510(k) · Cleared
ClearedPeacock Plan
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Nomos Corp. · IYE Accelerator, Linear, Medical
Cleared on Apr 9, 1996 as substantially equivalent to K884261 (Small Systems Group, Inc., 1989) and 2 other predicates after a 781-day review. Its family tree reaches back 1 generation to 1989. 57 later devices descend from it.
- Decided
- Apr 9, 1996
- Review
- 781 days
- Class
- Class II
- Product code
- IYE
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 1 generation to K884261 (1989). 3 ancestors in all. 57 later devices descend from it, 7 citing it directly.
- Root · 1 generation backK884261 Prowess 2000Small Systems Group, Inc. · 1989
- This deviceK940663 Peacock PlanNomos Corp. · 1996
- Descendant · cites it directly · 27 of its ownK984532 Cadplan Helios Option 6.0Varian Medical Systems, Inc. · 1999
- Descendant · cites it directly · 24 of its ownK993766 Helax-TMS V 5.0 Radiation Therapy Treatment Planning SystemHelax AB · 1999
- Descendant · 2 generations on · 23 of its ownK010682 Helax-TMS V 5.1 Radiation Therapy Treatment Planning SystemMds Nordion · 2001
- Descendant · 3 generations on · 22 of its ownK020971 DCM 2.0Mds Nordion AB · 2002
- Descendant · 4 generations on · 21 of its ownK130617 RaystationRaysearch Laboratories AB · 2013 · Recalled
Showing 5 of 57 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 57 · See all- K984532Cadplan Helios Option 6.0Varian Medical Systems, Inc. · 1999 · cites it directly27descendants
- K993766Helax-TMS V 5.0 Radiation Therapy Treatment Planning SystemHelax AB · 1999 · cites it directly24descendants
- K010682Helax-TMS V 5.1 Radiation Therapy Treatment Planning SystemMds Nordion · 2001 · 2 generations on23descendants
- K020971DCM 2.0Mds Nordion AB · 2002 · 3 generations on22descendants
- K130617RaystationRaysearch Laboratories AB · 2013 · 4 generations on21descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K884261 | Prowess 2000 | Small Systems Group, Inc. | 1989 | — |
| 0 (this device) | K940663 | Peacock Plan | Nomos Corp. | 1996 | — |
| +1 | K984532 | Cadplan Helios Option 6.0 | Varian Medical Systems, Inc. | 1999 | — |
| +1 | K993766 | Helax-TMS V 5.0 Radiation Therapy Treatment Planning System | Helax AB | 1999 | — |
| +2 | K010682 | Helax-TMS V 5.1 Radiation Therapy Treatment Planning System | Mds Nordion | 2001 | — |
| +3 | K020971 | DCM 2.0 | Mds Nordion AB | 2002 | — |
| +4 | K130617 | Raystation | Raysearch Laboratories AB | 2013 | 6 |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 3 | 0 |
| 2013 | 1 | 0 |
| 2014 | 4 | 0 |
| 2015 | 4 | 0 |
| 2016 | 2 | 0 |
| 2017 | 3 | 0 |
| 2018 | 4 | 0 |
| 2019 | 2 | 0 |
| 2020 | 3 | 0 |
| 2021 | 5 | 0 |
| 2022 | 3 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
| 2026 | 3 | 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? (3)
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 |
|---|---|---|---|
| * | K884261 | Prowess 2000Summary page 1…inical Affairs NOMOS Corporation (NOMOS) 2593 Wexford Bayne Road Sewickley, PA 15143 (412)-934-5477 . Name of predicate device(s): 1.Small Systems Group: Prowess 2000, K884261/A/B 2.GE Target Series 2, K896353 3.University of Michigan/Scanditronix: Scandiplan K903403 . Classification: Radiation Therap… | 1989 |
| * | K896353 | GE Target Series 2Summary page 1…OMOS) 2593 Wexford Bayne Road Sewickley, PA 15143 (412)-934-5477 . Name of predicate device(s): 1.Small Systems Group: Prowess 2000, K884261/A/B 2.GE Target Series 2, K896353 3.University of Michigan/Scanditronix: Scandiplan K903403 . Classification: Radiation Therapy Simulation Systems were reviewed… | 1989 |
| * | K903403 | CT-Compatible Fletcher System ApplicatorSummary page 1…34-5477 . Name of predicate device(s): 1.Small Systems Group: Prowess 2000, K884261/A/B 2.GE Target Series 2, K896353 3.University of Michigan/Scanditronix: Scandiplan K903403 . Classification: Radiation Therapy Simulation Systems were reviewed by the Radiological Devices Classification Panel and place… | 1990 |
| † | K841997 | CT 9800 | 1984 |
| † | K910859 | Computerized Tomography X-Ray System | 1991 |
What descends from it? (57)
See all 577 later devices cite it directly; ranked here by how many devices descend from each in turn.
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?
- None of the 3 ancestors has a recall.
- Of its descendants, K984532 (Varian Medical Systems, Inc., 1999) has gone furthest, with 27 descendants of its own.
How does its category compare?
All IYE devicesIYE Accelerator, Linear, Medical: FDA decisions, review times, recalls and adverse event reports over 20 years.
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 indications for the NOMOS Peacock Plan are the same as those for the predicate devices with external beam radiation: Present a graphical display of the resultant dose distribution around a target which is based upon the size, shape and position of the radiation treatment fields.
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/K940663 · printed Nov 6, 2026
Cite this page
510(k) Report. “K940663: Peacock Plan.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K940663
Report an extraction error
Are you the manufacturer?
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