Medical device having an indicator field sensitive to an environmental parameter

Abstract

A medical device includes a medical tool such as an inserter for a continuous glucose monitor. Typically a housing of the medical tool has an indicator area with an indicator field that irreversibly changes its appearance at a predetermined environmental parameter condition. In exemplary embodiments, the predetermined environmental parameter condition can be a predetermined humidity, a change in a predetermined humidity condition, a predetermined temperature or a predetermined temperature change. A controller is connected to the medical tool and is configured to determine the appearance of the indicator field at the time of use of the medical tool and is also configured to control the function of the medical tool based upon the determined appearance of the indicator field.

Dependencies are inferred from the claim text.