| abstract |
This invention provides a medical appliance. It comprises an outside casing tube, an inside casing tube, and a needle set. Wherein, both casing tubes are mutually covering with each other. The inside casing tube can slide from a using position along the outside casing tube to a hidden position after being forced. The needle set has a hollow needle body throughout one end of the inside casing tube. By means of this way, when the inside casing tube located at the using position, the needle body will pierce throughout the outside casing tube. It provides medical care personnel to perform medical process of collecting blood by throughout and setting a blood collecting tube into the outside casing tube. It connects with the needle body or an infusion tube inside the blood vessel to perform establishment work of the intravenous drip infusion tube in the blood vessel. When the inside casing tube slides to the hidden position, the needle body will be hidden inside the outside casing tube. Finally, it achieves the object of separating the needle body. |