Medical equipment products, can be used to injection molding machine is mostly a class 1, class 2.
The plastic material should be more or less medical grade, and the machine is also recommended to choose some good.
Pure electric injection molding machine, or DKM oil and electricity composite injection molding machine can be. At the very least, it should be an energy-saving servo machine.
Sent a picture to the subject for reference, injection molding machine style and model