# K903923: Usci (R) Silk (TM) Guide Wire

- Pathway: 510(k) (Traditional)
- Applicant: C.R. Bard, Inc.
- Decided: Nov 21, 1990 after 89 days
- Product code: DQX (Wire, Guide, Catheter)
- Device class: 2
- Regulation: 21 CFR 870.1330
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
2 later devices descend from it; 1 cites it directly.
1 of 3 devices in its family (counting itself) has 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
- K063210: Attain Hybrid Guide Wires, Model GWR419378, GWR419388, GWR419478, GWR419488 (2007), 1 descendant of its own
- K143316: Attain Hybrid Guide Wire (2015), 0 descendants of its own

Source page: https://510kreport.com/device/K903923
Methodology: https://510kreport.com/methodology