Maquet cardiopulmonary (b)(4) received the product for investigation.Visual control was performed in the laboratory of manufacturer.Pvc 3/8 x 1/16 tube has damages in three places.It can be recognized by the pinch marks of the tube that the tube has burst due to the pressure rollers of the pump.No further abnormalities noted.Trend search was performed: 0 additional complaint were recorded which reported issues are the same since the last 12 months.Dhr was reviewed.A rework record was found for reason 'damaged box' and quantity 2.No any other abnormality was found.Based on the sales figures of the last 12 month following occurrence rate has been calculated: (b)(4)%, which is below 1%.Due to this, no systemic issue could be determined.The available information has been shared internally with getinge therapy application manager.It was stated as: "possible causes for this incident or promoting effects are, but may not limited to:i.Over-occlusion of the corresponding arterial roller pump device hence inadequate occlusion adjustment prior to operation or procedure ii.Inappropriate tubing fixation, such as tubing guide inserts with incorrect dimensions, e.G.1/2" tubing guide inserts for 3/8¿ dimension iii.Inappropriate tubing fixation due to unlocked tubing fixation latch iv.Un-passable guide roller(s) of the corresponding roller pump v.Debris inside the roller head raceway vi.Kink(s) in the corresponding tube as an out of the box issue vii.Bending of the tube or improperly insertion, e.G.Twisted or under tension" according to the investigation results and clinical evaluation, the most probable cause of the failure could be user error.Based on these, complaint could not be confirmed.
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