High contrast syringe

• US 6,290,678 B1
• Filed: 06/01/2000
• Issued: 09/18/2001
• Est. Priority Date: 06/01/1999
• Status: Expired due to Fees

• Current Assignee: Aydelotte A. Susan, Fred A. Aydelotte
• Original Assignee: Aydelotte A. Susan, Fred A. Aydelotte
• Inventors: Aydelotte, A. Susan, Aydelotte, Fred A.
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US09/585,092
• Time in Patent Office: 474 Days
• Field of Search: 604/187, 604/189, 604/207, 604/218
• US Class Current: 604/187
• CPC Class Codes: A61M 2005/3125 specific display means, e.g. to indicate dose setting
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take precedence
• CPC Class Codes: A61M 5/31525 Dosing burettes, pipettes B01L3/02

Abstract

A syringe having color demarcation features to enhance readability. Said syringe having a central body portion that is a barrel having a proximal and distal end along a central longitudinal axis that acts a reservoir for fluid inside the syringe. The side wall of the barrel is relatively transparent having volume demarcations in contrasting colors to increase the readability of the demarcations. A plunger and coupled seal member can be engaged with the proximal end of the barrel creating a liquid tight reservoir inside the syringe. The seal member can be made a contrasting color to further enhance the readability of the demarcations.

Claims

1. A syringe barrel comprising:

a central body portion that is a barrel having a longitudinal axis and a side wall spaced from said axis defining an inside diameter and a reservoir for retaining fluid, said barrel having an open proximal end and a distal end having a passageway therethrough in fluid communication with said reservoir;

said side wall including a transparent portion having demarcations;

said demarcations including color marking means of at least two different colors for improving readability of said demarcations; and

said color marking means for making measurement of fluid inside said barrel.

2. The syringe barrel of claim 1 wherein said demarcations comprise volume measuring indicia.

3. The syringe barrel of claim 1 wherein said demarcations extend around at least one-half the circumference of said barrel.

4. The syringe barrel of claim 1 wherein said demarcations are at least two colors selected from the group blue, green, orange, red, yellow and black and any combinations thereof.

5. The syringe barrel of claim 1 wherein every fifth unit line of said demarcations is a high contrast color selected from the group blue, green, orange, red, yellow and black and any combinations thereof.

6. The syringe barrel of claim 1 wherein every fifth unit line of said demarcations is blue.

7. The syringe barrel of claim 1 wherein individual unit lines alternate between two colors selected from the group blue, green, orange, red, yellow and black and any combinations thereof.

8. The syringe barrel of claim 1 wherein individual unit lines alternate between two colors selected from the group orange and green.

9. The syringe barrel of claim 1 wherein every fifth unit line of said demarcations is blue;

and individual emit lines alternate between two colors selected from the group orange and green.

10. The syringe barrel of claim 1 wherein said demarcations are permanently associated with the outer surface of said side wall.

11. The syringe barrel of claim 1 wherein said demarcations have a contrasting color coating means for improving readability of said demarcations on said barrel.

12. The syringe barrel of claim 1 wherein said demarcations have a contrasting color coating means for reducing eyestrain of the operator of said syringe barrel.

13. The syringe barrel of claim 1 wherein said demarcations have a contrasting color coating means for reducing inaccurate volume measurements of a fluid contained in said syringe barrel.

14. A syringe comprising:

a central body portion that is a barrel having a longitudinal axis and a side wall spaced from said axis defining an inside diameter and a reservoir for retaining fluid, said barrel having an open proximal end and a distal end having a passageway therethrough in fluid communication with said reservoir;

said side wall including a transparent portion having demarcations;

said demarcations including color marking means of at least two different colors for improving readability of said demarcations;

said color marking means for making measurement of fluid inside said barrel;

a plunger;

said plunger slidably positionable in fluid-tight engagement inside said barrel;

said plunger having an elongated central body portion having a longitudinal axis;

said plunger having a proximal end connected to a disc member; and

said plunger having a distal end connected to a seal member.

15. The plunger of claim 14 wherein said body portion has two perpendicular intersecting flat members.

16. The plunger of claim 14 wherein said seal member is a high contrast color selected from the group blue, green, orange, red, yellow and black and any combinations thereof.

17. The plunger of claim 14 wherein said seal member has a contrasting color coating means for improving readability of said demarcations on said barrel.

18. The plunger of claim 14 wherein said seal member has a contrasting color coating means for reducing eyestrain of the operator of said syringe barrel.

19. The plunger of claim 14 wherein said seal member has a contrasting color coating means for reducing inaccurate volume measurements of a fluid contained in said syringe barrel.