510(k) · Cleared
Recalled · Class II · 2013Sigma Delta
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Penlon, Ltd. · CAD Vaporizer, Anesthesia, Non-Heated
Cleared on Jun 8, 2001 after a 311-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 2 later devices descend from it. It has been recalled once.
- Decided
- Jun 8, 2001
- Review
- 311 days
- Class
- Class II
- Product code
- CAD
- Recalls
- 1
- Predicates
- 0
2 later devices descend from it, 2 citing it directly.
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K002343 | Sigma Delta | Penlon, Ltd. | 2001 | — |
| +1 | K140264 | MADM | Thornhill Research, Inc. | 2015 | — |
| +1 | K060331 | Sigma Alpha Vaporizer | Penlon Limited | 2006 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2006 | 1 | 0 |
| 2015 | 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 CAD? 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 CAD device
- #1 K240375 V80 Anesthetic Vaporizer (V80)score 8.9 · 3 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? (2)
2 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 |
|---|---|---|---|---|
| May 14, 2013 | Class II | Z-1653-2013 | Nonconforming Material/Component | It has come to Penlon Ltd's attention of an instance where the installation and pre-use checks listed in the User Manual may not have been followed prior to the clinical use of the vaporizer. Penlon Ltd has updated the Installation and… |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K140264 (Thornhill Research, Inc., 2015) has gone furthest, with 0 descendants of its own.
How does its category compare?
All CAD devicesCAD Vaporizer, Anesthesia, Non-Heated: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · CAD
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · CAD
Too few CAD 510(k)s in any year since 2007 to give a median.
Recalls per year · CAD
2in 2025
Class I (2 since 2007) Class II/III not classified
Adverse event reports per year · CAD
2,678in 2025
MAUDE reports naming product code CAD, 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 | 30 |
| 2008 | 0 | — | 0 | 29 |
| 2009 | 0 | — | 0 | 39 |
| 2010 | 0 | — | 0 | 32 |
| 2011 | 1 | — | 0 | 41 |
| 2012 | 0 | — | 0 | 14 |
| 2013 | 0 | — | 0 | 12 |
| 2014 | 0 | — | 0 | 5 |
| 2015 | 1 | — | 0 | 41 |
| 2016 | 0 | — | 0 | 9 |
| 2017 | 0 | — | 0 | 14 |
| 2018 | 1 | — | 0 | 11 |
| 2019 | 0 | — | 0 | 12 |
| 2020 | 0 | — | 0 | 11 |
| 2021 | 0 | — | 0 | 12 |
| 2022 | 0 | — | 0 | 13 |
| 2023 | 0 | — | 0 | 44 |
| 2024 | 1 | — | 5 | 255 |
| 2025 | 0 | — | 2 (2) | 2,678 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K002343 · printed Nov 6, 2026
Cite this page
510(k) Report. “K002343: Sigma Delta.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K002343
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026