Devices descending from K990423
6 later devices reach Philips Nicol Collimator Family through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K031597 | Dunlee Format Collimator Family | Philips Medical Systems North America Co. | 2003 | 5 | — |
| +2 | K093572 | R650 Qdasm Collimator | Omega Medical Imaging, Inc. | 2010 | 0 | — |
| +2 | K050092 | R605 Facs Collimeter | Omega Medical Imaging, Inc. | 2005 | 4 | — |
| +3 | K083029 | Model R605DASM Automatic X-Ray Collimator | Ralco S.R.L. | 2008 | 0 | — |
| +3 | K072780 | Model R302DACS/a Automatic X-Ray Collimator | Ralco S.R.L. | 2007 | 2 | — |
| +4 | K091517 | Ralco, Model R225 Acs | Ralco S.R.L. | 2009 | 0 | — |