Sterile syringe assembly and method of making same

• US 3,937,219 A
• Filed: 01/14/1974
• Issued: 02/10/1976
• Est. Priority Date: 01/14/1974
• Status: Expired due to Term

• Current Assignee: Nubar A. Karakashian
• Original Assignee: Nubar A. Karakashian
• Inventors: Karakashian, Nubar A.
• Primary Examiner(s): Michell, Robert W.
• Assistant Examiner(s): Recla, Henry J.
• Application Number:
  US05/433,118
• Time in Patent Office: 757 Days
• Field of Search: 128/184, 128/218 R, 128/218 S, 128/215, 206/364, 206/365, 206/439
• US Class Current: 604/26
• CPC Class Codes: A61M 5/002 Packages specially adapted therefor, e.g. for syringes or needles, kits for diabetics needle protection, e.g. caps, A61M5/3202; for sharps A61B50/3001

Abstract

A sterile syringe assembly and method of making same for providing sterile air to be injected into a patient. The syringe assembly includes a syringe mounted on a platform within an enclosure package. The syringe includes a barrel portion and a plunger which is at least partially pulled back from the barrel portion to provide an internal chamber of the barrel portion filled with sterilized air. The package enclosure is opened and the syringe plunger is actuated to inject the contained sterilized air into the patient.

Claims

1. A method for injecting sterile air into a patient including the steps of:

a. providing a syringe having an internal chamber with a predetermined volume containing non-sterilized air by initially displacing a syringe plunger through a predetermined linear distance to provide said predetermined volume quantity of said non-sterilized air within said internal chamber;

b. packaging said syringe in a gas sterilizing enclosure;

c. maintaining said predetermined internal chamber volume when said syringe is packaged in said gas sterilized enclosure by constraining said syringe plunger a predetermined distance from a flange section of a barrel portion of said syringe;

d. sterilizing said enclosure, said syringe, and said predetermined volume through gas sterilization;

e. removing said sterilizing gas from within said enclosure, said predetermined volume quantity of said air remaining within said internal chamber being sterile;

f. taking said syringe from said sterilized enclosure; and

,

g. injecting said predetermined volume quantity of said sterilized air contained within said internal chamber into said patient.

2. The method for injecting sterile air as recited in claim 1 where said internal chamber predetermined volume is a predetermined value within the range of 1.0 to 40.0 cubic centimeters.

3. The method for injecting sterile air as recited in claim 1 where the step of packaging said syringe includes the step of sealing said syringe within said gas sterilizing enclosure throughout a peripheral boundary of said enclosure.

4. The method for injecting sterile air as recited in claim 3 where the step of sealing said syringe includes the step of heat sealing opposing surfaces of said enclosure each to the other throughout said peripheral boundary of said enclosure.

5. The method for injecting sterile air as recited in claim 1 where the step of packaging said syringe includes the step of mounting said syringe on a platform within said enclosure.

6. The method for injecting sterile air as recited in claim 5 where the step of mounting said syringe includes the step of removeably securing said syringe to said platform within said chamber.

7. The method for injecting sterile air as recited in claim 1 where the step of constraining includes the step of placing said syringe on a platform mount secured to said platform, said syringe plunger and said flange section being positioned contiguous to opposing linearly displaced surfaces of said platform mount.

8. The method for injecting sterile air as recited in claim 1 where the step of sterilizing includes the step of inserting said enclosure in a sterilizing gas environment.

9. The method for injecting sterile air as recited in claim 8 where the step of inserting includes the step of passing said sterilizing gas internal to said enclosure.

10. The method for injecting sterile air as recited in claim 9 where said enclosure is permeable to said sterilizing gas.

11. The method for injecting sterile air as recited in claim 10 where said sterilizing gas is ethylene oxide.

12. The method for injecting sterile air as recited in claim 1 where the step of removing said sterilizing gas includes the step of placing said enclosure in an environment devoid of said sterilized gas.

13. The method for injecting sterile air as recited in claim 12 where the step of placing said enclosure includes the step of permitting said sterilizing gas to permeate through the walls of said enclosure to said environment devoid of said sterilized gas.