Micromed MYOHANDY Matrix
Micromed · Model MYOHANDY Matrix
• Ultra compact Amplifier of the Matrix light series with: - Sampling Rate up to 65536 Hz for Every Channel - 16 bit Analog/Digital Conversion - Integrated Electric, Acoustic and Visual-LED Stimulators - Additional 3rd Channel for Temperature Probe - 3 Different Inputs for Every Amplifier (DIN, TouchProof, Lemo) - LCD Display and Full Control Keypad on the Headbox • No need of any External Docking Station • USB Connection to the Laptop Computer • Best Quality in EMG: - Unlimited needle EMG recording and playback - Saving time customizable protocols for every exam - Maximum flexibility in Single Fiber EMG - Automatic Report Generation during Exam Execution (WORD® compatibile) • Perfect Accuracy in Evoked Potentials: - Stimulation artifact free recordings - Fully adjustable rejection thresholds - High quality acoustic and visual stimulations - Advanced filters for better signal quality - Complete Control of Pattern Reversal • Complete Custom Setup of the Acquisition Protocols • Possibility of Expansion with: - 5, 9, 13 or 17 Channel matrix plus energy system - EEG of the HANDYEEG and BRAIN SPY series - Intra Operative Monitoring (IOM) package • Possible Network Integration with: - Centralized Data Storage - SQL Database - Interface to Hospital Database • Compatible with Magnetic and Laser Stimulators • Full Management of Trigger IN/OUT • Possibility to operate with dedicated Keypad and Foot pedal
Key tips
- ·Electrode impedance drives data quality more than almost any other single factor - check it before assuming an amplifier fault.
- ·Pre-case verification of intraoperative monitoring equipment isn't optional - a mid-case failure has direct surgical-decision consequences.
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.
Electrode impedance high
MediumSymptoms: Noisy / flat channels, impedance alarm.
Root cause: Dry gel, poor contact.
Amplifier channel fault
MediumSymptoms: Dead channel, artifact.
Root cause: Front-end amplifier failure.
Stimulator output fault
MediumSymptoms: No stimulus delivered.
Root cause: Stimulator circuit wear.
Grounding / isolation issue
LowSymptoms: 50/60 Hz interference.
Root cause: Shield/ground break.
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.
Amplifier channel module
Class Periodic replacementRel. cost $$$R&R Difficult
Stimulator cable
Class Periodic replacementRel. cost $$R&R Fairly easy
EEG electrode cap / cup
Frequent R&R.
Class Periodic replacementRel. cost $$R&R Easy
Patient electrode gel
Consumable.
Class ConsumableRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Amplifier channel module | Periodic replacement | $$$ | Difficult |
| Stimulator cable | Periodic replacement | $$ | Fairly easy |
| EEG electrode cap / cup Frequent R&R. | Periodic replacement | $$ | Easy |
| Patient electrode gel Consumable. | 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.
- ·Electrode / lead impedance check
- ·Amplifier calibration
- ·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: Electrode impedance high
- Confirm the presentation - typically noisy / flat channels, impedance alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: dry gel, poor contact.
- 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 eEG electrode cap / cup 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: Amplifier channel fault
- Confirm the presentation - typically dead channel, artifact - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: front-end amplifier failure.
- 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 patient electrode gel 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
- 3.5 cm
- Length
- 11.5 cm
- Weight
- 300 g
- Power Source
- Cable Power Supply or Battery Type “AA”
- Noise
- Lower than 0,5 µVrms
- Width
- 9.5 cm
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Neurology / EEG lab
- ICU (continuous EEG monitoring)
- Operating Room (intraoperative monitoring)
Documents & Manuals
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