HYPODERMIC SYRINGE AND NEEDLE ASSEMBLY

• US 3,884,229 A
• Filed: 11/29/1973
• Issued: 05/20/1975
• Est. Priority Date: 11/29/1973
• Status: Expired due to Term

• Current Assignee: George K. Burke, Kenneth Raines
• Original Assignee: George K. Burke, Kenneth Raines
• Inventors: Raines, Kenneth, Burke, George K.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US05/420,199
• Time in Patent Office: 537 Days
• Field of Search: 128/218N,218DA,218D,218R,218NV,220,221
• US Class Current: 604/205
• CPC Class Codes: A61M 2005/2407 from the rear
• CPC Class Codes: A61M 2005/247 with fixed or steady piercing means, e.g. piercing under movement of ampoule
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/34 Constructions for connecting the needle , e.g. to syringe nozzle or needle hub connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 5/348 snap lock, i.e. upon axial displacement of needle assembly A61M5/344 takes precedence
• CPC Class Codes: A61M 5/349 using adhesive bond or glues

Abstract

A hypodermic syringe barrel for receiving and holding a vial therein containing a medicament and the like and a stopper sealing one end of the vial, and a transfer needle assembly snap fitted into one end of the syringe barrel to lock the needle assembly to the barrel, the transfer needle adapted to pierce the stopper in the vial for withdrawal of the medicament and the like from the vial and through the transfer needle assembly.

Claims

1. Hypodermic syringe and transfer needle assembly, comprising a cylindrical hypodermic syringe barrel for receiving and holding a vial having a puncturable stopper sealing one end thereof and containing a medicament and the like therein, said barrel having an open end and a closed end, an annular, radially inwardly projecting sealing rib in the barrel adjacent the open end thereof, a plurality of axially extending, circumferentially spaced apart guide ribs on an inner surface portion of the barrel extending from the closed end thereof to the sealing rib, said barrel having a reduced diameter, axially outwardly extending hub on the closed end thereof, said hub having an axial bore therethrough with an enlarged diameter outer end portion, a plurality of axially extending splines in the enlarged diameter outer end portion, said transfer needle assembly having a reduced diameter, axially extending boss thereon adapted to be received in the bore through the hub, said boss having an inner end portion and an enlarged diameter outer end portion defining a shoulder with said inner end portion, a plurality of circumferentially spaced, axially extending splines on the enlarged diameter portion of the boss cooperably engageable with the splines in the bore of the hub to prevent turning of the needle assembly, said shoulder on the boss cooperably engaged with a shoulder in the bore of the hub to limit inward movement of the boss in the hub bore, cooperating snap locking means on the boss and in the bore through the hub to lock the needle assembly to the barrel, said snap locking means including an annular, radially inwardly projecting locking flange in the inner end of the bore through the hub, an annular, radially outwardly projecting flange on the end of said boss adapted to be snapped behind the locking flange in the hub to lock the needle assembly to the barrel, said boss having an axial bore therethrough, a transfer needle fixed in the bore through the boss and including a sharpened end projecting beyond the end of the boss, and a Luer lock needle adapter on the other end of the needle assembly for attachment thereto of a piercing means, said transfer needle extending axially inwardly into thE barrel and adapted to pierce the stopper in the vial for withdrawal of the medicament and the like from the vial and through the transfer needle assembly.

2. A hypodermic syringe transfer needle assembly as in claim 1, wherein said barrel comprises a single cylindrical side wall with the plurality of axially extending, circumferentially spaced guide ribs therein for engagement with the vial to properly position the vial in the barrel.