These being people with unrecognized hypoglycemia where by their life is in danger. Your immune system becomes compromised, putting you at increased risk of infections. The biggest benefit, is these drugs bring sugars under control without increasing the risk of hypoglycemia.
There are many products available, the newer analogs are where the benefit lies in ease of use and limiting the risk of hypoglycemia (see Canadian and American Diabetes association recommendations if you want proof).
This system uses a computer algorithm, a glucose sensor and the insulin pump, all working in unison to keep glucose in control. However the biggest challenge for this to be effective, is that our immune systems don’t like foreign bodies and so will try and attack these new cells.