# K010821: Echoseed/Iodine-125 Seeds, Model 6733

- Pathway: 510(k) (Special)
- Applicant: Medi-Physics Inc. Dba Nycomed Amersham Imaging
- Decided: Apr 11, 2001 after 23 days
- Product code: KXK (Source, Brachytherapy, Radionuclide)
- Device class: 2
- Regulation: 21 CFR 892.5730
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
7 later devices descend from it; 2 cite it directly.
0 of 8 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
- K013975: CP-Sleeve (2002), 6 descendants of its own
- K034062: CP Sleeve and River Sleeve (2004), 5 descendants of its own
- K103449: Brachytherapy Needles, RP Sleeve, RP Brachy-Spacer, Gold Makers (2011), 3 descendants of its own
- K131689: Mri Marker (2013), 1 descendant of its own
- K171487: Sirius MRI Marker NS (2017), 0 descendants of its own

Source page: https://510kreport.com/device/K010821
Methodology: https://510kreport.com/methodology