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The subject device was returned and the reported lot number was confirmed from the returned device.Visual/microscopic inspection revealed that the catheter shaft was broken at 54 mm from the proximal end of the hub (adjacent to the strain relief).Due to the automated mes system there are controls in the manufacturing process to ensure the product met specifications upon release.The reported event is covered in the device directions for use (dfu).As well, the risk of the reported event is documented in the risk documentation and there are current controls to mitigate the risk of the as analysed event.As per the available information, the device was damaged being pushed through the balloon catheter.The reported event was confirmed based on the damage noted during analysis.An assignable cause of procedural factors was assigned to the as reported "catheter shaft kinked/bent" and the as analysed "catheter shaft broken/fractured inside patient/during use", as the issue is associated with a product that meets stryker design and manufacture specifications and was used in according with the dfu, but due to procedural and/or anatomical factors during use, the product performance was limited.
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