Elmed ESU 120
Elmed · Model ESU 120
THREE DISTINCTIVE RADIO FREQUENCY OUTPUT MODES WITH AUTOMATIC OUTPUT COMPENSATION IN ALL MODES. Mode I (Macro Output. Pure cutting power by means of non modulated RF-current and blended power by modulated RF-current for cutting and coagulation. Mode II (Micro Output RFTA). Timed by the automatic timing circuit, low power level up to 10 W radio frequency current at a low voltage that generates low tissue temperaturespecifically for Radio Frequency Thermal Ablation (uvulopalatoplasty andtongue base reduction). Mode III Bipolar non-modulated current for general bipolar surgical procedures and bipolar submucosal turbinate surgery according to Dr. Dennis. DIGITAL READOUT Each mode has an independent digital wattage readout, as does the timing circuit for Radio Frequency Thermal Ablation. SAFETY CIRCUIT Automatic sensing device cuts off the output if the indifferent patient circuit is defective, and gives visual and audible alarm. Reusable or disposable electrodes may be used. Optional Return Electrode Monitor (REM) may be installed at extra cost. The operation of the ELMED ESU 120 M/M DIGITAL with SMART-O-MATIC is extremely easy. The generator is activated by means of a single pedal footswitch. SMART-O-MATIC CIRCUIT Our automatic output compensation circuit provides the desired output for all electrodes or tissue conditions. The automatic range control requires no readjustment within the set range. AUTOMATIC TIMING CIRCUIT The automatic timing circuit is triggered by the footswitch. The time can be selected between 1-10 seconds and is shown on the digital display and it will cut off the current flow as the time has expired, or when the surgeon removes his/her foot from the footswitch. It is reactivated to the same preset specifications by depressing the footswitch.
Key tips
- ·Never defeat or bypass a return-electrode monitoring (REM) alarm to finish a case - it's a direct burn risk.
- ·Verify OR table battery backup - a table that loses power mid-procedure is a real, documented incident type.
- ·Track surgical light lamp-hours rather than waiting for failure - a sudden failure mid-case is avoidable.
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: No cut / coag effect, "high impedance" or output-error message, output shuts down.
Root cause: Poor electrode contact or a dry field, a damaged handpiece / cable, a return-electrode (REM/NESSY) fault, or an output-stage fault.
Return-electrode (patient-plate) contact-quality alarm
MediumSymptoms: REM / NESSY / plate alarm, monopolar output inhibited.
Root cause: Poorly applied or dried split dispersive pad, a pad-cable fault, or the contact-quality-monitor circuit.
Bipolar / vessel-sealing output fault
MediumSymptoms: Bipolar or sealing output weak, seal cycle will not complete, instrument not recognised.
Root cause: Bipolar cable / instrument fault or the sealing output stage.
Fails calibration / output drifts after a repair
MediumSymptoms: Output power or the REM circuit outside tolerance on the analyser.
Root cause: Output board or REM circuit needs recalibration - anti-static handling required.
Footswitch / handswitch fault
MediumSymptoms: Output will not activate from the pedal or the handpiece.
Root cause: Footswitch or handswitch / cable fault.
Touchscreen / display / boot fault
LowSymptoms: Unresponsive touchscreen, will not power on or boot, fan / thermal alarm.
Root cause: Display, power supply, control board, or a cooling-fan fault.
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 instrument / handpiece cables
Class Periodic replacementRel. cost $$R&R Easy
Split dispersive (return) pads
Class ConsumableRel. cost $R&R Easy
Footswitch
Class Periodic replacementRel. cost $$R&R Fairly easy
Bipolar / sealing cable
Class Periodic replacementRel. cost $$R&R Easy
RF output board
Recalibration required after replacement; anti-static handling.
Class Major service partRel. cost $$$$R&R Difficult
Cooling fan
Class Major service partRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Reusable instrument / handpiece cables | Periodic replacement | $$ | Easy |
| Split dispersive (return) pads | Consumable | $ | Easy |
| Footswitch | Periodic replacement | $$ | Fairly easy |
| Bipolar / sealing cable | Periodic replacement | $$ | Easy |
| RF output board Recalibration required after replacement; anti-static handling. | Major service part | $$$$ | Difficult |
| Cooling fan | Major service part | $ | Moderate |
Relative cost: $ lowest · $$$$ 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.
- ·Pre-case functional check
- ·Electrosurgical return-electrode cable inspection
- ·Table hydraulic / mechanical inspection
- ·Annual electrical safety test and full PM
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 or low RF output / high impedance
- Confirm good electrode-tissue contact and an adequately wetted field.
- Inspect the handpiece / instrument and cable for damage; substitute known-good.
- Check the split dispersive pad is well applied with full skin contact and a good cable.
- Verify output into a resistive test load with an electrosurgical analyser.
- Replace the output board and recalibrate if output is confirmed absent (anti-static workplace).
Symptom: Return-electrode / plate alarm
- Re-apply a fresh split dispersive pad with full skin contact over well-perfused muscle.
- Check the pad cable and connector.
- Try a known-good pad.
- Run the contact-quality-monitor calibration if it still alarms with a good pad.
- Do calibration on a non-conductive surface.
Technical Specs
- Height
- 6 in
- Length
- 15.5 in
- Weight
- 14 lbs
- OutPut Frequency
- 500 kHz
- Output Power
- 117 V 60 Hz
- Width
- 12.5 in
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Operating rooms
- Procedure rooms
- Interventional suites
Documents & Manuals
No documents available for this device yet.
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