510(k) · Cleared
ClearedRadiance 330 Proton Beam Therapy System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Protom International Holding Corporation · LHN System, Radiation Therapy, Charged-Particle, Medical
Cleared on Sep 27, 2019 as substantially equivalent to K134052 (Protom International, Inc., 2014) after a 112-day review. Its family tree reaches back 6 generations to 1988. 2 later devices descend from it.
- Decided
- Sep 27, 2019
- Review
- 112 days
- Class
- Class II
- Product code
- LHN
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 6 generations to K872369 (1988). 10 ancestors in all. 2 later devices descend from it, 1 citing it directly.
- Root · 6 generations backK872369 Loma Linda Univ. Proton Beam Therapy SystemLoma Linda University Medical Center · 1988
- 5 generations backK983024 Proton Therapy SystemIon Beam Applications S.A. · 2001
- 4 generations backK053641 Iba Proton Therapy System-Proteus 235Ion Beam Applications S.A. · 2006
- 3 generations backK060695 Iba Proton Therapy System - Proteus 235Ion Beam Applications S.A. · 2006 · Recalled
- 2 generations backK073059 Probeat with Discrete Spot Scanning SystemHitachi, Ltd., Power Systems Group · 2007 · Recalled
- 1 generation backK134052 Radiance 330 Proton Therapy SystemProtom International, Inc. · 2014
- This deviceK191521 Radiance 330 Proton Beam Therapy SystemProtom International Holding Corporation · 2019
- Descendant · cites it directly · 1 of its ownK221996 P-Cure Proton Beam Therapy SystemP-Cure, Ltd. · 2023
- Descendant · 2 generations on · 0 of its ownK242418 P-Cure Proton Therapy System (PPTS)P-Cure, Ltd. · 2025
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −6 | K872369 | Loma Linda Univ. Proton Beam Therapy System | Loma Linda University Medical Center | 1988 | — |
| −5 | K983024 | Proton Therapy System | Ion Beam Applications S.A. | 2001 | — |
| −4 | K053641 | Iba Proton Therapy System-Proteus 235 | Ion Beam Applications S.A. | 2006 | — |
| −3 | K060695 | Iba Proton Therapy System - Proteus 235 | Ion Beam Applications S.A. | 2006 | 2 |
| −2 | K073059 | Probeat with Discrete Spot Scanning System | Hitachi, Ltd., Power Systems Group | 2007 | 1 |
| −1 | K134052 | Radiance 330 Proton Therapy System | Protom International, Inc. | 2014 | — |
| 0 (this device) | K191521 | Radiance 330 Proton Beam Therapy System | Protom International Holding Corporation | 2019 | — |
| +1 | K221996 | P-Cure Proton Beam Therapy System | P-Cure, Ltd. | 2023 | — |
| +2 | K242418 | P-Cure Proton Therapy System (PPTS) | P-Cure, Ltd. | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2000 | 1 | 0 |
| 2006 | 2 | 0 |
| 2008 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2023 | 1 | 0 |
| 2025 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in LHN? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new LHN device
- #1 K260597 Virtue QAscore 15.4 · 12 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K134052 | Radiance 330 Proton Therapy SystemSummary page 4…Regulatory Class: Class II Product Code: LHN Predicate Devices: ProTom International, Inc. Radiance 330® Proton Therapy System (K134052) Device Description: The ProTom Radiance 330® is a medical device designed to produce and deliver a proton… | 2014 |
What descends from it? (2)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K221996 | P-Cure Proton Beam Therapy System | 2023 | 1 |
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 31 years and passes through 5 companies; a new generation was cleared every 5.5 years on median.
- 3 of the 10 ancestors have a recall of any class.
- Of its descendants, K221996 (P-Cure, Ltd., 2023) has gone furthest, with 1 descendant of its own.
- 1 other device also cites its predicate K134052.
How does its category compare?
All LHN devicesLHN System, Radiation Therapy, Charged-Particle, Medical: FDA decisions, review times, recalls and adverse event reports over 20 years. 2019, this device’s year, is highlighted.
FDA decisions per year · LHN
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · LHN
190in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LHN
1in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LHN
11in 2025
MAUDE reports naming product code LHN, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 2 | — | 2 | 0 |
| 2008 | 3 | 113 | 2 | 1 |
| 2009 | 5 | 69 | 0 | 5 |
| 2010 | 4 | 96 | 0 | 3 |
| 2011 | 1 | — | 0 | 1 |
| 2012 | 3 | 111 | 0 | 1 |
| 2013 | 3 | 70 | 0 | 1 |
| 2014 | 4 | 93 | 2 | 5 |
| 2015 | 3 | 53 | 1 | 2 |
| 2016 | 7 | 120 | 0 | 1 |
| 2017 | 4 | 173 | 5 | 7 |
| 2018 | 3 | 78 | 2 | 8 |
| 2019 | 2 | — | 0 | 3 |
| 2020 | 4 | 74 | 1 | 20 |
| 2021 | 0 | — | 1 | 24 |
| 2022 | 2 | — | 2 | 10 |
| 2023 | 2 | — | 1 | 7 |
| 2024 | 1 | — | 0 | 2 |
| 2025 | 3 | 190 | 0 | 11 |
| 2026 | 4 | 194 | 0 | — |
What is it indicated for?
The ProTom Radiance 330 is a medical device designed to produce and deliver a proton beam for the treatment of patients
with localized tumors and other condition susceptible to treatment by radiation.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K191521 · printed Nov 6, 2026
Cite this page
510(k) Report. “K191521: Radiance 330 Proton Beam Therapy System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K191521
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026