Patent ID: 6911021

Claim:
A safety syringe for taking blood comprising a hollow barrel having a distal closed end; a proximal open end; a sidewall; an outside surface; and a first through hole defined through the sidewall; a seal mounted inside the hollow barrel; an inner needle being L-shaped with an inner channel and mounted on the seal; a tube connected to the hollow barrel, being cylindrical and having a proximal open end; a distal open end; a sidewall; a lip defined inside the distal open end; a guide slot defined longitudinally through the tube and having a proximal end and a distal end; two locking slots defined through the tube and locking slots being perpendicular to the guide slot and communicating with the guide slot; a second through hole defined through the sidewall of the tube and aligning and communicating with the first through hole of the hollow barrel; and a needle hub slidably mounted inside the tube and having a stopper having a top surface, a bottom surface and a cylindrical surface; a needle with a longitudinal fluid passage and mounted in the bottom surface of the stopper; a fluid channel defined through the stopper and having a first end defined through the bottom surface of the stopper and connected to the needle; and a second end; a guide stub attached to the cylindrical surface of the stopper and moveably received in the guide slot in the tube; and a tapered hole formed in the cylindrical sidewall and communicating with the second end of the fluid channel so the tapered hole aligns with the second through hole when the needle of the needle hub is fully extended out the tube.