HYPODERMIC SYRINGE ASSEMBLY

• US 3,563,373 A
• Filed: 10/06/1967
• Issued: 02/16/1971
• Est. Priority Date: 10/06/1967
• Status: Expired due to Term

• Current Assignee: Paul E. Paulson
• Original Assignee: Paul E. Paulson
• Inventors: Paulson, Paul E.
• Application Number:
  US04/673,342
• Time in Patent Office: 1,229 Days
• US Class Current: 206/229
• CPC Class Codes: A61J 1/062 Carpules
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2013 having two piercing ends
• CPC Class Codes: A61J 1/2027 having frangible parts
• CPC Class Codes: A61J 1/2051 having tap means, e.g. tap means activated by sliding
• CPC Class Codes: A61J 1/2093 Containers having several compartments for products to be mixed
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents

Abstract

Prefilled cartridges assembled and packaged for mixing of dual ingredient hypodermic injections immediately prior to injection. Package may also be employed for prefilled cartridge of single ingredient.

Claims

1. A hypodermic needle assembly comprising a first cartridge including a first-necked vial having a dosage sealed therein, said seal being effected by a rupturable diaphragm and an outer sealing band closing the vial neck and a stem-operated plunger within said vial;

a stem member and a coupler comprising a barrel fitting over the necked end of said vial, an integral shank extending beyond said barrel, a hypodermic needle carried by said shank and having an end extending into said barrel, and detent means within said barrel, said detent means normally engaging said sealing band to space the end of said needle from said diaphragm but to lock said coupler onto said cartridge by engaging said band when the vial is forced past said detent means further into said barrel, including a longitudinal cylindrical plunger stem member having a bore extending throughout its length and receiving said shank and a protruding end of said needle, and means to normally restrain said stem member on said shank and space the same from said barrel while the protruding end of said needle is located substantially entirely in said bore.

2. A hypodermic needle assembly as defined in claim 1 including a secondary cartridge comprised of a vial and containing a dosage sealed in said vial by a plunger connected to said cylindrical stem member, whereby said needle may be forced into communication between the dosages of said first and second cartridges by telescoping said coupler on the vial of said first cartridge and said stem member onto said shank to pierce the diaphragm of the seal and of said first cartridge with one end of said needle and the plunger of said second cartridge with the protruding end of said needle.

3. A hypodermic needle assembly as defined in claim 2 including a stem connected to the plunger of said first cartridge, a flange on the vial of said first cartridge, and removable clip means to engage said stem and said flange simultaneously in order to fix the position of said plunger in said vial.

4. A hypodermic needle assembly as defined in claim 3 including a cap on said plunger stem of said first cartridge and a rigid packaging member surrounding said assembly as defined in claim 4 and closed by said cap, whereby the said assembly may be supported for shipping and stored in a sterile condition with said packaging member.

5. A packaged hypodermic needle assembly as defined in claim 5 in which said plunger stem member of said second cartridge is provided with a flange whose radius is substantially equal to the radius of said clip means and but slightly less than the radius of said cap, whereby said packaging means may be a tube closed at one end and adapted to be closed by said cap at its other end and said flange on said plunger stem member will support said assembly within said tube.

6. A spacer-plunger stem for hypodermic needle assemblies comprising a tubular member flanged at one end and provided at its other end with means connected to a plunger in a hypodermic dosage vial, the external surface of said stem having a sliding fit within said vial, and detent means on the interior of the bore of said tubular stem engaging a ferrule portion of means carrying a hypodermic needle having an overall length greater than the length of said bore but restrained by said detent means, when inserted into saiD bore at the flanged end of said stem, from penetrating through the plunger on said other end of said stem.