The TAURUS C1 Dental System and accessories are intended for use in general dental applications by providing the dental practitioner a user interface to control operation of the dental chair and attached devices. The system delivers air, water, vacuum and electricity to allow the dental practitioner an intuitive control center for all common and normal patient treatment procedures performed in the dental operatory.
Device Story
Taurus C1 is a dental operatory system comprising a patient chair, dentist table, assistant table, water unit, arm system, cuspidor, and dental light. Used by dentists and dental assistants in clinical settings to facilitate patient diagnosis and treatment. The system acts as a central control hub, delivering air, water, vacuum, and electrical power to various dental instruments and accessories. The practitioner operates the system via a membrane panel or foot controller to adjust chair positioning, instrument function, and utility delivery. The device provides an ergonomic and intuitive interface for managing the dental environment, supporting standard clinical procedures, and improving workflow efficiency during patient care.
Clinical Evidence
Bench testing only. No clinical data provided. Testing included electrical safety (IEC 60601-1), electromagnetic compatibility (IEC 60601-1-2), and performance testing per ISO 7494-1 (dental units), ISO 7494-2 (water/air supply), and ISO 6875 (dental patient chairs). All tests passed.
Technological Characteristics
Class I dental operative unit. Features hydraulic chair operating system, 3-axis light adjustment, and membrane control panels. Power supply 100-230V, 50/60Hz. Safety standards: EN 60601-1, IEC 61000-3-2/3. Dental standards: ISO 7494-1, ISO 7494-2, ISO 6875. Materials are biocompatible and consistent with predicate device components. Connectivity is limited to integrated dental instrument power/utility delivery.
Indications for Use
Indicated for use in general dental applications for patients undergoing common and normal dental treatment procedures in a dental operatory.
Regulatory Classification
Identification
A dental operative unit and accessories is an AC-powered device that is intended to supply power to and serve as a base for other dental devices, such as a dental handpiece, a dental operating light, an air or water syringe unit, and oral cavity evacuator, a suction operative unit, and other dental devices and accessories. The device may be attached to a dental chair.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular border with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an emblem featuring a stylized representation of three human profiles facing to the right, resembling a bird-like shape.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 22, 2016
Shinhung Company, Ltd. c/o Mr. Dave Kim Medical Device Regulatory Affairs Mtech Group 8310 Buffalo Speedway Houston, Texas 77025
Re: K151996
Trade/Device Name: Taurus C1 Regulation Number: 21 CFR 872.6640 Regulation Name: Operative Dental Unit and Accessories Regulatory Class: I Product Code: EIA Dated: December 9, 2015 Received: December 15, 2015
### Dear Mr. Kim:
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. 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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Page 2 - Mr. Dave Kim
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 (reporting of medical device-related adverse events) (21 CFR 803); 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR 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 the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely vours.
Tina Kiang -
for Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
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# Indications for Use
510(k) Number (if known) K151996
Device Name
TAURUS C1
Indications for Use (Describe)
The TAURUS C1 Dental System and accessories are intended for use in general dental applications by providing the dental practitioner a user interface to control operation of the dental dental devices. The system delivers air, water, vacuum and electricity to allow the dental practitioner an intuitive control center for all common and normal patient treatment procedures performed in the dental operatory.
Type of Use (Select one or both, as applicable)
| <div> <span> <span style="font-size:16px;"></span> Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> |
|-------------------------------------------------------------------------------------------------------------------------|
| <div> <span> <span style="font-size:16px;"></span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
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# Traditional 510(k) Summary
This 510(k) summary is being submitted in accordance with requirements of 21 CFR Part 807.92.
Date 510k summary prepared: December 10, 2015
#### I. SUBMITTER
| Submitter's Name : | Shinhung Co., Ltd. |
|----------------------------------------------------|-----------------------------------------------------------------------------------|
| Submitter's HQ Address: | Shinhung Bldg, 450, Cheongpa-ro, Jung-gu,<br>Seoul, 100-858, Korea |
| Factory Address: | 42-25, 27beon-gil, Dongsan-ro, Danwon-gu,<br>Ansan-si, Gyeonggi-Do, 425-852 Korea |
| Submitter's Telephone: | +82(2)6366-2124 |
| Contact person: | Sky Shin( sky@shinhung.co.kr) / Manager |
| Official Correspondent:<br>(U.S. Designated agent) | Dave Kim (davekim@mtech-inc.net) |
| Address: | 8310 Buffalo Speedway, Houston, TX 77025 |
| Telephone: | +713-467-2607 |
| Fax: | +713-583-8988 |
II. DEVICE
| Trade/proprietary name | : | TAURUS C1 |
|------------------------|---|---------------------------------------|
| Common or Usual Name | : | Dental Chair and Units |
| Regulation Name | : | Dental Operative Unit and Accessories |
| Regulation Number | : | 21 CFR 872.6640 (Product Code: EIA) |
| Regulatory Class | : | I Class |
| Prescription Use. | | |
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#### III. PREDICATE DEVICE
| Primary Manufacturer | : | A-DEC, INC |
|----------------------|---|-----------------------------------------|
| Device Name | : | A-DEC 200 DENTAL SYSTEM |
| 510(k) Number | : | K102234 (Decision Date – Jan. 13, 2012) |
| Regulation Name | : | Dental Operative Unit and Accessories |
| Regulation Number | : | 21 CFR 872.6640 (Product Code: EIA) |
| Regulatory Class | : | I Class |
Prescription Use
This predicate has not been subject to a design-related recall.
No reference devices were used in this submission.
#### DEVICE DESCRIPTION IV.
TAURAUS C1 is a dental chair and units to be used to take for diagnosis and therapy of patients. It consists of the main unit and accessories.
The dental chair is used for patient to sit during the dental diagnosis, treatment and /or operation. The dental unit consists of patient chair, dentist table with instrument holders, assistant table, water unit, arm system, cuspidor (spittoon) and dental light. The dental unit system is used by trained dentists and /or dental assistants to supply air, water, vacuum and electrical power to dental devices and accessories to allow the dental practitioner an intuitive control center for all common and normal patient treatment procedures performed in the dental operatory.
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#### INDICATIONS FOR USE: V.
The TAURUS C1 Dental System and accessories are intended for use in general dental applications by providing the dental practitioner a user interface to control operation of the dental chair and attached devices. The system delivers air, water, vacuum and electricity to allow the dental practitioner an intuitive control center for all common and normal patient treatment procedures performed in the dental operatory.
### COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE VI. DEVICE
| | Model | A-dec 200 (K102234) | TAURUS C1 for 510K | |
|--------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|
| | Indications for Use | The A-dec 200 Dental<br>System and accessories are<br>intended for use in general<br>dental applications by<br>providing the dental<br>practitioner a user interface<br>to control operation of the<br>dental chair and attached<br>dental devices. The system<br>delivers air, water, vacuum<br>and electricity to allow the<br>dental practitioner an<br>intuitive control center for<br>all common and normal<br>patient treatment procedures<br>performed in the dental<br>operatory | The TAURUS C1 Dental<br>System and accessories are<br>intended for use in general<br>dental applications by<br>providing the dental<br>practitioner a user interface<br>to control operation of the<br>dental chair and attached<br>dental devices. The system<br>delivers air, water, vacuum<br>and electricity to allow the<br>dental practitioner an<br>intuitive control center for<br>all common and normal<br>patient treatment procedures<br>performed in the dental<br>operatory. | |
| | Construction | CHAIR / UNIT / DOCTOR<br>TABLE /ASSISTANT<br>TABLE / OPERATING<br>LIGHT / FOOT<br>CONTROLLER / STOOL | CHAIR / UNIT/ DOCTOR<br>TABLE /ASSISTANT<br>TABLE / OPERATING<br>LIGHT / FOOT<br>CONTROLLER / STOOL | |
| | Power Supply /<br>Frequency | AC100V/110V/120V,<br>AC210/220/230V , 50/60Hz | AC100V/110V/115V,<br>AC210/220/230V, 50/60Hz | |
| | Power<br>Shock<br>Protection | Class 1 | Class 1 | |
| | Electric Protection | B Type | B Type | |
| | | EN 60601-1-2 | EN 60601-1-2 | |
| | EMC Standard | IEC 61000-3-2 | IEC 61000-3-2 | |
| | | IEC 61000-3-3 | IEC 61000-3-3 | |
| | Dental<br>units<br>Standard | ISO 7494-1<br>ISO 7494-2 | ISO 7494-1<br>ISO 7494-2 | |
| | Dental Patient<br>chair Standard | ISO 6875 | ISO 6875 | |
| | Safety Standard | EN 60601-1 | EN 60601-1 | |
| | Chair Operating<br>system | Hydraulic system | Hydraulic system | |
| Description<br>(Comparative<br>testing<br>confirmed<br>equivalence<br>to the noted<br>predicate) | UNIT/CHAIR<br>form type | Over-arm Contour type | Over-arm Contour type | |
| | Vacuum system | Central Vacuum system | Central Vacuum system or<br>Air Vacuum system | |
| | 3-Way Syringe | Adjusting the Water / Air /<br>Spray function is used in the<br>syringe button. | Adjusting the Water / Air /<br>Spray function is used in the<br>syringe button. | |
| | Cuspidor(Spittoon) | Spittoon bowl / Rinsing pipe<br>/ Tumbler filler | Spittoon bowl / Rinsing pipe<br>/ Tumbler filler | |
| | Water System | City Water / Distilled Water | City Water / Distilled Water | |
| | | Comparative testing<br>confirmed equivalence to<br>the noted predicate | | |
| | Light head<br>structure | 3-axis head adjustment<br>method | 3-axis head adjustment<br>method | |
| Operating<br>Light | ON/OFF control | Auto and manual ON/OFF | Auto and manual ON/OFF | |
| | Headrest | Double-articulating<br>headrest | Double-articulating<br>headrest | |
| | Safety switch<br>function | Chair lift arm and auxiliary<br>arm, 2 safety switches | Chair lift arm and auxiliary<br>arm, 2 safety switches | |
| | | The safety switch stops the<br>chair operation. | The safety switch stops the<br>chair operation. | |
| | | | chair | chair |
| | Programmable<br>chair position | Programmable<br>position:<br>Total 4 positions | Programmable<br>position:<br>Total 5 positions | |
| Delivery<br>system | Handpiece holder | 5 angle adjustable holders | 6 integrated rotation type<br>holder | |
| | | Handl e | Adjustable handle | Fixed handle |
| | | Touchpad | Membrane panel | Membrane Panel |
| | | Handpiece water<br>and air cooling | Manually adjustable<br>handpiece water / air cooling | Manually adjustable<br>handpiece water / air cooling |
| | | Flexarm tension | Control the tension to adjust<br>the shift of flexarm rotation<br>flow. | Control the tention to adjust<br>the shift of TABLE ARM<br>rotation. |
| Accessories<br>tools | Accessories holder | HVE, SE, 3-WAY syringe<br>attached | HVE, SE, 3-WAYsyringe<br>attached | |
| | | Holder structure | Rotation and individual<br>holder | Fixed, one-piece holder |
| Support<br>center | Cuspidor | Self-contained 2 liter water<br>bottle system | Attach/detachable GLASS,<br>disassemble for cleaning | |
| | | Sol i ds c ol lec tor | Equipped | Equipped |
| | | Distilled water<br>reservoir | Equipped | Equipped |
| | | Cup water system | Manual water system<br>Press the cupfill button for a<br>timed operation. Press and<br>hold the cupfill button for<br>manual operation. | Automatic and manual water<br>system.<br>Place the cup at the specified<br>location for a timed<br>operation. |
| Accessories<br>attached to<br>the device: | handpiece / Low speed handpiece / Scaler / Curing light / Dental Chair / 3-way<br>syringe | | | |
| Operation<br>Method | Control panel / Assistant control panel / Foot controller | | | |
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#### VII. PERFORMANCE DATA
The following performance data was provided in support of the substantial equivalence determination.
Biocompatibility testing:
TAURUS C1 dental operative unit and accessories use the materials already cleared for patient contact components such as patient chair seat, arm rest, 3 way syringe,
{8}------------------------------------------------
vacuum syringe, and saliva ejector which are similar to the predicate device.
## Non Clinical testing:
IEC 60601-1 Test for Medical Electrical Equipment was performed for General Requirements for basic safety and essential performance. The requirements of specified standards were fulfilled.
IEC 60601-1-2 Test for Medical Electrical Equipment was performed for General Requirements for basic safety and essential performance (collateral standards: electromagnetic compatibility. The requirements of specified standards were fulfilled. ISO 7494-1 Test was performed for general requirements and test methods: Pass ISO 7494-2 Test was performed for general requirements for water and air supply: Pass ISo6875 test was performed for general, electrical, and mechanical requirements: Pass
# VIII. CONCLUSIONS
There are no significant differences between the TAURUS C1 and the predicate device.
In accordance with the Federal Food, Drug and Cosmetic Act, 21 CFR Part 807 and based on the information provided in this premarket notification Shinhung Co, Ltd. concludes that TAURUS C1 is substantially equivalent in comparison with Adec-200, the predicate device as described herein.
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
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Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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Reading rule for every project: how many summaries do you read in full?
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Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.