The subject device was returned to omsc for evaluation.The ultrasonic image was hardly drawn.There was a hole on the sheath at the tip, and the ultrasonic medium leaked out.There was a dent on the sheath at the tip.The inside color was changed.The internal blade could be driven normally.The manufacturing record was reviewed and found no irregularities.Omsc presumed that the ultrasonic image was hardly drawn because the ultrasonic medium inside the sheath leaked out of the damaged part of the sheath.
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