CAS Medical 740
CAS Medical · Model 740
Fast, accurate blood pressure readings for neonates through adults even in the most challenging situations such as high motion or low perfusion. Monitor SpO2 and temperature either continuously or in "spot-check" mode. Accurate oral temperature in just 4 seconds. Ideal for medical/surgical patients on pain medications including PCA pumps, for hospital or office-based endoscopy procedures, and for the EMS applications.
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.
NIBP will not measure or is inaccurate
HighSymptoms: NIBP times out, cuff will not inflate / hold, readings implausible or fail against a reference.
Root cause: Internal NIBP pump or valve, a cuff / hose leak, or a pressure-transducer / calibration fault.
SpO2 no signal / inaccurate (if fitted)
MediumSymptoms: No saturation value or a poor pleth with a good site.
Root cause: Worn SpO2 sensor / cable, or the SpO2 module.
Temperature channel fault (if fitted)
MediumSymptoms: No or implausible temperature.
Root cause: Probe or cable fault.
Battery / power fault
MediumSymptoms: Short battery run time, will not power on or charge.
Root cause: Aged battery pack.
Printer fault (if fitted)
LowSymptoms: No or faint strip, paper jam.
Root cause: Thermal print head or paper handling.
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.
Patient cable set (ECG / IBP / SpO2 / temp)
Class Frequent wear itemRel. cost $$R&R Easy
NIBP cuff and hose
Class Frequent wear itemRel. cost $R&R Easy
Internal NIBP pump / valve
Class Major service partRel. cost $$$R&R Difficult
SpO2 sensor / cable
Class Frequent wear itemRel. cost $$R&R Easy
Battery pack
Class Periodic replacementRel. cost $$R&R Fairly easy
Thermal print head / paper
Class Periodic replacementRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Patient cable set (ECG / IBP / SpO2 / temp) | Frequent wear item | $$ | Easy |
| NIBP cuff and hose | Frequent wear item | $ | Easy |
| Internal NIBP pump / valve | Major service part | $$$ | Difficult |
| SpO2 sensor / cable | Frequent wear item | $$ | Easy |
| Battery pack | Periodic replacement | $$ | Fairly easy |
| Thermal print head / paper | Periodic replacement | $ | Fairly 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 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: NIBP problem
- Leak-test the cuff and hose.
- Run the monitor's NIBP calibration verification.
- Check for a kinked hose or a positional patient limb.
- Verify NIBP against a reference / simulator.
- Refer the monitor for internal pump / valve service if it persists.
Symptom: SpO2 no signal
- Fit a fresh SpO2 sensor and check the site.
- Swap the SpO2 cable.
- Confirm the pleth and signal-quality indicator.
- Replace the SpO2 module if a good sensor and cable do not fix it.
- Verify against a simulator.
Technical Specs
- Height
- 6.75 in
- Length
- 3 in
- Weight
- 3 kg
- Width
- 8.5 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
Software: Audible alarm may be silenced if changed from the factory setting
Related calculators
From BioLab, for work done with this kind of equipment.
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