A polycarbonate resin composition, which comprises a plant-derived component, has improved properties such as improved moldability, biodegradability, water-absorbing property, impact resistance, melt flow characteristics, density, transparency and the like, exhibits less environmental load and is excellent in recycling efficiency is disclosed. The connector has a housing with a hollow interior. The URL embeds various data such as one or more of the HAs, a serial number, etc. In this manner, the spring and locking mechanism cooperate to move the cutting edge opposite to the direction of insertion as soon as an incision is made.