510(k) · Cleared
ClearedPuritan Bennett, Goodknight 420 Evolution, Model M-113903-US
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Tyco Healthcare Nancy · BZD Ventilator, Non-Continuous (Respirator)
Cleared on Jun 5, 2003 as substantially equivalent to K020886 (Tyco Healthcare Nancy, 2002) and 1 other predicate after a 27-day review. Its family tree reaches back 5 generations to 1990.
- Decided
- Jun 5, 2003
- Review
- 27 days
- Class
- Class II
- Product code
- BZD
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 5 generations to K903764 (1990). 9 ancestors in all. No later device cites it as a predicate yet.
- Root · 5 generations backK903764 Companion 318 Nasal Cpap SystemPuritan Bennett Corp. · 1990
- 4 generations backK960518 The Puritan-Bennett 318 Plus Nasal Cpap SystemPuritan Bennett Corp. · 1996
- 3 generations backK980365 Goodknight 418 Cpap SystemNellcor Puritan Bennett, Inc. · 1998
- 2 generations backK991150 Nellcor Puritan Bennett, Goodknight 418GNellcor Puritan Bennett France Dvpt. · 1999
- 1 generation backK993584 Mallinckrodt, Goodknight 418A, Goodknight 418P, Silverlining 2Nellcor Puritan Bennett France Dvpt. · 2000
- This deviceK031470 Puritan Bennett, Goodknight 420 Evolution, Model M-113903-USTyco Healthcare Nancy · 2003
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −5 | K903764 | Companion 318 Nasal Cpap System | Puritan Bennett Corp. | 1990 | — |
| −4 | K960518 | The Puritan-Bennett 318 Plus Nasal Cpap System | Puritan Bennett Corp. | 1996 | — |
| −3 | K980365 | Goodknight 418 Cpap System | Nellcor Puritan Bennett, Inc. | 1998 | — |
| −2 | K991150 | Nellcor Puritan Bennett, Goodknight 418G | Nellcor Puritan Bennett France Dvpt. | 1999 | — |
| −1 | K993584 | Mallinckrodt, Goodknight 418A, Goodknight 418P, Silverlining 2 | Nellcor Puritan Bennett France Dvpt. | 2000 | — |
| 0 (this device) | K031470 | Puritan Bennett, Goodknight 420 Evolution, Model M-113903-US | Tyco Healthcare Nancy | 2003 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 2002 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in BZD? 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 BZD device
- #1 K250624 myAirscore 15.7 · 12 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (2)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K020886 | Purtian Bennett, Good Knight 420G Model M-113900-US; Purtan Bennett, Goodknight 420S… | 2002 |
| * | K993584 | Mallinckrodt, Goodknight 418A, Goodknight 418P, Silverlining 2Summary page 1…), per 21 CFR 868.5905 3. Predicate Device Equivalence Puritan 13ennett GoodKnight 420s CPAP system, KO20886 Puritan 13ennett GoodKnight 41 8P CPAP system, K993584 4. Device Description The GoodKnight 420 Evolution is designed to deliver Continuous Positive Airway Pressure betwe… | 2000 |
What descends from it?
No later submission names this one as a predicate yet.
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?
- The line of descent spans 13 years and passes through 4 companies; a new generation was cleared every 2.2 years on median.
- None of the 9 ancestors has a recall.
- 2 other devices also cite its predicate K020886.
How does its category compare?
All BZD devicesBZD Ventilator, Non-Continuous (Respirator): FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · BZD
7in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · BZD
189in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · BZD
8in 2023
Class I (13 since 2007) Class II/III not classified
Adverse event reports per year · BZD
60,279in 2025
MAUDE reports naming product code BZD, 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 | 21 | 83 | 29 | 65 |
| 2008 | 17 | 108 | 2 | 67 |
| 2009 | 23 | 90 | 1 | 147 |
| 2010 | 12 | 122 | 0 | 143 |
| 2011 | 23 | 125 | 1 | 189 |
| 2012 | 21 | 133 | 0 | 139 |
| 2013 | 23 | 127 | 0 | 82 |
| 2014 | 14 | 172 | 0 | 86 |
| 2015 | 11 | 224 | 0 | 114 |
| 2016 | 12 | 217 | 0 | 118 |
| 2017 | 5 | 221 | 0 | 148 |
| 2018 | 5 | 280 | 0 | 101 |
| 2019 | 6 | 231 | 4 (4) | 188 |
| 2020 | 6 | 137 | 0 | 126 |
| 2021 | 6 | 192 | 0 | 6,066 |
| 2022 | 4 | 253 | 0 | 90,768 |
| 2023 | 5 | 204 | 8 (7) | 27,987 |
| 2024 | 10 | 132 | 0 | 68,262 |
| 2025 | 7 | 189 | 0 | 60,279 |
| 2026 | 10 | 214 | 2 (2) | — |
What is it indicated for?
The Puritan Bennett GoodKnight 420 Evolution is intended for use in treating
obstructive sleep apnea (OSA) in spontaneously breathing patients weighing over 30 kg
within a homecare and hospital environment.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K031470 · printed Nov 6, 2026
Cite this page
510(k) Report. “K031470: Puritan Bennett, Goodknight 420 Evolution, Model M-113903-US.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K031470
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026