A new type of implantable glucose sensor based on hollow micro-needle is studied and fabricated used for continuous monitoring on human blood glucose concentration. The hollow micro-needle is constituted by two same slot-type stainless steel needles used as working electrode and auxiliary electrode respectively

which glued together with silicone rubber

a Ag / Ag Cl filament is placed in the hollow micro-needle as reference electrode

and glucose oxidase is placed on the tip of the micro-needle. The experimental results show that linear range of the sensor is 3

22 mmol / L with glucose concentration

sensitivity is 1. 11 μA / mmol / L

response time is 10 s

and with good anti-jamming performance.