# K903675: Magnetic Resonance Therapy Device

- Pathway: 510(k) (Traditional)
- Applicant: Mrt, Inc.
- Decided: Jan 17, 1991 after 157 days
- Product code: ILX (Diathermy, Shortwave, For Use Other Than Applying Therapeutic Deep Heat)
- Device class: 2
- Regulation: 21 CFR 890.5290
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
11 later devices descend from it; 3 cite it directly.
0 of 12 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K070541: Ivivi Sofpulse, Models 912-M10, ROMA3 and Torino II (2008), 8 descendants of its own
- K092044: Orthocor Knee System, Median, Large, X-Large (2009), 3 descendants of its own
- K091996: Orthocor Knee System Basic (2009), 2 descendants of its own
- K152432: ActiPatch (R) (2017), 1 descendant of its own
- K121702: Orthocor Active Device Orthocor General Use Active Device (2013), 1 descendant of its own

Source page: https://510kreport.com/device/K903675
Methodology: https://510kreport.com/methodology