If they can get their hands on it, they can copy it.
They can get their hands on anything in country, so it probably has already been copied.
The med device market in asia is stiffly regulated to x number of implants per year, regardless of how many people actually need or would benefit from them. The number of implants allowed varies by country, but it is tightly controlled.
I do work for a competitor of Medtronic.
I worked in the same field, albeit with the export of US made Class I devices, and both minimum and maximum pricing policies were fairly common. Hard to monitor and enforce, but common. In the U.S. at least they're also generally recognized as legal. It's one of the few ways a company can try to protect its brand value and its authorized dealers from grey market sharks. The Chinese just don't play by the same set of rules. And you're right, if they can get their hands on a product they'll copy it down to the flaws in the housing mold.