A catheter having an multilayered shaft section with a first layer formed of a polyimide first material and a second layer formed of a second material. The head is defined at its end with an assembling hole in which are disposed a head portion of a handle of the prying tool, a ratchet wheel, a C-shaped ring, a central shaft, a spring and a stopping piece. The shaft is inserted into the first housing from the side where the compression mechanism is to be provided. The security device has a portable housing, a wireless communication port for interface with a security system, a display panel, an accelerometer device, and processing circuitry. When the data card is idle, the interface and the flexible connecting wire are located in the cavity formed by the upper cover and the holder.