Olympus MH-908 Esophageal
Olympus · Model MH-908 Esophageal
Slim insertion tube of 7.9mm diameter eases passage through narrow or stenotic sections of the esophagus. The MH-908 Ultrasonic Probe is equipped with a cone-shaped metal bougie-like tip for even greater ease of insertion. Monorail Guide-wire System ensures safety during insertion and can be used to support palliation therapy, both before and after endosonographic examination. 7.5MHz Ultrasonic Frequency provides the depth of penetration needed for thorough staging, and generates 360-degree sector scan images facilitating exact tumor delineation. A thorough exploration of the celiac trunk area for lymph node identification is provided by the MH-908’s angulation capability of 130-degrees UP, 90-degrees DOWN, and 90-degrees LEFT/RIGHT.
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.
Element drop-out / dead elements
HighSymptoms: Black vertical band in the image, halved sensitivity, artefact that stays with the probe on any port.
Root cause: Cracked or delaminated piezo elements, or broken cable conductors into the array.
Lens / membrane damage or delamination
HighSymptoms: Near-field haze, bubbles under the lens, visible crack or a bite mark (TEE).
Root cause: Impact, aggressive disinfectant, or age; the acoustic lens has lifted from the array.
Connector / strain-relief fault
MediumSymptoms: Image comes and goes when the cable or connector is flexed.
Root cause: Broken conductors at the connector or at the probe strain relief.
Electrical-safety / insulation failure
HighSymptoms: Fails the leakage / insulation test; unsafe for patient contact (critical for intracavitary and TEE probes).
Root cause: Fluid ingress or a lens breach compromising patient isolation.
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.
Transducer (exchange / repair)
Element or cable damage is usually an OEM/third-party repair, not a field fix.
Class Periodic replacementRel. cost $$$$R&R Fairly easy
Connector pins / housing
Class Major service partRel. cost $$R&R Moderate
Acoustic lens / membrane
Class Periodic replacementRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Transducer (exchange / repair) Element or cable damage is usually an OEM/third-party repair, not a field fix. | Periodic replacement | $$$$ | Fairly easy |
| Connector pins / housing | Major service part | $$ | Moderate |
| Acoustic lens / membrane | Periodic replacement | $$$ | Difficult |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
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: Dead band or drop-out in the image
- Confirm the artefact follows the probe onto a second port / system.
- Run the system's transducer element-test if available.
- Inspect the lens for cracks and the cable for kinks.
- Quarantine the probe and arrange an element/cable repair or exchange.
- Do not use an intracavitary/TEE probe that fails the element or leakage test.
Symptom: Image drops out when the cable is moved
- Flex the cable along its length and at both ends while scanning.
- Inspect the connector for bent pins and the strain relief for splits.
- Try the probe on another system to rule the system out.
- Send for a connector / cable repair.
- Re-test electrical safety before returning to service.
Documents & Manuals
No documents available for this device yet.
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