Datex Ohmeda Aespire 7900
Datex Ohmeda · Model Aespire 7900
Unparalleled ventilation Advanced ventilation modes include PSVPro System is lightweight and compact for easy maneuverability Large work surface offers more room for supplies and chart LED light strip provides bi-level work surface illumination Bellows provide quick visual confirmation of the integrity of breathing system High-quality pneumatic flow mixing Auxiliary common gas outlet facilitates low-pressure leak test PSV Pro Assists in overcoming the resistance within the breathing circuit and patient circuit, helping decrease the patient's work of breathing Helps counter the reduction in the patient’s functional residual capacity (FRC) and the decrease in muscle contraction due to the anesthetics May be used with LMAs due to its lower airway pressures With automatic apnea backup mode, uses an SIMV-PC + PSV mode to maintain a minimum minute ventilation in the event the patient stops spontaneously breathing. With adjustable inspiration termination, allows fine-tuning to the patient’s breathing pattern. Supports virtually all spontaneous breaths Uses a decelerating flow pattern (optimizes inspiratory flow) Sustains or enhances the patient’s tidal volume and etCO2 maintenance
Key tips
- ·A failed daily leak test takes the machine out of service immediately - there is no acceptable workaround.
- ·Never run an agent-specific vaporizer with the wrong agent, even briefly, during testing.
- ·CO2-absorbent exhaustion mimics several unrelated fault symptoms - rule it out early.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
O2 failure / pipeline alarm
HighSymptoms: O2 low-pressure alarm, inability to ventilate.
Root cause: Pipeline disconnect or failed O2 flush valve.
Breathing circuit leak
HighSymptoms: Low minute volume, volume loss, leak alarm.
Root cause: Loose connections, torn bellows, cracked hose.
Scavenging system fault
MediumSymptoms: High scavenger pressure, agent smell in OR.
Root cause: Obstructed scavenger line or failed regulator.
Absorber exhaustion
MediumSymptoms: Rising EtCO2, patient rebreathing.
Root cause: CO2 absorbent saturated.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
O2 pressure regulator
Class Periodic replacementRel. cost $$$R&R Difficult
Vaporizer (agent-specific)
Requires periodic calibration.
Class Major service partRel. cost $$$$R&R Expert-level
Breathing circuit / bellows
Class Periodic replacementRel. cost $$R&R Fairly easy
CO2 absorber canister
Consumable, replace on schedule.
Class ConsumableRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| O2 pressure regulator | Periodic replacement | $$$ | Difficult |
| Vaporizer (agent-specific) Requires periodic calibration. | Major service part | $$$$ | Expert-level |
| Breathing circuit / bellows | Periodic replacement | $$ | Fairly easy |
| CO2 absorber canister Consumable, replace on schedule. | Consumable | $ | Easy |
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.
- ·Daily pre-anesthesia machine check: leak test, O2 sensor calibration, per facility protocol
- ·Scheduled vaporizer calibration and agent-specific service
- ·Absorber / CO2 canister replacement
- ·Breathing circuit and hose inspection
- ·Annual full PM and electrical safety test
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Vaporizer calibration drift
- Confirm the presentation - typically delivered agent concentration off, low/high agent alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: worn bellows or O-ring; agent contamination.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the vaporizer (agent-specific) per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Breathing circuit leak
- Confirm the presentation - typically low minute volume, volume loss, leak alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: loose connections, torn bellows, cracked hose.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the breathing circuit / bellows per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Operating rooms
- Procedure / endoscopy suites requiring sedation
- Obstetric delivery rooms
Documents & Manuals
- Aespire 7900 Technical Reference ManualUser Manual · External
- Aespire 7900 User Manual.pdfUser Manual · External
- Datex-Ohmeda Aespire 7900 Anaesthesia Machine - User reference manual 1.pdfUser Manual · External
- Datex-Ohmeda Aespire 7900 Anaesthesia Machine - User reference manual 2.pdfUser Manual · External
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