The HydroCision SpineJet System is indicated for surgical procedures where the cutting and removal of soft tissue and the ablation and removal of hard tissue or bone is required. Specific functions include cutting, ablation and shaping of soft tissue, and decorticating and smoothing of bone, cartilage and other bone related tissue in open and minimally invasive in spinal surgeries.
Device Story
HydroCision SpineJet System is a surgical tool for spinal procedures; utilizes high-pressure saline stream to cut, debride, and remove soft/hard tissue. System consists of sterile, single-use disposable handpiece/tubing assembly and reusable HydroCision Console. Handpiece features two-lumen needle; high-pressure saline lumen delivers fluid; evacuation lumen removes debrided tissue/saline via Venturi effect. Operated by surgeon in OR using foot pedal; guided by fluoroscopy. Console provides pressurized saline and features touch-screen GUI. Device enables precise tissue removal; benefits include minimally invasive access to diseased spinal tissue. Output is physical tissue removal; healthcare provider uses visual feedback from fluoroscopy to guide handpiece. System is a modification of ArthroJet (K041233), extending working lengths and removing obsolete cautery/burr components.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing (performance verification), human factors/usability study (IEC 62366-1:2015), electromagnetic compatibility/electrical safety testing (IEC 60601-1, IEC 60601-1-2), and risk analysis (ISO 14971).
Indicated for patients undergoing open or minimally invasive spinal surgery requiring soft tissue cutting/removal and hard tissue/bone ablation, decortication, or smoothing.
Regulatory Classification
Identification
An arthroscope is an electrically powered endoscope intended to make visible the interior of a joint. The arthroscope and accessories also is intended to perform surgery within a joint.
Predicate Devices
HydroCision ArthroJet with Cautery, TurboBurr and Curette (K041233)
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April 16, 2020
Image /page/0/Picture/1 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left side, there is a symbol representing the Department of Health & Human Services - USA. To the right of the symbol, there is a blue square with the letters "FDA" in white. Next to the blue square, the words "U.S. FOOD & DRUG" are written in blue, with the word "ADMINISTRATION" written in a smaller font size below it.
HydroCision, Inc. % Yashesh Rawal Regulatory Affairs Specialist II MAE Consulting Group, LLC 119 North Road Deerfield, New Hampshire 03037
Re: K200729
Trade/Device Name: HydroCision SpineJet System Regulation Number: 21 CFR 888.1100 Regulation Name: Arthroscope Regulatory Class: Class II Product Code: HRX Dated: March 15, 2020 Received: March 20, 2020
# Dear Yashesh Rawal:
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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part
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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 (QS) 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 medical devices and radiation-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,
Jesse Muir, Ph.D. Acting Assistant Director DHT6C: Division of Restorative, Repair, and Trauma Devices OHT6: Office of Orthopedic Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
#### Indications for Use
Form Approved: OMB No, 0910-0120 Expiration Date: 06/30/2020 See PRA Statement below.
510(k) Number (if known) K200729
Device Name
HydroCision SpineJet System
#### Indications for Use (Describe)
The HydroCision Spinelet System is indicated for surgical procedures where the cutting and removal of soft tissue and the ablation and removal of hard tissue or bone is required. Specific functions include cutting, ablation and shaping of soft tissue, and decorticating and smoothing of bone, cartilage and other bone related tissue in open and minimally invasive in spinal surgeries.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
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FORM FDA 3881 (7/17)
PSC Publishing Sarvices (701) 440-6740
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# Section 5- 510(k) Summary
In accordance with the Food and Drug Administration Rule to implement provisions of the Safe Medical Devices Act of 1990 and in conformance with 21 CRF 807.92, this information serves as a Summary of Safety and Effectiveness for the HydroCision Spinelet System.
5.1.Applicant:
HydroCision, Inc. 267 Boston Rd, North Billerica, MA 01862
5.2.Sponsor Contact Person:
Mr. Mark Lewis Vice President Operations and Regulatory Affairs HydroCision, Inc. 267 Boston Rd, North Billerica, MA 01862 Phone: +1(978)289-1333 Email: mlewis@hydrocision.com
5.3.Regulatory Correspondent/ 510(k) Submission Contact: Mr. Yashesh Rawal, MS Regulatory Affairs Specialist
MAE Consulting Group, LLC 119 North Road, Deerfield, NH 03037 Phone: +1(603)340-7081 Email: yasheshr@maegroups.com
- 5.4.Date Prepared: March 13, 2020
### 5.5.Device Information:
Proprietary Name: HydroCision SpineJet System
| Device: | HydroCision SpineJet System |
|--------------------|-----------------------------|
| Panel: | Orthopedic |
| Regulatory Number: | 21 CFR 880.1100 |
| Regulation Name: | Arthroscope |
| Product Code: | HRX |
| Device Class: | Class II |
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### 5.6.Predicate Device:
HydroCision ArthroJet with Cautery, TurboBurr and Curette (K041233). HydroCision ArthroJet System has been rebranded to HydroCision SpineJet System.
The purpose of this Special 510(k) submission is to implement design changes to the predicate ArthroJet System (K041233) to create a product line extensions with additional working length to encompass different configurations of Spinelet handpiece models and remove obsolete components for Cautery, TurboBurr and Curette from the predicate device. These modifications to the 510(k) cleared ArthroJet System do not change the indications for use of the device, nor do they change the fundamental scientific technology of the device.
#### 5.7.Device Description:
The HydroCision SpineJet System comprises of (i) sterile disposable tubing assembly- SpineJet device and (ii) reusable console unit- HydroCision Console. The components of SpineJet device consists of a pump cartridge, handpiece and tubing assembly (also known as disposable hose). The SpineJet device is provided sterile, via ethylene oxide sterilization. The reusable HydroCision Console are packaged and sold separately. The SpineJet device is designed to be used in combination with the HydroCision console as a SpineJet system. The SpineJet system is connected with a foot pedal, a sterile bag of saline, and a waste container prior to operation.
The SpineJet device pump cartridge plugs into the front of the HydroCision Console. This connection provides power to the SpineJet device and pressurizes the saline to deliver to the tip of the SpineJet handpiece through high pressure saline tube. The SpineJet handpiece consists of a plastic handle and a two-lumen needle: high pressure tube lumen and evacuation tube lumen, which are welded together in the handle. As the high-pressure saline passes from one lumen nozzle to another lumen nozzle, the targeted tissues are cut, debrided and removed into the evacuation tube lumen, passing into the waste container. The SpineJet tubing assembly (also known as disposable hose) consists of three tubes: (i) Clear saline supply tube (fluid supply hose) - which delivers saline from saline bag to pump cartridge (ii) High pressure saline tube- which delivers pressurized saline from the pump cartridge to the tip of Spinelet handpiece and (iii) Evacuation tube (waste hose) - which removes debrided tissue, along with saline from tip of the handpiece and delivers it to waste container, which is provided by the facility.
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The Hydrocision Console (K190804) is an electrically powered device. It provides the power to pressurize sterile saline fluid, which is delivered to the distal tip of the SpineJet handpiece. The HydroCision console includes the software functionality to provide touch-screen LCD display and graphical user interface.
To perform an open or minimally invasive spinal procedure, the SpineJet handpiece needle is inserted into the spine through cannula access set and guided toward the targeted diseased tissue under fluoroscopic guidance. Once the Spinelet handpiece needle is in position, the surgeon activates the high-pressure saline of Spinelet device using the Hydrocision console and foot pedal. Using fluoroscopic guidance, the surgeon uses the Spinelet handpiece to cut and remove the targeted diseased tissue. When the procedure is complete, the handpiece is withdrawn, and the incision is closed using steri-strips for a closed, minimally invasive procedure.
The Spinelet device is provided sterile, via ethylene oxide sterilization.
- 5.8.Indication for Use:
The HydroCision SpineJet System is indicated for surgical procedures where the cutting and removal of soft tissue and the ablation and removal of hard tissue or bone is required. Specific functions include cutting, ablation and shaping of soft tissue, and decorticating and smoothing of bone, cartilage and other bone related tissue in open and minimally invasive spinal surgeries.
### 5.9.Comparison of Technological Characteristics:
The HydroCision SpineJet System is substantially equivalent in intended use, design, performance and principles of operation to the predicate device- HydroCision ArthroJet with Cautery, TurboBurr and Curette (K041233). Both systems include same principle components- (i) Spinelet device consisting of a pump cartridge, handpiece and tubing assembly (disposable hose) and (ii) HydroCision console. The handpiece component of both devices consists of a plastic handle and a two-lumen needle welded in the handle. Both devices are designed to be connected with the HydroCision console, foot pedal, a sterile bag of saline (which is supplied by the facility), and a waste container (supplied by the facility) prior to operation. The differences in the design of the HydroCision SpineJet device and the predicate device are minor and raise no new issues of safety or efficacy. The HydroCision SpineJet device and the predicate device consist of the same technology and are sterilized with same acceptable method. Both the devices are made up of same biocompatible materials.
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Below is a comparison table that provides a top-level overview of the substantial equivalent comparison between proposed and predicate devices.
| Comparative<br>Characteristics | Proposed Device:<br>HydroCision SpineJet System | Predicate Device:<br>HydroCision ArthroJet with Cautery,<br>TurboBurr and Curette |
|---------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) Number | N/A | K041233 |
| Indication for<br>Use | The HydroCision SpineJet System is<br>indicated for surgical procedures where<br>the cutting and removal of soft tissue<br>and the ablation and removal of hard<br>tissue or bone is required. Specific<br>functions include cutting, ablation and<br>shaping of soft tissue, and decorticating<br>and smoothing of bone, cartilage and<br>other bone related tissue in open and<br>minimally invasive spinal surgeries. | The HydroCision ArthroJet System with<br>Cautery, TurboBurr, and Curette is<br>indicated for orthopedic surgical<br>procedures where the cutting and<br>removal of soft tissue and the ablation<br>and removal of hard tissue or bone is<br>required with control of bleeding during<br>those procedures as needed. Specific<br>functions include cutting, ablation and<br>shaping of the soft tissue, and drilling,<br>reaming, decorticating and smoothing of<br>bone, cartilage and other bone related<br>tissue in a variety of surgical procedures<br>including open and minimally invasive<br>spinal surgeries and small and large joint<br>arthroscopic procedures. |
| Principle of<br>Operation | The SpineJet device uses a high-<br>pressure saline to act as a cutting<br>medium to debride and remove<br>targeted tissue material in the intended<br>procedures. As the high pressure saline<br>flows from the one needle lumen<br>nozzle to another at the distal tip of the<br>SpineJet device, a Venturi effect<br>creates localized suction pulling nearby<br>target tissue into the path of the high<br>pressure saline stream where it is cut,<br>debrided and then passes into the<br>evacuation tube to be removed. | The ArthroJet device uses a high-<br>pressure saline to act as a cutting<br>medium to debride and remove<br>targeted tissue material in the intended<br>procedures. As the high pressure saline<br>flows from the one needle lumen nozzle<br>to another at the distal tip of the<br>ArthroJet device, a Venturi effect<br>creates localized suction pulling nearby<br>target tissue into the path of the high<br>pressure saline stream where it is cut,<br>debrided and then passes into the<br>evacuation tube to be removed. |
| Single Use | Yes | Yes |
| Principle System<br>Components | Handpiece, Pump Cartridge and Tubing<br>Assembly | Handpiece, Pump Cartridge and Tubing<br>Assembly |
| Comparative<br>Characteristics | Proposed Device:<br>HydroCision SpineJet System | Predicate Device:<br>HydroCision ArthroJet with Cautery,<br>TurboBurr and Curette |
| (Sterile,<br>Disposable,<br>Single Use) | | |
| Principle System<br>Components/<br>Other devices for<br>interfacing<br>(Reusable) | HydroCision Console Unit, Foot Pedal | HydroCision Console Unit, Foot Pedal |
| Accessories/<br>Convenience Kit | No | No |
| Sterilization | Supplied Sterile, EtO Sterilization | Supplied Sterile, EtO Sterilization |
| Materials | | |
| Handpiece<br>Handle | ABS | ABS |
| Handpiece<br>Needle | Stainless Steel | Stainless Steel |
| Pump Cartridge | Stainless Steel | Stainless Steel |
| High Pressure<br>Tubing Assembly | Polyamide | Polyamide |
| Evacuation<br>Tubing Assembly | Polyurethane | Polyurethane |
| Medical Adhesive | Loctite #4011 | Loctite #4011 |
| Biocompatibility<br>of Materials | Meets ISO 10993-1 requirements | Meets ISO 10993-1 requirements |
| Technical Features/Design | | |
| Tubing Assembly<br>Dimension<br>(Disposable<br>Hose) | High Pressure Hose - 0.143"OD, 0.050"<br>ID<br>Evacuation Tube Hose - 0.125"OD,<br>0.059" ID | High Pressure Hose - 0.143"OD, 0.050"<br>ID<br>Evacuation Tube Hose - 0.125"OD,<br>0.059" ID |
| Pump Cartridge<br>Dimension | Handle Cartridge - Length - 2.00"<br>Piston Body- Length- 1.860<br>Suction Connector- Length- 1.6" | Identical.<br>Handle Cartridge - Length - 2.00"<br>Piston Body- Length- 1.860<br>Suction Connector- Length- 1.6" |
| Comparative<br>Characteristics | Proposed Device:<br>HydroCision SpineJet System | Predicate Device:<br>HydroCision ArthroJet with Cautery,<br>TurboBurr and Curette |
| Handpiece<br>Dimension | Include models of additional length.<br>The dimensional range of Modified<br>device is within the dimensional<br>specification cleared for the predicate<br>device- ArthroJet system. | |
| | Tubing Assembly:<br>High Pressure Hose - 0.143"OD, 0.050"<br>ID | Tubing Assembly: (Identical)<br>High Pressure Hose - 0.143"OD, 0.050"<br>ID |
| | Evacuation Tube Hose - 0.125"OD,<br>0.059" ID | Evacuation Tube Hose - 0.125"OD,<br>0.059" ID |
| | Handle: (Identical)<br>Device Handle Weldment Length-<br>4.593" | Handle: (Identical)<br>Device Handle Weldment Length- 4.593" |
| | Needle:<br>High Pressure lumen/jet tube- 0.045<br>OD, 0.020 ID<br>Evacuation Tube lumen- 0.072 OD,<br>0.063 ID | Needle: (Identical)<br>High Pressure lumen/jet tube- 0.045 OD,<br>0.020 ID<br>Evacuation Tube lumen- 0.072 OD, 0.063<br>ID |
| | Needle Angle:<br>10 Deg, 20 Deg, 30 Deg, 75 Deg | Needle Angle: (Identical)<br>10 Deg, 20 Deg, 30 Deg, 75 Deg |
| | Working Shaft Length (Needle Length) -<br>Additional Models:<br>6.70", 7.61", 7.62", 7.66", 7.739",<br>7.76", 8.28", 8.30", 8.92", 8.96", 13.78" | Working Shaft Length (Needle Length):<br>6.7", 13.78" |
| Comparative<br>Characteristics | Proposed Device:<br>HydroCision SpineJet System | Predicate Device:<br>HydroCision ArthroJet with Cautery,<br>TurboBurr and Curette |
| Device Needle | The SpineJet handpiece needle consists<br>of two lumens: high pressure tube<br>lumen and evacuation tube lumen,<br>which are welded together. The high-<br>pressure lumen delivers high pressure<br>saline to the target tissue site. The<br>evacuation lumen evacuates the saline<br>and debrided tissue material from the<br>target tissue site. | Identical |
| High Pressure<br>Saline Flow Rate<br>(at the pump<br>cartridge) | 230 ml/min at 15,000 psi<br>156 ml/min at 7,500 psi…
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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
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.
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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.
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.