Electric Handpiece Motor

K181858 · W&H Dentalwerk Buermoos GmbH · EBW · Mar 26, 2019 · Dental

Device Facts

• Record ID: K181858
• Device Name: Electric Handpiece Motor
• Applicant: W&H Dentalwerk Buermoos GmbH
• Product Code: EBW · Dental
• Decision Date: Mar 26, 2019
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 872.4200
• Device Class: Class 1
• Attributes: Therapeutic

Intended Use

Electric Handpiece Motor EM-12 L is a brushless DC electric micromotor controlled by a control unit. The electrical drive, EM-12 L is indicated for use in the field of preventive applications including cavity preparation and endodontic therapy, prosthodontics applications such as crown preparations.

Device Story

Brushless DC electric micromotor; integrated into dental operatory chair systems. Receives 24 VAC power from chair supply; controlled via CAN-bus interface from dental unit controller board. Provides adjustable speed (100–40,000 rpm) and near-constant torque for dental handpiece attachments. Used by dental professionals in clinics for restorative and endodontic procedures. Output is mechanical rotation of handpiece attachments; allows precise control for cavity/crown preparation. Benefits include consistent torque and speed control for improved procedural accuracy.

Clinical Evidence

No clinical data. Bench testing only, including electrical safety (IEC 60601-1), EMC (IEC 60601-1-1), functional/life cycle testing (ISO 14457), reprocessing validation, software validation (IEC 62304), thermal safety (IEC 62471), and biocompatibility (ISO 10993).

Technological Characteristics

Brushless DC micromotor; flame-rated plastic housing; ISO 9168 supply connection; ISO-E-coupler. Power: 100–240 V AC. Connectivity: CAN-bus. Sterilization: Reprocessing validated per FDA guidance. Software: Moderate level of concern.

Indications for Use

Indicated for use in preventive dentistry, restorative applications (cavity preparation, endodontic therapy), and prosthodontics (crown preparations).

Regulatory Classification

Identification

A dental handpiece and accessories is an AC-powered, water-powered, air-powered, or belt-driven, hand-held device that may include a foot controller for regulation of speed and direction of rotation or a contra-angle attachment for difficult to reach areas intended to prepare dental cavities for restorations, such as fillings, and for cleaning teeth.

Predicate Devices

• Electric Handpiece Motor, A-dec/W&H (K133776)

Submission Summary (Full Text)

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March 26, 2019

W&H Dentalwerk Buermoos GmbH Anja Lindner Regulatory Affairs Specialist Ignaz-Glaser-Straße 53 Burmoos, Salzburg 5111 AUSTRIA

Re: K181858

Trade/Device Name: Electric Handpiece Motor EM-12 L Regulation Number: 21 CFR 872.4200 Regulation Name: Dental Handpiece and Accessories Regulatory Class: Class I Product Code: EBW Dated: December 21, 2018 Received: December 26, 2018

Dear Anja Lindner:

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 mav, 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 avare 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

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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 devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); 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 http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). 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 (http://www.fda.gov/DICE) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely.

Mary S. Runner -S3 P.

> For Tina Kiang, Ph.D. Acting Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control, and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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## Indications for Use

510(k) Number (if known) K181858

Device Name Electric Handpiece Motor EM-12 L

#### Indications for Use (Describe)

Electric Handpiece Motor EM-12 L is a brushless DC electric micromotor controlled by a control unit. The electrical drive, EM-12 L is indicated for use in the field of preventive applications including cavity preparation and endodontic therapy, prosthodontics applications such as crown preparations.

| Type of Use (Select one or both, as applicable) | |
|------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|
| <span style="font-size:16px">☒</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="font-size:16px">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |

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Image /page/3/Picture/0 description: The image shows a logo with the letters "W&H" inside a gray, horizontally-oriented octagon. Above the logo is a green banner with the text "PEOPLE HAVE PRIORITY" in white letters. The logo and banner are centered in the image.

# 200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 K181858

| Submitter | W & H DENTALWERK BÜRMOOS GMBH<br>Ignaz-Glaser-Strasse 53<br>A - 5111 Bürmoos<br>Austria<br>Tel.: [phone]<br>Fax: [phone] / 6236 -55 |
|---------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Registration Number | 9681479 |
| Contact Person | Mag. Anja LINDNER |
| Date of Preparation | March 25, 2019 |
| Device Name | Electric Handpiece Motor EM-12L |
| Classification Name | Dental Handpiece and Accessories |
| Regulation Number | 21 CFR 872.4200 |
| Regulatory class | I |
| Product Code | EBW |
| Predicate Devices | Predicate device for the electric motor EM-12 L:<br>"Electric Handpiece Motor", A-dec/W&H cleared under<br>K133776 |
| Device Description | The W&H electric motor EM-12 L is designed to<br>accommodate existing and new handpiece attachments<br>(already cleared for market under K070663 and K162926)<br>for the purpose of performing dental procedures as<br>described above. The advantage to driving a handpiece<br>with this electro motor is the adjustable speed and near-<br>constant torque applied by the electric brushless micro<br>motor.<br>The system will be used in an integrated configuration on the<br>dental operatory chair system. The motor controller is<br>contained within the control head (Dental unit) and acquires<br>+24 VAC from the chair system 300 W power supply<br>secondary voltage output. The motor tubing extends from<br>the motor controller inside the control head to the micro-<br>motor with ISO-E-coupler suitable to a handpiece<br>attachment for the intended dental procedure.<br>The Electric Handpiece Motor is to be installed in A-dec<br>dental operative units.<br>The power/CAN-Bus will be provided by the dental unit<br>controller board and connected to the controller. |

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| Electric Handpiece Motor EM-12 L<br>510(k) Summary | | | Item | New device | Predicate device | Judgement | | |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------|---------------------------|----------------------------------|-----------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| The dental unit controller board, display, foot control and active handpiece switch are part of the system manufacturer dental unit and not a W&H part.<br><br>The motor will be directly connected to the motor controller by the system manufacturer (not W&H).<br><br>The system manufacturer gets an installation manual for the motor controller and the motor. | | | Name | W&H Electric Motor EM-12L | A-Dec Electric Motor EA-53 | --- | | |
| Indications for Use: | Electric Handpiece Motor EM-12 L is a brushless DC electric micromotor controlled by a control unit.<br>The electrical drive, EM-12 L is indicated for use in the field of preventive dentistry, restorative applications including cavity preparation and endodontic therapy, prosthodontics applications such as crown preparations. | | Photo | Image: W&H Electric Motor EM-12L | Image: A-Dec Electric Motor EA-53 | --- | | |
| Technological<br>Characteristics | Item | New device<br>EM-12 L | Predicate device<br>EA-53 | Judgment | Where used | Dental practice, dental clinic. | Dental practice, dental clinic. | same |
| | Power<br>supply | 100 – 240 V AC | 100 – 240 V AC | Same | Manufacturer | W&H Dentalwerk Bürmoos GmbH<br>www.wh.com | A-dec | --- |
| | Speed<br>range | 100 to 40,000 rpm | 100 to 40,000 rpm | Same | 510(k) | Submitted K181858 | K133776<br>submitted A-dec, Inc. | --- |
| | Supply<br>connection | ISO 9168 | ISO 9168 | Same | Indication for Use | Electric Handpiece Motor EM-12 L is a device system comprised of a control unit that drives a DC electric micromotor. The electrical drive, EM-12L is indicated for use in the field of preventive dentistry, restorative applications including cavity preparation and endodontic therapy, prosthodontics applications such as crown preparations. | The A-dec/W&H Electric Motor Kit is intended for use in general dental applications such as: cutting a tooth for cavity preparation, crown preparation, crown finishing, inlay, filing, polishing, prophylaxis and endodontic treatment with use of a straight, right-angle, or contra-angle ISO E-type handpiece attachment of equal speed, gear-reduction speed, or gear-increasing speed. | Similar |
| | Air<br>pressure | 3 ± 0.3 bar | 3 ± 0.3 bar | Same | Enclosure | New Device<br>MC-1.0 / MC-2.0 E<br>Maximum Size | Predicate Device<br>CM-1.1 / CM-2.1<br>Maximum Size | Same |
| | Water<br>pressure | 0.5 to 3 bar | 0.5 to 3 bar | Same | Length | 142 mm | 138 mm | Similar |
| | Chip Air<br>pressure | 0.5 to 3 bar | 0.5 to 3 bar | Same | Width | 60 mm | 60 mm | Same |
| | Motor<br>torque | 3 Ncm | 3 Ncm | Same | Height | 43 mm | 43 mm | Same |
| | Light | yes | yes | Same | Material | Flame-rated plastic | same | Same |
| The technical principle is the same as within the predicate device.<br><br>The main differences between the subject and the predicate device are the different labeling especially the name designation and the reciproc®/wave one® function, which do not raise any additional question regarding substantial | | | | | Installation | By qualified and authorized personnel | same | Same |
| Digital Interface | | | | | | | | |
| Protocol | CAN | CAN | Same | | | | | |

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| PEOPLE HAVE PRIORITY |
|----------------------|
| Image: W&H logo |

| | material are the same or, at least, quite similar to those of the<br>predicate device. |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Non-clinical testing | Electrical Safety Tests according to IEC 60601-<br>1:2005+A1:2012 (3.1 Edition), Medical electrical equipment<br>– Part 1: General requirements for basic safety and<br>essential performance. |
| | Electromagnetic Compatibility Test according to IEC 60601-<br>1-1:2007: General requirement for basic safety and essential<br>performance - Collateral standard: Electromagnetic<br>compatibility – Requirements and tests |
| | Product testing of the Electric Handpiece Motor's function and<br>life cycle testing were performed according to ISO<br>14457:2012: Dentistry – Handpieces and Motors.<br>Motor cooling air, spray air supply and water supply was tested<br>according to ISO 14457:2012<br>Various temperature testing was also performed according to<br>ISO 14457:2012 |
| | Reprocessing validation per the FDA Guidance for<br>Reprocessing of Medical Devices in Health Care Setting<br>issued on March 17, 2015 |
| | Software Documentation of Moderate Level of Concern per<br>the FDA Guidance Document for Software Contained in<br>Medical Devices issued on May 11, 2005 |
| | Software validation according to IEC 62304:2006: Medical<br>device software – Part 1: Guidance on the application of ISO<br>14972 to medical device software |
| | Thermal safety according to the standard IEC 62471:2006:<br>Photobiological safety of lamps and lamp systems |
| | Evaluation of biocompatibility is based on ISO 10993. The<br>evaluation meets the requirements. |

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| Electric Handpiece Motor EM-12 L<br>510(k) Summary | |
|----------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Clinical Testing | Clinical performance testing was not conducted. |
| Conclusion | W&H considers the Electric Handpiece Motor EM-12 L to be<br>substantially equivalent to the predicate device listed above. This<br>conclusion is based on the similarities in intended use, principles of<br>operation, functional design, and establishment medical use.<br>Differences between the devices shown in the comparison section<br>above are minor and do not have any negative effect on equivalence. |