The TSolution One® Cupl Surgical System is intended for use as a device that uses 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 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/impacting techniques for femoral canal and acetabular cup preparation in primary cementless total hip arthroplasty (THA) using a posterior approach. The TSolution One® Cupl Surgical System is indicated for orthopedic procedures in which the broaching, reaming, and impacting techniques used in primary cementless total hip arthroplasty (THA) using a posterior approach may be considered to be safe and effective and where references to rigid anatomical structures may be made. The TSolution One® Cup1 Surgical System is also intended to assist the surgeon in determining reference alignment axes in relation to anatomical and instrumentation structures during stereotactic orthopedic surgical procedures. The TSolution One® Cupl Surgical System facilitates accurate positioning of THA implants, relative to these alignment axes.
Device Story
System comprises TPLAN preoperative planning workstation and TCAT robotic system; inputs include patient CT scan data; surgeon uses TPLAN to create 3D surgical plan; TCAT robotic electromechanical arm implements plan intraoperatively; system performs point-to-surface registration to align patient anatomy with plan; robot executes femoral canal and acetabular cup preparation; used in clinical setting by surgeons; provides precise implant positioning relative to reference alignment axes; replaces manual broaching/reaming/impacting; benefits include increased precision in THA procedures.
Clinical Evidence
Bench testing only. Verification and validation activities included software testing for TPLAN and TCAT functionality, and surgical instrument testing to confirm performance for THA procedures including acetabular cup guidance. All tests passed.
Technological Characteristics
System includes TPLAN workstation and TCAT robotic arm with control electronics, display, and surgical accessories (cutters, probes, markers). Employs stereotactic robotic guidance for orthopedic surgery. Uses CT scan input for 3D planning. Registration via point-to-surface method. Software-driven electromechanical arm implementation.
Indications for Use
Indicated for patients requiring primary cementless total hip arthroplasty (THA) using a posterior approach where manual broaching, reaming, and impacting techniques are considered safe and effective and where references to rigid anatomical structures can be made.
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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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 14, 2016
Think Surgical Inc. % Mr. Glen Emelock Senior Partner The CRO Group, Inc. 32 Harrison Street Melrose. Massachusetts 02176
Re: K162195
Trade/Device Name: TSolution One® Cup1 Surgical System Regulation Number: 21 CFR 882.4560 Regulation Name: Stereotaxic instrument Regulatory Class: Class II Product Code: OLO Dated: August 5. 2016 Received: August 18, 2016
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 Parts 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/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,
# Mark N. Melkerson -S
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
510(k) Number (if known) K162195
Device Name TSolution One® Cup1 Surgical System
# Indications for Use (Describe)
The TSolution One® Cupl Surgical System is intended for use as a device that uses 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 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/impacting techniques for femoral canal and acetabular cup preparation in primary cementless total hip arthroplasty (THA) using a posterior approach.
The TSolution One® Cupl Surgical System is indicated for orthopedic procedures in which the broaching, reaming, and impacting techniques used in primary cementless total hip arthroplasty (THA) using a posterior approach may be considered to be safe and effective and where references to rigid anatomical structures may be made.
The TSolution One® Cup1 Surgical System is also intended to assist the surgeon in determining reference alignment axes in relation to anatomical and instrumentation structures during stereotactic orthopedic surgical procedures. The TSolution One® Cupl Surgical System facilitates accurate positioning of THA implants, relative to these alignment axes.
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|
| <span>☑ Prescription Use (Part 21 CFR 801 Subpart D)</span> | <span>☐ Over-The-Counter Use (21 CFR 801 Subpart C)</span> |
|-------------------------------------------------------------|------------------------------------------------------------|
|-------------------------------------------------------------|------------------------------------------------------------|
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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: THINK Surgical. Inc. Submitter Address : 47320 Mission Falls Court Fremont, CA 94539 Contact Person: Glen Emelock Phone Number: (510) 249-2300 Fax Number: (510) 249-2396 Date Prepared: August, 2016 Device Trade Name: TSolution One® Cup1 Surgical System Device Common Name: Stereotaxic Instrument Orthopedic Computer Controlled Surgical System, OLO Classification Name: Regulation Number: 21 CFR 882.4560 TSolution One™ w/ACG+ Surgical System, K153647 Predicate device: Reason for submission: Not previously marketed in the USA
#### Device Description:
The TSolution On® Cup1 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, reaming and impacting techniques for the preparation of femoral canal and acetabular cup for patients requiring a primary 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 femoral canal and acetabular cup preparation possible before and during THA surgical procedures..
#### Intended Use:
The TSolution One® Cup1 Surgical System is intended for use as a device that 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 surqeon, 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/impacting techniques for femoral canal and acetabular cup preparation in primary cementless total hip arthroplasty (THA) using a posterior approach.
The TSolution One® Cup1 Surgical System is indicated for orthopedic procedures in which the broaching, reaming and impacting techniques used in primary cementless total hip arthroplasty (THA) using a posterior approach may be considered to be safe and effective and where references to rigid anatomical structures may be made.
The TSolution One® Cup1 Surgical System is also intended to assist the surgeon in determining reference alignment axes in relation to anatomical and instrumentation structures during stereotactic orthopedic surgical procedures. The TSolution One® Cup1 Surgical System facilitates accurate positioning of THA implants, relative to these alignment axes.
#### Predicate Device:
The TSolution One® Cup1 Surgical System is substantially equivalent to the TSolution One™ w/ACG+ Surgical System, K153647.
#### Comparison of Technological Characteristics and Principles of Operation:
The TSolution One® Cup1 Surgical System is very similar to the legally marketed predicate in that they share the same intended use and indications, same fundamental scientific technology, same principles of operation and similar technological characteristics and performance data as the predicate device.
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Table 1 provides a comparison of technological characteristics and principles of operation between the The TSolution One® Cup1 Surgical System and its predicate devices.
| Device | Patient Image Data | Presurgical<br>Plan | Surgical<br>Plan Data | Machine<br>Instructions | Patient/Device<br>Registration<br>Requirement | Robot<br>Electromechanical<br>Arm |
|---------------------------------------------|--------------------|---------------------|-----------------------------------------|-----------------------------------------------------------------------------------|-----------------------------------------------|---------------------------------------------------------------------------------------------------------------------|
| TSolution One®<br>w/ACG+ Surgical<br>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 |
| TSolution One™<br>Cup1 Surgical<br>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 |
Table 1: Comparison of Technological Characteristics and Principles of Operation
Any minor differences between the TSolution One® Cup1 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 TSolution One® Cup1 Surgical System has been evaluated with non-clinical performance testing for the following modifications and or improvements:
- TPLAN Buq Fixes .
- TCAT Bug Fixes ●
- TCAT Instrument Changes .
- System User Manuals Changes .
### Table 2: Verification / Validation Activities
| Verification / Validation Activity | Purpose | Results |
|-------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| Software Testing | Verify TPLAN presurgical planning and TCAT<br>surgical system software function as intended to<br>successfully complete THA procedure including<br>Acetabular Cup Guidance | PASS |
| Support Surgical Instrument Testing | Verify TCAT surgical support instruments function<br>as intended to successfully complete THA<br>procedure including Acetabular Cup Guidance and<br>meet user needs. | PASS |
In accordance with the Design Control process, risk analysis was conducted to evaluate the impact of modifications to the predicate instruments. Design verification testing were conducted on the subject instruments to confirm that the design input requirements and that each instrument is safe and effective for its intended use.
### Conclusions
The results of performance testing indicated the device performed within the intended use and the differences between the predicate and the TSolution One® Cup1 Surgical System do not raise any new safety or efficacy issues. Supporting information included in this premarket submission confirms that the TSolution One® Cup1 Surgical System is safe and effective for the intended use and is substantially equivalent to the predicate device.
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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
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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.
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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.
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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.
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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.
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.