Invivo 4500 MRI
Invivo · Model 4500 MRI
• Fiberoptic SpO2 Technology • Heart Rate and SpO2 Values • Adult, Pediatric & Neonatal • Grip Sensor Compatible • Bright LED "Smart Display" • Battery Operation
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
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.
ECG lead-off / artifact
MediumSymptoms: Flat or noisy ECG, frequent lead-off alarms.
Root cause: Worn electrodes, loose leads, or dry gel.
SpO2 probe / sensor failure
MediumSymptoms: No pleth, SpO2 drops to --- or false low.
Root cause: LED/photodiode aging or cable damage.
NIBP measurement error
MediumSymptoms: Cuff fails to inflate, erroneous BP, long cycle.
Root cause: Pump/valve wear or cuff leak.
Display / touch panel fault
LowSymptoms: Dim, flickering, or unresponsive screen.
Root cause: Backlight or digitizer failure.
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.
Rechargeable backup battery
Class Periodic replacementRel. cost $$R&R Fairly easy
Display / touch assembly
Class Periodic replacementRel. cost $$$R&R Difficult
ECG patient cable & lead set
High-turnover; keep inventory.
Class Frequent wear itemRel. cost $$R&R Easy
SpO2 sensor (adult/ped/neo)
Class Frequent wear itemRel. cost $$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Rechargeable backup battery | Periodic replacement | $$ | Fairly easy |
| Display / touch assembly | Periodic replacement | $$$ | Difficult |
| ECG patient cable & lead set High-turnover; keep inventory. | Frequent wear item | $$ | Easy |
| SpO2 sensor (adult/ped/neo) | Frequent wear item | $$ | 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.
- ·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 structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: ECG lead-off / artifact
- Confirm the presentation - typically flat or noisy ECG, frequent lead-off alarms - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: worn electrodes, loose leads, or dry gel.
- 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 eCG patient cable & lead set 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: SpO2 probe / sensor failure
- Confirm the presentation - typically no pleth, SpO2 drops to --- or false low - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: lED/photodiode aging or cable damage.
- 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 spO2 sensor (adult/ped/neo) 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.
Technical Specs
- Height
- 3.25 in
- Length
- 10.25 in
- Weight
- 5.6 lbs
- Width
- 6.63 in
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
A diode was inadvertently not assembled into the system, which may result in coil overheating
- RECALL
The MR 200 devices failed the initial power up test due to capacitor short and hi-pot testing; possible loss of Patient Monitoring or User/Service Electrical Shock.
- RECALL
Frozen Display Numerics and Disabled Menu Keys after extended run time. This customer notification was sent August 22, 2014.
- RECALL
During production, excess metal (aluminum) debris was found stuck to the cling plastic that covers the device's pole assembly. The metallic debris could affect system performance due to the potential for a failure to power up or loss of power. This could result in the loss of monitoring and a delay in diagnosis of the patient.
- RECALL
Failure to produce the Non-Invasive Blood Pressure (NIBP) Measurement.
- RECALL
The wireless function of the IP5 radio could be interrupted causing loss of wireless communication between the IP5 and host monitoring system.
- RECALL
Invivo Corporation located at 12151 Research Parkway, Orlando, FL 32826 is recalling the Expression Information Portal (Model IP5). Upon power up, the IP5 may fail to produce audio.
- RECALL
Invivo Corporation located at 12151 Research Parkway, Orlando, FL 32826 is recalling their Expression Information Portal (Model IP5). Three different IP5 devices lost audio during use.
- RECALL
Invivo Corporation located at 12151 Research Parkway, Orlando, FL 32826 is recalling the Expression MRI Patient Monitoring System because during transport of the systems cart with a docked Display Controller Unit (DCU), a caster (wheel) may become detached. If this occurs, the cart can become unbalanced and may fall.
- RECALL
Philips Invivo has determined that it is possible for the system's alarm limits and other device settings to spontaneously change without user intervention. This problem is associated with intermittent and frequent loss of communication between the wireless Processing Unit and the Display Controller Unit.
- RECALL
Philips Invivo Corporation of Orlando, FL is recalling their Expression MRI Patient Monitoring System. During transport of the system's cart with a docked Display Controller Unit (DCU), a front caster (wheel) may become loose and fall off causing the cart to become unbalanced and fall.
- RECALL
Battery Failure: The Invivo Lithium Polymer Wireless Module Battery Part Number 9065 and the Lithium Polymer Fiber Optic Module Battery Part Number 9067 is being recalled because the battery, itself, when dropped from 3 feet/1 meter onto a hard surface can produce a flame and then emit smoke. The firms investigation shows that the battery failure does not occur when a module is dropped with a ba
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