Disposable liquid-powder package and hypodermic syringe

• US 3,342,180 A
• Filed: 04/24/1964
• Issued: 09/19/1967
• Est. Priority Date: 04/24/1964
• Status: Expired due to Term

• Current Assignee: Roland Sandhage Ellsworth, Sinclair Taylor Arthur
• Original Assignee: Roland Sandhage Ellsworth, Sinclair Taylor Arthur
• Inventors: ROLAND SANDHAGE ELLSWORTH, SINCLAIR TAYLOR ARTHUR
• Application Number:
  US04/362,444
• Time in Patent Office: 1,243 Days
• US Class Current: 604/89
• CPC Class Codes: A61M 5/284 comprising means for injection of two or more media, e.g. by mixing

Claims

4. A COMBINATION ASPIRATING HYPODERMIC SYRINGE AND TWO-COMPARTMENT PACKAGE COMPRISING:

A GENERALLY CYLINDRICAL BARREL, HAVING AT THE REAR END A BARREL FLANGE, AND AT THE FORWARD END A BARREL NECK;

A RESILIENT PISTON IN SAID BARREL AND ON SAID PISTON AT LEAST ONE ANNULAR RING IN SEALING ENGAGEMENT WITH SAID BARREL;

SAID PISTON DIVIDING THE BARREL INTO A FRONT AND A REAR STORAGE COMPARTMENT;

A SEPARATE COMPONENT IN EACH COMPARTMENT DURING STORAGE;

A REAR RETAINING STOPPER TO PREVENT LOSS OF CONTENTS FROM THE REAR COMPARTMENT;

ONE-WAY VALVE MEANS TO TRANSFER THE CONTENTS FROM THE REAR COMPARTMENT TO THE FRONT COMPARTMENT AT TIME OF USE;

A PLUNGER EXTENDING FROM THE REAR OF SAID BARREL TO SAID PISTON, AND ON THE REAR OF THE PLUNGER, MEANS FOR ATTACHING A PLUNGER EXTENSION;

A PUNCTURABLE STOPPER IN THE BARREL NECK HAVING THEREIN AT THE FORWARD END A NEEDLE PORT, AND AT THE REAR END A NEEDLE POINT DIMPLE, THE SOLID MEMBRANCE OF THE STOPPER THEREBETWEEN BEING READILY PUNCTURABLE, SAID STOPPER SUBSTANTIALLY FILLING SAID NECK, AND THEREBY MINIMIZING DEAD SPACE, A STOPPER SEAL RETAINING THE SAID STOPPER IN THE BARREL NECK;

A DOUBLE ENDED HYPODERMIC NEEDLE, A NEEDLE HUB SURROUNDING SAID NEEDLE, DIVIDING THE NEEDLE INTO A SHORT END AND A LONG END, SAID SHORT END EXTENDING INTO AND BEING STORED IN THE NEEDLE PORT;

A COMBINATION NEEDLE GUARD AND PLUNGER EXTENSION FITTING OVER THE FRONT OF THE BARREL AND STOPPER ASSEMBLY, HAVING A THUMB PIECE AT THE REAR AND MEANS FOR CONNECTING TO THE PLUNGER AT THE FRONT THEREOF, SAID GUARD HAVING THEREIN A HUB CHAMBER AND A NEEDLE SHEATH, INTO WHICH FITS THE HUB AND NEEDLE RESPECTIVELY, SAID HUB CHAMBER BEING DEEP ENOUGH TO HOLD THE NEEDLE HUB DURING STORAGE, WITH THE THUMB PIECE POSITIONED AGAINST THE SEAL, AND ALSO HAVING THEREIN A STERILIZING VENT, A PERMIT ENTRY OF A STERILIZING GAS, AND AN AIR FILTER ADJACENT SAID VENT.