(b)(4).It has been communicated that the device is not available for evaluation.Without the device it is not possible for codman to conduct a proper investigation.Since a lot number has been provided a review of the manufacturing records will be reviewed.We anticipate that the evaluation will reveal that the device conformed to specifications prior to release.If anything otherwise is found then a follow up report will be filed.If at some point the device does become available, this complaint will be re-opened, evaluated and a follow up report will be filed.Trends will be monitored for this and similar complaints.At the present time this complaint is considered closed.
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V-p valve was found with precipitation , changed another one to complete.The patient is female and (b)(6).Preoperative ct showed the patient with ventricular dilatation.And the patient did ventriculoperitoneal shunt operation on (b)(6) 2017.Shunt tube was inserted into 5 cm, v-p shunt valve pressure was adjusted to 150 mm h2o.The ct ventricle was significantly expanded after operation, and there was no significant improvement in consciousness.Two days after operation, the pressure was adjusted to 120, and 4 days after operation, the pressure was adjusted to 100.There was no significant improvement in consciousness either.And then on (b)(6) 2017, the patient had ventriculoperitoneal shunt exploration operation, it found the v-p shunt valve had precipitate inside which is not clear.Changed another one to complete the second operation.The patient is still in the observation and patient¿s consciousness become a little better.
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