Patent ID: 6540697
Filing Date: 2003-04-01
Classification: A61B,A61M

Abstract:
A safety vacuum syringe for blood sampling conformed to ergonomics comprising:a hollow barrel, a directional sliding trench being disposed transversely at one side of a front end of said barrel, and a sliding slit being disposed transversely at another side opposite to said trench, a needle seat and a press plate being further disposed in said trench and said slit respectively, wherein an eccentric reduced portion is disposed on an upper surface of the needle seat, a guiding hole is disposed through the eccentric reduced portion to fix a needle having a substantially Z-shaped portion therein and a lower needle tip of the needle being placed at an central axial line of a reduced lining tube firmly, a needle head is further covered on said eccentric reduced portion, said press plate has an end face and a guiding stick, said guiding stick has a triangle shape strip at its flank side, said sliding slit has triangle shape slit opening at its flank side corresponding to a position of the strip, so as to move the press plate as a guide; a vacuum tube, being disposed in said barrel, an elastic plug being covered on an opening at an upper side of said vacuum tube.