(249 days)
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No
The document describes a standard sterilization device and its validation studies, with no mention of AI or ML technologies. The software validation section refers to general FDA guidance for medical device software, not specific AI/ML validation.
No.
The device is a sterilizer for medical equipment, not a therapeutic device used in treatment.
No
The device description clearly states that the Sterilucent PSD-85 Hydrogen Peroxide Sterilizer is intended for "terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities," not for diagnosis.
No
The device description clearly states it is a "self contained stand alone device" that uses "vaporized hydrogen peroxide as the sterilant," indicating it is a physical hardware device. While it mentions "Software Validation," this refers to the software contained within the hardware device, not a standalone software-only device.
Based on the provided text, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use clearly states that the device is for the "terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities." This is a process applied to medical devices themselves, not a test performed on biological samples to diagnose a condition.
- Device Description: The description reinforces this by explaining it's a sterilizer using vaporized hydrogen peroxide to process medical devices.
- Lack of IVD Characteristics: The text does not mention any of the typical characteristics of an IVD, such as:
- Analyzing biological samples (blood, urine, tissue, etc.)
- Providing diagnostic information about a patient's health
- Using reagents or assays for testing
The device is a sterilizer, which is a type of medical device used to prepare other medical devices for use. It does not fit the definition of an In Vitro Diagnostic device.
N/A
Intended Use / Indications for Use
The Sterilucent PSD-85 Hydrogen Peroxide Sterilizer (PSD-85) is a vaporized hydrogen peroxide sterilizer intended for use in the terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities. The two pre-programmed sterilization cycles, the Lumen Cycles, operate at low pressure and low temperature and are thus suitable for processing medical devices sensitive to heat and moisture.
The PSD-85 Lumen Cycle can sterilize*:
- · Instruments with diffusion-restricted spaces such as the hinged portion of forceps and scissors
- · Medical devices with a single stainless steel lumen with:
- o An inside diameter of 1 mm or larger and a length of 60 mm or shorter
- o An inside diameter of 2 mm or larger and a length of 250 mm or shorter
- o An inside diameter of 3 mm or larger and a length of 350 mm or shorter
*The validation testing for all lumen sizes was conducted using a maximum of ten (10) lumens per load. Hospital loads should not exceed the maximum number of lumens validated by this testing. The validation studies were performed using a validation load consisting of one instrument tray with a total weight of 10.4 lbs.
The PSD-85 Non-Lumen Cycle can sterilize**:
· Non-lumen instruments including non-luments with stainless steel diffusion-restricted areas such as the hinged portion of forceps or scissors.
** The validation studies were conducted using a validation load consisting of one instrument tray with a total weight of 25.3 lbs.
Product codes (comma separated list FDA assigned to the subject device)
MLR
Device Description
The Sterilucent PSD-85 Hydrogen Peroxide Sterilizer (PSD-85) is a self contained stand alone device, using vaporized hydrogen peroxide as the sterilant. The PSD-85 is intended for use in the terminal sterilization of cleaned, rinsed, and dried, reusable metal and non-metal medical device used in healthcare facilities. The sterilization cycle operates at low pressure and temperatures, and is therefore suitable for processing medical devices that are sensitive to heat and moisture. The hydrogen peroxide vapor is generated by heating aqueous hydrogen peroxide and injecting into a chamber.
Mentions image processing
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Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
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Anatomical Site
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Indicated Patient Age Range
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Intended User / Care Setting
Healthcare facilities
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
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Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Summary of Non-clinical Performance Data
Testing was performed using the "overkill" method.
Pre-Validation Testing
Test Organism: Geobacillus stearothermophilus
Process Variables and Parameters: Testing was conducted to characterize the effect of process parameters on lethality. The four critical process parameters are chamber wall temperature, vaporizer temperature, injection pressure and vaporized hydrogen peroxide concentration. The level tested for each parameter was selected to provide a worst case situation for the test series and to be outside the abort levels or settings for the sterilizer. The study showed that process lethality was unaffected over the range of tested process parameters.
PSD-85 Process Validation
Demonstration of Dose-Response Relationship to Increasing Hydrogen Peroxide Concentration: Dose response testing was performed using various materials (representative of materials used in medical devices) as spore carriers. Geobacillus stearothermophilus death kinetics data obtained for each material tested demonstrate a positive "dose response" to increasing concentration of hydrogen peroxide injected under half cycle conditions in the PSD-85. There were no spore survivors on any material at concentrations lower than the standard exposure concentration for the Lumen and Non-Lumen Cycles. The result demonstrates that the dose response observed is not limited to a single substrate and in each case >6 Spore Log Reduction (SLR) was observed for a half cycle exposure.
Surface Sterilization
The purpose of the study was to demonstrate sterilization of medical device surfaces. Geobacillus stearothermophilus spores were inoculated on a wide variety of material coupons that were representative of materials used in re-usable medical devices. The coupons were inoculated with at least 10^6 Geobacillus stearothermophilus spores and then exposed to ½ cycle sterilization parameters. Results from this testing demonstrate a Sterility Assurance Level (SAL) of at least 10^-6 for medical device surface sterilization in the PSD-85 for all materials listed as recommended for use in the PSD-85.
Mated Surface Sterilization
The purpose of the study was to demonstrate sterilization of mated medical device surfaces using the PSD-85. Geobacillus stearothermophilus spores were inoculated on a variety of medical device materials. The materials were than mated to the same material and exposed to ½ cycle sterilization parameters. An SAL of least 10^-6 was demonstrated for mated material sterilization.
Lumen Sterilization
The purpose of this validation test was to demonstrate that the PSD-85 could effectively sterilize specific dimensions of rigid stainless steel lumened medical devices. Testing was completed by placing at least 10^6 Geobacillus stearothermophilus spores in the center of the lumens and exposing them to ½ cycle sterilization parameters. There were no spore survivors after multiple ½ cycle exposure tests. Results from this testing demonstrate an SAL of at least 10^-6 for lumen sterilization in the PSD-85 for the lumen dimensions listed as indicated for use in the PSD-85.
Bacteriostasis Testing
This purpose of bacteriostasis testing is to determine if materials exposed to the PSD-85 full sterilization cycle inhibit the growth of Geobacillus stearothermophilus spores. Bacteriostasis testing was performed with coupons of representative materials. The materials were exposed to three consecutive full sterilization cycles. Following exposure, the coupons were transferred to growth media and were inoculated with 100 colony-forming units of Geobacillus stearothermophilus. All test materials demonstrated the desired outgrowth within the 7 day incubation period. The test data indicates no bacteriostatic effect from materials processed in the PSD-85.
Simulated Use Testing
Simulated use testing was performed to confirm sterilization of medical device outer surface and lumens after processing in the PSD-85. Representative lumen and non-lumen devices were inoculated with at least 10^6 Geobacillus stearothermophilus spores, suspended in an inorganic and organic challenge soil and exposed to a full sterilization cycle. This process was repeated in triplicate for devices that were not clean for both the Lumen and Non-Lumen Cycles. The results showed sterility of all tested devices.
In-Use Testing
Devices representative of surface-features and lumen claims for the PSD-85 were selected for sterility testing. Devices tested were used in routine surgeries at a hospital and included stainless steel devices with open surfaces, mated or hinged surfaces and representative stainless steel lumen devices. The used devices were washed and dried by the hospital according to hospital protocol and transported to the PSD-85 location for processing. The results of the in-use testing demonstrated that the PSD-85 successfully sterilizes surgical instruments used in clinical cases.
Supporting Microbiological Testing
Sterilizing agent efficacy (Sporicidal Activity of a Disinfectant) testing was performed in the PSD-85 in accordance with the guidelines provided in AOAC Official Method 966.04, Sporicidal Activity of Disinfectants. None of the carriers demonstrated growth.
Software Validation
Software validation was performed according to FDA's moderate level of concern recommendations provided in the document "Guidance for the Content for Premarket Submissions for Software Contained in Medical Devices".
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
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Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
AMSCO® V-PROTM 1 Plus Low Temperature Sterilization System (K083097)
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
Not Found
§ 880.6860 Ethylene oxide gas sterilizer.
(a)
Identification. An ethylene gas sterilizer is a nonportable device intended for use by a health care provider that uses ethylene oxide (ETO) to sterilize medical products.(b)
Classification. Class II (performance standards).
0
Image /page/0/Picture/1 description: The image shows the logo for the Department of Health & Human Services - USA. The logo is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. In the center of the circle is an abstract symbol that resembles a stylized human figure.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 31, 2014
Sterilucent. Inc. Mr. Peter R. Kalkbrenner Director of Engineering 1400 Marshall Street NE Minneapolis, MN 55413
Re: K140464
Trade/Device Name: Sterilucent PSD-85 Hydrogen Peroxide Sterilizer Regulation Number: 21 CFR 880.6860 Regulation Name: Ethylene Oxide Gas Sterilizer Regulatory Class: II Product Code: MLR Dated: September 25, 2014 Received: October 2, 2014
Dear Mr. Kalkbrenner:
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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
1
Page 2 - Mr. Kalkbrenner
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 comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office
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 (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
of Surveillance and Biometrics/Division of Postmarket Surveillance.
Sincerely yours,
Teiashri Purohit-Sheth, M.D.
Tejashri Purohit-Sheth, M.D. Clinical Deputy Director DAGRID/ODE/CDRH FOR
Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
2
Indications for Use
510(k) Number (if known) K140464
Device Name
Sterilucent PSD-85 Hydrogen Peroxide Sterilizer
Indications for Use (Describe)
The Sterilucent PSD-85 Hydrogen Peroxide Sterilizer (PSD-85) is a vaporized hydrogen peroxide sterilizer intended for use in the terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities. The two pre-programmed sterilization cycles, the Lumen Cycles, operate at low pressure and low temperature and are thus suitable for processing medical devices sensitive to heat and moisture.
The PSD-85 Lumen Cycle can sterilize*:
- · Instruments with diffusion-restricted spaces such as the hinged portion of forceps and scissors
- · Medical devices with a single stainless steel lumen with:
- o An inside diameter of 1 mm or larger and a length of 60 mm or shorter
- o An inside diameter of 2 mm or larger and a length of 250 mm or shorter
o An inside diameter of 3 mm or larger and a length of 350 mm or shorter
*The validation testing for all lumen sizes was conducted using a maximum of ten (10) lumens per load. Hospital loads should not exceed the maximum number of lumens validated by this testing. The validation studies were performed using a validation load consisting of one instrument tray with a total weight of 10.4 lbs.
The PSD-85 Non-Lumen Cycle can sterilize**:
· Non-lumen instruments including non-luments with stainless steel diffusion-restricted areas such as the hinged portion of forceps or scissors.
** The validation studies were conducted using a validation load consisting of one instrument tray with a total weight of 25.3 lbs.
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
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Image /page/3/Picture/0 description: The image shows the logo for Sterilucent. The logo consists of a blue icon resembling interconnected circles, followed by the word "sterilucent" in blue, lowercase letters. Below the word "sterilucent" is the phrase "scientific sterilization solutions" also in blue, lowercase letters.
510(k) Summary for the Sterilucent PSD-85 Hydrogen Peroxide Sterilizer
| Owner: | Sterilucent, Inc. |
|---|---|
| Address: | 1400 Marshall Street NE |
| Minneapolis, MN 55413 | |
| Telephone: | 612-767-3260 |
| Fax: | 612-767-3261 |
| Contact: | Peter R. Kalkbrenner |
| Director of Engineering | |
| Telephone: | 612-767-3253 |
| Fax: | 612-767-3261 |
| Summary Date: | 31 October, 2014 |
sterilucent 1400 Marshall Street NE Minneapolis, MN 55413 | ph (612) 767.3261 | www.sterilucent.com
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Device Name and Classification
| Trade Name: | Sterilucent PSD-85 Hydrogen Peroxide Sterilizer |
|---|---|
| Common/Usual Name: | Vapor Phase Hydrogen Peroxide Sterilizer |
| Classification Name: | Sterilizer, Ethylene Oxide Gas |
| Device Class: | Class II |
| FDA Classification Number: | 880.6860 |
| Product Code: | MLR |
Predicate Device
AMSCO® V-PROTM 1 Plus Low Temperature Sterilization System (K083097)
Device Description
The Sterilucent PSD-85 Hydrogen Peroxide Sterilizer (PSD-85) is a self contained stand alone device, using vaporized hydrogen peroxide as the sterilant. The PSD-85 is intended for use in the terminal sterilization of cleaned, rinsed, and dried, reusable metal and non-metal medical device used in healthcare facilities. The sterilization cycle operates at low pressure and temperatures, and is therefore suitable for processing medical devices that are sensitive to heat and moisture. The hydrogen peroxide vapor is generated by heating aqueous hydrogen peroxide and injecting into a chamber.
Statement of Intended Use
The PSD-85 is a vaporized hydrogen peroxide sterilizer intended for use in the terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities. The two pre-programmed sterilization cycles, the Lumen and the Non-Lumen Cycles, operate at low pressure and low temperature and are thus suitable for processing medical devices sensitive to heat and moisture.
The PSD-85 Lumen Cycle can sterilize*:
5
- Instruments with diffusion-restricted spaces such as the hinged portion of forceps . and scissors
- Medical devices with a single stainless steel lumen with: .
- An inside diameter of 1 mm or larger and a length of 60 mm or shorter O
- An inside diameter of 2mm or larger and a length of 250 mm or shorter o
- An inside diameter of 3mm or larger and a length of 350 mm or shorter O
*The validation testing for all lumen sizes was conducted using a maximum of ten (10) lumens per load. Hospital loads should not exceed the maximum number of lumens validated by this testing. The validation studies were performed using a validation load consisting of one instrument tray with a total weight of 10.4 lbs.
The PSD-85 Non-Lumen Cycle can sterilize**:
- . Non-lumen instruments including non-luments with stainless steel diffusion-restricted areas such as the hinged portion of forceps or scissors.
**The validation studies were conducted using a validation load consisting of one instrument tray with a total weight of 25.3 lbs.
Technological Characteristics Summary Comparison
The PSD-85 has similar technological characteristics as the predicate device as shown in the detailed side by side comparison in the following table.
| PSD-85 | V-Pro 1 Plus | |
|---|---|---|
| Physical Characteristic | Self contained, stand alone | |
| device | Self contained, stand alone | |
| device | ||
| Design and Construction | Welded frame onto which is | |
| mounted the sterilization | ||
| chamber along with a variety of | ||
| instruments and components, | ||
| controls, piping, and vacuum | ||
| pump, all of which is housed in | ||
| covered frame | Welded frame onto which is | |
| mounted the sterilization | ||
| chamber along with a variety of | ||
| instruments and components, | ||
| controls, piping, and vacuum | ||
| pump, all of which is housed in | ||
| covered frame | ||
| -Chamber volume | 85 L | 136 L |
| -Weight | 440 pounds (200 kg) | 755 pounds (342 kg) |
| -Maximum Power | 1650 Watts | 3680 Watts |
| Sterilant | 59% aqueous solution of | |
| hydrogen peroxide | 59% aqueous solution of | |
| hydrogen peroxide | ||
| PSD-85 | V-Pro 1 Plus | |
| Internal Process Monitors | ||
| -Temperature | Chamber and vaporizer | |
| thermistors | Chamber and vaporizer | |
| temperature probes | ||
| -Pressure | Chamber pressure transducers | Chamber pressure transducers |
| -Sterilant Concentration | Real-time hydrogen peroxide | |
| vapor monitor | None | |
| Control System | Atmel AT91SAM7 | |
| Microprocessor | Programmable logic control | |
| (PLC) | ||
| Operational Principle | Sterilization of the intended | |
| devices by exposure under | ||
| controlled conditions of | ||
| pressure, temperature, and time | Sterilization of the intended | |
| devices by exposure under | ||
| controlled conditions of | ||
| pressure, temperature, and time | ||
| Operational Parameters | Low pressure (vacuum; sub- | |
| atmospheric down to 0.4 Torr) | ||
| and temperature (55 °C) | Low pressure (vacuum; sub- | |
| atmospheric down to 0.4 Torr) | ||
| and temperature (50 °C) | ||
| Pre-processing requirements | Cleaned, rinsed and dried | |
| devices | Cleaned, rinsed and dried | |
| devices | ||
| Devices | Reusable metal and non-metal | |
| medical devices that are used in | ||
| healthcare facilities, including | ||
| those that are sensitive to heat | ||
| and moisture | Reusable metal and non-metal | |
| medical devices that are used in | ||
| healthcare facilities, including | ||
| those that are sensitive to heat | ||
| and moisture | ||
| Sterilization Cycles | Two (2) pre-programmed: | |
| Lumen (approximately 72 | ||
| minutes) and Non-Lumen | ||
| (approximately 40 minutes) | Two (2) pre-programmed: | |
| Lumen (approximately 63 | ||
| minutes) and Non-Lumen | ||
| (approximately 28 minutes) | ||
| Monitoring | Both systems have biological and chemical indicators | |
| - Biological Indicator | Self-contained biological | |
| indicator, Geobacillus | ||
| stearothermophilus | Self-contained biological | |
| indicator, Geobacillus | ||
| stearothermophilus | ||
| - Process Challenge Device / | ||
| Routine Test Pack | Self-contained biological | |
| indicator, Geobacillus | ||
| stearothermophilus | Self-contained biological | |
| indicator, Geobacillus | ||
| stearothermophilus | ||
| -Chemical Indicator | Sterilucent CI Strips, Labels and | |
| Tape | Steris VHP – HC CI | |
| Miscellaneous | The two sterilizers have equivalent packaging options | |
| - Load Packaging | Tyvek/Mylar pouches, trays | |
| wrapped with polypropylene | ||
| sterilization wrap, rigid | ||
| containers | Tyvek/Mylar pouches, trays | |
| wrapped with polypropylene | ||
| sterilization wrap, rigid | ||
| containers |
6
7
Technological differences between the PSD-85 and the predicate device are minimal and mainly limited to differences in sterilization cycle parameters that do not affect the relative safety or efficacy of the two devices. The PSD-85 sterilization cycle parameters have been shown to provide a level of safety and efficacy at least equivalent to that of the predicate device. Differences include:
- . The PSD-85 has a smaller sterilization chamber, smaller overall size, is lighter, and uses less energy compared to the predicate device.
- The PSD-85 chamber temperature is 55°C versus 50°C for the predicate device. . This slightly higher temperature minimizes condensation of hydrogen peroxide vapor on the load.
- . The PSD-85 conditioning phase used to detect and, if necessary, remove residual moisture from loads being sterilized, is more sophisticated than the predicate device in that the PSD-85 process takes extra steps to reduce the probability of ice formation on the load.
- The PSD-85 uses a variable dose of sterilant based on real time measured and monitored hydrogen peroxide vapor concentration versus a fixed dose of sterilant for the predicate device. Worst case biological performance, sterilant residue, and biocompatibility testing has demonstrated that the safety and efficacy of the PSD-85 is equivalent or better than that of the predicate device.
- . The PSD-85 aeration period involves an extra two minute period where aeration is enhanced by actively moving air through the chamber and the sterilized load. Worst case sterilant residue, biocompatibility, and toxic residue tests and analyses indicate that the PSD-85 exposure sequence and aeration period reduces residual sterilant and other potentially toxic substances to a level of safety equal to or greater than the predicate device.
Summary of Non-clinical Performance Data
Testing was performed using the "overkill" method.
Pre-Validation Testing
Test Organism: Geobacillus stearothermophilus
Process Variables and Parameters: Testing was conducted to characterize the effect of process parameters on lethality. The four critical process parameters are chamber wall temperature, vaporizer temperature, injection pressure and vaporized hydrogen peroxide concentration. The level tested for each parameter was selected to provide a worst case situation for the test series and to be outside the abort levels or settings for the sterilizer. The study showed that process lethality was unaffected over the range of tested process parameters.
8
PSD-85 Process Validation
Demonstration of Dose-Response Relationship to Increasing Hydrogen Peroxide Concentration
Dose response testing was performed using various materials (representative of materials used in medical devices) as spore carriers.
Geobacillus stearothermophilus death kinetics data obtained for each material tested demonstrate a positive "dose response" to increasing concentration of hydrogen peroxide injected under half cycle conditions in the PSD-85. There were no spore survivors on any material at concentrations lower than the standard exposure concentration for the Lumen and Non-Lumen Cycles. The result demonstrates that the dose response observed in not limited to a single substrate and in each case >6 Spore Log Reduction (SLR) was observed for a half cycle exposure.
Surface Sterilization
The purpose of the study was to demonstrate sterilization of medical device surfaces. Geobacillus stearothermophilus spores were inoculated on a wide variety of material coupons that were representative of materials used in re-usable medical devices. The coupons were inoculated with at least 106 Geobacillus stearothermophilus spores and then exposed to ½ cycle sterilization parameters.
Results from this testing demonstrate a Sterility Assurance Level (SAL) of at least 10t6 for medical device surface sterilization in the PSD-85 for all materials listed as recommended for use in the PSD-85.
Mated Surface Sterilization
The purpose of the study was to demonstrate sterilization of mated medical device surfaces using the PSD-85. Geobacillus stearothermophilus spores were inoculated on a variety of medical device materials. The materials were than mated to the same material and exposed to ½ cycle sterilization parameters. An SAL of least 10° was demonstrated for mated material sterilization.
Lumen Sterilization
The purpose of this validation test was to demonstrate that the PSD-85 could effectively sterilize specific dimensions of rigid stainless steel lumened medical devices. Testing was completed by placing at least 1066 Geobacillus stearothermophilus spores in the center of the lumens and exposing them to ½ cycle sterilization parameters. There were no spore survivors after multiple ½ cvcle exposure tests.
Results from this testing demonstrate an SAL of at least 106 for lumen sterilization in the PSD-85 for the lumen dimensions listed as indicated for use in the PSD-85.
Bacteriostasis Testing
9
This purpose of bacteriostasis testing is to determine if materials exposed to the PSD-85 full sterilization cycle inhibit the growth of Geobacillus stearothermophilus spores. Bacteriostasis testing was performed with coupons of representative materials. The materials were exposed to three consecutive full sterilization cycles. Following exposure, the coupons were transferred to growth media and were inoculated with 100 colonyforming units of Geobacillus stearothermophilus. All test materials demonstrated the desired outgrowth within the 7 day incubation period. The test data indicates no bacteriostatic effect from materials processed in the PSD-85.
Simulated Use Testing
Simulated use testing was performed to confirm sterilization of medical device outer surface and lumens after processing in the PSD-85. Representative lumen and non-lumen devices were inoculated with at least 10° Geobacillus stearothermophilus spores, suspended in an inorganic and organic challenge soil and exposed to a full sterilization cycle. This process was repeated in triplicate for devices that were not clean for both the Lumen and Non-Lumen Cycles. The results showed sterility of all tested devices.
In-Use Testing
Devices representative of surface-features and lumen claims for the PSD-85 were selected for sterility testing. Devices tested were used in routine surgeries at a hospital and included stainless steel devices with open surfaces, mated or hinged surfaces and representative stainless steel lumen devices. The used devices were washed and dried by the hospital according to hospital protocol and transported to the PSD-85 location for processing. The results of the in-use testing demonstrated that the PSD-85 successfully sterilizes surgical instruments used in clinical cases.
Supporting Microbiological Testing
Sterilizing agent efficacy (Sporicidal Activity of a Disinfectant) testing was performed in the PSD-85 in accordance with the guidelines provided in AOAC Official Method 966.04, Sporicidal Activity of Disinfectants. None of the carriers demonstrated growth.
Software Validation
Software validation was performed according to FDA's moderate level of concern recommendations provided in the document "Guidance for the Content for Premarket Submissions for Software Contained in Medical Devices".
Overall Performance Conclusion Statement
The non-clinical studies demonstrated that the PSD-85 is as safe and effective for the terminal sterilization of cleaned, rinsed and dried reusable metal and nonmetal medical devices used in healthcare facilities, including heat and moisture sensitive medical devices, within the indications for use for the sterilizer, and established substantial equivalence of the PSD-85 to the predicate device, the AMSCO® V-PRO™ 1 Plus Low Temperature Sterilization System.