(180 days)
Not Found
No
The description focuses on digital signal processing and embedded software for basic device functions, with no mention of AI/ML terms or capabilities.
No.
The device is used for detection and amplification of sounds for diagnostic purposes, not for treating or rehabilitating a condition.
Yes
Explanation: The "Intended Use / Indications for Use" section explicitly states that the device is for "medical diagnostic purposes only."
No
The device description clearly outlines hardware components such as a physical device, keypad, OLED display, digital signal processor, and battery, indicating it is not software-only.
Based on the provided information, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- IVD Definition: In Vitro Diagnostics are medical devices used to examine specimens taken from the human body, such as blood, urine, or tissue, to provide information for diagnosis, monitoring, or screening.
- Device Function: The Electronic Stethoscope described here is used to detect and amplify sounds from internal organs (heart, lungs, etc.) directly from the patient's body. It does not analyze samples taken from the body.
- Intended Use: The intended use is for "detection and amplification of sounds from the heart, lungs and other internal organs" and for "physical assessment for medical diagnostic purposes." This involves listening to the body, not analyzing biological samples.
Therefore, the function and intended use of this electronic stethoscope clearly fall outside the scope of In Vitro Diagnostics.
N/A
Intended Use / Indications for Use
The Electronic Stethoscope is intended for the detection and amplification of sounds from the heart, lungs and other internal organs with the use of a selective frequency. It can be used on any person undergoing a physical assessment for medical diagnostic purposes only.
Product codes
DOD, DQD
Device Description
The Mintti Electronic Stethoscope, model smartho-D2 is a healthcare device that picks up sounds of the heart, lungs and other internal organs with the use of selective frequency ranges from 10-2000Hz. After amplification and filtering, the sounds are transferred to the user's ears via an wired-connected headset.
The user interface includes a 5-button keypad and an 1.3' OLED display with a blue back-light. Sound processing is carried out with the aid of a digital signal processor.
The smartho-D2 does not incorporate any off-the-shelf (OTS) software, and it incorporates embedded software which controls all the features of the product, including sound capture, digital signal processing, volume control, OLED display and Bluetooth function.
The smartho-D2 operates on a certificated rechargeable 3.7V/2000mAh lithium ion battery.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
Heart, lungs and other internal organs
Indicated Patient Age Range
Any person
Intended User / Care Setting
Medical diagnostic purposes only. Prescription Use.
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)
Non-Clinical Data:
- Biocompatibility testing: Conducted in accordance with ISO 10993-1. Cytotoxicity, Skin Sensitization, and Skin Irritation tests were conducted.
- Reprocessing: Cleaning and Disinfection: Validation testing results for cleaning and disinfection are adequate and acceptable.
- Electrical safety and electromagnetic compatibility (EMC): Complies with IEC 60601-1:2012, IEC 60601-1-11: 2010, and IEC 60601-1-2: 2014.
- Bench Testing: Demonstrated that the smartho-D2 can perform over its intended range of operation (10-2000Hz). Comparative performance testing demonstrated substantial equivalence to the predicate.
- Software Verification and Validation Testing: Provided in accordance with FDA Guidance for software with a moderate level of concern.
- Risk Analysis: Conducted in accordance with ISO 14971: 2007.
- Wireless Function Testing: Conducted per FDA Guidance Radio Frequency Wireless Technology in Medical Devices dated August 14, 2013 to demonstrate no effect on safe and effective use.
Clinical data:
No animal or clinical testing was submitted in this 510(k).
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 870.1875 Stethoscope.
(a)
Manual stethoscope —(1)Identification. A manual stethoscope is a mechanical device used to project the sounds associated with the heart, arteries, and veins and other internal organs.(2)
Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.(b)
Electronic stethoscope —(1)Identification. An electronic stethoscope is an electrically amplified device used to project the sounds associated with the heart, arteries, and veins and other internal organs.(2)
Classification. Class II (special controls). The device, when it is a lung sound monitor, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.
0
Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA logo on the right. The FDA logo is in blue and includes the letters "FDA" followed by the words "U.S. Food & Drug Administration".
December 18, 2019
Hefei Mintti Medical Technology Co., Ltd. China Shengsheng Cai, General Manager C309, National University Science Park, 602 Huangshan Road, High-tech Zone, Hefei, 230088, CHINA
Re: K191667
Trade/Device Name: Electronic Stethoscope - smartho-D2 Regulation Number: 21 CFR 870.1875 Regulation Name: Stethoscope Regulatory Class: Class II Product Code: DOD Dated: November 20, 2019 Received: November 26, 2019
Dear Shengsheng Cai:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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.
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 of medical device-related adverse events) (21 CFR 803) for
1
devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
Stephen Browning Assistant Director Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
2
Indications for Use
510(k) Number (if known) K191667
Device Name Electronic Stethoscope - smartho-D2
Indications for Use (Describe)
The Electronic Stethoscope is intended for the detection and amplification of sounds from the heart, lungs and other internal organs with the use of a selective frequency. It can be used on any person undergoing a physical assessment for medical diagnostic purposes only.
| 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) |
|---|---|
| ---------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- |
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3
510(k) Summary
Prepared in accordance with the requirements of 21 CFR Part 807.92
| 1. Submitter: | Hefei Mintti Medical Technology Co., Ltd. China
C309, National University Science Park, 602Huangshan Road, High-tech Zone
Hefei City, Anhui Province, 230088, China
Tel.: +86 0551-636388104 |
|------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact
Person: | Shengsheng Cai |
| Prepare date: | December 16, 2019 |
| 2. Device name
and
classification: | Device Name: Electronic Stethoscope
Models: smartho-D2
Classification Name:
21 CFR 870.1875 Stethoscope, Electronic
Product code: DQD
Regulatory Class: Class II |
| 3. Reason for
Submission | New Application. |
| 4. Predicate
Device(s): | 3M Health Care, 3M™ Littmann® Electronic Stethoscope Model 3200 cleared under
K083903 |
| 5. Device
Description: | The Mintti Electronic Stethoscope, model smartho-D2 is a healthcare device that
picks up sounds of the heart, lungs and other internal organs with the use of
selective frequency ranges from 10-2000Hz. After amplification and filtering, the
sounds are transferred to the user's ears via an wired-connected headset.
The user interface includes a 5-button keypad and an 1.3' OLED display with a blue
back-light. Sound processing is carried out with the aid of a digital signal processor.
The smartho-D2 does not incorporate any off-the-shelf (OTS) software, and it
incorporates embedded software which controls all the features of the product,
including sound capture, digital signal processing, volume control, OLED display
and Bluetooth function.
The smartho-D2 operates on a certificated rechargeable 3.7V/2000mAh lithium ion
battery. |
| 6. Indications
for Use: | The Electronic Stethoscope is intended for the detection and amplification of
sounds from the heart, lungs and other internal organs with the use of a selective
frequency. It can be used on any person undergoing a physical assessment for
medical diagnostic purposes only. |
4
7. Predicate Device Comparison
In comparison to the predicate device, the subject device has the same intended use, similar product design, and performance safety as the predicate device.
Please refer to the following table that notes differences between the subject device and predicate device. All the differences do not affect the basic design principle, usage, effectiveness and safety of the subject device. No new questions are raised regarding effectiveness and safety.
| ITEM | Proposed Device | Predicate Device | Comment |
|---|---|---|---|
| smartho-D2 | 3M™ LITTMANN® | ||
| ELECTRONIC | |||
| STETHOSCOPE | |||
| MODEL 3200 | |||
| Regulatory | |||
| Classification | Stethoscope, Electronic | Stethoscope, Electronic | Same |
| Regulation | Class II, 21 CFR 870.1875 | Class II, 21 CFR 870.1875 | Same |
| Product code | DQD | DQD | Same |
| Indications for Use | |||
| Indications for | |||
| Use | The Electronic Stethoscope is | ||
| intended for the detection and | |||
| amplification of sounds from | |||
| the heart, lungs, and other | |||
| internal organs with the use | |||
| of a selective frequency. It | |||
| can be used on any person | |||
| undergoing a physical | |||
| assessment for medical | |||
| diagnostic purposes only. | 3M™ LITTMANN® | ||
| ELECTRONIC | |||
| STETHOSCOPE MODEL | |||
| 3200 is intended for medical | |||
| diagnostic purposes only. It | |||
| may be used for the detection | |||
| and amplification of sounds | |||
| from the | |||
| heart, lungs, arteries, veins, | |||
| and | |||
| other internal organs with the | |||
| use of selective frequency | |||
| ranges.It can be used on any | |||
| person undergoing a physical | |||
| assessment. | Different | ||
| Contraindications | None | None | Same |
| Power Supply | |||
| Source Type | Battery | Battery | Same |
| Battery Type | A rechargeable | ||
| 3.7V/2000mAh lithium ion | |||
| battery | One AA alkaline, lithium, or | ||
| NiMH battery(rechargeable). | Different | ||
| Battery | |||
| Operation Time | 48 Hours | 50-60 Hours | |
| Technical Specifications | |||
| Binaural | |||
| headset | YES | YES | Same |
| Chest-piece | YES | YES | Same |
| Sound | Digital signal processor | Digital signal processor | Same |
| processing | |||
| Display Screen | 1.3' Color OLED | LCD | Different |
| Low Battery Indicator | YES | YES | Same |
| Automatic Power Off | No | YES | Different |
| Volume Control | 1-4 level | 1-9 level | |
| Sound Amplifier | Amplifies up to 100X | Amplifies up to 24X | Different |
| Signal Sampling Rate | 8 kHz | 4 kHz | Different |
| Frequency Response | 20 -2000Hz | ||
| Heart Sound Mode:20-500Hz | |||
| Lung Sound Mode: | |||
| 200-2000Hz | Bell (20-1000 Hz) | ||
| Diaphragm (20-2000 Hz) | |||
| "Extended Range” (50-500 Hz) | Different | ||
| Intuitive keypad | NO | No | Same |
| A/P Chest key | No | No | Same |
| Direct Listening | Only transferred via headset | Littmann® Model 3200 allows | |
| direct listening to sounds in | |||
| real time through the device's | |||
| attached binaurals. | Different | ||
| Recording and Playback | Not on the device itself | Yes - stores twelve (12) 30 | |
| second tracks on device | Different | ||
| Wireless Technology | Yes-uses Bluetooth® at 2.4 GHz | Yes-uses Bluetooth® at 2.4 GHz | Same |
| Ambient & Frictional Noise Reduction Technology | YES | YES | Same |
Table 1 Specific Comparison to Predicate
5
As seen in the comparison tables, the subject and predicate devices have similar design features and performance specifications. The differences between the subject and predicate devices do not raise different questions of safety or effectiveness. Moreover, as demonstrated in the bench testing, the different indications and technological characteristics do not affect the safety and effectiveness of the smartho-D2 Electronic Stethoscope.
8. Performance Testing:
Performance data includes "Non-Clinical Data" and "Clinical Data". Summary of the data provided is below:
Non-Clinical Data:
The following performance data were provided in support of the substantial equivalence determination.
Biocompatibility testing
The biocompatibility evaluation for the smartho-D2 Electronic Stethoscope was conducted in accordance with the International Standard ISO 10993-1 "Biological Evaluation of Medical Devices - Part 1: Evaluation and Testing Within a Risk Management Process," as recognized by FDA. The worst case of the whole system is considered tissue-contacting for a duration of less than 24 hours. And Cytotoxicity, Skin Sensitization and Skin Irritation tests were conducted.
6
Reprocessing: Cleaning and Disinfection
The sterilization and shelf life information provided are acceptable because the subject devices are non-sterile devices. The validation testing results for cleaning and disinfection of the subject devices are adequate and acceptable.
Electrical safety and electromagnetic compatibility (EMC)
Electrical safety and EMC testing were conducted on the smartho-D2 Electronic Stethoscope device, consisting of all the modules and accessories in the system complies with IEC 60601-1:2012 Medical electrical equipment Part 1: General requirements for basic safety and essential performance for safety, IEC 60601-1-11: 2010 MEDICAL ELECTRICAL EQUIPMENT –Part 1-11: General requirements for basic safety and essential performance -Collateral Standard: Requirements for medical electrical equipment and medical electrical systems used in the home healthcare environment, and the IEC 60601-1-2: 2014 Medical electrical equipment -Part 1-2: General requirements for basic safety and essential performance - Collateral Standard: Electromagnetic disturbances - Requirements and tests standard for EMC.
Bench Testing
Bench testing was conducted on the smartho-D2 Electronic Stethoscope device, consisting of all the accessories in the system, which demonstrates that the smartho-D2 can perform over its intended range of operation (10-2000Hz). Comparative performance testing submitted in the 510(k) demonstrated the two devices perform in a substantially equivalent manner.
Software Verification and Validation Testing
Software documentation including verification & validation was provided in accordance with FDA Guidance: Guidance for the Content of Premarket Submissions for Software in Medical Devices for software with a moderate level of concern.
Risk Analvsis
A risk analysis was conducted in accordance with ISO 14971: 2007 - Medical devices -Application of risk management to medical devices.
Wireless Function Testing
The wireless coexistence test is conducted per the FDA Guidance Radio Frequency Wireless Technology in Medical Devices dated on August 14, 2013 to demonstrate no effect on the safe and effective use of the device.
Clinical data:
No animal or clinical testing was submitted in this 510(k).
9. Substantial Equivalence Conclusion:
Differences between the indications for use and technological characteristics of the subject device compared to the predicate do not raise different questions of safety and effectiveness. The performance of the device is supported by performance testing, and risk management activities. The Mintti smartho-D2 Electronic Stethoscope is Substantially Equivalent (SE) to the 3M "" Littmann® Electronic Stethoscope Model 3200 cleared by K083903.