Abstract: A sealed fluid transfer device and a sealed fluid transfer method includes a first container puncture apparatus, a second container puncture apparatus and a fluid transfer apparatus, wherein the fluid transfer apparatus includes a first container puncture adapter, a second container puncture adapter and a pressure supply unit; the first container puncture adapter includes a sealing element fixed seat, a guided outer casing, a pipeline fixed seat, a first fluid pipeline and a second fluid pipeline; when the sealing element fixed seat is connected with the first container puncture apparatus, a first sealing element is firstly tightly connected with a second sealing element, the first fluid pipeline and the second fluid pipeline respectively pass through the two sealing elements and then communicate with the first container; after being firstly used, the first fluid pipeline and the second fluid pipeline are always in no contact with the exterior.

Abstract: The present invention discloses a sealed fluid transfer device and a sealed fluid transfer method.

Abstract: A retractable blood-sampling device comprises a housing (15), a blood-sampling needle holder (13), a blood-sampling needle and a recovery sleeve (19). There is a compressible spring (14) mounted between the blood-sampling needle holder (13) and the front end of the housing (15). There is at least a hanging arm (16) on the blood-sampling needle holder (13), and the hanging arm (16) hangs on the front end of the housing (15). When the hanging arm (16) is subjected to an inward pressure, the hanging arm (16) disengages from the housing (15), the spring (14) is released, and the blood-sampling needle holder (13) and the blood-sampling needle are retraced into the recovery sleeve (19).