Final answer:
The maker of a 3D printed faulty bicycle helmet could be held liable for injuries caused, similar to an automobile manufacturer with defects in their products. Governmental oversight and regulations play a role in maintaining safety standards. Health-care workers generally aren't liable if they comply with current standards unless they're aware of the equipment's flaws.
Step-by-step explanation:
If you 3D print a faulty bicycle helmet and someone is hurt using it, there are indeed clear responsibilities to consider. Firstly, the manufacturer or individual who designed and printed the helmet could be held liable if they were negligent in ensuring the safety and reliability of the product. This is similar to a scenario where an automobile manufacturer is held liable for injuries and deaths caused by known defects in their products, such as a faulty brake system. The legal principle at work here is product liability, which holds producers responsible for the safety of their goods.
Moreover, the regulatory and governmental bodies have a role in supervising the creation and distribution of such items. Ensuring that safety standards are met is a part of their mandate to protect public health and safety. Hospitals and health-care workers, on the other hand, typically would not be held liable for using equipment as long as they are following the current standards and protocols, unless they were aware of the equipment being flawed and continued to use it.
In summary, responsibility for a faulty helmet would likely fall on the shoulders of the manufacturer. However, if it can be proved that the health-care professionals had prior knowledge of the defect and still proceeded to use the helmet, they could also potentially be held liable. The overarching theme in these scenarios is the duty to ensure that products are safe for their intended use and to act accordingly when they are not.