Glucose monitoring sensor of voltage measurement type including a supercapacitor and a continuous measurement method of glucose using the same
AssigneeIndustry-Academic Cooperation Foundation, Yonsei University
InventorsJin Woo Park, Hye Jun Kil
Life of this patent
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Abstract
A voltage measurement type glucose sensor comprises a microneedle array including a flat part and a plurality of microneedles located on one surface of the flat part; an enzyme layer located on a surface of the plurality of microneedles and including glucose oxidase; a supercapacitor located on the other side of the flat part; and a wireless communication module electrically connected to the supercapacitor, and a glucose measurement method using the same. The glucose sensor is self-driving without the need to apply separate external power, improving the lifespan of the device and enabling close monitoring of accurate glucose levels in real time.
Claims14
A glucose sensor, comprising:
- a microneedle array including a flat part and a plurality of microneedles located on one side of the flat part;
- an enzyme layer located on a surface of the plurality of microneedles and including glucose oxidase;
- a supercapacitor located on another side of the flat part;
- a wireless communication module electrically connected to the supercapacitor;
- and
- a circuit connected to the supercapacitor and including a timer and a switch, the circuit being configured to discharge the supercapacitor by short-circuiting a first electrode and a second electrode of the supercapacitor through the switch at predetermined time intervals.
A continuous glucose measurement method, comprising:
- inserting a glucose sensor into a skin to collect tissue fluid, wherein the glucose sensor comprises a microneedle array including a flat part and a plurality of microneedles located on one side of the flat part, an enzyme layer located on a surface of the plurality of microneedles and including glucose oxidase, a supercapacitor located on another side of the flat part, a wireless communication module electrically connected to the supercapacitor, and a circuit connected to the supercapacitor and including a timer and a switch, the circuit being configured to discharge the supercapacitor by short-circuiting a first electrode and a second electrode of the supercapacitor through the switch at predetermined time intervals;
- storing charge generated by oxidation of glucose contained in the tissue fluid in the supercapacitor;
- quantifying a glucose level by periodically discharging the supercapacitor through the circuit, and measuring a voltage change of the supercapacitor;
- and
- transmitting the glucose level to an external device.
Dependencies are inferred from the claim text.