GE HealthCare Aestiva MRI
GE HealthCare · Model Aestiva MRI
• With integrated and proven 7900 SmartVent* ventilation, an exceptional tool for intraoperative MRI, it’s versatile enough to ventilate a broad range of patients. • The physically integrated Magnetic Field Strength Monitor (Gauss Alarm) warns you when the machine is moved too close to the MRI magnet (up to 3T). • The ergonomically designed handles make it easy to transport. • The Tec* 7 Vaporizer with Easy-fil* is designed to simplify agent filling while helping to minimize leaks. • Pressure control mode that allows you to choose a target pressure and deliver tidal volume for the desired time and pressure selected - a mode previously reserved for ICU-type ventilators. • Volume control mode that helps provide consistent delivery of set tidal volumes by automatically adjusting for changes in fresh gas flows, small system leaks, changing lung compliance, or compression losses in the ventilator, absorber, and bellows. SIMV and PSVPRo* modes help expand the capabilities of the Aestiva MRI system and help simplify the care for a broad range of patients. SIMV provides a set number of ventilator-delivered breaths per minute, allowing the patient to breathe spontaneously between the mandatory breaths. • PSVPro is designed to complement SIMV by assisting the patient's spontaneous breath. With PSVPro, the ventilator delivers a set pressure when the patient takes a breath; the patient, who must take a breath for the ventilator to provide support, controls the rate, volume, and timing of the breath.
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.
Vaporizer calibration drift
HighSymptoms: Delivered agent concentration off, low/high agent alarm.
Root cause: Worn bellows or O-ring; agent contamination.
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.
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.
Breathing circuit / bellows
Class Periodic replacementRel. cost $$R&R Fairly easy
CO2 absorber canister
Consumable, replace on schedule.
Class ConsumableRel. cost $R&R Easy
Scavenger interface & hose
Class Periodic replacementRel. cost $$R&R Fairly easy
O2 pressure regulator
Class Periodic replacementRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Breathing circuit / bellows | Periodic replacement | $$ | Fairly easy |
| CO2 absorber canister Consumable, replace on schedule. | Consumable | $ | Easy |
| Scavenger interface & hose | Periodic replacement | $$ | Fairly easy |
| O2 pressure regulator | Periodic replacement | $$$ | Difficult |
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
No documents available for this device yet.
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