Datex Ohmeda Ohmeda OxySTAT
Datex Ohmeda · Model Ohmeda OxySTAT
Pulse Oximeter, …
Key tips
- ·A no-signal/flatline alarm gets checked on the patient first, not the monitor - rule out a real clinical event before troubleshooting.
- ·Recalibrate NIBP against a reference manometer, not just a self-test pass.
- ·Reused patient cables (SpO2, ECG leads) are a common source of intermittent-fault complaints - swap the cable before the module.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
No SpO2 / pulse reading or poor signal
HighSymptoms: No saturation / pulse value, "pulse search", low signal quality, implausible values.
Root cause: Worn or wrong SpO2 sensor, a damaged cable, poor site / perfusion, or motion.
Sensor / cable connector fault
MediumSymptoms: Reading drops when the cable is moved, sensor not recognised.
Root cause: Broken conductors in the sensor / extension cable, or a worn connector.
Inaccurate SpO2 vs a co-oximeter
MediumSymptoms: SpO2 consistently biased vs an arterial reference.
Root cause: Sensor degradation, or a monitor calibration / module fault.
Alarm / audio fault
MediumSymptoms: No or quiet audible alarm.
Root cause: Speaker or audio-board fault - a safety-critical failure.
Battery / power fault
MediumSymptoms: Short battery run time, will not power on.
Root cause: Aged battery.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
SpO2 sensor (reusable / disposable)
Class Frequent wear itemRel. cost $$R&R Easy
Pulse-oximetry extension cable
Class Frequent wear itemRel. cost $$R&R Easy
Battery
Class Periodic replacementRel. cost $$R&R Fairly easy
SpO2 module / board
Class Major service partRel. cost $$$R&R Moderate
Alarm speaker / audio board
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| SpO2 sensor (reusable / disposable) | Frequent wear item | $$ | Easy |
| Pulse-oximetry extension cable | Frequent wear item | $$ | Easy |
| Battery | Periodic replacement | $$ | Fairly easy |
| SpO2 module / board | Major service part | $$$ | Moderate |
| Alarm speaker / audio board | Major service part | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Routine cable and lead-wire inspection for fraying/wear
- ·Battery conditioning cycle
- ·NIBP calibration check against a reference manometer
- ·ECG / SpO2 accuracy verification against a patient simulator
- ·Annual electrical safety test
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: No SpO2 or poor signal
- Fit a fresh, correct-size sensor on a well-perfused, still site.
- Swap the extension cable.
- Confirm the signal-quality / pleth indicator improves.
- Test the monitor with an SpO2 simulator.
- Replace the sensor / cable, or refer the monitor if the simulator also fails.
Symptom: Accuracy or alarm concern
- Compare SpO2 to a co-oximeter blood gas where clinically indicated.
- Try a known-good sensor.
- Verify against an SpO2 simulator at several saturations.
- Test the audible alarm at the set volume.
- Refer for module / audio service if it fails the simulator or alarm test.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- ICU / CCU
- Emergency Department
- OR / PACU
- General med-surg floors
- Step-down units
- Telemetry units
Documents & Manuals
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
The electronic vaporization system in the GE Aisys Anesthesia machine contains the following components: Backpressure Valve, Inflow Check Valve and Cassette Interface Board, that can contribute to independent failures.
- RECALL
Neonatal Flow Sensors supplied for use with the Neonatal Enhancement for the Engstrm Carestation may result in the sensors providing invalid values and alarm messages when exposed to high flow rates.
- RECALL
There is a possibility of a vaporizer power failure, with audible and visual alarms, when using the Tec 6 Plus Desflurane Vaporizer.
- RECALL
Certain Compact Absorbers may have an increased resistance to gas flow due to an improperly manufactured foam filter. The increased resistance can cause an elevated pressure at the ventilator end of the inspiratory circuit, but the pressure at the patient may be reduced. This could result in patient hypoventilation and hypoxia.
- RECALL
Vaporizer shutdown with alarm-An intermittent leak in the Aladin 2 cassette/Aisys pneumatic interface (valves) may occur that will invoke an alarm state. When this occurs 'Vaporizer Failure' will appear on the Aisys main display, with an accompanying audible alrm. Delivery of anesthetic Agent is halted; gas flow and ventilation are not affected.
- RECALL
Two conditions may occur with the S/5 Aespire Anesthesia System. The internal auxiliary flowmeter tubing may become disconnected if the auxiliary oxygen supply tubing is occluded and the patient may not receive desired supplemental oxygen which could lead to serious injury if undetected. Also the O2 switch may leak or fail.
- RECALL
Phototherapy medical device may lose its position and can cause a safety hazard to the patient.
- RECALL
Increased circuit pressure as a result of a misassembled Aestiva/5 Active Gas Scavenging System.
- RECALL
Anesthetic agents could be delivered at concentrations above the concentration set on the S/5 and AS/3 Anesthesia Delivery Units (ADU) having serial numbers within a specified range.
- RECALL
Datex-Ohmeda Cardiocap/5 Patient Monitors have bracket pins which do not adequately secure them to their optional mounting stand so the monitors may fall.
- RECALL
Possible disruption of mechanical ventilation or disruption of anesthetic agent delivery.
- RECALL
Falsely high blood oxygen saturation readings in some circumstances could result in no alarm in a critical life-threatening situation.
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