Reported Reactions

Devices › Ventilator, non-continuous (respirator)

Device brand name · Ventilator non-continuous respirator

BiPAP Auto BiFlex: medical device reports filed with FDA

4,487 reports name it, 2021–2026. Manufacturer given most often on reports: Respironics. Product code BZD.

4,487
device reports naming the brand
0% of all MAUDE reports · about 869 a year
1,327
reports, 12 months to August 2026
793 in the 12 months before
81.3%
classified as malfunction
80.7% across the product code
1.4%
classified as death, as reported
65 reports · not verified by FDA

4,487 medical device reports received by FDA name the brand "BiPAP Auto BiFlex" (ventilator non-continuous respirator); the manufacturer given most often on reports is Respironics; received from May 2021 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

1,327 reports arrived in the 12 months to August 2026, up 67% from 793 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (81.3%), injury (17.2%) and death (1.4%); across all ventilator, non-continuous (respirator) reports (product code BZD) death is recorded in 1.5% and malfunction in 80.7%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are degraded (99.1%), contamination (7.2%) and overheating of device (2.2%). The patient problems coded most often are headache, cancer and dizziness. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

0198395Sep 2021: 1Oct 2021: 2Nov 2021: 4Dec 2021: 82022Jan 2022: 31Feb 2022: 45Mar 2022: 35Apr 2022: 60May 2022: 183Jun 2022: 254Jul 2022: 395Aug 2022: 89Sep 2022: 96Oct 2022: 35Nov 2022: 73Dec 2022: 402023Jan 2023: 23Feb 2023: 23Mar 2023: 19Apr 2023: 22May 2023: 19Jun 2023: 18Jul 2023: 24Aug 2023: 23Sep 2023: 27Oct 2023: 21Nov 2023: 22Dec 2023: 302024Jan 2024: 20Feb 2024: 67Mar 2024: 62Apr 2024: 101May 2024: 136Jun 2024: 174Jul 2024: 118Aug 2024: 64Sep 2024: 23Oct 2024: 206Nov 2024: 57Dec 2024: 322025Jan 2025: 57Feb 2025: 210Mar 2025: 137Apr 2025: 12May 2025: 4Jun 2025: 27Jul 2025: 21Aug 2025: 7Sep 2025: 15Oct 2025: 21Nov 2025: 259Dec 2025: 202026Jan 2026: 176Feb 2026: 238Mar 2026: 341Apr 2026: 25May 2026: 22Jun 2026: 48Jul 2026: 141Aug 2026: 21

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

06681,3362021: 1820212022: 1,33620222023: 27120232024: 1,06020242025: 79020252026: 1,0122026

Event type and report source

Event type, as classified on the report

Death1.4%65
Injury17.2%774
Malfunction81.3%3,648
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%4,487
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 303,240 reports carrying product code BZD. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Degraded4,44799.1%95.4%
Contamination3247.2%4.4%
Overheating of device1002.2%0.7%
Thermal decomposition of device70.2%0.2%
Material integrity problema problem with the device material60.1%0.2%
Excessive heating50.1%0.1%
Noise, audible50.1%0.1%
Device contamination with chemical or other material40.1%0.1%
Contamination /decontamination problem30.1%0.1%
Device emits odor30.1%0.2%
Environmental particulates20%0%
Temperature problem20%0.1%
Activation failure10%0%
Activation problem10%0%
Circuit failure10%0.1%
Device contamination with body fluid10%0%
Fumes or vapors10%0%
Insufficient device problem information10%0.2%
Loose or intermittent connection10%0%
Material deformation10%0%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Headachehead pain3487.8%
Cancer3137%
Dizzinesslight-headedness or unsteadiness2926.5%
Asthmaasthma2214.9%
Eye irritationeye irritation1603.6%
Dyspneashortness of breath1373.1%
Skin inflammation/ irritation1172.6%
Inflammationinflammation1092.4%
Respiratory tract infectiona respiratory infection1062.4%
Nauseafeeling sick781.7%
Hypersensitivity/allergic reaction761.7%
Sore throat741.6%
Vomitingbeing sick721.6%
Coughcough621.4%
Appropriate clinical signs, symptoms and conditions term/code not available571.3%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureBiPAP Auto BiFlexProduct code BZDAll MAUDE reports
Reports4,487303,24026,136,888
Share of that pool—1.5%0%
Classified as death, per 1,000 reports14159
Classified as injury17.2%17.7%36.2%
Classified as malfunction81.3%80.7%62.3%
Filed by the manufacturer100%99%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code BZD

BrandReportsLatest 12 monthsClassified as death
DreamStation Auto CPAP146,78027,7410.9%
REMstar Auto A-Flex19,6567,0831%
DreamStation Auto BiPAP15,3168711.8%
REMstar Pro C-Flex+14,6434,6891.2%
DreamStation CPAP13,8953362.5%
Philips CPAP Device12,779585.5%
DreamStation CPAP Pro10,7896740.8%
REMstar AutoA-Flex8,6591,7321.1%
REMstar Auto5,0891,4240.9%
DreamStation4,2101,7031.6%
REMstar Plus C-Flex3,6821,5820.8%
Dreamstation Auto3,150380.3%
DreamStation BiPAP Pro3,0491081.9%
REMstar Plus2,5814991.9%
Philips CPAP2,470114.3%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about BiPAP Auto BiFlex reports

How many FDA reports name BiPAP Auto BiFlex?

4,487 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 1,327 in the latest 12 months.

What kinds of events are reported?

malfunction (81.3%), injury (17.2%) and death (1.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

degraded (99.1%), contamination (7.2%), overheating of device (2.2%), thermal decomposition of device (0.2%) and material integrity problem (0.1%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that BiPAP Auto BiFlex was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.