# K913189: Nidek Model NT-1000

- Pathway: 510(k) (Traditional)
- Applicant: Nidek, Inc.
- Decided: Oct 15, 1991 after 89 days
- Product code: HKX (Tonometer, Ac-Powered)
- Device class: 2
- Regulation: 21 CFR 886.1930
- 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; 2 cite it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K113066: Corvis ST (2012), 0 descendants of its own
- K031733: Non-Contact Tonometer, Model NT-4000 (2003), 0 descendants of its own

Source page: https://510kreport.com/device/K913189
Methodology: https://510kreport.com/methodology