(90 days)
Not Found
No
The device description and performance studies focus on mechanical and material properties, sterilization, and compliance with dental handpiece standards. There is no mention of software, algorithms, image processing, or any terms related to AI/ML.
Yes
The device is intended for medical purposes such as caries removal, cavity and crown preparation, removal of dental restorations, finishing and polishing of teeth and dental restorations, and prophylaxis treatment. These are all therapeutic applications within dentistry.
No
The device description indicates that the FX Contra handpieces are used for physical procedures such as caries removal, cavity and crown preparation, removal of dental restorations, finishing and polishing of teeth and dental restorations, and prophylaxis treatment. These are all active treatment procedures, not diagnostic ones.
No
The device description clearly states that the FX Contra handpieces are physical, reusable contra-angle handpieces made of stainless steel and aluminum, driven by a motor, and intended for physical dental procedures. It describes hardware components and physical testing.
Based on the provided information, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use clearly describes procedures performed directly on the patient's teeth and dental restorations (caries removal, cavity preparation, polishing, prophylaxis). This is a direct clinical intervention, not a test performed on a sample taken from the body.
- Device Description: The device is a handpiece used in dentistry, driven by a motor, for mechanical procedures. This aligns with a surgical or procedural device, not a diagnostic one.
- Lack of Diagnostic Function: There is no mention of the device being used to analyze samples (blood, tissue, etc.) or to provide information about a patient's health status based on such analysis.
- Performance Studies: The performance studies focus on sterilization, mechanical performance, cleaning validation, and biocompatibility – all relevant to a device used directly on a patient, not an IVD.
IVD devices are used to examine specimens derived from the human body (like blood, urine, tissue) to provide information for diagnosis, monitoring, or screening. This device does not fit that description.
N/A
Intended Use / Indications for Use
FX15 / FX15m / FX25 / FX25m FX Contra is intended for the following application(s): Caries removal, cavity and crown preparation, removal of dental restorations (fillings and prostheses), finishing and polishing of teeth and dental restorations.
FX57 / FX57m FX Contra is intended for the following application(s): Prophylaxis treatment of the surface of teeth and dental restorations.
Product codes (comma separated list FDA assigned to the subject device)
EGS
Device Description
The FX Contra includes six models: FX15, FX15m, FX25, FX25m, FX57, and FX57m. The FX Contra handpieces are reusable contra-angle handpieces, driven by an ISO 3964 compliant electronic micromotor or air motor, that are intended for use in a healthcare facility/hospital setting by a trained health care professional in the field of general dentistry. The FX Contra handpieces are designed for general applications to prepare dental cavities for restorations (FX15/FX15m/FX25/FX25m) and for prophylactic teeth cleaning (FX57/FX57m).
The FX Contra handpieces feature ISO 3964 compliant handpiece coupling connecting them to a dental unit through either a micromotor or an air motor. By these means the handpieces receive the energy for the gear for dental treatment. The maximum drive speed is 40,000 min-1 for FX15, FX15m, FX25, and FX25m; and 20,000 min-1 for FX57 and FX57m. The maximum rotation speed is 10,000 min-1 for FX15 and FX15m; 40,000 min-1 for FX25 and FX25m; and 5,000 min-1 for FX57 and FX57m.
The FX Contra handpieces are composed mainly of stainless steel and aluminum and can be sterilized in a steam sterilizer (autoclave).
The FX Contra handpieces are intended to be used with ISO 1797-1 compliant burs (FX15, FX15m, FX25 and FX25m) or ISO 13295compliant cups or brush (FX57 and FX 57m).
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
Teeth, dental restorations, dental cavities
Indicated Patient Age Range
Not Found
Intended User / Care Setting
Healthcare facility/hospital setting by a trained health care professional in the field of general dentistry. Dental health care professionals (e.g., dentists, periodontists).
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)
The FX Contra handpieces are developed and produced under considerations of all applicable technical standards, internal specifications, and FDA guidance documents. The product's conformance with applicable international and internal standards was verified in the course of bench testing.
Tests were performed on the subject device including verification/validation testing to internal functional specifications which demonstrated that the device is substantially equivalent. Specifically,
- Sterilization has been validated in conformance to the FDA recognized consensus standard AAMI/ANSI/ISO 17665-1:2006 "Sterilization of Health Care Products - Moist Heat - Part 1: Requirements for the Development, Validation, and Routine Control of a Sterilization Process for Medical Devices."
- Performance has been demonstrated in conformance to ISO 14457:2017 "Dentistry - Handpieces and Motors."
- Cleaning validation was provided demonstrating that the FX Contra handpieces complies with the FDA requirements stated in Guidance for the Reprocessing Medical Devices in Health Care Settings: Validation Methods and Labeling - Guidance for Industry and Food and Drug Administration Staff.
Biocompatibility evaluations were selected in accordance with AAMI/ANSI/ISO 10993-1: 2018 "Biological evaluation of medical devices - Part 1: Evaluation and testing" and FDA Guidance Use on International Standard ISO 10993, "Biological evaluation of medical devices – Part 1: Evaluation and Testing " and included:
- Cytotoxicity per ISO10993-5
- Sensitization per ISO10993-10
- Irritation per ISO10993-10
- Acute Systemic Toxicity per ISO 10993-11
- Pyrogenicity per ISO 10993-11
Clinical testing was not required as non-clinical testing is believed to be sufficient for a determination of substantial equivalence of the FX Contra handpieces.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
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.
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
§ 872.4200 Dental handpiece and accessories.
(a)
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.(b)
Classification. Class I.
0
Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the FDA logo is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
November 17, 2022
Nakanishi Inc. % Yulia Nikova Regulatory Affairs Manager Ken Block Consulting LLC 800 E Campbell Road, Suite 202 Richardson. Texas 75081
Re: K222518
Trade/Device Name: FX Contra Regulation Number: 21 CFR 872.4200 Regulation Name: Dental Handpiece and Accessories Regulatory Class: Class I, reserved Product Code: EGS Dated: August 19, 2022 Received: August 19, 2022
Dear Yulia Nikova:
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.
1
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 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 (QS) 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 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 (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
Michael E. Adjodha -S
Michael E. Adjodha, M.ChE. Assistant Director DHT1B: Division of Dental and ENT Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
2
Indications for Use
510(k) Number (if known) K222518
Device Name FX Contra
Indications for Use (Describe)
FX15 / FX15m / FX25 / FX25m FX Contra is intended for the following application(s): Caries removal, cavity and crown preparation, removal of dental restorations (fillings and prostheses), finishing and polishing of teeth and dental restorations.
FX57 / FX57m
FX Contra is intended for the following application(s): Prophylaxis treatment of the surface of teeth and dental restorations.
Type of Use (Select one or both, as applicable)X 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
| Submitter: | NAKANISHI INC.
700 Shimohinata
Kanuma Tochigi 322-8666 Japan |
|---------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | NAKANISHI INC.
Mr. Masaaki Kikuchi
General Manager, Quality/Regulatory Affairs Dept.
700 Shimohinata
Kanuma Tochigi 322-8666 Japan
TEL: +81-289-64-7277
FAX: +81-289-62-9738
m-kikuchi@nsk-nakanishi.co.jp |
| Date Prepared: | November 16, 2022 |
| Submission Type: | Traditional 510(k) |
| Subject Device: | Manufacturer: NAKANISHI INC.
Trade/Device Name: FX Contra
Common Name: Handpiece, contra- and right-angle attachment, dental
Regulation Number: 21 CFR 872.4200
Regulation Name: Dental Handpiece and Accessories
Regulatory Class: Class I
Product Code: EGS |
| Predicate Device: | Clearance: K132356 dated January 31, 2014
Manufacturer: SciCan GmbH
Trade/Device Name: SANAO Dental Handpieces
Common Name: Handpiece, contra- and right-angle attachment, dental
Regulation Number: 21 CFR 872.4200
Regulation Name: Dental Handpiece and Accessories
Regulatory Class: Class I
Product Code: EGS |
| Device Description: | The FX Contra includes six models: FX15, FX15m, FX25, FX25m, FX57, and FX57m. The FX Contra handpieces are reusable contra-angle handpieces, driven by an ISO 3964 compliant electronic micromotor or air motor, that are intended for use in a healthcare facility/hospital setting by a trained health care professional in the field of general dentistry. The FX Contra handpieces are designed for general applications to prepare dental cavities for restorations (FX15/FX15m/FX25/FX25m) and for prophylactic teeth cleaning (FX57/FX57m).
The FX Contra handpieces feature ISO 3964 compliant handpiece coupling connecting them to a dental unit through either a micromotor or an air motor. By these means the handpieces receive the energy for the gear for dental treatment. The maximum drive speed is 40,000 min-1 for FX15, FX15m, FX25, and FX25m; and 20,000 min-1 for FX57 and FX57m. The maximum rotation speed is 10,000 min-1 for FX15 and FX15m; 40,000 min-1 for FX25 and FX25m; and 5,000 min-1 for FX57 and FX57m.
The FX Contra handpieces are composed mainly of stainless steel and aluminum and can be sterilized in a steam sterilizer (autoclave). |
NAKANISHI INC.
4
Image /page/4/Picture/0 description: The image features the logo of NSK, a company specializing in motion and control technologies. The logo consists of the letters 'NSK' in a bold, sans-serif font, with a stylized line extending from the top of the 'N' over the 'S' and 'K'. The logo is set against a dark blue background, providing a strong contrast that makes the logo easily visible.
| 510(k) Summary | K222518
The FX Contra handpieces are intended to be used with ISO 1797-1 compliant burs
(FX15, FX15m, FX25 and FX25m) or ISO 13295compliant cups or brush (FX57 and
FX 57m). | | | | |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|-------------------------|--|--|
| Principle of
Operation /
Mechanism of
Action: | The principle of operation of the FX Contra handpieces is based on rotatory
movement. The contra-angle FX Contra handpieces are driven by energy of
electronic micromotor or an air motor, which is converted into mechanical energy
through the motor. This mechanical energy is transferred to the drivetrains in the
contra-angle handpiece in the form of a rotary movement via an ISO 3964 compliant
coupling. The force is transmitted through shafts and gear components to another
coupling interface located in the head housing, which is designed for safe insertion
and removal of ISO 1797 or ISO 13295 compliant tools. The mechanical energy is
passed on to the cutting or polishing part of these tools and thus to the procedure site. | | | | |
| Statement of
Intended Use: | FX15 / FX15m / FX25 / FX25m
FX Contra is intended for the following application(s):
Caries removal, cavity and crown preparation, removal of dental restorations (fillings
and prostheses), finishing and polishing of teeth and dental restorations. | | | | |
| | FX57 / FX57m
FX Contra is intended for the following application(s):
Prophylaxis treatment of the surface of teeth and dental restorations. | | | | |
| Summary of
Technological
Characteristics: | The intended use, technological characteristics, and functionality are substantially
equivalent between the subject FX Contra handpieces and the predicate device. The
performance characteristics are also equivalent to the predicate device. Both devices
are intended to be used by dental health care professionals (e.g., dentists,
periodontists). Both devices are intended for multiple patients use and sterilized by
autoclave sterilization. Additionally, the FX Contra handpieces and the predicate
device have the same technological characteristics: | | | | |
| Power source
● | | | | | |
| | Principle of operation
● | | | | |
| | Push-button auto-chuck
● | | | | |
| As presented in the brief comparison table below, several differences with respect to
technological characteristics were identified between the subject device and the
predicate, including but not limited to the transmission gear ratios, compatible burs,
and material composition. Performance testing was conducted to support substantial
equivalence and demonstrate that these differences do not raise different questions of
safety and effectiveness. | | | | | |
| A brief summary of the technological characteristics in comparison to those of the
predicate device is as follows: | | | | | |
| | | Subject Device: | Predicate Device: | | |
| | Trade/Device Name | FX Contra | SANAO Dental Handpieces | | |
| | 510(k) Submitter | NAKANISHI INC. | SciCan GmbH | | |
| | [Number] | K222518 | K132356 | | |
| | Device Class | Class I | Class I | | |
| | Product Code | EGS | EGS | | |
5
510(k) Summary
| Regulation | 21 CFR 872.4200 | K222518
21 CFR 872.4200 |
|------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indications for Use | FX15 / FX15m / FX25 /
FX25m
FX Contra is intended for
the following application(s):
Caries removal, cavity and
crown preparation, removal
of dental restorations
(fillings and prostheses),
finishing and polishing of
teeth and dental
restorations. | This medical device is only
intended for dental
treatment in the area of
dentistry. It is intended to be
used for the following
applications:
- SANAO 200 L / 40 ST:
The removal of decayed
matter, cavity and crown
preparations, the removal of
fillings and surface
finishing of tooth and
restoration surfaces. |
| | FX57 / FX57m
FX Contra is intended for
the following application(s):
Prophylaxis treatment of the
surface of teeth and dental
restorations. | - SANAO 40 / 40 L / 10 /
10 L Cavity preparations,
caries excavation,
endodontics, surface
finishing of tooth and
restoration surfaces. - SANAO PSI / PSO:
prophylaxis treatment. |
| Application | General dentistry and
prophylaxis | General dentistry and
prophylaxis |
| Model Numbers | General Application
FX15 / FX15m / FX25 /
FX25m | General Application
SANAO 10 / SANAO 10 L
/ SANAO 40 / SANAO 40
L / SANAO 200L / SANAO
40 ST |
| | Prophylaxis
FX57 / FX57m | Prophylaxis
SANAO PSI / SANAO PSO |
| Power Source | Electronic Micromotor or
Air Motor | Electronic Micromotor or
Air Motor |
| Handpiece Chuck
Mechanism | Push Button
FX15 / FX15m / FX25 /
FX25m | Push Button
SANAO 10 / SANAO 10 L
/ SANAO 40 / SANAO 40
L / SANAO 200 L |
| | Not Applicable
FX57 / FX57m | Not Applicable
SANAO PSI / SANAO PSO
Mechanical
SANAO 40 ST |
| Burs / Cup or Brush | ISO 1797 Type 1 (2.334 -
2.35mm) | ISO 1797 Type 1 (2.35mm) |
| | | K222518 |
| | FX15 / FX15m / FX25 /
FX25m | SANAO 10 / SANAO 10 L
/ SANAO 40 / SANAO 40
L |
| | | ISO 1797 Type 2 (2.35mm) |
| | | SANAO 40 ST |
| | | ISO 1797 Type 3 (1.60mm) |
| | | SANAO 200 L |
| | | ISO 13295 Type 3
SANAO PSI |
| | ISO 13295 Type 5
FX57 / FX57m | ISO 13295 Type 5
SANAO PSO |
| | | |
| Transmission Ratio | 1:1
FX25 / FX25m | 1:1
SANAO 40 / SANAO 40 L
/ SANAO 40 ST |
| | 4:1
FX15 / FX15m / FX57 /
FX57m | 5:1
SANAO 10 / SANAO 10 L
/ SANAO PSI / SANAO
PSO |
| | | |
| | | 1:5
SANAO 200 L |
| | | |
| Materials | Stainless Steel
Aluminum | Stainless Steel
PEEK |
NAKANISHI INC.
6
Image /page/6/Picture/0 description: The image features the logo for NSK, a company specializing in motion and control technologies. The logo consists of the letters "NSK" in a bold, sans-serif typeface, rendered in white. The background is a solid, dark blue color, providing a strong contrast that makes the logo stand out.
510(k) Summary
Summary of Non-Clinical Performance Testing:
The FX Contra handpieces are developed and produced under considerations of all applicable technical standards, internal specifications, and FDA guidance documents. The product's conformance with applicable international and internal standards was verified in the course of bench testing.
Tests were performed on the subject device including verification/validation testing to internal functional specifications which demonstrated that the device is substantially equivalent. Specifically,
- -Sterilization has been validated in conformance to the FDA recognized consensus standard AAMI/ANSI/ISO 17665-1:2006 "Sterilization of Health Care Products - Moist Heat - Part 1: Requirements for the Development, Validation, and Routine Control of a Sterilization Process for Medical Devices."
- -Performance has been demonstrated in conformance to ISO 14457:2017 "Dentistry - Handpieces and Motors."
- Cleaning validation was provided demonstrating that the FX Contra handpieces complies with the FDA requirements stated in Guidance for the Reprocessing Medical Devices in Health Care Settings: Validation Methods and Labeling -Guidance for Industry and Food and Drug Administration Staff.
Biocompatibility Biocompatibility evaluations were selected in accordance with AAMI/ANSI/ISO Testing: 10993-1: 2018 "Biological evaluation of medical devices - Part 1: Evaluation and
NAKANISHI
7
Image /page/7/Picture/0 description: The image shows the logo for NSK, a Japanese manufacturer of bearings. The logo is white and is set against a blue background. The letters "NSK" are in a bold, sans-serif font, with a stylized line above the letters.