K132264 · Nakanishi, Inc. · HBC · Dec 17, 2013 · Neurology
Device Facts
Record ID
K132264
Device Name
PRIMADO2 TOTAL SURGICAL SYSTEM
Applicant
Nakanishi, Inc.
Product Code
HBC · Neurology
Decision Date
Dec 17, 2013
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 882.4360
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Primado 2 is an AC-electrically powered total surgical system that is intended for cutting, drilling, sawing, and otherwise manipulating soft tissue, bone, bone cement, prosthesis, implant, and other bone related tissue in a variety of surgical procedures, including but not limited to Cranial (Craniofacial), ENT, Endoscopic / Arthroscopic, Neuro, Orthopedic, Spinal, and General surgical procedures.
Device Story
Primado2 is an AC-powered surgical system comprising a control unit, optional foot control, and various motor-driven handpieces (e.g., slim, high torque, bone saw, wire pin driver). System accepts burs, drills, saw blades, and rasps for surgical manipulation of bone and soft tissue. Control unit manages motor speed, rotation direction, and integrated irrigation functions; supports asynchronous operation of two motors. Foot control provides user-programmable interface for functions like ON/OFF, speed, reverse, and irrigation. Used in clinical settings (OR) by surgeons. Output is mechanical power for surgical cutting/drilling. System benefits patients by enabling precise tissue/bone manipulation during diverse surgical procedures.
Clinical Evidence
Bench testing only. Verification and validation testing performed to internal functional specifications, including software. Compliance with IEC 60601-1 (electrical safety) and IEC 60601-1-2 (EMC) confirmed. Biocompatibility and sterilization validations performed. No clinical data presented.
Technological Characteristics
AC-electrically powered surgical system. Components: control unit, foot control, motors, handpieces, and attachments. Software-driven control of speed, rotation, irrigation, and configuration. Connectivity: supports two simultaneous motor connections. Standards: IEC 60601-1, IEC 60601-1-2. Biocompatibility and sterilization standards applied.
Indications for Use
Indicated for cutting, drilling, sawing, and manipulating soft tissue, bone, bone cement, prostheses, and implants in cranial, ENT, endoscopic/arthroscopic, neuro, orthopedic, spinal, and general surgical procedures.
Regulatory Classification
Identification
An electric cranial drill motor is an electrically operated power source used with removable rotating surgical cutting tools or drill bits on a patient's skull.
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# 132264
# 5. 510(k) SUMMARY
DEC 1 7 2013
| Comments of the comments of the | | | | |
|-------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter: | Nakanishi, Inc.<br>700 Shimohinata<br>Kanuma-Shi, Tochigi-Ken Japan 322-8666 | | | |
| Contact Person: | Ms. Diane Rutherford<br>Submissions Manager, Ken Block Consulting<br>TEL: 972-480-9554<br>FAX: 972-767-4325<br>rutherford@kenblockconsulting.com | | | |
| Date Prepared: | July 12, 2013 Revised December 17, 2013 | | | |
| Trade Name: | Primado2 Total Surgical System | | | |
| Common Name: | Electrical Surgical System | | | |
| Classification Name: | HBC | 882.4360 | Motor, Drill, Electric, Cranial | |
| Secondary<br>Classification Name: | ERL | 874.4250 | Drill, Surgical, ENT (Electric or Pneumatic), Including<br>Handpiece | |
| Additional Product<br>Codes for<br>Accessories: | DZI<br>DZJ<br>ERL<br>GEY<br>HBC<br>HBE<br>HWE<br>GFF<br>EQJ | 872.4120<br>872.4120<br>874.4250<br>878.4820<br>882.4360<br>882.4310<br>878.4820<br>878.4820<br>874.4140<br>* 510(k) Exempt | Class 2<br>Class 2<br>Class 2<br>Class 1*<br>Class 2<br>Class 2<br>Class 1*<br>Class 1*<br>Class 1* | Drill, Bone, Powered<br>Driver, Wire, and Bone Drill, Manual<br>Drill, Surgical, ENT (Electric or Pneumatic),<br>Including Handpiece<br>Surgical instrument motors and accessories<br>/ attachments<br>Motor, Drill, Electric, Cranial<br>Drills, Burs, Trephines & Accessories (Simple,<br>Powered), cranial<br>Instrument, Surgical, Orthopedic, AC-Powered<br>Motor and Accessory/Attachment<br>Bur, Surgical, General & Plastic surgery<br>Bur, Ear, nose and throat |
| Predicate Device: | K083112 - Nakanishi Primado Surgical Drill<br>K040369 - Stryker CORE<br>K040300 - Stryker CORE<br>K081475 - Medtronic IPC<br>K053526 - Aesculap microspeed™ uni | | | |
| Device Description: | The Primado2 consists of the Control Unit, the Foot Control (optional)<br>and various handpieces for use with specific motors. Available Motors include<br>Slim, High Torque, Micro Bone Saw, and Wire Pin Driver. Each motor series has<br>handpieces or attachments specific to that series. Burs, drills, blades (saws), and<br>rasps are available for use with specific handpieces / attachments. Handpieces and<br>attachments are available for cranial surgery, trephination, oral surgery, and<br>craniotomy. Sagittal, reciprocating, and oscillation saw blades are available,<br>including for intra oral use. | | | |
Image /page/0/Picture/4 description: The image shows a black and white drawing of a bird. The bird is in mid-flight, with its wings spread out. The bird's body is long and slender, and its tail is long and pointed. The bird's head is small and round, and its beak is short and sharp. The bird is flying over a body of water.
Section 5: Page 1 of 2
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## K132264
### 510(k) SUMMARY (continued)
Device Description: (continued)
The control unit drives the motors during procedures and is used to control the functions related to that motor such as speed and rotational direction. Two motors can be connected to the control unit at one time for asynchronous use. The control unit also incorporates the irrigation pump and controls the irrigation functions.
The foot control is an optional additional user interface. The foot control is available as a single or multi control. The single foot control has one button that can be programmed. The multi foot control has three buttons that can be programmed. The features available for allocation to the buttons include Foot Control ON/OFF, A/B Control Switching, Speed Control, Reverse Rotation, Irrigation ON/OFF, Flush, and Disable.
- The Primado 2 is an AC-electrically powered total surgical system that is intended Statement of for cutting, drilling, sawing, and otherwise manipulating soft tissue, hard tissue, Intended Use: bone, bone cement, prosthesis, implant, and other bone related tissue in a variety of surgical procedures, including but not limited to Cranial (Craniofacial / Maxillofacial), ENT, Endoscopic / Arthroscopic, Neuro, Orthopedic, Spinal, and General surgical procedures.
As with the predicate devices referenced above, the Primado2 is an AC-electrically Summary of powered software driven total surgical system that powers and controls the Technological functions of compatible motor attachments. The software allows for the control of Characteristics: the device features such as brightness, volume, speed control, rotational direction, irrigation control, priming control, footswitch control and confirmation, and configuration settings. The proposed device shares technological characteristics with the predicate devices. The proposed device also has some differences in technological characteristics from those of the predicate devices. Any differences in the technological characteristics are minor and reflect market strategy and/or perceived user preferences and do not impact the safety, effectiveness, or substantial equivalence of the device.
- Tests were performed on the Primado2 including verification/validation testing Performance to internal functional specifications (including software) which demonstrated Testing: that the device is safe and effective. Documentation was provided demonstrating compliance of the Primado2 to all FDA requirements stated in Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices, verification/validation plus traceability of of including results verification/validation tests to software requirements and software risk hazards. Testing confirmed that the Primado2 complies with relevant voluntary safety standards for Electrical safety and Electromagnetic Compatibility testing, specifically IEC standards 60601-1 and 60601-1-2. In addition, evaluations and validations have been performed to demonstrate compliance to the applicable standards for biocompatibility and sterilization.
- Nakanishi, Inc. considers the Primado2 to be substantially equivalent to the Conclusion: predicate devices listed above. This conclusion is based on the similarities in primary intended use, principles of operation, functional design, and established medical use.
Image /page/1/Picture/9 description: The image shows a black and white drawing of a bird in flight. The bird has a long, pointed beak and outstretched wings. The bird's body is detailed with lines to show the feathers. The background is plain, with some text at the bottom of the image.
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized caduceus symbol, which is a staff with two snakes coiled around it, often associated with medicine and healthcare. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" is arranged in a circular fashion around the caduceus symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
Nakanishi Incorporated c/o Ms. Diane Rutherford Ken Block Consulting 1201 Richardson Dr., Suite 280 Richardson, Texas 75080
December 17, 2013
Re: K132264
Trade/Device Name: Primado2 Total Surgical System Regulation Number: 21 CFR 882.4360 Regulation Name: Electric cranial drill motor Regulatory Class: Class II Product Code: HBC Additional Product Codes: ERL, HBE, HWE Dated: November 6, 2013 Received: November 7, 2013
Dear Ms. Rutherford:
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. Ilisting 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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical
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Page 2 - Ms. Diane Rutherford
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 Small Manufacturers, International and Consumer Assistance at its tollfree 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 Small Manufacturers, International and Consumer Assistance 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,
# Joshua C. Nipper -S
Binita S. Ashar, M.D., M.B.A., F.A.C.S. Acting Director For Division of Surgical Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# INDICATIONS FOR USE
2011 - 12 - 1 - - 1 - - 1 - - - -
# 510(k) Number: K132264
Device Name: Primado2 Total Surgical System
Indications for Use:
The Primado 2 is an AC-electrically powered 10tal surgical system that is intended for cutting, drilling, sawing, and otherwise manipulating soft tissue, bone, bone, bone cement, prosthesis, implant, and other bone related tissue in a variety of surgical procedures, including but not limited to Cranial (Craniofacial), ENT, Endoscopic / Arthroscopic / Arthroscopic, Neuro, Orthopedic, Spinal, and General surgical procedures.
Prescription Use _ (21 CFR 801 Subpart D) AND/OR
Over-the-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDHR, Office of Device Evaluation (ODE)
Neil R Oge 2013.12.16 # 2 -05'00'
(Division Sign-off)for BSA Division of Surgical Devices K132264 :510(k) Number:
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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.