Physiological signal monitoring system for fast assembly

A physiological signal monitoring system for measuring a physiological signal of an analyte in a living body, comprising:

• an implantation device including:
• a housing having a bottom opening;
• an implantation module including a main cover, a main body buckled to the main cover to jointly define a space, an implanting device having a first elastic element, and a needle extracting device having a second elastic element, wherein:
• the implanting device and the needle extracting device are accommodated inside the space,
• the first and the second elastic elements are configured to be disposed and pre-compressed in the implanting device and the needle extracting device, respectively, prior to sensor implantation,
• the implanting device further includes a needle implanting seat, and
• the first elastic element is compressed between the needle implanting seat and the main cover resulting in a pre-compressed first elastic element,
• the needle extracting device further includes a needle extracting seat, the second elastic element is compressed between the needle implanting seat and the needle extracting seat resulting in a pre-compressed second elastic element, and the second elastic element is arranged inside the first elastic element,
• the implantation module further includes a constraint element disposed on the main cover, a limiting element, and a limiting groove,
• the constraint element and the limiting element are disposed onto the needle implanting seat, and
• the constraint element is configured to be disengaged from the limiting groove to enable the limiting element to deviate from the limiting groove to release the needle extracting seat from a restriction of the needle implanting seat.