# K162104: C-Flex Ureteral Stent Set

- Pathway: 510(k) (Traditional)
- Applicant: Cook Incorporated
- Decided: Apr 24, 2017 after 269 days
- Product code: FAD (Stent, Ureteral)
- Device class: 2
- Regulation: 21 CFR 876.4620
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 5 generations back to K903345 (1991). 9 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 11 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K151051: Universa Soft Ureteral Stents and Stent Sets, Cook Incorporated (2016) Summary page 4.
- K033210: Bioteq Double Pigtail Ureteral Stent Set, Bioteque Corp. (2004) Summary page 4.

## Most influential descendants
- K180053: Sof-Flex Ureteral Stent Set (2018), 0 descendants of its own

## Indications for use
The C-Flex Ureteral Stent Sets are intended for temporary internal drainage from the ureteropelvic junction to the bladder. Ureteral stents have been used to relieve obstruction in a variety of benign, malignant, and post-traumatic conditions. The stents may be placed using endoscopic, percutaneous, or open surgical techniques. The 3.7 French C-Flex stents are indicated for pediatric patients.

Source page: https://510kreport.com/device/K162104
Methodology: https://510kreport.com/methodology