Patent ID: 8825150

Claim:
A bio-impedance measurement apparatus coupled to a remote monitor station in a wireless manner, comprising: a flexible band member configured to be fastened around a body portion, comprising an inner surface being adjacent to a skin region of the body portion when the flexible band member is fastened to the body portion; two probe sets attached to the flexible band member, each probe set comprising a probe, wherein the probe of one probe set includes a tip portion configured to protrude from the inner surface to pierce the skin region so as to be located adjacent to an acupuncture point, and the probe of another probe set is configured to contact the skin region as an electrical ground; a measurement device disposed on the flexible band member, electrically coupled to the two probe sets, configured to provide a signal to the acupuncture point and to measure impedance of the acupuncture point; and a wireless device coupled to the measurement device, configured to transmit an acupuncture code corresponding to the acupuncture point and the impedance information of the acupuncture point to the remote monitor station; wherein the wireless device is coupled to an antenna and comprises: a rectifying module coupled to the antenna, configured to convert microwave energy into DC electricity; an oscillating module coupled to the antenna, configured to generate clock signals; a modulator coupled to the antenna, configured to modulate signals to be sent; and a thin film capacitor coupled to the rectifying module, wherein the rectifying module comprises a lower electrode layer comprising doped p-type polysilicon, an upper electrode layer, and a dielectric layer disposed between the lower and upper electrode layers; wherein the upper electrode layer comprises a chromium layer, a nickel layer and a gold layer, and the dielectric layer comprises silicon nitride.