# K874555: Keeler Acu 22XT Ophthalmic Cryo Unit

- Pathway: 510(k) (Traditional)
- Applicant: Keeler Instruments, Inc.
- Decided: Jan 29, 1988 after 86 days
- Product code: HPS (Unit, Cryophthalmic)
- Device class: 2
- Regulation: 21 CFR 886.4170
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
7 later devices descend from it; 1 cites it directly.
0 of 8 devices in its family (counting itself) have 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
- K062412: Cryomatic (2006), 6 descendants of its own
- K162756: PHAKOS Disposable Retinal Cryo Probe (2017), 2 descendants of its own
- K131787: Cryomatic Mkii Console, Cryomatic Mkii Probes, Disposable Cryo Probes (2013), 2 descendants of its own
- K180195: Frigitronics adapter (2018), 1 descendant of its own
- K202038: CryoTreQ (2020), 0 descendants of its own

Source page: https://510kreport.com/device/K874555
Methodology: https://510kreport.com/methodology