510(k) · Cleared
ClearedEndoprosthesis System, Vario-Head
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Waldemar Link GmbH & Co. KG · KWY Prosthesis, Hip, Hemi-, Femoral, Metal/Polymer, Cemented Or Uncemented
Cleared on Oct 24, 1978 after a 12-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 1 later device descends from it.
- Decided
- Oct 24, 1978
- Review
- 12 days
- Class
- Class II
- Product code
- KWY
- Recalls
- None
- Predicates
- 0
1 later device descends from it, 1 citing it directly.
- This deviceK781735 Endoprosthesis System, Vario-HeadWaldemar Link GmbH & Co. KG · 1978
- Descendant · cites it directly · 0 of its ownK221794 Vario-Cup SystemWaldemar Link GmbH & Co. KG · 2022
Most influential descendants
Showing 1 of 1 · See all- K221794Vario-Cup SystemWaldemar Link GmbH & Co. KG · 2022 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K781735 | Endoprosthesis System, Vario-Head | Waldemar Link GmbH & Co. KG | 1978 | — |
| +1 | K221794 | Vario-Cup System | Waldemar Link GmbH & Co. KG | 2022 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2022 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in KWY? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new KWY device
- #1 K253357 b-ONE® Bipolar Headscore 11.2 · 1 generation · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K221794 | Vario-Cup System | 2022 | 0 |
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K221794 (Waldemar Link GmbH & Co. KG, 2022) has gone furthest, with 0 descendants of its own.
How does its category compare?
All KWY devicesKWY Prosthesis, Hip, Hemi-, Femoral, Metal/Polymer, Cemented Or Uncemented: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · KWY
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · KWY
126in 2019
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KWY
2in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KWY
180in 2025
MAUDE reports naming product code KWY, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 0 | — | 25 | 370 |
| 2008 | 3 | 123 | 0 | 900 |
| 2009 | 1 | — | 24 | 961 |
| 2010 | 4 | 187 | 1 | 688 |
| 2011 | 1 | — | 0 | 758 |
| 2012 | 1 | — | 1 | 978 |
| 2013 | 2 | — | 2 | 1,148 |
| 2014 | 1 | — | 0 | 1,055 |
| 2015 | 1 | — | 0 | 1,213 |
| 2016 | 1 | — | 3 | 877 |
| 2017 | 1 | — | 2 | 826 |
| 2018 | 3 | 219 | 1 | 1,380 |
| 2019 | 5 | 126 | 1 | 1,530 |
| 2020 | 1 | — | 0 | 1,259 |
| 2021 | 0 | — | 0 | 276 |
| 2022 | 2 | — | 0 | 208 |
| 2023 | 2 | — | 0 | 178 |
| 2024 | 0 | — | 1 | 209 |
| 2025 | 1 | — | 2 | 180 |
| 2026 | 1 | — | 0 | — |
https://510kreport.com/device/K781735 · printed Nov 4, 2026
Cite this page
510(k) Report. “K781735: Endoprosthesis System, Vario-Head.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K781735
Report an extraction error
Are you the manufacturer?
Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026