510(k) · Cleared
ClearedKlarity Bolus
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Klarity Medical & Equipment (GZ) Co., Ltd. · IYE Accelerator, Linear, Medical
Cleared on May 14, 2021 as substantially equivalent to K993742 (I.Z.I. Corp., 2000) after a 235-day review. Its family tree reaches back 1 generation to 2000.
- Decided
- May 14, 2021
- Review
- 235 days
- Class
- Class II
- Product code
- IYE
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K993742 (2000). No later device cites it as a predicate yet.
- Root · 1 generation backK993742 Super TissueI.Z.I. Corp. · 2000
- This deviceK202747 Klarity BolusKlarity Medical & Equipment (GZ) Co., Ltd. · 2021
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K993742 | Super Tissue | I.Z.I. Corp. | 2000 | — |
| 0 (this device) | K202747 | Klarity Bolus | Klarity Medical & Equipment (GZ) Co., Ltd. | 2021 | — |
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 IYE? 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 IYE device
- #1 K252977 Halcyon, Ethos Radiotherapy System (5.0)score 18.8 · 18 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 |
|---|---|---|---|
| * | K993742 | Super TissueSummary page 4…Regulation Number: 892.5050 Medical charged-particle radiation therapy system III. PREDICATE DEVICE Super Tissue – Bolus Material 510(k) – K993742 IV. DEVICE DESCRIPTION Klarity Bolus is a moldable gel sheet material to be used by trained radiation therapy professional… | 2000 |
What descends from it?
No later submission names this one as a predicate yet.
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?
- Its one ancestor has no recall.
How does its category compare?
All IYE devicesIYE Accelerator, Linear, Medical: FDA decisions, review times, recalls and adverse event reports over 20 years. 2021, this device’s year, is highlighted.
FDA decisions per year · IYE
12in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · IYE
170in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · IYE
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · IYE
101in 2025
MAUDE reports naming product code IYE, 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 | 23 | 44 | 78 | 155 |
| 2008 | 14 | 69 | 49 | 114 |
| 2009 | 20 | 63 | 22 | 174 |
| 2010 | 23 | 74 | 27 | 246 |
| 2011 | 11 | 94 | 73 | 280 |
| 2012 | 28 | 106 | 20 | 128 |
| 2013 | 18 | 88 | 11 | 96 |
| 2014 | 20 | 100 | 14 | 124 |
| 2015 | 20 | 108 | 8 | 100 |
| 2016 | 21 | 97 | 7 | 97 |
| 2017 | 23 | 94 | 7 | 125 |
| 2018 | 21 | 58 | 7 | 85 |
| 2019 | 19 | 83 | 2 | 91 |
| 2020 | 20 | 67 | 4 | 74 |
| 2021 | 19 | 86 | 5 | 68 |
| 2022 | 12 | 172 | 3 | 66 |
| 2023 | 18 | 129 | 7 | 128 |
| 2024 | 9 | 239 | 1 | 81 |
| 2025 | 12 | 170 | 1 | 101 |
| 2026 | 14 | 120 | 4 | — |
What is it indicated for?
Klarity Bolus is indicated for radiation therapy clinical treatments as a tissue equivalent aid to correct for anatomical irregularities and deliver a prescribed dose to the skin and underlying tissue. Target population is Adult, Child and Infant, and Federal (USA) law restricts this device to sale by, or on the order of a physician.
Klarity Bolus has been tested for tissue equivalency at 6 MV and 10 MV photon and at 6 MeV and 12 MeV electron energy levels. Further testing will be required to confirm performance with proton therapy systems.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K202747 · printed Nov 6, 2026
Cite this page
510(k) Report. “K202747: Klarity Bolus.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K202747
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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