(b)(4).The device was returned to the manufacturing site for investigation.The manufacturing site reports that a visual exam was performed and it was found that the device was not kinked; however, it was returned torn apart.It was also reported that "the balloon was popped, and a monofilament was inserted to check for any blockage at the inflation lumen.As result, there is no blockage as the monofilament can go through the lumen easily.Non-deflation could be occurred due to several reasons such as it was being bent or kinked during the usage, improper fixation of syringe to the valve or excessive pressure applied during deflation process.Besides that, clamping with hard object, heavy encrustation of salt deposits and the use of inflating fluids such as non-sterile water or saline also may lead to such problem.Furthermore, the balloon with low fill volume than the recommended tends to have the problem.In a standard practice, an empty syringe without plunger is also recommended to be used to drain off the fluid by gravity and avoid creation of vacuum effect and ease deflation process".Based on the condition of the returned sample, the complaint could not be confirmed and the probable cause could not be determined.Teleflex will continue to monitor and trend for reports of this nature.
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