(b)(4).Teleflex received the device for investigation.The reported complaint of blood in helium pathway is confirmed.The iab bladder had a full thickness abrasion, which caused blood to enter the helium pathway.The appearance of the abraded area is consistent with repeated contact with calcified plaque on the aortic wall.No other leaks were detected during functional testing.A device history record (dhr) review was conducted for the lot number with no relevant findings.The device passed all manufacturing specifications prior to release.Teleflex assessed the risk for the reported complaint.There are no new or revised risks.This will be monitored for any developing trends.No further action required at this time.Other remarks: additional information was received.It was reported that the patient had heavy calcification of artery, so the user had difficulty of inserting the iab in this patient.For the above reason, there were some fine pinholes found on the balloon.The user confirmed the condition of the iab and iabp every a couple of hours, but failed to prevent blood backflow in the iabp.As a result, the iab and iabp were immediately removed but the therapy with pcps was continued and consequently the therapy was successfully finished.
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