(194 days)
Microlife MT19S1R Instant Digital Electronic Thermometer is used for the intermittent measurement and monitoring of oral human body temperature. The intended use of this thermometer is for ages 18 months and above.
This Instant Digital Electronic Thermometer enables very fast and reliable measurements and with its predicative technology the thermometer offers a very high clinical accuracy and has been designed to provide a maximum of user-friendliness.
The basic principle of this thermometer's that change of thermistor resistance, caused by changes of temperature, are converted to changes of frequency of RC oscillator circuit, Therefore, temperature can be given by measuring the frequency of oscillator.
The provided document describes the Microlife Instant Digital Electronic Thermometer, Model MT19S1R, and its substantial equivalence to a predicate device. However, it does not contain the detailed clinical study results and acceptance criteria in the format requested. The document focuses on regulatory submission and comparisons to a predicate device, rather than a detailed performance study with specific metrics.
Therefore, much of the requested information cannot be extracted directly from this document.
Here's a breakdown of what can be inferred or directly stated from the provided text, and what is missing:
1. A table of acceptance criteria and the reported device performance
This information is not explicitly provided in the document. The document states compliance with ASTM E1112, which is the standard for electronic thermometers and would define accuracy requirements. However, the specific acceptance criteria used for this submission and the numerical results are not listed.
2. Sample size used for the test set and the data provenance (e.g., country of origin of the data, retrospective or prospective)
- Sample Size: Not explicitly stated. The document mentions "Controlled human clinical studies were conducted," but the number of subjects is not provided.
- Data Provenance: Not explicitly stated. It mentions "clinical data was presented," which implies prospective collection for the study. Country of origin is not specified.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g., radiologist with 10 years of experience)
This information is not provided as the device measures temperature, and ground truth would likely be established against a reference thermometer, not by expert interpretation.
4. Adjudication method (e.g., 2+1, 3+1, none) for the test set
This information is not applicable/provided as the device measures temperature, which typically involves direct comparison to a reference standard, not expert adjudication of subjective findings.
5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance
This information is not applicable/provided. The device is a thermometer, not an AI-assisted diagnostic tool requiring human reader studies.
6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done
The entire device operates as a standalone algorithm for temperature measurement. The document states, "Clinical data was presented which evaluated clinical bias, clinical uncertainty and clinical repeatability per the Microlife Clinical Test Protocol outline." This implies a standalone evaluation of the device's accuracy.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.)
The ground truth for temperature measurement would typically be established using a highly accurate reference thermometer (e.g., a calibrated mercury thermometer or a laboratory-grade electronic thermometer). The document implies this by stating "clinical bias, clinical uncertainty and clinical repeatability" were evaluated, which requires a reference standard. However, the specific type of reference used is not explicitly detailed.
8. The sample size for the training set
The device is a traditional electronic thermometer, not an AI/ML model that requires a "training set" in the conventional sense. The "training set" concept is not applicable.
9. How the ground truth for the training set was established
As above, the concept of a "training set" and its ground truth is not applicable to this type of device.
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SEP 1 2007
EXHIBIT #la
510(K) SUMMARY
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR §807.92.
The assigned 510(k) number is:
-
- Submitter's Identification:
Microlife Intellectual Property GmbH, Switzerland Espenstrasse 139 9443 Widnau / Switzerland Date Summary Prepared: February 22, 2007
- Submitter's Identification:
-
- Name of the Device: Microlife Instant Digital Electronic Thermometer, Model MT19S1R
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- Predicate Device Information: Microlife Instant Digital Electronic Thermometer, Model MT1811, K#04310.
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- Device Description:
This Instant Digital Electronic Thermometer enables very fast and reliable measurements and with its predicative technology the thermometer offers a very high clinical accuracy and has been designed to provide a maximum of user-friendliness.
The basic principle of this thermometer's that change of thermistor resistance, caused by changes of temperature, are converted to changes of frequency of RC oscillator circuit, Therefore, temperature can be given by measuring the frequency of oscillator.
- ട്. Intended Use:
Microlife MT1 951 R Instant Digital Electronic Thermometer is used for the intermittent measurement and monitoring of oral human body temperature. The intended use of this thermometer is for ages 18 months and above.
EXHIBIT #la-l
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ର. Comparison to Predicate Devices:
The Microlife Instant Digital Electronic Thermometer, Model MT1 951 R is substantially equivalent to Microlife Instant Digital Electronic Thermometer, Model MTI8I1, K#043110 which has the similar intended use and is similar in design to the predicate device.
The Microlife Instant Digital Electronic Thermometer MT1 9S1R and the predicate device are identical in the temperature measurements algorithm and fundamental scientific technology. They mainly differ in the "Try again" function. When abnormal action is detected, the thermometer will stop playing the melody and displa/ ---- and hear if Try again" speaking. The subject device also differs from the predicate device in measuring location, melody Great Job, curve probe tip and shape. In all, these differences do not affect the accuracy and normal use of this device because they use the same fundamental scientific technology, therefore, they are substantial equivalent.
Discussion of Non-Clinical Tests Performed for Determination of Substantial Equivalence 7. are as follows:
Compliance to applicable voluntary standards includes ASTM £1112, as well as 1EC60601-1 and 1EC60601-l-2 requirements.
Guidance documents included the FDA Guidance on the Content of Premarket Notification 510(K) Submissions for Clinical Electronic Thermometers.
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- Discussion of Clinical Tests Performed:
Controlled human clinical studies were conducted using the Microlife Instant Digital Electronic Thermometer, Model MT1 951 R. Clinical data was presented which evaluated clinical bias, clinical uncertainty and clinical repeatability per the Microlife Clinical Test Protocol outline.
- Discussion of Clinical Tests Performed:
9. Conclusions:
The Microlife Instant Digital Electronic Thermometer, Model MT1 9S1 R has the similar intended use and similar technological characteristics as the Microlife Instant Digital Electronic Thermometer, Model MT1BI1. Moreover, bench testing contained in this submission supplied demonstrates that any differences in their characteristics do not raise any new questions of safety or effectiveness. Thus, the Microlife Instant Digital Electronic Thermometer, Model MT19S1R is substantially equivalent to the predicate device.
EXHIBIT #la-2
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized caduceus symbol, which is a staff with two snakes coiled around it, overlaid on a circular seal. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES-USA" is arranged around the perimeter of the circle. The logo is black and white.
SEP 1 1 2007
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Microlife Intellectual Property GmbH C/O Ms. Susan D. Goldstein-Falk Official Correspondent MDI Consultants, Incorporated 55 Northern Boulevard, Suite 200 Great Neck, New York 11021
Re: K070590
Trade/Device Name: Microlife Instant Digital Electronic Thermometer, Model MT19S1R Regulation Number: 880.2910 Regulation Name: Clinical Electronic Thermometer Regulatory Class: II Product Code: FLL Dated: September 6, 2007 Received: September 7, 2007
Dear Ms. Goldstein-Falk:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), 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 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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Page 2 - Ms. Goldstein-Falk
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); 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.
This letter will allow you to begin marketing your device as described in your Section 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), please contact the Office of Compliance at (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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 (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html,
Sincerely vours.
Chiu Lin, Ph.D.
Chiu Lin, Ph.D. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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EXHIBIT B
Indications for Use
510(k) Number (if known): K070590
Device Name: Microlife Instant Digital Electronic Thermometer, Model MT19S1R
Indications For Use:
Microlife MT19S1R Instant Digital Electronic Thermometer is used for the intermittent measurement and monitoring of oral human body temperature. The intended use of this thermometer is for ages 18 months and above.
Prescription Use __ AND/OR (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
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Antone
( Nision Sign-Off) Division of Anesthesiology, General Hospital, Infection Control, Dental Device
510(k) Number:_ Ka 20 Sg
§ 880.2910 Clinical electronic thermometer.
(a)
Identification. A clinical electronic thermometer is a device used to measure the body temperature of a patient by means of a transducer coupled with an electronic signal amplification, conditioning, and display unit. The transducer may be in a detachable probe with or without a disposable cover.(b)
Classification. Class II (performance standards). The device is exempt from the premarket notification procedures in part 807, subpart E of this chapter, subject to the limitations in § 880.9 and the following conditions for exemption:(1) Device is not a clinical thermometer with telethermographic functions;
(2) Device is not a clinical thermometer with continuous temperature measurement functions; and
(3) Appropriate analysis and testing (such as that outlined in the currently FDA-recognized editions, as appropriate, of ISO 80601-2-56, “Medical electrical equipment—Part 2-56: Particular requirements for basic safety and essential performance of clinical thermometers for body temperature measurement,” or ASTM E1965, “Standard Specification for Infrared Thermometers for Intermittent Determination of Patient Temperature,” or ASTM E1112, “Standard Specification for Electronic Thermometer for Intermittent Determination of Patient Temperature,” or ASTM E1104, “Standard Specification for Clinical Thermometer Probe Covers and Sheaths”) must validate specifications and performance of the device.