Don't know what product you are talking about? Medical equipment is the hospital with those equipment and supplies, diagnostic, therapeutic, instrumentation, consumables, etc., to agent distribution of these products, it is also feasible. But without experience, it's not easy to get started.
The market commonly used physical therapy equipment, then, basically belongs to the category of neglect, the market demand is very small, pay attention to hit the goods do not go out, it is the same as the money into these things.
Entrepreneurial advice from their own familiar field to start, all lines have earned a loss, not come across what to do.
The medical device industry has a very good future, and the population is aging. If you have hospital connections and enough money, you can consider getting involved. If there is no experience in the industry, and other conditions are again lacking, directly engaged in, the results are not good to say.
Your question is more general, I answered more, for reference.