Wearable liquid supplying device for human insulin injection

A wearable liquid supplying device for human insulin injection, comprising:

• at least one main body having at least one accommodation space;
• at least one ring belt having two ends connected to two sides of the main body;
• at least one substrate disposed in the accommodation space of the main body;
• at least one liquid storage chamber disposed on the substrate for storing insulin liquid and having at least one liquid storage outlet;
• at least one flow-guiding-and-actuating unit disposed on the substrate, wherein the flow-guiding-and-actuating unit has at least one liquid guiding channel in fluid communication with the liquid storage outlet of the liquid storage chamber and has at least one liquid guiding outlet in fluid communication with the liquid guiding channel, wherein the flow-guiding-and-actuating unit is enabled to transport the insulin liquid and then discharge the insulin liquid through the liquid guiding outlet;
• plural switching valves having at least one first switching valve disposed in the liquid storage outlet and at least one second switching valve disposed in the liquid guiding outlet;
• at least one microneedle patch disposed under the flow-guiding-and-actuating unit to seal the liquid guiding outlet and having plural microneedles with hollow structures for puncturing into skin of human body via microinvasive technology so as to inject the insulin liquid into subcutaneous tissue of the human body;
• at least one sensor disposed on the substrate and configured to be in contact with the skin of the human body for measuring a blood glucose level in sweat and generating measured data correspondingly;
• and
• at least one driving chip disposed on the substrate and configured to control the actuation of the flow-guiding-and-actuating unit, control open/closed states of the plural switching valves, receive the measured data from the sensor and determine an action according to the measured data from the sensor;
• wherein when the ring belt is worn on the skin of the human body, the plural microneedles of the microneedle patch are punctured into the skin of the human body, wherein when the sensor measures the blood glucose level in the sweat from the skin of the human body and generates at least one specific measured data correspondingly, the driving chip controls the actuation of the flow-guiding-and-actuation unit, controls the first switching valve in the liquid storage outlet to be in open state and controls the second switching valve in the liquid guiding outlet to be in open state so that the insulin liquid within the liquid storage chamber is discharged through the liquid guiding outlet and flows into the microneedle patch, whereby the insulin liquid is further discharged through the plural microneedles with the hollow structures and injected into the subcutaneous tissue.