China NMPA Product Recall - Cerebrospinal fluid shunt and accessories, lumbosacral-abdominal shunt assembly

Medtronic (Shanghai) Management Co., Ltd. initiated a voluntary Class III recall for specific models of its Cerebrospinal Fluid Shunts and Accessories, and Lumbosacral-peritoneal shunt assemblies. This action, reported to the National Medical Products Administration (NMPA) on February 20, 2017, and published on April 6, 2017, addresses a manufacturing issue impacting products globally. The problem was identified through an investigation following five global reports between February 2015 and November 2016. The core issue involves the accumulation of biological debris within the pressure regulating valve, which can restrict the free rotation of an internal magnet. When exposed to a 3.0 Tesla MRI or stronger magnetic fields, this restriction can prevent the magnet from synchronizing with the external field, potentially damaging the regulating mechanism. Although no patient illnesses, injuries, or deaths have been reported, this could lead to discrepancies between device settings indicated by hand tools and those determined by radiographic imaging. Medtronic's required actions include notifying customers of this issue. Healthcare professionals are advised to utilize radiographic imaging to confirm valve settings if any adjustment or reading difficulties are encountered. If readings from indicator tools conflict with radiographic images, radiographic imaging must be used to ascertain the accurate valve placement.