Keikku Electronic stethoscope

K233313 · Lapsi Health Holding B.V. · DQD · Apr 10, 2024 · Cardiovascular

Device Facts

• Record ID: K233313
• Device Name: Keikku Electronic stethoscope
• Applicant: Lapsi Health Holding B.V.
• Product Code: DQD · Cardiovascular
• Decision Date: Apr 10, 2024
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 870.1875
• Device Class: Class 2
• Attributes: Pediatric

Intended Use

The Keikku is an electronic stethoscope that enables amplification, filtering, and transmission of auscultation data of the patient (heart, lungs, bowel, arteries, and veins), whereby a clinician at one location on a network can listen to the auscultation data of a patient on site or at a different location on the network. The Keikku is intended for use on pediatric and adult patients. The Keikku is intended to be used by professional users in a clinical environment or by lay users in a nonclinical environment. The device is not intended for self-diagnosis.

Device Story

Keikku is a digital stethoscope for auscultation of heart, lungs, bowel, arteries, and veins. System comprises a hardware stethoscope and mobile application. Hardware captures body sounds via MEMS microphone, converts to digital data, and transmits via Bluetooth to mobile device. App provides visualization, annotation, secure storage, playback, and sharing. Used by healthcare professionals in clinical settings or lay users in non-clinical environments under provider supervision. Enables remote monitoring, second opinions, and telemedicine. Healthcare providers review audio/visual output to assist in clinical assessment. Benefits include enhanced sound amplification (up to 42dB) and remote access to auscultation data.

Clinical Evidence

Bench testing only. Performance testing compared Keikku to Eko CORE and 3M Littmann 3200, verifying audio frequency and noise-to-signal ratio response met predefined acceptance criteria. Biocompatibility evaluated per ISO 10993-1. Electrical safety (IEC 60601-1), EMC (IEC 60601-1-2), and usability (IEC 60601-1-6) testing passed. Software verification and validation conducted per FDA guidance.

Technological Characteristics

Electronic stethoscope using MEMS microphone sensor. Digital signal processing with up to 42dB amplification. Frequency response 50-800Hz. Connectivity via Bluetooth 5 LE to iOS/Android mobile app. Rechargeable battery power. IP44 rating. Diaphragm material: silicon rubber. Software-based visualization and annotation.

Indications for Use

Indicated for pediatric and adult patients for amplification, filtering, and transmission of auscultation data (heart, lungs, bowel, arteries, veins). Used by clinicians in clinical settings or lay users in non-clinical settings under provider supervision. Not for self-diagnosis.

Regulatory Classification

Identification

Manual stethoscope: A mechanical device used to project the sounds associated with the heart, arteries, and veins and other internal organs. Electronic stethoscope: An electrically amplified device used to project the sounds associated with the heart, arteries, and veins and other internal organs.

Special Controls

*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.

Predicate Devices

• Eko CORE (K200776)

Reference Devices

• 3M LITTMANN ELECTRONIC STETHOSCOPE, MODEL 3200 (K083903)

Submission Summary (Full Text)

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April 10, 2024

Lapsi Health Holding B.V % Orly Maor Consultant 25 Sirkin Street Kfar Saba, 4442157 Israel

Re: K233313

Trade/Device Name: Keikku Electronic stethoscope Regulation Number: 21 CFR 870.1875 Regulation Name: Stethoscope Regulatory Class: Class II Product Code: DQD Dated: September 29, 2023 Received: September 29, 2023

Dear Orly Maor:

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 (the 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 available 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.

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Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).

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 Part 803) for devices or postmarketing safety reporting (21 CFR Part 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 (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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 mediation-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 ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely,

Robert T. Kazmierski -S

for

LCDR Stephen Browning Assistant Director Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices

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Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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## Indications for Use Statement

DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use

Form Approved: OMB No. 0910-0120 Expiration Date: 06/30/2023 See PRA Statement below.

510(k) Number (if known)

## K233313

Device Name

Keikku Electronic Stethoscope Indications for Use (Describe)

The Keikku is an electronic stethoscope that enables amplification, filtering, and transmission of auscultation data of the patient (heart, lungs, bowel, arteries, and veins), whereby a clinician at one location on a network can listen to the auscultation data of a patient on site or at a different location on the network. The Keikku is intended for use on pediatric and adult patients. The Keikku is intended to be used by professional users in a clinical environment or by lay users in a nonclinical environment. The device is not intended for self-diagnosis.

| Type of Use (Select one or both, as applicable) |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| <span> Prescription Use (Part 21 CFR 801 Subpart D) </span> <span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> |

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# Traditional Premarket Notification Submission - 510(k) Keikku Electronic Stethoscope 510(k) Number K233313

## Date Prepared: April 5, 2024

### I. SUBMITTER

Lapsi Health Holding B.V. Laarderhoogtweg 25, Amsterdam The Netherlands www.lapsihealth.com

## Regulatory Correspondent:

Katja Koskinen, Regulatory Officer Lapsi Health Holding B.V. Laarderhoogtweg 25, Amsterdam -The Netherlands [e-mail]

## DEVICE II.

Name of Device: Keikku Electronic Stethoscope Common or Usual Name: Keikku Electronic Stethoscope Classification Name: 21 CFR 870.1875; Stethoscope, Electronic Regulatory Class: II Product Code: DQD.

## III. PREDICATE DEVICE

Lapsi Health Holding B.V. believes that the Keikku Electronic Stethoscope is substantially equivalent to the following predicate device:

- Eko CORE manufactured by Eko Devices, Inc. cleared under K200776, Classification name Electronic stethoscope, Product code: DQD, Regulation: 21 CFR 870.1875
The following device is used as a reference device:

- 3M LITTMANN ELECTRONIC STETHOSCOPE, MODEL 3200 manufactured by Eko ● Devices, Inc. cleared under K083903, Classification name Electronic stethoscope, Product code: DQD, Regulation: 21 CFR 870.1875
### DEVICE DESCRIPTION IV.

The Keikku (Rx) is a digital stethoscope device designed for use by health care professionals in clinical settings and by lay users in non-clinical environments under healthcare provider supervision. The Keikku electronically amplifies, filters and transfers body sounds through the accompanying mobile application and is used for storage, sharing and transmitting the data for

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telemedicine use. It also enables lay users, under supervision from a healthcare provider, to listen to their body sounds (lungs, heart, arteries, veins, gastrointestinal tract, etc.), record and share it with their physicians during telehealth sessions.

The Keikku consists of two primary components:

- 1. The Keikku device is an electronic stethoscope. The Keikku device is used for recording audio, converting it to digital data, and transmitting the data to a mobile device via Bluetooth®. It includes volume adjustment via rotation, tap feature for starting and ending the recording, and an LED light indicator for indicating the status of the device.
- 2. The Keikku App. The app captures audio data from the Keikku device and provides data visualization and annotation, secure data storage, audio playback, and sharing features. These features enable a healthcare professional to monitor patients, seek second opinions from a specialist or use the device for telemedicine use.

## INDICATIONS FOR USE V.

The Keikku is an electronic stethoscope that enables amplification, filtering, and transmission of auscultation data of the patient (heart, lungs, bowel, arteries, and veins), whereby a clinician at one location on a network can listen to the auscultation data of a patient on site or at a different location on the network. The Keikku is intended for use on pediatric and adult patients. The Keikku is intended to be used by professional users in a clinical environment or by lay users in a nonclinical environment. The device is not intended for self-diagnosis.

#### OF TECHNOLOGICAL CHARACTERISTICS VI. COMPARISON WITH THE PREDICATE DEVICE

The Keikku Electronic Stethoscope has the same intended use as the predicate device. Its indications for use are identical to that of the predicate device.

The Keikku Electronic Stethoscope has similar technological characteristics as the predicate device as demonstrated in the table below:

| Specification/<br>Feature | Keikku electronic<br>stethoscope<br>K | Eko CORE<br>K200776 | Littmann 3200<br>K083903 | Comparison |
|---------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------|
| Regulation number and<br>Product Code | DQD , 870.1875 | DQD , 870.1875 | DQD, 870.1875 | Same |
| Intended use | Electronic<br>Stethoscope | Electronic<br>Stethoscope | Electronic<br>Stethoscope | Same |
| Indications for<br>use | The Keikku is an<br>electronic<br>stethoscope that<br>enables<br>amplification,<br>filtering, and<br>transmission of<br>auscultation data of<br>the patient (heart,<br>lungs, bowel, | The Eko CORE is<br>an electronic<br>stethoscope that<br>enables<br>amplification,<br>filtering, and<br>transmission of<br>auscultation sound<br>data (heart, lungs,<br>bowel, arteries, and | The 3MTM<br>Littmann®<br>Electronic<br>Stethoscope Model<br>3200 is intended for<br>medical diagnostic<br>purposes only. It<br>may be used for the<br>detection and<br>amplification of | Same as EKO<br>core |
| Specification/<br>Feature | Keikku electronic<br>stethoscope<br>K | Eko CORE<br>K200776 | Littmann 3200<br>K083903 | Comparison |
| | arteries, and veins),<br>whereby a clinician<br>at one location on<br>network can listen to<br>the auscultation data<br>of a patient on site<br>or at a different<br>location on the<br>network. The<br>Keikku is intended<br>for use on pediatric<br>and adult patients.<br>The Keikku is<br>intended to be used<br>by professional<br>users in a clinical<br>environment or by<br>lay users in a<br>nonclinical<br>environment. The<br>device is not<br>intended for self-<br>diagnosis. | veins), whereby a<br>clinician at one<br>location on network<br>can listen to the<br>auscultation sounds<br>of a patient on site<br>or at a different<br>location on the<br>network. Eko<br>CORE is intended<br>for use on pediatric<br>and adult patients.<br>The Eko CORE is<br>intended to be used<br>by professional<br>users in a clinical<br>environment or by<br>lay users in a<br>nonclinical<br>environment. The<br>device is not<br>intended for self-<br>diagnosis. | sounds from the<br>heart, lungs,<br>arteries, veins, and<br>other internal<br>organs with the use<br>of selective<br>frequency ranges. It<br>can be used on any<br>person undergoing<br>a physical<br>assessment | |
| Intended patient<br>population | Adults and pediatric | Adults and<br>pediatric | Adults and<br>pediatric | Same |
| Prescribed | Rx | OTC | Rx | Same as the<br>reference |
| Chest-piece | Yes | Yes | Yes | Same |
| Sound<br>Processing | Digital signal<br>processing | Digital signal<br>processing | Digital signal<br>processing | Same |
| Amplification | Increases the<br>volume to reach a<br>constant value, up to<br>42dB | Increases the<br>volume up to 40x<br>amplification | Up to 28dB<br>acoustic gain,<br>equivalent to 24<br>times amplification | Same as the<br>predicate |
| Auscultation<br>position<br>guide | Yes, using the video<br>session | Yes, using the<br>Software<br>Application | NA | Similar |
| Signal<br>Transmission | Wireless Network,<br>Bluetooth | Wireless Network,<br>Bluetooth | NA | Same |
| Display | Smartphone (iOS or<br>Android) device | Smartphone (iOS<br>or Android) | liquid crystal<br>display (LCD) | Same as<br>predicate |
| Form Factor | Wireless headsets | Similar to<br>traditional<br>stethoscope +<br>optional wireless<br>headsets | Similar to<br>traditional<br>stethoscope | Same as<br>predicate |
| Specification/<br>Feature | Keikku electronic<br>stethoscope<br>K | Eko CORE<br>K200776 | Littmann 3200<br>K083903 | Comparison |
| Environment of<br>use | Professional users in<br>a clinical<br>environment or by<br>lay users in a<br>nonclinical<br>environment. | Professional users<br>in a clinical<br>environment or by<br>lay users in a<br>nonclinical<br>environment. | Professional users<br>in a clinical<br>environment | Same as<br>predicate |
| Application | Real time | Real time | Real time | Same |
| Bluetooth | 5 LE | 4.2 LE | Class 2 Bluetooth | Same |
| Diaphragm | Silicon rubber | Epoxy/Fiberglass | Polyurethane<br>coated silicon | Different<br>however has<br>no impact on<br>performance<br>as was<br>determined by<br>testing. |
| Pickup sensor | MEMS microphone | MEMS microphone | Unknown | Same as EKO<br>core |
| Frequency<br>Response | Extended: 50-800Hz | Bell: 20 - 200Hz.<br>Diaphragm: 100 -<br>500Hz<br>Extended: 50 -<br>500Hz | Bell: 20-200Hz<br>Diaphragm: 100-<br>500Hz Extended<br>range: 50-500 Hz. | Similar |
| Power Source | Rechargeable<br>battery | Rechargeable<br>battery | AA battery | Same as EKO<br>core |
| IP | IP44 | IP22 | IPX4 (chest piece<br>only) | Similar |
| Signal input<br>method | Sound waves<br>collected via a<br>digital microphone | Toggle between<br>analog and<br>amplified listening<br>modes | Sound waves<br>collected via a<br>transducer | Similar |
| Signal storage | Keikku app (iOS<br>and Android) | EKO software (iOS<br>and Android) | via Bluetooth link<br>to a PC | Same as EKO<br>core |

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# VII. PERFORMANCE DATA

The following performance data were provided in support of the substantial equivalence determination:

# Biocompatibility

Biocompatibility evaluation in compliance with ISO 10993-1 was evaluated.

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## -Cleaning and Disinfection Testing

Cleaning and disinfection validation were performed. All tests were successfully completed.

### Performance Testing -

Performance testing included comparison testing of the Keikku Electronic Stethoscope to its predicate and reference device. The main purpose of this test was to verify the Keikku's performance is similar to that of its predicate and reference devices, Eko Core and 3M Littmann electronic stethoscope, in terms of audio frequency and NSR response. The test passed and met the predefined acceptance criteria.

## Software Validation -

The Keiiku Electronic Stethoscope is categorized as Enhanced. Software verification and validation testing were conducted, and documentation was provided as recommended by FDA's Guidance for Industry and FDA Staff, "Content of Premarket Submissions for Device Software Functions".

## Electrical Safely and EMC -

Electrical Safety per IEC 60601-1, Electromagnetic compatibility (EMC) per IEC 60601-1-2 and usability per IEC 60601-1-6 were conducted on the Keikku Electronic Stethoscope. The tests passed.

### Usability Evaluation -

Usability study was conducted with passing results.

## VIII. CONCLUSION

The Keikku Electronic Stethoscope was determined to be substantially equivalent to the predicate and reference device.