510(k) · Cleared
ClearedIntegra Radionics Xknife RT 4
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Integra Radionics, Inc. · MUJ System, Planning, Radiation Therapy Treatment
Cleared on Jul 25, 2006 as substantially equivalent to K041997 (Radionics, A Division of Tyco Healthcare Group LP, 2004) after a 22-day review. Its family tree reaches back 6 generations to 1992.
- Decided
- Jul 25, 2006
- Review
- 22 days
- Class
- Class II
- Product code
- MUJ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 6 generations to K914698 (1992). 19 ancestors in all, the oldest K894706 (1989). No later device cites it as a predicate yet.
- Root · 6 generations backK914698 Setup Computer with Software V-1261,62 and 63K.S., Inc. · 1992
- 5 generations backK980904 Mucheck Monitor Unit Validation ProgramMedical Dosimetry Services, Inc. · 1998
- 4 generations backK990833 Dose Calc, Model VS. 1.02Integrity Medical Software, Inc. · 1999
- 3 generations backK993923 Adac PINNACLE3TM Radiation Therapy Planning SystemAdac Laboratories · 2000
- 2 generations backK032724 PINNACLE3 Radiation Therapy Planning SystemAdac Laboratories · 2003 · Recalled
- 1 generation backK041997 Radionics Xknife RT 3 with Non Stereotactic ModuleRadionics, A Division of Tyco Healthcare Group LP · 2004
- This deviceK061893 Integra Radionics Xknife RT 4Integra Radionics, Inc. · 2006
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −6 | K914698 | Setup Computer with Software V-1261,62 and 63 | K.S., Inc. | 1992 | — |
| −5 | K980904 | Mucheck Monitor Unit Validation Program | Medical Dosimetry Services, Inc. | 1998 | — |
| −4 | K990833 | Dose Calc, Model VS. 1.02 | Integrity Medical Software, Inc. | 1999 | — |
| −3 | K993923 | Adac PINNACLE3TM Radiation Therapy Planning System | Adac Laboratories | 2000 | — |
| −2 | K032724 | PINNACLE3 Radiation Therapy Planning System | Adac Laboratories | 2003 | 1 |
| −1 | K041997 | Radionics Xknife RT 3 with Non Stereotactic Module | Radionics, A Division of Tyco Healthcare Group LP | 2004 | — |
| 0 (this device) | K061893 | Integra Radionics Xknife RT 4 | Integra Radionics, Inc. | 2006 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1996 | 1 | 0 |
| 1998 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 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 MUJ? 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 MUJ device
- #1 K232799 syngo.via RT Image Suitescore 18.6 · 19 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 |
|---|---|---|---|
| * | K041997 | Radionics Xknife RT 3 with Non Stereotactic ModuleSummary page 1…ification name is X-ray radiation therapy system. 3.0 The above device is substantial equivalent to the Radionics XKnife RT 3 with Non Stereotactic Module 5 10(k), K041997. 4.0 The above system is a stereotactic treatment planning software with the ability to be used on a Linux workstation, and… | 2004 |
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?
- The line of descent spans 14 years and passes through 6 companies; a new generation was cleared every 1.9 years on median.
- 1 of the 19 ancestors has a recall of any class.
How does its category compare?
All MUJ devicesMUJ System, Planning, Radiation Therapy Treatment: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · MUJ
10in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MUJ
186in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MUJ
2in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · MUJ
21in 2025
MAUDE reports naming product code MUJ, 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 | 4 | 67 | 4 | 24 |
| 2008 | 9 | 63 | 10 | 51 |
| 2009 | 16 | 84 | 11 | 24 |
| 2010 | 11 | 56 | 23 | 78 |
| 2011 | 9 | 103 | 17 | 73 |
| 2012 | 8 | 59 | 4 | 39 |
| 2013 | 5 | 64 | 6 | 33 |
| 2014 | 9 | 108 | 2 | 35 |
| 2015 | 13 | 78 | 7 | 30 |
| 2016 | 5 | 80 | 13 | 27 |
| 2017 | 7 | 30 | 4 | 16 |
| 2018 | 7 | 53 | 3 | 25 |
| 2019 | 9 | 56 | 4 | 25 |
| 2020 | 9 | 104 | 2 | 26 |
| 2021 | 11 | 87 | 4 | 15 |
| 2022 | 8 | 168 | 3 | 22 |
| 2023 | 10 | 140 | 2 | 76 |
| 2024 | 9 | 122 | 0 | 9 |
| 2025 | 10 | 186 | 0 | 21 |
| 2026 | 9 | 233 | 2 | — |
What is it indicated for?
XKnife RT 4 is a radiosurgery and radiotherapy treatment planning system intended for use in stereotactic and non-stereotactic
(frameless), collimated beam, computer planned, LINAC based treatment
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K061893 · printed Nov 4, 2026
Cite this page
510(k) Report. “K061893: Integra Radionics Xknife RT 4.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K061893
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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