Hi J.!
I am type 1 with adult onset as well. I was diagnosed 10 yrs ago when I was 26 and after a few years went on a "tight control" regiment, meaning testing at least 6 x per day and taking 5 shots per day. It was a challenge at times to make sure to have all my supplies with me and to keep my insulin cold enough, especially when we were traveling, etc.
In 2004 I got my pump and I LOVE it!!!! Yes, I still have to check my blood sugars at least 6 times a day and I still have to count my carbs and watch what I eat and how exercise etc affects my bloodsugars. But I'm ok with that and I love the advantages that come with having a pump - I don't have to worry about carrying insulin, syringes, alcohol wipes, etc everywhere I go!
Ok - this is how it works (when I say "you", I am referring to the diabetic / your husband): The pump is about the size of a pager and most people will think that's what it is until you tell them otherwise. It's kind of difficult for me to explain how it attaches to your body, so you may want to check the web for pics or something (just google insulin pumps). However, it does attach to your body with what is called an "infusion set" and a thin plastic tube connects the pump to the infusion set. When you're on the pump, you only use short-acting insulin (i.e. Humalog) and your healthcare team helps with programming the pump to give you a small amount of insulin every hour of the day. This is called the "basal rate" and basically takes the place of the long-acting insulin that your husband is probably taking now once or twice a day.
The insulin amount you need to cover your meals is called "bolus". My pump has a "bolus wizzard" - when I am ready to eat, I check my bloodsugar, enter that in my pump, then I enter how many grams of carbs I am going to eat and it will calculate the amount of insulin I need to take, based on the my insulin sensitivity and carb ratio that my doctor gave me to program the pump with.
Ok, sorry this got so long. Please feel free to send me a personal message if you or your husband have any other questions and I'll be glad to give you my email address.
Take care,
Nicole