What it is and the problem it solves
An insulin pump is a medical device for continuous subcutaneous insulin infusion (CSII). It solves the inflexibility of multiple daily injections and the metabolic instability caused by slow-acting insulin’s rigid pharmacokinetics.
How it works
It delivers insulin continuously under the skin via a cannula and tubing. A pump unit holds a disposable insulin reservoir and drives flow using a motorised mechanism. Basal rates are programmable across 24 hours. Bolus doses are manually triggered at mealtimes. Newer models may eliminate tubing or use semi-disposable pumping mechanisms.
What works
Programmable basal rates deliver varying insulin amounts across the day. Rapid-acting insulin enables tighter glycaemic control and lower HbA1c than syringe-based dosing. It supports flexible therapy when combined with glucose monitoring and carb counting.
What does not
It does not replace blood glucose monitoring or carbohydrate counting. It does not eliminate hypoglycaemia. It does not integrate closed-loop control unless paired with separate glucose sensing—no claim in the source supports autonomous regulation.
What it changes
It replaces fixed-schedule, slow-acting insulin regimens with time-varying rapid-acting insulin delivery. This reduces nocturnal hypoglycaemia linked to the dawn phenomenon and loosens constraints on meal timing and exercise.
Is it worth your time
Yes—if you manage type 1 diabetes and require flexible, precise insulin delivery without multiple daily injections. It demands active engagement with glucose monitoring and carbohydrate counting. It does not automate decision-making.
