Which tool is commonly used by BMETs to repair malfunctioning medical devices?

Hand tools are essential for Biomedical Equipment Technicians (BMETs) when it comes to repairing malfunctioning medical devices. These tools typically include screwdrivers, pliers, wrenches, and specialized medical device repair tools. They allow BMETs to access, manipulate, and replace components of the medical equipment effectively and safely.

The nature of medical devices often requires precise and careful handling, which hand tools facilitate. For instance, small, intricate components of a device may only be accessed using specific types of screwdrivers or pliers designed for delicacy and precision. Moreover, hand tools are versatile and can be used for various tasks, making them indispensable in the maintenance and repair of diverse medical equipment.

Other options, such as computer software, have their roles in diagnostics and performance analysis but do not physically help in repairing equipment. Meanwhile, marketing materials are unrelated to the hands-on repair work BMETs engage in. A hammer, while useful in certain repair contexts, is generally not appropriate for the precise and delicate work required in medical device maintenance. Thus, hand tools are the correct choice due to their direct applicability and necessity in the repair process.