510(k) · Cleared
ClearedSmart Peak Flow Meter
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Guangzhou Homesun Medical Technology Co., Ltd. · BZH Meter, Peak Flow, Spirometry
Cleared on Dec 6, 2019 as substantially equivalent to K170281 (Beijing M&B Electronic Instruments Co., Ltd., 2017) after a 212-day review. Its family tree reaches back 2 generations to 2014. 1 later device descends from it.
- Decided
- Dec 6, 2019
- Review
- 212 days
- Class
- Class II
- Product code
- BZH
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 2 generations to K133975 (2014). 1 later device descends from it, 1 citing it directly.
- Root · 2 generations backK133975 MSA100 Peak Flow MeterBeijing M&B Electronic Instruments Co., Ltd. · 2014
- 1 generation backK170281 MSA100BT Peak Flow MeterBeijing M&B Electronic Instruments Co., Ltd. · 2017
- This deviceK191239 Smart Peak Flow MeterGuangzhou Homesun Medical Technology Co., Ltd. · 2019
- Descendant · cites it directly · 0 of its ownK203196 Peak flow meterShanghai Sonmol Medical Equipment Co., Ltd. · 2021
Most influential descendants
Showing 1 of 1 · See all- K203196Peak flow meterShanghai Sonmol Medical Equipment Co., Ltd. · 2021 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −2 | K133975 | MSA100 Peak Flow Meter | Beijing M&B Electronic Instruments Co., Ltd. | 2014 | — |
| −1 | K170281 | MSA100BT Peak Flow Meter | Beijing M&B Electronic Instruments Co., Ltd. | 2017 | — |
| 0 (this device) | K191239 | Smart Peak Flow Meter | Guangzhou Homesun Medical Technology Co., Ltd. | 2019 | — |
| +1 | K203196 | Peak flow meter | Shanghai Sonmol Medical Equipment Co., Ltd. | 2021 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2021 | 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 BZH? 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 BZH device
- #1 K252802 Peak Flow Meter (PF-10(BR-PEF231))score 13.5 · 8 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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 |
|---|---|---|---|
| * | K170281 | MSA100BT Peak Flow MeterSummary page 4…Sponsor Beijing M&B Electronic Instruments Co., Ltd. Device Name and Model MSA100BT Peak Flow Meter 510(k) Number K170281 Product Code BZH Regulation Number 21 CFR 868.1860 Regulation Class II Re… | 2017 |
| † | K982995 | Accutrax, Model EPF840 | 1998 |
| † | K053156 | Mini-Wright Digital, Model 3120001 | 2006 |
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 |
|---|---|---|---|
| K203196 | Peak flow meter | 2021 | 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?
- The line of descent spans 5 years and passes through 2 companies; a new generation was cleared every 3.0 years on median.
- None of the 2 ancestors has a recall.
- Of its descendants, K203196 (Shanghai Sonmol Medical Equipment Co., Ltd., 2021) has gone furthest, with 0 descendants of its own.
- 1 other device also cites its predicate K170281.
How does its category compare?
All BZH devicesBZH Meter, Peak Flow, Spirometry: FDA decisions, review times, recalls and adverse event reports over 20 years. 2019, this device’s year, is highlighted.
FDA decisions per year · BZH
3in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · BZH
371in 2024
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · BZH
No recall names BZH since 2007.
Adverse event reports per year · BZH
1in 2015
MAUDE reports naming product code BZH, 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 | 0 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 2 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 1 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 1 | — | 0 | 3 |
| 2014 | 1 | — | 0 | 22 |
| 2015 | 0 | — | 0 | 1 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 1 | — | 0 | 0 |
| 2018 | 3 | 115 | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 2 | — | 0 | 0 |
| 2021 | 1 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 1 | — | 0 | 0 |
| 2024 | 3 | 371 | 0 | 0 |
| 2025 | 0 | — | 0 | 0 |
| 2026 | 2 | — | 0 | — |
What is it indicated for?
This device is intended to monitor a patient’s Peak Expiratory Flow (PEF) and Forced Expiratory Volume in one second (FEV1) at home. The device is designed for adults and children over 5 years of age with caregiver supervision. The device is intended for monitoring respiratory conditions such as asthma.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K191239 · printed Nov 6, 2026
Cite this page
510(k) Report. “K191239: Smart Peak Flow Meter.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K191239
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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