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Here’s one for the increasing market for power wheelchairs and scooters created by the aging baby boomer generation. All of these units use some type of joystick controller. Almost all use one of roughly 3 makes of controller unit. The rubber covers on these joysticks do wear off or split. They can be expensive to replace, both in parts and labor. Also, certain disabilities affect hand-function in such a way that makes use of small joysticks difficult. I’ve seen many CF patients using hollowed-out tennis and rubber-exercise balls inserted in the stick for proper grip. I believe this is, as of yet, a truly untapped market. (more…)