A system and method for closed-loop control of artificial pancreas

Abstract

The invention provides a closed-loop control method in an artificial pancreas and an artificial pancreas applying the method. The method includes sensing a patient's activity level by at least one motion sensor and providing a signal to at least one processor; and the processor adjusts a series of related algorithms based in part on the signal to provide more accurate and reliable data as an ideal treatment plan The basis of the system, and the processor sends instructions to make the artificial pancreas automatically perform corresponding operations to achieve closed-loop control.

Description

technical field [0001] The present invention generally relates to medical devices, and more specifically, to a system and method for closed-loop control in an artificial pancreas. Background technique [0002] In a normally healthy person, the pancreas produces insulin and releases it into the bloodstream in response to elevated blood sugar levels. Beta cells present in the pancreas produce and secrete insulin into the blood as needed. If the beta cells lose function or die, the condition is called type I diabetes, and if the beta cells produce insufficient amounts of insulin, the condition is called type II diabetes, and insulin must be provided to the patient's body from another source. [0003] Traditionally, because insulin cannot be taken orally, medicinal insulin has been administered primarily by injection. Recently, there has been an increase in the use of infusion pumps, especially insulin pumps that infuse insulin for people with diabetes. For example, an extern...

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Problems solved by technology

Similarly, if a patient is exercising, his interstitial glucose values ​​sensed by the glucose sensor may fluctuate widely due to frequent changes in interstitial fluid concentration caused by momentary squeezes or stretches, but his glucose levels should not be determined to be abnormal

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