How does the insulin pump work?

I have worn some version of an insulin pump for about 20 years.

The pump is programmed to give you a steady "stream" of insulin continuously (basal rate). When you eat something, you program in an additional amount of insulin to cover the carbohydrates you consume (bolus).

Most pumps are about the size of a pager. You fill a reservoir in the pump with insulin, this reservoir connects via a slender tube to a flexible "needle" (called a canula) that is inserted directly under the skin (subcutaneous). This needle is the only one you ever use on youself and remains connected to you for anywhere from 1 to 4 days (depending on your skins "tolerance").

The isea is that it "mimicks" a pancreas. The programming in the pump can be adjusted for activity levels, illness, etc.

They are extremely expensive ($3,000.00-5,000.00). Most are very rugged, built to withstand pretty rigorous activity.

The only thing I'd like more than mine is a cure.

For more info:
http://www.healthbeings.com/health/getting-to...

or

http://www.diabetesnet.com/diabetes_technolog...

Hope this helps.