There are many different areas of medical engineering that involve the use of plastics. Laser plastic welding has been an established part of certain applications for years. The medical devices market is a prime example of an area where products containing laser-welded components have been introduced. Microfluidics and chips for analytics are particularly worthy of mention in this regard. In many applications, these kinds of components also take the form of disposables, which can be found in various areas of medical engineering. Other products or devices have assemblies welded onto them. These usually have to be joined in such a way that they are sealed off tightly from the environment. Frequent application areas for medical engineering products include doctor's offices and hospitals. Consequently, the area of hospital care involves a large number of products that are partially made of plastic and are also laser welded.