510(k) · Cleared
ClearedMagnetic Resonance Therapy Device
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Mrt, Inc. · ILX Diathermy, Shortwave, For Use Other Than Applying Therapeutic Deep Heat
Cleared on Jan 17, 1991 after a 157-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 11 later devices descend from it.
- Decided
- Jan 17, 1991
- Review
- 157 days
- Class
- Class II
- Product code
- ILX
- Recalls
- None
- Predicates
- 0
11 later devices descend from it, 3 citing it directly.
- This deviceK903675 Magnetic Resonance Therapy DeviceMrt, Inc. · 1991
- Descendant · cites it directly · 8 of its ownK070541 Ivivi Sofpulse, Models 912-M10, ROMA3 and Torino IIIvivi Technologies, Inc. · 2008
- Descendant · 2 generations on · 3 of its ownK092044 Orthocor Knee System, Median, Large, X-LargeOrthocor Medical · 2009
- Descendant · 2 generations on · 2 of its ownK091996 Orthocor Knee System BasicOrthocor Medical · 2009
- Descendant · 2 generations on · 1 of its ownK152432 ActiPatch (R)Bioelectronics Corporation · 2017
- Descendant · 3 generations on · 1 of its ownK121702 Orthocor Active Device Orthocor General Use Active DeviceOrthocor Medical · 2013
Showing 5 of 11 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 11 · See all- K070541Ivivi Sofpulse, Models 912-M10, ROMA3 and Torino IIIvivi Technologies, Inc. · 2008 · cites it directly8descendants
- K092044Orthocor Knee System, Median, Large, X-LargeOrthocor Medical · 2009 · 2 generations on3descendants
- K091996Orthocor Knee System BasicOrthocor Medical · 2009 · 2 generations on2descendants
- K152432ActiPatch (R)Bioelectronics Corporation · 2017 · 2 generations on1descendant
- K121702Orthocor Active Device Orthocor General Use Active DeviceOrthocor Medical · 2013 · 3 generations on1descendant
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K903675 | Magnetic Resonance Therapy Device | Mrt, Inc. | 1991 | — |
| +1 | K070541 | Ivivi Sofpulse, Models 912-M10, ROMA3 and Torino II | Ivivi Technologies, Inc. | 2008 | — |
| +2 | K092044 | Orthocor Knee System, Median, Large, X-Large | Orthocor Medical | 2009 | — |
| +2 | K091996 | Orthocor Knee System Basic | Orthocor Medical | 2009 | — |
| +2 | K152432 | ActiPatch (R) | Bioelectronics Corporation | 2017 | — |
| +3 | K121702 | Orthocor Active Device Orthocor General Use Active Device | Orthocor Medical | 2013 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1997 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2017 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2024 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in ILX? 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 ILX device
- #1 K241395 Active System; Avenue8score 9.4 · 4 generations · no Class I recall
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (11)
See all 113 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?
- Of its descendants, K070541 (Ivivi Technologies, Inc., 2008) has gone furthest, with 8 descendants of its own.
How does its category compare?
All ILX devicesILX Diathermy, Shortwave, For Use Other Than Applying Therapeutic Deep Heat: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · ILX
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · ILX
Too few ILX 510(k)s in any year since 2007 to give a median.
Recalls per year · ILX
1in 2008
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · ILX
1in 2025
MAUDE reports naming product code ILX, 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 | 1 | — | 0 | 1 |
| 2008 | 1 | — | 1 | 2 |
| 2009 | 2 | — | 0 | 1 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 1 |
| 2012 | 1 | — | 0 | 0 |
| 2013 | 2 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 1 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 1 |
| 2024 | 1 | — | 0 | 0 |
| 2025 | 0 | — | 0 | 1 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K903675 · printed Nov 5, 2026
Cite this page
510(k) Report. “K903675: Magnetic Resonance Therapy Device.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K903675
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026