The dental chair is used so that the patient at the dentist office may sit on it while the dentist is performing diagnosis, treatment, and/or operation. The dental unit consists of patient chair, dentist element, assistant element, water unit, arm system, cuspidor unit, and dental light. The Dental Unit with Chair is intended to supply power to and serve as a base for dental devices and accessories. It is intended for use in the dental clinic/office environment and used by trained dentists and/or dental technicians and assistants. This product is attached with a dental chair.
Device Story
AJAX dental unit (AJ1X) is a chair-mounted dental operative system; includes patient chair, dentist/assistant elements, water unit, arm system, cuspidor, and dental light. Serves as a base and power supply for various dental devices/accessories. Used in dental clinics by trained dentists, technicians, and assistants. Design emphasizes hygiene and ease of maintenance for the clinical environment. Provides a stable platform for patient positioning and instrument support during dental procedures.
Clinical Evidence
Bench testing only. Compliance demonstrated with IEC 60601-1 (basic safety/performance), IEC 60601-1-2 (EMC), ISO 7494-1/2 (general requirements/water/air supply), ISO 9168 (hose connectors), and ISO 6875 (electrical/mechanical requirements).
Technological Characteristics
Chair-mounted dental unit; provides power and base for dental accessories. Complies with IEC 60601-1, IEC 60601-1-2, ISO 7494-1, ISO 7494-2, ISO 9168, and ISO 6875. No software-based algorithmic control described.
Indications for Use
Indicated for patients in a dental office setting requiring a chair for diagnosis, treatment, or operation. Intended for use by trained dentists, dental technicians, and assistants.
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/2 description: The image is a black and white logo for the Department of Health & Human Services - USA. The logo features a stylized image of three human profiles facing right, stacked on top of each other. The profiles are simple and abstract, with only the basic outline of the face visible. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged around the top half of the image in a circular fashion.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 5, 2014
John Neacsu Business Owner Pro Dental Services, LLC 1121 Player Way Herndon, VA 20170
Re: K132245
Trade/Device Name: AJAX dental unit Regulation Number: 21 CFR 872. 6640 Regulation Name: Dental Unit with Chair Regulatory Class: I Product Code: EIA Dated: May 1, 2014 Received: August 6, 2014
Dear Mr. Neacsu:
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. Neacsu
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); 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/ResourcesforYou/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 yours,
## Mary S. Runner -S
Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Device Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known): K132245
Device Name: Dental Unit With Chair Model AJ1X
Indications For Use:
The dental chair is used so that the patient at the dentist office may sit on it while the dentist is performing diagnosis, treatment, and/or operation. The dental unit consists of patient chair, dentist element, assistant element, water unit, arm system, cuspidor unit, and dental light. The Dental Unit with Chair is intended to supply power to and serve as a base for dental devices and accessories. It is intended for use in the dental clinic/office environment and used by trained dentists and/or dental technicians and assistants. This product is attached with a dental chair.
Prescription Use __ X __ AND/OR Over-The-Counter Use
(Part 21 CFR 801 Subpart D) (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF
NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
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## 510(k) Summary
(per CFR 807.92(c))
| Submission Date: | Dec 09, 2013 | |
|----------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
| Submission Correspondent: | Pro Dental Services Llc.<br>1121 Player Way<br>Herndon, VA 20170<br>USA<br>Phone:<br>Fax:<br>Email:<br>Contact: | (703) 206-8570<br>(703) 436-2735<br>johnn@prodentalservices.com<br>John Neacsu<br>Business Owner |
| Sponsor and Manufacturer: | Guangzhou Ajax Medical Equipment<br>No. 80 Zhujiang Road<br>Shilou Town<br>Panyu District<br>Guangzhou, China<br>Phone:<br>Email:<br>Contact: | 086-20-8484-7938<br>ajax@ajaxdent.com<br>Kent Zhao |
| Device trade name: | Ajax Dental Unit - AJ1X | |
| Common name: | Dental Unit with Chair | |
| Device classification name: | EIA, Dental operative unit and accessories, 21 CFR 872.6640 | |
| Legally marketed device to<br>which device is<br>substantially equivalent: | 1. A-DEC 200 Dental System, K102234, Manufactured by<br>A-DEC, Inc.<br>2. Dental Unit with Chair, K080438, Manufactured by North West<br>Medical Instrument (Group) Co., Ltd. | |
| Description of device: | Ajax Dental Unit AJ1X is a dental operative unit attached to a chair. It<br>consists of a patient chair, dentist element, assistant element, water<br>unit, arm system, cuspidor unit, and dental light. The AJ1X unit is<br>specially designed to meet the needs of dental professionals. The<br>concept of hygienic treatment is emphasized in the unit design.<br>Components are designed in the way which dentist can easily maintain<br>and clean. Concept of the unit is to optimize the work for dental<br>practice, as well as provide a very clean and healthy treatment<br>environment for both dentists and patients. | |
| Intended use of device: | The dental chair is used so that the patient at the dentist office may sit on it while the dentist is performing diagnosis, treatment, and/or operation. The dental unit consists of patient chair, dentist element, assistant element, water unit, arm system, cuspidor unit, and dental light. The Dental Unit with Chair is intended to supply power to and serve as a base for dental devices and accessories. It is intended for use in the dental clinic/office environment and used by trained dentists and/or dental technicians and assistants. This product is attached with a dental chair. | |
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- Technological characteristics: The technological characteristics between the predicate and proposed device are similar. Both are chair mounted dental units which supply power and serve as a base for dental devices and accessories.
- Non clinical testing: - IEC 60601-1-2 Test for Medical Electrical Equipment was performed on 04/13/2012 for General requirements for basic safety and essential performance (collateral standard: electromagnetic compatibility) with the following outcome: complied with standards.
- IEC 60601-1 Test for Medical Electrical Equipment was performed on 04/30/2012 for General Requirements for basic safety and essential performance with the following outcome: fulfilled the requirements of specified standards, was subjected to full test.
- ISO7494-2 Test was performed on 04/18/2012 for requirements for water and air supply with the following outcome: pass.
- ISO7494-1 Test was performed for General requirements and test methods with the following outcome: pass.
- ISO9168 Test was performed on 04/25/2012 for Hose connectors for air driven dental hand pieces with the following outcome: pass.
- ISO6875 Test was performed on 04/20/2012 for General, electrical, and mechanical requirements with the following outcome: pass.
Conclusions: There are no significant differences between the Ajax Dental Unit AJ1X and the predicate devices, therefore, the proposed device does not raise any questions regarding safety and effectiveness.
> The Ajax Dental Unit AJ1X, as designed, is as safe and effective as the predicate device. Comparisons have been made to a legally marketed predicate device, and the device is determined to be substantially equivalent to the referenced predicate device currently on the market.
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
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).
2. The results table
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.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
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.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
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.
8. Chart view
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.