A hybrid insulin pump, also known as a hybrid closed-loop (HCL) system, is an advanced system for managing type 1 diabetes. It automates some aspects of insulin delivery, but still requires user input.
Understanding Hybrid Closed-Loop Systems
These systems link continuous glucose monitoring (CGM) with insulin pump technology to monitor blood glucose levels and automatically adjust the amount of insulin delivered through the pump. While not fully automated, they significantly reduce the burden of diabetes management.
How Hybrid Closed-Loop Systems Work:
- Continuous Glucose Monitoring (CGM): A sensor continuously tracks glucose levels in real-time.
- Insulin Pump: Delivers insulin based on pre-programmed settings and automatic adjustments.
- Algorithm: An algorithm analyzes CGM data and calculates insulin doses, which are then automatically delivered by the pump.
Key Features & Benefits:
- Automated Insulin Adjustments: Automatically increases, decreases, or suspends insulin delivery based on CGM readings.
- Reduced Hypoglycemia: Helps prevent low blood sugar by proactively reducing insulin when glucose levels are dropping.
- Improved Time in Range: Aims to keep blood glucose levels within a target range for a greater portion of the day.
- User Input Still Required: Users typically need to input carbohydrate intake at mealtimes and may need to manually adjust insulin doses in certain situations.
- Example: For example, a user would still need to bolus insulin to cover food intake.
In essence, a hybrid insulin pump automates many of the minute-to-minute insulin adjustments needed to manage type 1 diabetes, while still requiring user involvement for meals and other activities.
