The RadiaPak™ Brachytherapy Applicator Balloon Device is a single use, non-sterile, disposable, inflatable, non-powered positioning device, manufactured without the use of latex, intended to be used on a daily treatment basis to position and stabilize the brachytherapy radiation delivery applicator within the vagina or rectum during brachytherapy radiation therapy procedures, x-ray, or computed tomography (CT) exam. The placement of the balloon device requires a physician directed healthcare professional.
Device Story
RadiaPak™ is a single-use, non-sterile, inflatable, latex-free polyurethane balloon device; used to position and stabilize brachytherapy radiation delivery applicators within the vagina or rectum. Operated by physician-directed healthcare professionals during brachytherapy, x-ray, or CT procedures. Device is inflated with air, saline, or water via a stopcock valve to space the applicator surface from targeted mucosal membranes. Stabilization of the applicator ensures consistent geometry during treatment delivery; potentially improving radiation dose accuracy and patient outcomes. Device is disposable and intended for daily treatment use.
Clinical Evidence
No clinical data submitted. Safety and effectiveness established via bench testing, including biocompatibility testing per ISO 10993-1 and performance testing for balloon fill volume and pressure.
Technological Characteristics
Polyurethane balloon and shaft; inflatable via air, saline, or water; stopcock valve connection; non-sterile; single-use; latex-free. Dimensions/form factor designed for vaginal/rectal mucosal contact. Mechanical positioning/stabilization principle.
Indications for Use
Indicated for patients undergoing brachytherapy radiation therapy, x-ray, or CT exams requiring positioning and stabilization of a brachytherapy radiation delivery applicator within the vagina or rectum. Requires placement by a physician-directed healthcare professional.
Regulatory Classification
Identification
A remote controlled radionuclide applicator system is an electromechanical or pneumatic device intended to enable an operator to apply, by remote control, a radionuclide source into the body or to the surface of the body for radiation therapy. This generic type of device may include patient and equipment supports, component parts, treatment planning computer programs, and accessories.
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Image /page/0/Picture/0 description: The image shows the logo for "RADIADYNE". Above the company name is a stylized atom symbol. Below the company name is the phrase "REDEFINING RADIATION THERAPY".
120344
MAY - 3, 2012
# 5. 510(K) Summary
Submission Correspondent
Company Name:
Company Address:
Company Contact:
Country:
Phone:
Fax:
Submission Date:
Website:
Submission Sponsor
Company Name:
Company Address:
Country:
Phone:
Fax:
Website:
Device Classification
Device Trade Name:
Product Classification Name:
Product Code:
Emergo Group, Inc.
611 West 5th Street Third Floor Austin, TX 78701
Stuart R. Goldman Senior Consultant project.management@emergogroup.com
USA
512.327.9997
512.327.9998
January 16, 2012
www.emergogroup.com
RadiaDyne, LLC (Specification Developer)
11931 Wickchester Lane Suite 360 Houston, TX 77043
USA
281.759.9600
281.759.9609
www.radiadyne.com
RadiaPak™ Brachytherapy Applicator Balloon Device System, Applicator, Radionuclide, Remote-Controlled
JAQ
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Image /page/1/Picture/0 description: The image shows the logo for "RADIADYNE REDEFINING RADIATION THERAPY". Above the text is a symbol that looks like three intersecting circles. The text is in all caps and is a sans-serif font.
Image /page/1/Picture/1 description: The image shows the logo for Emergo Group. The logo consists of the words "EMERGO" and "GROUP" in a simple, sans-serif font, with a stylized circular graphic between them. The graphic is black and white and appears to be an abstract representation of a globe or a spiral.
| Regulation Number: | 892.5700 | |
|-----------------------|-----------|--|
| Classification Panel: | Radiology | |
| Regulatory Class: | Class 2 | |
## Predicate Devices
1. Capri™ Applicator (K092822)
2. Alatus® Vaginal Balloon Packing System (K092534)
### Indications for Use
The RadiaPak™ Brachytherapy Applicator Balloon Device is a single use, non-sterile, disposable, inflatable, non-powered positioning device, manufactured without the use of latex, intended to be used on a daily treatment basis to position and stabilize the brachytherapy radiation delivery applicator within the vagina or rectum during brachytherapy radiation therapy procedures, x-ray, or computed tomography (CT) exam. The placement of the balloon device requires a physician directed healthcare professional.
### Device Description
The RadiaPak™ Device is designed to position and stabilize the brachytherapy applicator and to space the applicator surface from the targeted vaginal or rectal mucosa during computed tomography and brachytherapy procedures. The proposed device is a latex free balloon and can be inflated with either air or saline, is provided non-sterile, and is intended for single use.
### Predicate Device Comparison
| Comparison Of<br>RadiaPak™ vs. Alatus® vs. Capri™ Devices | | | |
|-----------------------------------------------------------|------------------------------------------------------------|------------------------------------------------------------|------------------------------------------------------------|
| Device Information | RadiaPak™ | Alatus®<br>(K092534) | Capri™<br>(K092822) |
| Product Code | JAQ | JAQ | JAQ |
| Regulation Number | 892.5700 | 892.5700 | 892.5700 |
| Classification Name | System, applicator,<br>radionuclide, remote-<br>controlled | System, applicator,<br>radionuclide, remote-<br>controlled | System, applicator,<br>radionuclide, remote-<br>controlled |
| Device Material | Polyurethane<br>(balloon/shaft) | Polyurethane<br>(balloon/shaft) | PVC<br>(bulb/lumens) |
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Image /page/2/Picture/0 description: The image shows the logo for Radiadyne, a company that specializes in radiation therapy. The logo features a stylized atom symbol above the company name, which is written in a modern, sans-serif font. Below the company name is the tagline "Redefining Radiation Therapy," which highlights the company's mission and focus.
| Flexible | Yes | Yes | Yes |
|-------------------|--------------------------|--------------------|--------------------------|
| Treatment Area | Vaginal or rectal mucosa | Vaginal mucosa | Vaginal or rectal mucosa |
| Body Contact Area | Mucosal Membrane | Mucosal Membrane | Mucosal Membrane |
| Procedure Time | $≈≤$ 90 minutes | $≈≤$ 90 minutes | $≈≤$ 90 minutes |
| Single Use | Yes | Yes | Yes |
| Supplied Sterile | No | No | Yes |
| Inflatable | Yes | Yes | Yes |
| Pressurized With | Air, saline, water | Air, saline, water | Air or saline |
| Connection Type | Stopcock valve | Stopcock valve | Not applicable |
| Expands | Yes | Yes | Yes |
| Deflates | Yes | Yes | Yes |
## Non-Clinical Data - Biocompatibility & Performance Testing
As part of demonstrating the safety and effectiveness of the RadiaPak™ Device and in showing substantial equivalence to the predicate devices. RadiaDyne performed biocompatibility testing in accordance with ISO 10993-1, as well as performance testing to determine balloon fill volume and fill pressure.
## Clinical Data
RadiaDyne's is not submitting any clinical data in support of its 510(k) submission to the FDA for the RadiaPak™ Device as no such clinical data was submitted by VivaRay for its Capri™ Applicator or by RadiaDyne for its Alatus® Vaginal Balloon Packing System.
### Substantial Equivalence
By definition, a device is substantially equivalent to a predicate device when the device has the same intended use and the same technological characteristics as the previously cleared predicate device, or has the same intended use and different technological characteristics, but it can be demonstrated that the new device is substantially equivalent to the predicate device, and that the new device does not raise different questions regarding its safety and effectiveness compared to the predicate device.
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Image /page/3/Picture/0 description: The image shows the logo for "RADIADYNE REDEFINING RADIATION THERAPY". Above the word RADIADYNE is a symbol that looks like an atom with three rings around it. The words "REDEFINING RADIATION THERAPY" are in smaller font below the word RADIADYNE.
Image /page/3/Picture/1 description: The image shows the logo for EMERGO GROUP. The logo consists of the words "EMERGO" and "GROUP" in a sans-serif font, with a stylized globe symbol in between. The globe symbol is black and white and appears to be made up of curved lines.
lt has been shown in this 510(k) submission that the differences between the RadiaPak™ Brachytherapy Applicator Balloon Device and both the Capri™ Applicator and the Alatus® Vaginal Balloon Packing System do not raise any questions regarding its safety and effectiveness. RadiaDyne's RadiaPak™ Device, as designed and manufactured, is therefore determined to be substantially equivalent to the Capri™ and Alatus® devices previously cleared under K092822 and K092534, respectively.
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Image /page/4/Picture/0 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" arranged around the perimeter. Inside the circle is a stylized image of an eagle with its wings spread, rendered in a simple, abstract design.
## DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room - WO66-G609 Silver Spring, MD 20993-0002
RadiaDyne, LLC % Mr. Stuart R. Goldman Senior Consultant Emergo Group, Inc. 611 West 5th Street, Third Floor AUSTIN TX 78701
MAY - 3 2012
Re: K120344
Trade/Device Name: RadiaPak™ Brachytherapy Applicator Balloon Device Regulation Number: 21 CFR 892.5700 Regulation Name: Remote controlled radionuclide applicator system Regulatory Class: II Product Code: JAQ and IYE Dated: January 16, 2012 Received: February 3, 2012
Dear Mr. Goldman:
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.
If your device is classified (see above) into class II (Special Controls), it may be subject to such additional controls. Existing major regulations affecting your device can be found in Title 21, Code of Federal Regulations (CFR), Parts 800 to 895. 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 or any 1 vith all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801 and 809); medical device reporting (reporting of
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medical device-related adverse events) (21 CFR 803); and good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820). This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Parts 801 and 809), please contact the Office of In Vitro Diagnostic Device Evaluation and Safety at (301) 796-5450. 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
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely Yours, Janine M. Morris
Acting Director Division of Radiological Devices Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health
Enclosure
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## Indications For Use
510(k) Number (if known):
The RadiaPak™ Brachytherapy Applicator Balloon Device is a single use, non-sterile, disposable, inflatable, non-powered positioning device, manufactured without the use of latex, intended to be used on a daily treatment basis to position and stabilize the brachytherapy radiation delivery applicator within the vagina or rectum during brachytherapy radiation therapy procedures, x-ray, or computed tomography (CT) exam. The placement of the balloon device requires a physician directed healthcare professional.
Prescription Use 区
(Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use _
(21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE)
Muht DDK
(Division Sign-Off)
Division of Radiological De Office of In Vitro Diag tion and Selety
K120344
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Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.