Date of event: date of event was approximated to (b)(6) 020 as no event date was reported.(b)(4).Investigation results: visual examination of the returned complaint device found that the needle was indicating 0 atm.Functional evaluation was performed, and the device was pressurized using 35 ml of sterile water for 30 seconds; no leak was observed.However, the needle of the gauge did not move and remained in vac position.Based on the available information, it is most probable that the manner in which the device was handled and manipulated may have caused the encountered failure, as applying excessive pressure to the device and/or excessive manipulation without enough care during the procedure could induce the defects found in this device.However, since no specific failure was reported, the more probable cause could not be established due to lack of information.Therefore, the most probable root cause is cause not established.A review of the device history record (dhr) was performed and confirmed that this device met all material, assembly and performance specifications.
|