Patent ID: 6846303

Claim:
A prefilled tamper evident syringe barrel comprising: a) a syringe barrel of glass or polymeric material having an inner surface defining a chamber having a medical fluid therein, said syringe barrel comprising: a distal end terminating in a shoulder portion and a tapered tip; and a proximal end containing a plunger slideably positioned in the syringe barrel; wherein said tapered tip comprises: a distal end and a proximal end, said distal end being closed by a tip seal; wherein said tapered tip has a breakaway score means adjacent to said distal end for facilitating removal of said tip seal thereby forming a passageway through which said medical fluid can be expelled from the syringe barrel; b) a tamper evident tip cap of cylindrical configuration having a closed distal end and an open proximal end comprising: (1) an upper part and (2) a lower part, said upper part and said lower part connected to each other by a breakaway score line; a centrally positioned cylinder in said upper part extending from said closed distal end towards said proximal end of the tamper evident tip cap terminating in said breakaway score line and serving to securely hold said tip seal; said lower part of said tamper evident tip cap being sealed at its proximal end to the distal end of said syringe barrel, said lower part comprising an anti-rotation lock connecting said lower part to said syringe barrel; c) an overwrap of cylindrical configuration having a closed distal end and an open proximal end, said overwrap being provided with a ridge adjacent to the proximal end thereof projecting towards the shoulder of said syringe barrel and resting thereon; wherein said overwrap encloses a portion of said syringe barrel, said shoulder portion and said tip cap; and d) a tamper evident seal of cylindrical configuration having an open distal end and an open proximal end, provided with a fragible score line, which seals said proximal end of said overwrap to the said syringe barrel.