Abstract: The disclosure discloses a surgical instrument which comprises an instrument body and an encapsulated electronic device, wherein the instrument body is partially or completely made of a metal material; the encapsulated electronic device comprises a radio frequency identification chip which is electrically connected with the instrument body; the instrument body, which serves as an antenna of the radio frequency identification chip, is configured to acquire the electromagnetic wave energy so as to activate the radio frequency identification chip. According to the surgical instrument, the instrument body, which serves as the antenna of the encapsulated electronic device, is configured to acquire the electromagnetic wave energy so as to activate the radio frequency identification chip, so that no antenna is needed to be configured in the encapsulated electronic device, and thus the encapsulated electronic device cannot affect operations of medical staff due to small size and can achieve excellent reading effect.

Abstract: A protection housing for an RFID tag, including a first housing and a second housing and an encapsulation structure for encapsulating an RFID tag into the placement space formed by the first housing and the second housing, the first housing having a first extension part including at least one air conductive groove, an elastic body, and at least one first air conductive through hole. The air conductive groove has a cavity and an opening; the elastic body matches the shape of the air conductive groove and is inserted into the cavity of each air conductive groove and forms an elastic snap-fitted part therewith; and the first air conductive through hole is placed on a sidewall where the placement space is adjacent to the elastic snap-fitted part, with one end thereof being in communication with the placement space and the other end being in contact with the elastic body.

Abstract: A miniaturized Radio Frequency Identification (RFID) tag and a microstrip patch antenna thereof are provided. The miniaturized RFID tag includes: a chip, substrate and a microstrip patch antenna. The microstrip patch antenna is attached to a surface of the substrate and includes a power supply part and a radiation part connected with each other. The power supply part is connected with the chip through a microstrip line. Two sides of the radiation part are provided with at least one slit which has the length of one-half wavelength and enables the tag product to be used normally within a range of shorter than one-half normal wavelength. A maximum point and a minimum point are generated in the radiation part simultaneously, so the tag can be used normally without influencing the performance, even when the tag is in contact with any metal surface. The tag can be miniaturized at the same time.