You should definitely speak with a personal injury attorney. You do *not* need to be the purchaser of the equipment to sue; anyone who was injured due to defectively designed or manufactured equipment or products may have a cause of action against the manufacturer. It is also possible, depending on the circumstances, that you might have a cause of action against the gym (if they installed it improperly or maintained it improperly) and possibly against other parties as well (e.g. a distributor or retailer, if the equipment was not bought directly from the manufacter; a contractor who installed). A personal injury attorney can help you understand the strength of your case, what it might be worth, and who might be liable. Good luck.