Internal testing at the supplier, revealed that a crimped wire was placed into an air bubble detector (ABD) sensor connector backwards, preventing the crimped wire from locking into the mating wire connector. This intermittent connection may result in false air bubble alarms.
Take action
Contact the company
📍Recalling firmTerumo Cardiovascular Systems Corporation6200 Jackson Rd · Ann Arbor, MI 48103-9586
“Terumo Air Sensor Recall: False Alarms from Wiring Issue.” GovInfoNow, updated August 19, 2026. https://govinfonow.com/recall/64427-terumo-air-sensor-recall-false-alarms-from-wiring-issue. Based on FDA recall #Z-2961-2020 (https://api.fda.gov/device/enforcement.json?search=recall_number:%22Z-2961-2020%22&limit=1).
The FDA announced on August 25, 2020, that Terumo Cardiovascular Systems Corporation is recalling the Terumo Advanced Perfusion System 1 Ultrasonic Air Sensor due to a manufacturing defect. The hazard involves false air bubble alarms caused by an improperly installed wire connector.
How to tell if you have it
Brand: Terumo
Product: Terumo Advanced Perfusion System 1 Ultrasonic Air Sensor 1/4x3/32
Catalog Number: 5791
Serial Numbers: 20019, 20020
Quantity: 2 units
The hazard
Internal testing revealed that a crimped wire was placed into the air bubble detector sensor connector backwards. This prevents the wire from locking correctly, which may result in false air bubble alarms.
Context
GovInfoNow's records show Terumo Cardiovascular Systems Corporation has 20 other recalls on record since June 27, 2017. Recent brand recalls include the May 28, 2025 Terumo CDI OneView BPM Probe Recall for temperature inaccuracy risk and the March 3, 2025 Terumo CDI OneView Hematocrit Probe recall for dashed SO2 values triggering false alarms. Other recent recalls of similar products include the June 30, 2026 Getinge SERVO-U/N Ventilator Sensor Module Recall and the May 21, 2026 Hillrom VOLARA System Circuit Kit Recall.
How to tell if you have this one
Check for serial numbers 20019 or 20020 on the sensor. The product is used with Terumo and Sarns air detection systems during heart-lung procedures.
Brand
Terumo
Category
Medical device
FDA recall event · 3 products
All 3 products in this recall
FDA lists each product line separately under one recall event. Check your product description, lot or code numbers against each row. Every row shares the hazard and remedy on this page.
Classification
Class II
Status
Terminated
Distribution
Worldwide distribution - US Nationwide distribution.
Recall number
Product, codes & lots
Quantity
Z-2959-2020
Terumo Advanced Perfusion System 1 Ultrasonic Air Sensor 3/8x3/32, Catalog Number 5773 - Product Usage: intended for use with Terumo and Sarns brand air detection and heart-lung systems to detect gross air bubbles in the line during extracorporeal procedures.; UDI: 00886799000038; Serial Numbers: 20288 20289 20290 20291 20292 20293 20294 20295 20296 20299 20300 20301 20302 20306 20307 20308 20309 20310 20312 20317 20318 20320 20321 20322 20323 20324 20326 20328 20329 20331 20332 20334 20338 20339 20341 20342 20343 20344 20345 20346 20347 20348 20349 20350 20351 20352 20358 20365 20368 20373 20374 20375 20381 20382 20383 20384 20385 20387 20388 20392 20393 20395 20396 20397 20398 20399 20401 20402 20403 20404 20405 20408 20410 20411 20412 20555 20556 20557 20558 20559 20560 20561 20562 20563 20564 20565 20566 20567 20568 20569 20570 20571 20572 20573 20574 20575 20576 20577 20578 20579
100
Z-2960-2020
Terumo Advanced Perfusion System 1 Ultrasonic Air Sensor 1/4x1/16 UAS BLK, Catalog Number 5785 - Product Usage: intended for use with Terumo and Sarns brand air detection and heart-lung systems to detect gross air bubbles in the line during extracorporeal procedures.; UDI: 00886799000045; Serial Numbers: 20230 20263 20265
3
Z-2961-2020
Terumo Advanced Perfusion System 1 Ultrasonic Air Sensor 1/4x3/32, Catalog Number 5791 - Product Usage: intended for use with Terumo and Sarns brand air detection and heart-lung systems to detect gross air bubbles in the line during extracorporeal procedures.; UDI: 00886799000052; Serial Numbers: 20019 20020
2
Based on the official FDA remedy
What to do — step by step
Check Sensor Serial Number
Look for serial numbers 20019 or 20020 on the sensor.
Where it went and when
Where it was distributed
Distributed nationwide, and outside the U.S.
Nationwide
Not listed
FDA distribution: “Worldwide distribution - US Nationwide distribution.” States read from FDA’s own wording; “not listed” means the notice does not name it.
Distributed nationwide, and outside the U.S.
Recall timeline
FDA terminated this recall 5 months after the firm started it.
1Firm started the recall
2FDA classified it Class II
3Published in FDA’s Enforcement Report
4FDA terminated the recall
Dates from the agency record only; steps without a date are left out.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Official source: FDA Recall #Z-2961-2020 (August 25, 2020) — FDA publishes no per-recall page; this is the official machine-readable enforcement record. Search FDA recalls for Z-2961-2020 to see it in context.
Plain-language summary written by qwen3:4b on August 19, 2026, from the official record above. Not reviewed by a person — if it conflicts with the FDA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official FDA recall data; we don’t issue, amend or administer recalls.