I’m going to give you some clarity on opened vs. closed system breast pumps. Let’s move on to the main and the most significant difference! When you use a breast pump with an open system, it means that there’s a small chance that your milk may get into some parts of the pump. For example, it can even get into the tubing or the motor.
Generally, breast pumps with closed systems are designed the other way. A closed system doesn’t allow milk to get into the pump parts. Well, it’s just closed off to the milk. Most brands of breast pumps are closed systems. However, only one has an open system. Those are Medela pumps. Almost all of them are open system pumps.
Just for you to know: a closed system pump has a small barrier between the pump and breast milk, while an open system pump has no barrier. It’s gross, but if your milk gets into the tubing or the motor, you have to dry it out before using it again. I prefer and always choose a closed system pump because I can pump when I’m lying as it doesn’t cause a milk leak. It’s just perfect!