Device brand name · Gas-machine anesthesia

Flow-I: medical device reports filed with FDA

582 reports name it, 2013–2024. Manufacturer given most often on reports: Maquet Critical Care. Product code BSZ.

Read first · FDA's statement on these data

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product. openFDA, FDA

FDA adds: "Although MDRs are a valuable source of information, this passive surveillance system has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data. In addition, the incidence or prevalence of an event cannot be determined from this reporting system alone due to potential under-reporting of events and lack of information about frequency of device use." And: "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."

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

582
device reports naming the brand: 0% of all MAUDE reports · about 43 a year; 0
reports, 12 months to August 2026: 0 in the 12 months before; 91.9%
classified as malfunction: 97.9% across the product code; 0%
classified as death, as reported: 0 reports · not verified by FDA

FDA's MAUDE database holds 582 reports that name the brand "Flow-I" (gas-machine anesthesia), received between January 2013 and July 2024; the manufacturer given most often on reports is Maquet Critical Care. Spellings of one product vary from report to report.

0 reports arrived in the 12 months to August 2026, and none 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 (91.9%) and injury (7.9%); across all gas-machine, anesthesia reports (product code BSZ) death is recorded in 0.2% and malfunction in 97.9%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are output problem (78.2%), contamination /decontamination problem (2.6%) and device displays incorrect message (2.1%). The patient problems coded most often are no patient involvement, low oxygen saturation and awareness during anesthesia. 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

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

Event type and report source

Event type, as classified on the report

Death0%0

Injury7.9%46

Malfunction91.9%535

Other0%0

Not given0.2%1

Who filed the report

Manufacturer report94.7%551

Voluntary report0.3%2

User facility report0%0

Distributor report5%29

Not given0%0

Grey bar: all 48,583 reports carrying product code BSZ. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)	Reports	Share	Share across product code
Output problem	455	78.2%	2.7%
Contamination /decontamination problem	15	2.6%	0%
Device displays incorrect message	12	2.1%	1.8%
Leak/splashthe device leaked	12	2.1%	1.6%
Failure to deliverthe device did not deliver the dose or item	11	1.9%	2.9%
Increase in pressure	10	1.7%	2.3%
Infusion or flow problema problem with flow or infusion	9	1.5%	1.7%
Mechanical problema mechanical problem	6	1%	9.9%
Pressure problem	6	1%	1.3%
Insufficient device problem information	5	0.9%	0.5%
Chemical problem	4	0.7%	0%
Detachment of device or device componentpart of the device came off	3	0.5%	0.4%
Moisture or humidity problem	3	0.5%	0%
Battery problema problem with the battery	2	0.3%	0.3%
Device operates differently than expectedthe device behaved unexpectedly	2	0.3%	3.7%
Fluid/blood leak	2	0.3%	0%
Gas output problem	2	0.3%	2.3%
Incorrect, inadequate or imprecise result or readings	2	0.3%	0.2%
Insufficient flow or under infusion	2	0.3%	5.3%
Misassembly by users	2	0.3%	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)	Reports	Share
No patient involvement	48	8.2%
Low oxygen saturation	31	5.3%
Awareness during anesthesia	6	1%

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

In context

Measure	Flow-I	Product code BSZ	All MAUDE reports
Reports	582	48,583	26,136,888
Share of that pool	—	1.2%	0%
Classified as death, per 1,000 reports	0	2	9
Classified as injury	7.9%	1.5%	36.2%
Classified as malfunction	91.9%	97.9%	62.3%
Filed by the manufacturer	94.7%	98%	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 BSZ

Brand	Reports	Latest 12 months	Classified as death
Carestation 650	6,160	1,686	0%
Avance	5,977	1,353	0.1%
Aisys	5,275	1,531	0.1%
Carestation 620	4,356	1,402	0%
Aisys Cs2	3,105	4	0.1%
Avance Cs2	2,945	3	0.2%
Aespire 7100	2,778	3	0.1%
Carestation 750	2,541	1,042	0%
Aespire 7900	2,049	11	0.2%
Aespire View	1,729	10	0.1%
Aespire	1,363	564	0.1%
Aestiva 7900	2,521	2	0%
Aestiva 7100	871	0	0%
Aestiva	794	329	0.1%
Carestation 650 A1	479	10	0%

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 Flow-I reports

How many FDA reports name Flow-I?

582 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.

What kinds of events are reported?

malfunction (91.9%) and injury (7.9%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

output problem (78.2%), contamination /decontamination problem (2.6%), device displays incorrect message (2.1%), leak/splash (2.1%) and failure to deliver (1.9%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (94.7%), distributor reports (5%) and voluntary reports (0.3%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Flow-I 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.