Devices descending from K961904
17 later devices reach AQ Hydrophilic Dilators through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K173654 | Ureteral Dilator Sets, Ureteral Dilators | Cook Incorporated | 2018 | 0 | — |
| +1 | K170531 | Ureteral Dilators and Percutaneous Nephrostomy Dilators | Coloplast Corp. | 2017 | 1 | 1 |
| +1 | K043418 | Cook Pediatric Flexor Ureteral Access Shealth | Cook Urological, Inc. | 2005 | 4 | 1 |
| +1 | K990808 | PBN Dilators | Medical Device Technologies, Inc. | 1999 | 2 | — |
| +1 | K981611 | Snap-N-Peel Introducers | Circon Corp. | 1998 | 6 | — |
| +2 | K250448 | Disposable Percutaneous Nephrostomy Dilatation Kit | Shenzhen Trious Medical Technology Co., Ltd. | 2025 | 0 | — |
| +2 | K183036 | Dilator Sets | Cook Incorporated | 2018 | 1 | 3 |
| +2 | K172217 | Flexor Ureteral Access Sheath and Flexor Parallel Rapid Release Ureteral Access Sheath | Cook Incorporated | 2017 | 2 | — |
| +2 | K123170 | Vari-Pass Variable Length Access Sheath | Olympus Surgical Technologies America | 2013 | 1 | — |
| +2 | K072521 | Cook Fiber Optic Bundle and Flexor Deflecting Access Sheath | Cook Urological, Inc. | 2007 | 0 | 1 |
| +2 | K051593 | Uropass Ureteral Access Sheath, Model 61224 | Acmi Corporation | 2005 | 5 | 2 |
| +3 | K250132 | Ureteral Access Sheath | Zhejiang YiGao Medical Technology Co., Ltd. | 2025 | 0 | — |
| +3 | K210734 | Endovascular Dilator and Sets | Cook Incorporated | 2021 | 0 | — |
| +3 | K182403 | Peel-Away Introducer | Cook Incorporated | 2019 | 0 | — |
| +3 | K120160 | Rocamed Rocaus Platinum | Promepla Sam | 2012 | 2 | — |
| +4 | K140441 | BI-Flex Ureteral Access Sheath | Promepla Sam | 2014 | 1 | — |
| +5 | K182144 | Bi-Flex Evo | Promepla Sam | 2018 | 0 | — |