(b)(4).Device evaluated by mfr: unit returned with its original pouch batch 17614450.The unit returned has distal end kinked, as part of overall visual revision.The returned device matches with upn provided by the customer.The device has a kink at 14mm from the tip while in the neutral position (between ring 1 and 2).In addition the ring #1 has broken adhesive and fluids under it.The steering knob and the tension control knob functioned properly on both lock and unlock positions.Both curves passed the dimensional test.As per x ray image attached, the center support is kink.The manufacturing batch record review confirmed that the device met all material, assembly and performance specifications.The most probable root cause is operational context as device performance was limited due to anatomical procedural factors.(b)(4).
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