Device history record (dhr): the dhr was reviewed and no anomalies related to the reported failure was observed.Failure analysis - the investigation of the returned device verified the complaint as valid.The insulation sheath is shortened near the handle.Moreover, there is a clearance between the tube and the handle at the laser welding.However, the dimensions of the 2 components are compliant with the specifications.Root cause - the most probable cause of this issue is a defect in the sheathing process.Moreover, this kind of material is fragile and can have a stability defect.A replacement of the sheathing by a coating process is under study.The device is fragile at the laser weld because there is too much clearance between the two parts: the dimensions of the tube d3 is in the lower tolerance and the other part is in the higher tolerance.The dimensions of the 2 parts are incompatible to perform a proper welding, it's a human error during this operation.
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