Tamper evident syringe barrel
AssigneeBracco Diagnostics Inc.
InventorsMichael N. Eakins, Ernest Balestracci, Ernst Schramm, John J. Niedospial, Jr.
Life of this patent
Estimating the term…
Abstract
A prefilled syringe of cartridge barrel having a tamper evident closure. Tamper evidence is provided by: a frangible tip seal which is integral with the tapered tip of the barrel; a frangible tip cap covering the tip, the tip seal and a portion of the distal end of the barrel; and an overwrap covering the frangible tip cap and the distal end of the barrel sealed to the distal end of the barrel by a tamper evident seal. The tapered tip is optionally equipped with a luer collar to receive an external luer connector. Alternatively, the tapered tip can be provided with a bore therethrough which can be closed with an elastomeric plug and the external connector can be a tubing conduit.
Claims9
A pre-filled 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:
- 1) a distal end terminating in a shoulder portion and a tapered tip;
- and
- 2) 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 fluids 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 wherein said open proximal end has a slot therein, said open proximal end is frangibly being sealed to the proximal end of said tapered tip to facilitate the removal of said tamper evident tip seal,
- 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 the 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 frangible score line, which seals said proximal end of said overwrap to the said syringe barrel;
- wherein said frangible score line facilitates the removal of said overwrap from said syringe barrel.
Dependencies are inferred from the claim text.