The TCAT™/TPLAN™ Surgical System is intended for use as a device which uses diagnostic images of the patient acquired specifically to assist the physician with presurgical planning and to provide orientation and reference information during intraoperative procedures. The robotic surgical tool, under the direction of the surgeon, precisely implements the presurgical software plan. The preoperative planning software and robotic surgical tool is used as an alternative to manual planning and broaching/reaming techniques for femoral canal preparation in primary total hip arthroplasty (THA). The TCAT™/TPLAN™ Surgical System is indicated for orthopedic procedures in which the broaching/reaming in primary total hip arthroplasty (THA) may be considered to be safe and effective and where references to rigid anatomical structures may be made.
Device Story
TCAT™/TPLAN™ Surgical System is a 3D graphical preoperative planning and robotic implementation tool for primary total hip arthroplasty (THA). System inputs include patient CT scan data. Surgeon uses TPLAN™ workstation to create a high-level operative plan; TCAT™ robotic system, comprising an electromechanical arm, control electronics, and computer, implements this plan. During surgery, the system provides orientation and reference information; the robotic arm performs precise bone preparation (broaching/reaming) under surgeon supervision. Registration is achieved via point-to-surface mapping. The device is used in clinical settings by surgeons to replace manual template planning and manual bone preparation techniques. Benefits include increased precision in femoral canal preparation. The system includes various accessories such as cutters, drapes, irrigation sets, probes, and markers.
Clinical Evidence
Bench testing only. Performance evaluation included functional software testing for the TPLAN™ workstation, hardware testing, user interface validation, and simulated clinical use of new/modified instruments and sterile disposable accessories.
Technological Characteristics
System consists of TPLAN™ planning workstation and TCAT™ robotic electromechanical arm. Features include CT-based 3D graphical planning, point-to-surface registration, and robotic end-effector bone preparation. Connectivity includes host computer and control electronics. Accessories include cutters, drapes, irrigation sets, probes, and markers. Software architecture supports preoperative planning and robotic control.
Indications for Use
Indicated for patients undergoing primary total hip arthroplasty (THA) where manual broaching/reaming is considered safe and effective and where rigid anatomical structures are available for reference.
Regulatory Classification
Identification
A stereotaxic instrument is a device consisting of a rigid frame with a calibrated guide mechanism for precisely positioning probes or other devices within a patient's brain, spinal cord, or other part of the nervous system.
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Image /page/0/Picture/1 description: The image shows the seal of the U.S. Department of Health and Human Services. The seal features the department's name encircling a symbol. The symbol is a stylized representation of a human figure, with three profiles overlapping to suggest community and care. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" are arranged in a circular pattern around the symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 18, 2014
Curexo Technology Corporation % Mr. Glen Emelock 32 Harrison Street Melrose, Massachusetts 02176
Re: K140585
Trade/Device Name: TCAT™/TPLANTM Surgical System Regulation Number: 21 CFR 882.4560 Regulation Name: Stereotaxic instrument Regulatory Class: Class II Product Code: OJP, HAW Dated: July 17, 2014 Received: July 21, 2014
Dear Mr. Emelock:
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.
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
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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 yours.
## Lori A. Wiggins -S
for Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
K140585 510(k) Number:
Device Name: TCAT™/TPLAN™ Surgical System
### Indications For Use:
The TCAT™/TPLAN™ Surgical System is intended for use as a device which uses diagnostic images of the patient acquired specifically to assist the physician with presurgical planning and to provide orientation and reference information during intraoperative procedures. The robotic surgical tool, under the direction of the surgeon, precisely implements the presurgical software plan.
The preoperative planning software and robotic surgical tool is used as an alternative to manual planning and broaching/reaming techniques for femoral canal preparation in primary total hip arthroplasty (THA).
The TCAT™/TPLANTMSurgical System is indicated for orthopedic procedures in which the broaching/reaming in primary total hip arthroplasty (THA) may be considered to be safe and effective and where references to rigid anatomical structures may be made.
AND/OR
Prescription Use × (Part 21 CFR 801 Subpart D)
Over-The-C
(21 CFR §
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH. Office of Device Evaluation (ODE)
TCAT™/TPLANTM
Page 1 of 1
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### 510(k) Summary of Safety and Effectiveness
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
- Submitter Name: Submitter Address : Contact Person: Phone Number: Fax Number: Date Prepared: Device Trade Name: Device Common Name: Classification Name: Requlation Number: Predicate device: Reason for submission:
Curexo Technology Corp. 47320 Mission Falls Court Fremont. CA 94539 Glen Emelock (510) 249-2300 (510) 249-2396 March, 2014 TCAT™/TPLAN™ Surgical System Stereotaxic Instrument Orthopedic Computer Controlled Surgical System, OJP, HAW 21 CFR 882.4560 DigiMatch™ ROBODOC® Surgical System, K072629 Not previously marketed in the USA
#### Device Description:
The TCAT™ TPLAN™ Surgical System is a three-dimensional, graphical, preoperative planner and implementation tool for treatment of patients who require a total hip arthroplasty (THA) procedure. This device is intended as an alternative to manual template planning, broaching, and reaming techniques for the preparation of bone for patients requiring a THA procedure. The system consists of the TPLAN™ Preoperative Planning Workstation and TCAT™ , a robotic system composed of an electromechanical arm, arm base including control electronics and computer, display monitor, and miscellaneous accessories such as cutters, drapes, irrigation sets, probes, and markers. TPLAN™ and TCAT™ when used according to the instructions for use, make precision bone preparation possible before and during THA surgical procedures..
#### Intended Use:
The TCAT™/TPLAN™ Surgical System is intended for use as a device which uses diagnostic images of the patient acquired specifically to assist the physician with presurgical planning and to provide orientation and reference information during intraoperative procedures. The robotic surgical tool, under the direction of the surgeon, precisely implements the presuraical software plan,
The preoperative planning software and robotic surgical tool is used as an alternative to manual planning and broaching/reaming techniques for femoral canal preparation in primary total hip arthroplasty (THA).
The TCAT™/TPLAN™ Surgical System is indicated for orthopedic procedures in which the broaching/reaming in primary total hip arthroplasty (THA) may be considered to be safe and effective and where references to rigid anatomical structures may be made.
#### Predicate Device:
The TCAT™/TPLAN™ Surgical System is substantially equivalent to the DigiMatch™ ROBODOC® Surgical System, K072629.
#### Comparison of Technological Characteristics and Principles of Operation:
The TCAT™/TPLAN™ Surgical System is similar to the legally marketed device listed previously in that they share the same intended use and indications, technological characteristics, principles of operation and performance data as the predicate device.
Table 1 provides a comparison of technological characteristics and principles of operation between the TCAT™/TPLAN™ Surgical System and its predicate device.
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| | Table 1: Comparison of Technological Characteristics and Principles of Operation | | |
|--|----------------------------------------------------------------------------------|--|--|
| | | | |
| Device | Patient Image Data | Presurgical<br>Plan | Surgical<br>Plan Data | Machine<br>Instructions | Patient/Robot<br>Registration<br>Requirement | Robot<br>Electromechanical<br>Arm |
|-------------------------------------------|--------------------|---------------------|-----------------------------------------|-----------------------------------------------------------------------------------|----------------------------------------------|---------------------------------------------------------------------------------------------------------------------|
| DigiMatch™<br>ROBODOC®<br>Surgical System | Yes, CT Scan | Yes,<br>Presurgery | Yes, high<br>level<br>operative<br>plan | Yes, Robotic<br>Arm driven<br>by validated<br>control<br>software and<br>hardware | Yes, point to<br>surface<br>registration | Yes, robot with<br>single<br>electromechanical<br>arm and end<br>effector implement<br>control file<br>instructions |
| TCAT™/TPLAN™<br>Surgical System | Yes, CT Scan | Yes,<br>Presurgery | Yes, high<br>level<br>operative<br>plan | Yes, Robotic<br>Arm driven<br>by validated<br>control<br>software and<br>hardware | Yes, point to<br>surface<br>registration | Yes, robot with<br>single<br>electromechanical<br>arm and end<br>effector implement<br>control file<br>instructions |
Any minor differences between the TCAT™/TPLAN™Surgical System and its predicate device raise no new questions of safety or effectiveness nor change the device's intended therapeutic effect in comparison to its predicate.
#### Performance Data:
The TCAT™ Surgical System has been evaluated with non-clinical performance testing for the following modifications and or improvements:
- TPLAN™/TCAT™ host computer and operating system .
- TPLAN™/TCAT™ Graphical User Interface .
- TPLAN™/TCAT™ Software Architecture .
- . TPLAN™ addition of CT file complete/size check
- TPLAN™ CT Slice Region of Interest .
- TCAT™ Electromechanical Arm .
- TCAT™ Base Hardware .
- TCAT™ Bearing Sleeve .
- . TPLAN™/TCAT™ elimination of pin patient/robot registration
- . TCAT™ Two-Pin Registration Recovery
- TCAT™ Percutaneous Probe .
- . Change of TCAT™ Irrigation Set Length and Manufacturer
- TCAT™ Monitor Drape .
Bench and simulated use tests included functional software testing for the TPLAN™ Surgical Planning Workstation hardware, software, and user interface, and hardware, functional software, user interface, instrument/tool and sterile disposable accessory testing and simulated clinical use of new and changed instrument /tools for the TCAT™/TPLAN™ Surgical System.
#### Conclusions
In conclusion, based on the intended use, indications for use, technological characteristics and performance data the TCAT™TPLAN™ Surgical is substantially equivalent (SE) to the DigiMatch™ ROBODOC® Surgical System, K072629 predicate device.
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.