Avalon TOCO MP Transducer (REF 989803170601)Recalls & reported problems
Philips Medizin Systeme Böblingen GmbH · Toco MP Transducer including Toco and maternal Pulse Measurement · Class 2
- Adverse event reports
- 8
- Deaths reported
- 0
- Injuries reported
- 2
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 8 adverse event reports that list this exact device (DI 00884838021471), received between Jun 1, 2022 and Jun 3, 2026 — classified as 2 injuries, 6 malfunctions.
The most frequently reported specific device problem is “Incorrect Measurement” (4 reports).
Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. How this data works · Data updated Oct 13, 2026.
Reports received per month
Most reported problems
Device problems
- Incorrect Measurement4
- Overheating of Device2
- Imprecise or Erratic Results1
- Unintended Electrical Shock1
Patient problems
- No Clinical Signs, Symptoms or Conditions6
- Burn(s)1
- Electric Shock1
- Insufficient Information1
Recent adverse event reports
The 8 most recent of 8 reports, in the reporter's own words as published by the FDA.
MalfunctionJun 3, 2026Incorrect Measurement
PHILIPS RECEIVED A COMPLAINT ON THE AVALON TOCO MP TRANSDUCER INDICATING THAT THE TOCO MEASUREMENT WAS UNRELIABLE, AND THERE WAS MATERIAL DAMAGE PRESENT ON THE UNDERSIDE. THE DEVICE WAS IN USE ON A PATIENT AT THE TIME OF THE EVENT. THERE WAS NO ADVERSE EVENT REPORTED.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 25376909 ↗MalfunctionMar 2, 2026Incorrect Measurement
THE CUSTOMER REPORTED INCORRECT VALUES WERE DISPLAYED. THE DEVICE WAS IN USE ON A PATIENT AT THE TIME OF THE EVENT, THERE WAS NO ADVERSE EVENT REPORTED.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 24480104 ↗InjuryJan 28, 2026Unintended Electrical Shock
IT WAS REPORTED THAT A NURSE RECEIVED AN ELECTRIC SHOCK FROM THE TRANSDUCER. IT WAS NOTED THE MEMBRANE ON THE TRANSDUCER WAS SPLIT, SO IT WAS EXCHANGED. THE NATURE OF THE SHOCK WAS NOT PROVIDED.
Patient problems: Electric Shock
MAUDE report 24198408 ↗MalfunctionDec 10, 2024Overheating of Device; Overheating of Device
AS THE REPORTED EVENT REGARDING THE PATIENT BURN WAS NOT A LIFE-THREATENING, THERE WAS NO INTERVENTION ASIDE FROM AN OINTMENT PERFORMED, AND NO INDICATION OF PERMANENT DAMAGE. THIS REPORT IS NO LONGER CONSIDERED TO BE A SERIOUS INJURY. THE BURN IS CONSIDERED TO BE A MINOR SECOND-DEGREE BURN.
Patient problems: Insufficient Information; No Clinical Signs, Symptoms or Conditions
MAUDE report 20896181 ↗MalfunctionAug 6, 2024Imprecise or Erratic Results; Imprecise or Erratic Results
IT WAS REPORTED THERE WAS A MEASUREMENT PROBLEM WITH THE DEVICE; HOWEVER, NO SPECIFIC INFORMATION ON THE MEASUREMENT PROBLEM WERE PROVIDED.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 19921275 ↗InjuryAug 16, 2023Overheating of Device; Overheating of Device
IT WAS REPORTED THAT A PATIENT RECEIVED A BURN FROM A TOCO TRANSDUCER. THE DEVICE WAS IN USE AT TIME OF EVENT, THERE WAS NO ADVERSE EVENT REPORTED.
Patient problems: Burn(s)
MAUDE report 17559962 ↗MalfunctionJul 21, 2022Incorrect Measurement; Incorrect Measurement
THE CUSTOMER REPORTED THAT AV-TOCO MATERNAL PULS XDR GIVES INCOHERENT VALUES. IT UNKNOWN IF THE DEVICE WAS IN USE AT TIME OF EVENT AND NO ADVERSE EVENT TO THE PATIENT/USER WAS REPORTED.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 15077731 ↗MalfunctionJun 1, 2022Incorrect Measurement; Incorrect Measurement
THE CUSTOMER REPORTED: " AVALON TOCO MP TRANSDUCER DEVICE LEADS INCORRECTLY" . IT IS UNKNOWN IF THE DEVICE WAS IN USE AT TIME OF EVENT AND NO ADVERSE EVENT TO THE PATIENT/USER WAS REPORTED.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 14567651 ↗
Other MONITOR, UTERINE CONTRACTION, EXTERNAL (FOR USE IN CLINIC) devices
- Avalon CL Toco+ MP Transducer Avalon Cableless Toco+ MP TransducerPhilips Medizin Systeme Böblingen GmbH · MONITOR, UTERINE CONTRACTION, EXTERNAL (FOR USE IN CLINIC)13 reports
- Avalon TOCO+ TransducerPhilips Medizin Systeme Böblingen GmbH · MONITOR, UTERINE CONTRACTION, EXTERNAL (FOR USE IN CLINIC)5 reports
- Avalon Fetal & Maternal Patch Avalon CL Fetal & Maternal PatchPhilips Medical Systems Hsg · Monitor, uterine contraction, external (for use in clinic)3 reports
- Avalon CL Fetal & Maternal PodPhilips Medizin Systeme Böblingen GmbH · Monitor, uterine contraction, external (for use in clinic)1 report
- Avalon Toco MP TransducerPhilips Medizin Systeme Böblingen GmbH · Monitor, uterine contraction, external (for use in clinic)1 report
Sources: FDA GUDID, MAUDE and Medical Device Recalls via openFDA. openFDA data is not validated for clinical or regulatory use.