# K850766: Zimmer Threaded Acetabular Cup

- Pathway: 510(k) (Traditional)
- Applicant: Zimmer, Inc.
- Decided: May 1, 1985 after 65 days
- Product code: KWA (Prosthesis, Hip, Semi-Constrained (Metal Uncemented Acetabular Component))
- Device class: 3
- Regulation: 21 CFR 888.3330
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
13 later devices descend from it; 1 cites it directly.
0 of 14 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
- K112898: Delta TT Cups, Delta TT Liners, Bone Screws (2012), 12 descendants of its own
- K141395: Delta TT Acetabular System (2014), 10 descendants of its own
- K182099: Delta TT Pro (2018), 3 descendants of its own
- K191622: Delta Multihole TT Pro Acetabular System (2019), 2 descendants of its own
- K150855: H-MAX S Femoral Hip System (2015), 2 descendants of its own

Source page: https://510kreport.com/device/K850766
Methodology: https://510kreport.com/methodology