamber temperature profile being within a specific range (+3°C / +6°F and -0°C / -0°F of the target temperature).

These are not based on expert consensus, pathology, or outcomes data in the typical medical diagnostic sense, but rather on engineering and microbiological performance standards.

8. The Sample Size for the Training Set

This information is not applicable/not provided. This device is a steam sterilizer, a medical device with pre-programmed cycles and physical components, not an AI or machine learning algorithm that requires a "training set" in the conventional sense. The "training" of such a device primarily involves its design, engineering, and adherence to established manufacturing and performance standards.

9. How the Ground Truth for the Training Set was Established

This information is not applicable/not provided for the same reasons as point 8. The "ground truth" for the development of such a device stems from engineering specifications, regulatory standards (e.g., ANSI/AAMI ST8:2013), and validated sterilization principles rather than a labeled dataset used to train an AI model.

§ 880.6880 Steam sterilizer.

(a)
Identification. A steam sterilizer (autoclave) is a device that is intended for use by a health care provider to sterilize medical products by means of pressurized steam.(b)
Classification. Class II (performance standards).