Roche Cobas Mira Plus
Roche · Model Cobas Mira Plus
STAT testing capability End point assay method Variable rack system for calibrators, reagents, samples and quality control material Closed primary tube sampling Direct sampling capability Photometric colorimetric optical system.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
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.
Assay / QC failure across a channel or the whole system
HighSymptoms: Controls out of range, calibration fails, flagged results, drift over a shift.
Root cause: Reagent or cuvette issue, lamp ageing, a probe / mixer / wash-station fault, or ISE-module problems.
Sample / reagent probe clog or crash
MediumSymptoms: Short aspiration, no dispense, clot detection, probe-position error.
Root cause: Clogged or bent probe, or a clot in the sample.
Cuvette / reaction-rotor fault
MediumSymptoms: High cuvette blanks, non-uniform results by position, rotor-drive error.
Root cause: Worn / scratched cuvettes or a wash fault, or a rotor-drive fault.
ISE module fault (Na / K / Cl)
MediumSymptoms: Electrolyte results biased or noisy, ISE calibration fails.
Root cause: Aged ISE electrodes / reference, or a pinch-valve / tubing fault.
Water / vacuum / pressure system fault
MediumSymptoms: Multiple station alarms, priming failures, poor wash.
Root cause: Water / DI supply quality, a pump, or a vacuum / pressure regulator.
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.
Sample / reagent probes
Class Periodic replacementRel. cost $$R&R Moderate
Photometer lamp
Class Frequent wear itemRel. cost $$R&R Moderate
Reaction cuvettes / segment
Class Frequent wear itemRel. cost $$R&R Easy
ISE electrodes (Na / K / Cl) & reference
Class Frequent wear itemRel. cost $$R&R Fairly easy
Peristaltic / pinch-valve tubing
Class Frequent wear itemRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Sample / reagent probes | Periodic replacement | $$ | Moderate |
| Photometer lamp | Frequent wear item | $$ | Moderate |
| Reaction cuvettes / segment | Frequent wear item | $$ | Easy |
| ISE electrodes (Na / K / Cl) & reference | Frequent wear item | $$ | Fairly easy |
| Peristaltic / pinch-valve tubing | Frequent wear item | $ | 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.
- ·Daily QC controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
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: Assay or QC failure
- Run fresh controls at all levels.
- Confirm reagents are in date, correctly loaded and mixed.
- Run the photometer check and replace the lamp if energy is low.
- Clean the probes, mixers and wash stations.
- Recalibrate the affected assay / ISE module and re-run QC.
Symptom: Probe clog or crash
- Inspect the probe for a bend or blockage and clear it.
- Run the fluidics prime / wash cycle.
- Check for a clot in the sample.
- Verify liquid-level sensing and probe positioning.
- Replace the probe if aspiration is still short.
Technical Specs
- Height
- 26 in
- Length
- 23 in
- Weight
- 197 lbs
- Width
- 29 in
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
No documents available for this device yet.
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Creatine Kinase (CK) Assay Abnormal calibrations on the cobas c 311/501/502 and COBAS INTEGRA 400 plus Analyzers may lead to erroneous results and misdiagnosis.
- RECALL
COBAS INTEGRA 400 plus and cobas c 111 analyzers Additional Extra Wash Cycle Configurations and/or Batch Mode Needed for Specific Tests Due to Carry-over
- RECALL
A software security issue with Oracles TNS-Listener component has been identified. TNS-Listener is supplied with the Roche COBAS INTEGRA 400/400 plus Analyzers. The Oracle TNS-Listener can be considered as an authentication and redirection component between the client and the database inside the Roche product. This means an attacker could register their own non-Roche database via remote access
- RECALL
The firm has recieved complaints of imprecision and erroneous patient results for calcium on the COBAS INTEGRA and COBAS c 501 system using reagent lots 62601901 and 63020401.
- RECALL
Some of the labels are glossy, resulting in the bar code being difficult to read by the bar code reader.
- RECALL
The lower detection limit (LDL) may be a higher value than stated in the labeling. Note: To resolve this issue, the Digoxin LDL claim has been revised to 0.3 ng/mL for all reagent lots.
- RECALL
Falsely low patient and control results may be reported when the reagent has been on-board for less than the 8 hour use period specified in the labeling.
- RECALL
If foil wrapped packages or other metallic objects are lodged behind the supply drawer, an electrical short may result and high heat generated; this could result in plastic melting and battery leakage for customers using 'C' cell batteries to power their base and could render the system inoperable (system won't turn on) for customers using the A/C adaptor without batteries.
- RECALL
Lack of assurance of sterility.
Related calculators
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