The product was not returned for investigation and the reported failure mode was not confirmed.Alleged failure: fogging and condensation.Probable root cause: laser welding seal failure, distal/proximal window solder failure, damage to optical train, damage to needle, damage to distal or proximal windows, moisture intrusion, end of life wear-out, environmental disturbance: endoscope colder than dew point, environmental disturbance: fluid entrapment between the coupler and eyepiece, junction (eyepiece only), use error.The device manufacture date is not known.The failure mode will be monitored for future reoccurrence.
|