7D Surgical System - Percutaneous Application (7D Flash Frame)
Applicant
7D Surgical
Product Code
OLO · Neurology
Decision Date
May 20, 2022
Decision
SESE
Submission Type
Special
Regulation
21 CFR 882.4560
Device Class
Class 2
Indications for Use
The 7D Surgical System Percutaneous Application is a stereotaxic image guidance system intended for the spatial positioning and orientation of spinal surgical instruments used by surgeons. The system is also intended to be used as the primary surgical luminaire during image guided surgery. The device is indicated for posterior approach spine surgery where reference to a rigid anatomical structure can be identified.
Device Story
The 7D Surgical System is a stereotaxic image-guided navigation system for minimally invasive spine surgery. It uses a sterile, single-use 'Flash Frame' placed on the patient's skin over the surgical drape. The system acquires intra-operative tomographic scans and 3D structured light images. Software registers the Flash Frame points from the tomographic scan to the structured light image to create a 3D map of the surgical site. A reference frame is attached to the spine or iliac crest. Surgeons use the system to track instruments in real-time during surgery. The system also functions as a surgical luminaire. It is operated by surgeons in an OR setting. The output provides visual navigation guidance, assisting in instrument placement and potentially improving surgical accuracy and patient outcomes.
Clinical Evidence
No clinical data was required. Substantial equivalence was demonstrated through non-clinical verification and validation, including system-level testing, software validation, and surgical simulations on phantom models. Accuracy was verified using Target Registration Error (TRE) metrics on phantom models to ensure performance meets design specifications.
Technological Characteristics
Stereotaxic image guidance system; utilizes structured light imaging and intra-operative tomographic scans. Includes a sterile, single-use Flash Frame. Software-based registration of 3D tomographic data to structured light images. System functions as a surgical luminaire. Connectivity involves integration with surgical navigation hardware. Complies with electrical and physical safety standards for stereotaxic instruments (21 CFR 882.4560).
Indications for Use
Indicated for posterior approach spine surgery in patients where reference to a rigid anatomical structure can be identified. Used by surgeons for spatial positioning and orientation of spinal surgical instruments and as a surgical luminaire.
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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May 20, 2022
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7D Surgical Daniel Ziskind Director. Quality & Regulatory 60 scarsdale road, unit 118 Toronto, Ontario M3B 2R7 Canada
Re: K220522
Trade/Device Name: 7D Surgical System - Percutaneous Application (7D Flash Frame) Regulation Number: 21 CFR 882.4560 Regulation Name: Stereotaxic Instrument Regulatory Class: Class II Product Code: OLO Dated: April 20, 2022 Received: April 20, 2022
Dear Daniel Ziskind:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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
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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) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Shumaya Ali, M.P.H. Assistant Director DHT6C: Division of Restorative, Repair and Trauma Devices OHT6: Office of Orthopedic Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K220522
Device Name
7D Surgical System - Percutaneous Application (7D Flash Frame)
Indications for Use (Describe)
The 7D Surgical System Percutaneous Application is a stereotaxic image guidance system intended for the spatial positioning and orientation of spinal surgical instruments used by surgeons. The system is also intended to be used as the primary surgical luminaire during image guided surgery. The device is indicated for posterior approach spine surgery where reference to a rigid anatomical structure can be identified.
Type of Use (Select one or both, as applicable)
| <span style="font-family:Wingdings;"> </span> Prescription Use (Part 21 CFR 801 Subpart D) |
|--------------------------------------------------------------------------------------------|
| <span style="font-family:Wingdings;"> </span> Over-The-Counter Use (21 CFR 801 Subpart C) |
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# K220522
# 510(k) Summary of Safety and Effectiveness 7D Surgical System
This summary of safety and effectiveness information is submitted in accordance with 21CFR §807.92.
#### 1. Submitter's name, address, telephone number, contact person.
7D Surgical, Inc. 60 Scarsdale Road, Unit 118 Toronto, ON, M3B 2R7, Canada
| Contact person: | Daniel Ziskind |
|-----------------|--------------------------------------------------------------|
| | Quality and Regulatory, Director |
| | 7D Surgical ULC |
| | 60 Scarsdale Road, Unit 118 |
| | Toronto, ON, M3B 2R7, Canada |
| Phone: | (647) 484-0079 |
| Fax: | (647) 749-0400 (wait until you hear a message, then press 7) |
| Email: | daniel.ziskind@7dsurgical.com |
Date prepared: February 22, 2022
- 2. Name of the device, including the trade or proprietary name if applicable, the common or usual name, and the classification name, if known:
| Common/usual name: | Computer-assisted surgical device |
|--------------------|-------------------------------------------------------------------|
| Proprietary name: | 7D Surgical System - Percutaneous Application<br>(7D Flash Frame) |
These devices are classified as follows:
| Classification<br>Name | 21 CFR Section | Product Code |
|---------------------------|---------------------|--------------|
| Stereotaxic<br>instrument | 21 CFR<br>§882.4560 | OLO |
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## 3. Substantially Equivalent Devices
7D Surgical believes the 7D Surgical System and Percutaneous Application is substantially equivalent to the following currently marketed devices:
| Product | 510(k) |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------|
| 7D Surgical Percutaneous Application (7d Registration Frame, 7d Flex Iliac Pin Connector, 7d Pin Guide Block, 7d 3.2 Mm Steinmann Pin, 7d Iliac Crest Pin Chuck & Key) | K210457 - Primary Predicate |
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The indications for use of the subject device 7D Surgical System are equivalent to the predicate device K210457. Furthermore, the technological characteristics of the 7D Surgical System are substantially equivalent. The differences in the technological characteristics do not raise new questions of safety and effectiveness. Consequently, the subject is substantially equivalent to the predicate device.
#### 4. Purpose of Submission
The proposed change for the 7D Surgical System is to introduce the 7D Surgical Flash Frame for the previously cleared Percutaneous Application (K210457) which provides minimally invasive image guided spine surgery. Similar to the previous 7D Surgical System K210457, the device registers tomographic DICOM data to structured light images which utilizes intra-operative tomographic scans.
The proposed application intends to introduce the Sterile, Single Use Flash Frame which is applied above the patient skin over the patient drape, similar to the currently cleared 7D Registration Frame, in the region of interest where registration is intended. The major change from the previous Registration Frame is that the proposed Flash Frame has no marker posts to attach optical marker spheres which track the position of the frame in relation to patient Reference Frame during structured light acquisition. In addition, the Flash Frame is provided sterile as opposed to the previous non-sterile Registration Frame.
#### 5. Indications for Use
The 7D Surgical System Percutaneous Application is a stereotaxic image guidance system intended for the spatial positioning and orientation of spinal surgical instruments used by surgeons. The system is also intended to be used as the primary surgical luminaire during image guided surgery. The device is indicated for posterior approach spine surgery where reference to a rigid anatomical structure can be identified.
## 6. Device Description and Technical Comparison to Predicate Devices
The 7D Surgical System is intended for use as a stereotaxic image guided surgical navigation system during minimally invasive spine surgery. The system performs Percutaneous image guided surgery by acquiring an intra-operative tomographic scan of the patient with the 7D Surgical Flash Frame attached to the patient's skin over the incision drape in the region of interest where the spine surgery is to be performed. In addition, the intra-operative tomographic scan is taken with the 7D Surgical Reference Frame rigidly attached to either the spine or iliac crest. The 7D System then generates a three-dimensional (3D) image of the surgical site and the 7D Flash Frame. Registration is performed by the system software registering points from the 7D Flash Frame generated from the 3D intra-operative tomographic scan to the 3D structured light image generated by the system.
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The major difference between the previous spine application and the proposed Percutaneous Application is that registration is now performed using the sterile single use Flash Frame. Similar to the previous Registration Frame, registration is performed by picking landmarks on the frame which is placed on the patient drape above the patient skin. Verification of the registration must be confirmed by using a tracked navigational tool on the boney anatomy of the spine prior to navigation. It should be noted that there have been no changes to the previous 7D Surgical System hardware and Percutaneous tool sets with exception to the introduction of the Flash Frame and the Percutaneous Application to enable use of this new instrument.
## 7. Safety Considerations
This change to add compatibility to the 7D System to include navigational tracking of the Percutaneous Application did not impact conformity to regulatory compliance standards as only the system software has been modified to support this new feature. Software, Mechanical Design, and User Instructions risk control measures have been implemented to ensure all new risks associated with use of the Percutaneous Application have been adequately controlled.
## 8. Technological Characteristics
The literature research and the comparison to the predicate devices show that the device makes use of equivalent technological characteristics and functionality and is intended for equivalent surgical procedures as compared to the predicate devices.
## 9. Nonclinical Performance Data
Verification and Validation activities have been conducted to provide assurance that the device meets the performance requirements under the indications for use conditions.
7D Surgical performed the following testing to demonstrate equivalence to the predicate device:
- Non-Clinical System, Software, and Instrumentation Verification and Validation
- Non-Clinical Performance Surgical Simulations Conducted on Phantom Models
- Compliance Conformity Assessments ●
- Sterilization and Packaging Validation Studies for 7D Surgical Flash Frame ●
Device performance tests were performed to verify the absolute accuracy and repeatability of the accuracy of the device, and the navigation accuracy. Target Registration Error (TRE)
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has been used to evaluate the simulated accuracy of the system on phantom models in a simulated environment. TRE evaluates the error discrepancy between the position reported by the image guided surgery system and the ground truth position measured physically or otherwise.
The following table contains a summary of verification and validation performed on the 7D Surgical System:
| Verification and Validation | Description | Conclusion |
|--------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------|
| System Verification | Scope of the test is to verify the<br>design requirement<br>specifications of 7D Surgical<br>System under test case<br>protocols. | Verification successful, all<br>design requirements have been<br>fulfilled. |
| System Validation | Scope of the test is to validate<br>the Indications For Use and<br>Customer Requirements of the<br>7D Surgical System under<br>simulated use case situations. | Validation successful, all user<br>needs met. |
| Safety regarding risk analysis | Implementation and<br>effectiveness of all risk control<br>requirements specified in the<br>7D Surgical System risk<br>analysis are tested and<br>verified. | Risk Control requirements are<br>effective and mitigate the<br>associated risks to an<br>acceptable level. |
| Non-Clinical Accuracy | System's accuracy is tested<br>using the 7D Surgical System<br>on phantom models using<br>Target Registration Error. | All accuracy specifications<br>have been met for the<br>Percutaneous Application. |
All non-clinical tests successfully passed demonstrating that the subject device performs as safely and effectively as the predicate device and supporting substantial equivalence.
## 10. Clinical Data
A clinical trial was not required to demonstrate safety and effectiveness of the 7D Surgical System. Clinical validation is unnecessary as the 7D Surgical System introduces no new indications for use, and device features are equivalent to the previously cleared predicate device identified.
## 11. Conclusion
The 7D Surgical System is substantially equivalent in safety and effectiveness to the predicate devices identified above:
- The predicate devices and 7D Surgical System use equivalent technologies.
- The predicate devices and 7D Surgical System are designed and manufactured to the similar electrical and physical safety standards.
The non-clinical verification and validation performed demonstrate that the 7D Surgical System Percutaneous Application meets design specifications. The conclusions drawn
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from the non-clinical tests demonstrate that the 7D Surgical System performs as safely and effectively as the legally marketed predicate device according to the comparison based on the requirements of 21 CFR §882.4560 and the information provided herein. It is concluded that the 7D Surgical System is substantially equivalent to the predicate device with respect to its indications for use, technological characteristics, and performance characteristics.
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.