Elekta Synergy, Elekta Harmony, Elekta Infinity, Versa HD
K210500 · Elekta Limited · IYE · Jun 11, 2021 · Radiology
Device Facts
Record ID
K210500
Device Name
Elekta Synergy, Elekta Harmony, Elekta Infinity, Versa HD
Applicant
Elekta Limited
Product Code
IYE · Radiology
Decision Date
Jun 11, 2021
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.5050
Device Class
Class 2
Attributes
Therapeutic, Pediatric
Indications for Use
The Elekta Medical Linear Accelerator (EMLA) is intended to be used for external beam radiation therapy (EBRT) treatments as determined by a licensed medical practitioner. It is intended to assist a licensed medical practitioner in the delivery of EBRT to defined target volumes, while sparing surrounding normal tissue and critical organs from excess radiation. - Elekta Synergy and Elekta Harmony are the default entry-level configurations. It is intended to be used for single or multiple fractions using standard dose fractionation, hyperfractionation, and hypofractionation in all areas of the body where such treatment is indicated. - Elekta Infinity is the default mid-level configurations. It is intended to be used for single or multiple fractions using standard dose fractionation, hyperfractionation, hypofractionation and stereotactic delivery (stereotactic body radiation therapy -SBRT; stereotactic ablative radiotherapy – SABR) in all areas of the body where such treatment is indicated. - Versa HD is the default high-level configuration. It is intended to be used for single or multiple fractions using standard fractionation, hyperfractionation, hypofractionation and stereotactic delivery (stereotactic body radiation therapy - SBRT; stereotactic ablative radiotherapy – SABR; stereotactic radio surgery - SRS) in all areas of the body where such treatment is indicated and for the treatment of functional disorders, such as trigeminal neuralgia. The EMLA is indicated for the delivery of curative and palliative intent EBRT to Adult and Pediatric patients with primary benign and malignant tumor and metastasis (or secondaries) anywhere in the body.
Device Story
EMLA is an image-guided radiation therapy system delivering ionizing radiation to defined target volumes. System components include a linear accelerator, beam shaping hardware, patient positioning table, and imaging subsystems (MV iViewGT, optional kV XVI). Operated by clinicians in a treatment room/control room environment. Inputs include patient positioning data and treatment plans; system transforms these into controlled photon (4–25 MV) or electron (4–22 MeV) beams. Output is therapeutic radiation dose. Device assists practitioners in sparing normal tissue/critical organs. Benefits include precise tumor targeting for curative/palliative care.
Clinical Evidence
No clinical data provided. Evidence consists of bench testing, including subsystem, integration, and system-level verification and validation activities performed in accordance with design controls (21 CFR 820.30), ISO 13485, ISO 14971, and IEC 62304. Formal validation of clinical workflows was conducted on a production-equivalent system.
Technological Characteristics
Medical charged-particle radiation therapy system. Photon energies 4–25 MV; electron energies 4–22 MeV. Features beam shaping, MV portal imaging (iViewGT), and optional kV imaging (XVI). Patient support system allows motorized linear movement (longitudinal, lateral, vertical) and manual rotation. Software developed to IEC 62304 Class C standards. System is networked for clinical workflow integration.
Indications for Use
Indicated for curative and palliative external beam radiation therapy (EBRT) in adult and pediatric patients with primary benign or malignant tumors and metastases anywhere in the body. Specific configurations support standard fractionation, hyperfractionation, hypofractionation, stereotactic body radiation therapy (SBRT), stereotactic ablative radiotherapy (SABR), stereotactic radiosurgery (SRS), and treatment of functional disorders like trigeminal neuralgia.
Regulatory Classification
Identification
A medical charged-particle radiation therapy system is a device that produces by acceleration high energy charged particles (e.g., electrons and protons) intended for use in radiation therapy. This generic type of device may include signal analysis and display equipment, patient and equipment supports, treatment planning computer programs, component parts, and accessories.
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June 11, 2021
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Elekta Limited % Mr. Lorenzo Muratori Regulatory Affairs and Compliance Engineer Linac House, Fleming Way Crawley, West Sussex RH10 9RR UNITED KINGDOM
## Re: K210500
Trade/Device Name: Elekta Synergy, Elekta Harmony, Elekta Infinity, Versa HD Regulation Number: 21 CFR 892.5050 Regulation Name: Medical charged-particle radiation therapy system Regulatory Class: Class II Product Code: IYE, Dated: February 18, 2021 Received: February 22, 2021
Dear Mr. Muratori:
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 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for
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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 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.
For
Thalia T. Mills, Ph.D. Director Division of Radiological Health OHT7: Office of In Vitro Diagnostics and Radiological Health 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) K210500
Device Name Elekta Medical Linear Accelerator
### Indications for Use (Describe)
The Elekta Medical Linear Accelerator (EMLA) is intended to be used for external beam radiation therapy (EBRT) treatments as determined by a licensed medical practitioner.
It is intended to assist a licensed medical practitioner in the defined target volumes, while sparing surrounding normal tissue and critical organs from excess radiation.
-Elekta Synergy and Elekta Harmony are the default entry-level configurations. They are intended to be used for single or multiple fractions using standard dose fractionation, and hypofractionation in all areas of the body where such treatment is indicated.
-Elekta Infinity is the default mid-level configuration. It is intended to be used for single or multiple fractions using standard dose fractionation, hypofractionation and stereotactic delivery (stereotactic body radiation therapy - SBRT; stereotactic ablative radiotherapy - SABR) in all areas of the body where such treatment is indicated.
-Versa HD is the default high-level configuration. It is intended to be used for single or multiple fractions using standard fractionation, hyperfractionation and stereotactic delivery (stereotactic body radiation therapy - SBRT; stereotactic ablative radiotherapy – SABR; stereotactic radio surgery - SRS) in all areas of the body where such treatment is indicated and for the treatment of functional disorders, such as trigeminal neuralgia.
The EMLA is indicated for the delivery of curative and palliative intent EBRT to Adult and Pediatic with primary benign and malignant tumor and metastasis (or secondaries) anywhere in the body.
Type of Use (Select one or both, as applicable)
| Prescription Use (Part 21 CFR 801 Subpart D) | <b>X</b> |
|----------------------------------------------|----------|
| Over-The-Counter Use (21 CFR 801 Subpart C) | |
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### TRADITIONAL 510(k) SUMMARY K210500
The following information follows the format of 21 CFR 807.92
| I. | SUBMITTER | |
|------|----------------------|-------------------------------------------------------------------------------------------------------------------------------|
| | Date of preparation: | 18 February 2021 |
| | Submitted by: | Elekta Limited<br>Linac House, Fleming Way, Crawley, West Sussex<br>RH10 9RR, United Kingdom<br>Telephone: +44 (0)1293 654836 |
| | Contact name: | Lorenzo Muratori |
| II. | DEVICE | |
| | Trade Name: | Elekta Synergy ®, Elekta Harmony™, Elekta Infinity™,<br>Versa HD™ |
| | Common Name: | Elekta Medical Linear Accelerator (ELMA) |
| | Classification Name: | Medical Charged-Particle Radiation Therapy System<br>Accelerator, Linear, Medical, 21CFR 892.5050 |
| | Product Code: | IYE |
| III. | PREDICATE DEVICE | K192242 |
#### IV. DEVICE DESCRIPTION
The Elekta Medical Linear Accelerator (EMLA) system is an image guided Radiation Therapy device to assist a licensed practitioner in the delivery of ionizing radiation to a defined target volume. The system consists of components of the accelerator, such as, beam shaping, with imaging and accessories for patient positioning and set-up to deliver therapeutic treatments. The Elekta Harmony being introduced with this premarket notification submission.
The EMLA offers multiple treatment modalities including photon energies in the range of 4 – 25 MV and electron energies in the range of 4 – 22 MeV. Un-flattened and flattened photon energies are available. A treatment table, located in the treatment room, allows the patient to be accurately positioned to receive the prescribed radiotherapy and supports the patient during treatment. The table is capable of linear and rotational movements. The EMLA is equipped with a MV portal imaging subsystem, i.e. iViewGT, and an optional kV imaging sub-system, i.e. XVI. The user interface controlling devices are located partly in the treatment room and partly in the control room.
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#### V. INTENDED USE / INDICATION FOR USE STATEMENT
The Elekta Medical Linear Accelerator (EMLA) is intended to be used for external beam radiation therapy (EBRT) treatments as determined by a licensed medical practitioner.
It is intended to assist a licensed medical practitioner in the delivery of EBRT to defined target volumes, while sparing surrounding normal tissue and critical organs from excess radiation.
- Elekta Synergy and Elekta Harmony are the default entry-level configurations. It is intended to be used for single or multiple fractions using standard dose fractionation, hyperfractionation, and hypofractionation in all areas of the body where such treatment is indicated.
- Elekta Infinity is the default mid-level configurations. It is intended to be used for single or multiple fractions using standard dose fractionation, hyperfractionation, hypofractionation and stereotactic delivery (stereotactic body radiation therapy -SBRT; stereotactic ablative radiotherapy – SABR) in all areas of the body where such treatment is indicated.
- Versa HD is the default high-level configuration. It is intended to be used for single or multiple fractions using standard fractionation, hyperfractionation, hypofractionation and stereotactic delivery (stereotactic body radiation therapy - SBRT; stereotactic ablative radiotherapy – SABR; stereotactic radio surgery - SRS) in all areas of the body where such treatment is indicated and for the treatment of functional disorders, such as trigeminal neuralgia.
The EMLA is indicated for the delivery of curative and palliative intent EBRT to Adult and Pediatric patients with primary benign and malignant tumor and metastasis (or secondaries) anywhere in the body.
#### VI. SUMMARY OF TECHNOLOGICAL CHARACTERISTICS
The vast majority of technological characteristics are the same, however, there are some changes. All the changes are to be considered minor in respect of the complexity of technology employed in the EMLA.
The Elekta Harmony variant features improved user interface controls in the treatment room, a patient support system capable of motorized linear movement along the longitudinal, lateral and vertical directions and manual movement around the column axis, but it does not support the motorized rotational movement around the isocentre axis as the predicate device does. The Elekta Harmony model can be installed in a bunker up to 500cm smaller than the other models of the EMLA family. The Elekta Harmony imaging device panels are permanently deployed, while those of the predicate device are foldable.
There are no novel forms of technology introduced in this premarket notification.
#### VII. SUMMARY OF PERFORMANCE TESTING (NON-CLINICAL)
Development, verification and validation activities for the modified system were carried out in accordance with design controls as required by FDA's Quality System Regulation (21 CFR §820.30), applicable ISO 13485 Quality Management System requirements, ISO 14971 Risk Management requirements, and IEC 62304 requirements for software life-cycle processes. Non-clinical testing was performed to
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evaluate device performance and functionality in accordance with design and risk management requirements at subsystem, integration and system levels including interoperability. This includes the essential performance defined by Elekta. Basic safety and essential performance of the individual subsystems and the integrated EMLA system have been satisfied through conformance with the applicable general, particular and collateral safety and essential performance standards for medical devices.
Documentation of software development and verification testing activities for each subsystem of the EMLA system is maintained in accordance with FDA's "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices," May 2005, for devices that pose a major level of concern (Class C per IEC 62304).
Formal validation of the clinical workflows has been performed on a clinically representative production equivalent system by competent and professionally qualified personnel.
#### VIII. CONCLUSION DRAWN FROM TESTS
The verification and validation non-clinical test results demonstrate compliance with the applicable consensus standards and that the functional and performance requirements defined by Elekta are met. We therefore conclude that the device is as safe, as effective, and performs as well as or better than the legally marketed device.
#### IX. SUBSTANTIAL EQUIVALENCE
Elekta Harmony is substantially equivalent to the predicate devices cleared under K192242 in intended use and indications for use, principles of operation, technological characteristics, performance, and labelling.
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.