510(k) · Cleared
Recalled · Class II · 2022Biostop G Bone Cement Restrictor
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Landos, Inc. · LZN Cement Obturator
Cleared on May 11, 1995 after a 282-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 27 later devices descend from it. It has been recalled once.
- Decided
- May 11, 1995
- Review
- 282 days
- Class
- Class II
- Product code
- LZN
- Recalls
- 1
- Predicates
- 0
27 later devices descend from it, 2 citing it directly.
- This deviceK943727 Biostop G Bone Cement RestrictorLandos, Inc. · 1995
- Descendant · cites it directly · 25 of its ownK982918 Depuy C-Stem SystemDePuy Orthopaedics, Inc. · 1998
- Descendant · 2 generations on · 23 of its ownK042959 Depuy C-Stem Amt Hip ProsthesisDePuy Orthopaedics, Inc. · 2004
- Descendant · 3 generations on · 14 of its ownK082239 Depuy C-Stem AmtDePuy Orthopaedics, Inc. · 2008
- Descendant · 2 generations on · 14 of its ownK013350 Modification to Depuy C-Stem SystemDePuy Orthopaedics, Inc. · 2001
- Descendant · 2 generations on · 8 of its ownK220216 C-Stem AMT LE ProsthesisDepuy Ireland UC · 2022
Showing 5 of 27 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 27 · See all- K982918Depuy C-Stem SystemDePuy Orthopaedics, Inc. · 1998 · cites it directly25descendants
- K042959Depuy C-Stem Amt Hip ProsthesisDePuy Orthopaedics, Inc. · 2004 · 2 generations on23descendants
- K082239Depuy C-Stem AmtDePuy Orthopaedics, Inc. · 2008 · 3 generations on14descendants
- K013350Modification to Depuy C-Stem SystemDePuy Orthopaedics, Inc. · 2001 · 2 generations on14descendants
- K220216C-Stem AMT LE ProsthesisDepuy Ireland UC · 2022 · 2 generations on8descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K943727 | Biostop G Bone Cement Restrictor | Landos, Inc. | 1995 | — |
| +1 | K982918 | Depuy C-Stem System | DePuy Orthopaedics, Inc. | 1998 | — |
| +2 | K042959 | Depuy C-Stem Amt Hip Prosthesis | DePuy Orthopaedics, Inc. | 2004 | — |
| +3 | K082239 | Depuy C-Stem Amt | DePuy Orthopaedics, Inc. | 2008 | — |
| +2 | K013350 | Modification to Depuy C-Stem System | DePuy Orthopaedics, Inc. | 2001 | — |
| +2 | K220216 | C-Stem AMT LE Prosthesis | Depuy Ireland UC | 2022 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1998 | 1 | 0 |
| 2001 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2008 | 1 | 0 |
| 2016 | 3 | 0 |
| 2017 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 3 | 0 |
| 2023 | 3 | 0 |
| 2024 | 2 | 0 |
| 2025 | 5 | 0 |
| 2026 | 2 | 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 LZN? 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 LZN device
- #1 K220838 Artisan Bone Plug, Universal Cement Restrictorscore 11.8 · 9 generations · no Class I recall
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? (27)
See all 272 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Dec 19, 2022 | Class II | Z-0951-2023 | Process control | All lots of BIOSTOP G Bioresorbable Cement Restrictor are being removed as a precautionary measure because tested endotoxin levels were higher than recommended by the current FDA regulatory guidance. In general, endotoxins have a… |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K982918 (DePuy Orthopaedics, Inc., 1998) has gone furthest, with 25 descendants of its own.
How does its category compare?
All LZN devicesLZN Cement Obturator: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · LZN
1in 2022
2026 to Oct 25, outlined.
Median 510(k) review, days · LZN
Too few LZN 510(k)s in any year since 2007 to give a median.
Recalls per year · LZN
1in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LZN
6in 2025
MAUDE reports naming product code LZN, 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 | — | 0 | 1 |
| 2008 | 0 | — | 0 | 2 |
| 2009 | 0 | — | 0 | 3 |
| 2010 | 0 | — | 0 | 7 |
| 2011 | 0 | — | 0 | 3 |
| 2012 | 0 | — | 0 | 13 |
| 2013 | 0 | — | 0 | 4 |
| 2014 | 0 | — | 0 | 30 |
| 2015 | 0 | — | 0 | 41 |
| 2016 | 0 | — | 0 | 6 |
| 2017 | 0 | — | 0 | 6 |
| 2018 | 0 | — | 0 | 8 |
| 2019 | 0 | — | 0 | 11 |
| 2020 | 0 | — | 0 | 11 |
| 2021 | 0 | — | 0 | 12 |
| 2022 | 1 | — | 1 | 6 |
| 2023 | 0 | — | 0 | 13 |
| 2024 | 0 | — | 0 | 7 |
| 2025 | 0 | — | 0 | 6 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K943727 · printed Nov 6, 2026
Cite this page
510(k) Report. “K943727: Biostop G Bone Cement Restrictor.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K943727
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