Stryker MultiGen
Stryker · Model MultiGen
Multi-Lesioning: Handles up to 4 lesions simultaneously and with independent control Offers a multiple start option as well as an individual start option to deliver RF energy Performs monopolar and bipolar procedures at the same time Reduces overall procedure time Parallel Bipolar: Allows 2 parallel bipolar procedures to be performed simultaneously Features an option to perform thermal and pulsed procedures at the same time Intradiscal Lesioning (IDL): Offers pre-programmed time and temperature step profiles Allows time and temperature adjustments on the fly.
Key tips
- ·When no category-specific guidance fits, default to the manufacturer's own service manual and the general troubleshooting method in the Engineer's Guide.
- ·Run an incoming and annual electrical safety test regardless of how niche the device is.
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.
No or low RF output / high impedance cut-out
HighSymptoms: Lesion not forming, "high impedance" or "open circuit", output shuts down.
Root cause: Poor electrode contact or a dry field, a damaged RF cable or probe, or a grounding-pad fault.
Temperature control / thermocouple fault
HighSymptoms: Tip temperature reads implausibly, will not reach or hold the set lesion temperature.
Root cause: Damaged thermocouple in the cannula / probe, or a temperature-control fault.
Grounding-pad / neutral-electrode alarm
MediumSymptoms: Pad-contact-quality alarm, output inhibited.
Root cause: Poorly applied or dried dispersive pad, or a pad-cable fault.
Nerve-stimulation (motor / sensory) fault
MediumSymptoms: Stimulation test gives no or erratic response.
Root cause: Stimulation output stage or cable / probe fault.
Console / display fault
LowSymptoms: Unresponsive display, will not power on.
Root cause: Display, power supply, or control board.
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.
Reusable RF connector cable
Class Periodic replacementRel. cost $$R&R Easy
RF probes / cannulae with thermocouple
Class Frequent wear itemRel. cost $$R&R Easy
Dispersive (grounding) pads
Class ConsumableRel. cost $R&R Easy
Footswitch
Class Periodic replacementRel. cost $$R&R Fairly easy
Power supply / control board
Class Major service partRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Reusable RF connector cable | Periodic replacement | $$ | Easy |
| RF probes / cannulae with thermocouple | Frequent wear item | $$ | Easy |
| Dispersive (grounding) pads | Consumable | $ | Easy |
| Footswitch | Periodic replacement | $$ | Fairly easy |
| Power supply / control board | Major service part | $$$ | 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.
- ·Follow the manufacturer's PM schedule
- ·Perform incoming and annual electrical safety testing per facility biomedical program
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: No / low RF output or high impedance
- Confirm good electrode-tissue contact and an adequately wetted field.
- Inspect the RF cable and probe for damage; substitute known-good.
- Check the dispersive pad is well applied with full skin contact and a good cable.
- Verify impedance is in the expected range on the display.
- Replace the cable or probe as isolated; refer the console if output is still absent into a test load.
Symptom: Tip temperature reads wrong
- Substitute a known-good probe / cannula.
- Check the thermocouple connection at the cable.
- Compare the displayed temperature at rest to room temperature.
- Replace the probe if the thermocouple is damaged.
- Verify the generator holds the set lesion temperature into a test load.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Varies by device - check the unit's own manual for facility placement guidance
Documents & Manuals
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Stryker Instruments is voluntarily recalling the Care Instructions/Instructions for Use packaged with the Radiofrequency (RF) MultiGen Generator, because the instructions for use incorrectly contained instructions supporting the sterilization of the MultiGen cables.
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