510(k) · Cleared
ClearedZap-X Radiosurgery System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Zap Surgical Systems · IYE Accelerator, Linear, Medical
Cleared on Sep 21, 2017 as substantially equivalent to K150873 (Accuray Incorporated, 2015) after a 94-day review. Its family tree reaches back 1 generation to 2015. 3 later devices descend from it.
- Decided
- Sep 21, 2017
- Review
- 94 days
- Class
- Class II
- Product code
- IYE
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K150873 (2015). 3 later devices descend from it, 1 citing it directly.
- Root · 1 generation backK150873 CyberKnife M6 FI Sytem, CyberKnife M6 FM System, CyberKnife M6 FIM…Accuray Incorporated · 2015 · Recalled
- This deviceK171804 Zap-X Radiosurgery SystemZap Surgical Systems · 2017
- Descendant · cites it directly · 2 of its ownK183698 Zap-X Radiosurgery SystemZap Surgical Systems · 2019
- Descendant · 2 generations on · 1 of its ownK211663 Zap-X Radiosurgical SystemZap Surgical Systems, Inc. · 2021 · Recalled
- Descendant · 3 generations on · 0 of its ownK250392 ZAP-X Radiosurgery System (ZAP-X)Zap Surgical Systems, Inc. · 2025
Most influential descendants
Showing 3 of 3 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K150873 | CyberKnife M6 FI Sytem, CyberKnife M6 FM System, CyberKnife M6 FIM System | Accuray Incorporated | 2015 | 2 |
| 0 (this device) | K171804 | Zap-X Radiosurgery System | Zap Surgical Systems | 2017 | — |
| +1 | K183698 | Zap-X Radiosurgery System | Zap Surgical Systems | 2019 | — |
| +2 | K211663 | Zap-X Radiosurgical System | Zap Surgical Systems, Inc. | 2021 | 2 |
| +3 | K250392 | ZAP-X Radiosurgery System (ZAP-X) | Zap Surgical Systems, Inc. | 2025 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2019 | 1 | 0 |
| 2021 | 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 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 |
|---|---|---|---|
| * | K150873 | CyberKnife M6 FI Sytem, CyberKnife M6 FM System, CyberKnife M6 FIM SystemSummary page 5…Inc. asserts that the Zap-X Radiosurgery System (“Zap-X System”) is substantially equivalent to the predicate device, Accuray CyberKnife M6 Systems, cleared under 510(k) K150873. The Zap-X System and the predicate device are medical charged-particle radiation therapy systems, falling within 21 CFR 892.5050… | 2015 |
| † | K151561 | Leksell Gamma Knife Icon | 2015 |
What descends from it? (3)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K183698 | Zap-X Radiosurgery System | 2019 | 2 |
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?
How does its category compare?
All IYE devicesIYE Accelerator, Linear, Medical: FDA decisions, review times, recalls and adverse event reports over 20 years. 2017, 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?
The Zap-X Radiosurgery System is intended to provide treatment planning and image-guided stereotactic radiosurgery and precision radiotherapy for tumors, lesions and conditions in the brain, head and neck when radiation treatment is indicated.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K171804 · printed Nov 6, 2026
Cite this page
510(k) Report. “K171804: Zap-X Radiosurgery System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K171804
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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