Injection site

• US 4,048,995 A
• Filed: 07/19/1976
• Issued: 09/20/1977
• Est. Priority Date: 08/15/1975
• Status: Expired due to Term

• Current Assignee: Baxter Travenol Laboratories Incorporated (Baxter International Inc.)
• Original Assignee: Baxter Travenol Laboratories Incorporated (Baxter International Inc.)
• Inventors: Mittleman, Herbert
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/706,363
• Time in Patent Office: 428 Days
• Field of Search: 128/214 R, 128/214 C, 128/214.2, 128/227, 55/159, 55/190, 55/199, 210/DIG. 23, 210/436
• US Class Current: 604/86
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

An injection site is provided in the illustrative embodiment, in which a first inlet (to which a parenteral fluid conduit is connected) and a second inlet (adapted to receive injected medication) are parallelly located on one end of a main body portion. An outlet is located on the opposite end of the main body portion, with the second inlet and the outlet being substantially coaxial. The main body portion defines a single chamber that communicates with the inlets and outlets and is constructed to provide unobstructed flow of the parenteral liquid and medication to the outlet. The chamber is of a length that aids in preventing the medication that is injected from dropping through air.

Claims

1. An injection site for location between a parenteral source of fluid and a patient, which comprises:

a first inlet to which a conduit from a first liquid container is adapted to be connected;

a second inlet adapted to receive needle-injected medication;

an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit;

a main body portion defining a single chamber that communicates with said first and second inlets and said outlet, said chamber having a sloped wall between said first inlet and said outlet, said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet, said chamber having a cross-sectional area that is substantially greater than the cross-sectional area of said first inlet;

said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air;

said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber, and said chamber being constructed to provide unobstructed flow of the first liquid and medication to said outlet.

2. In an injection site as described in claim 1, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.

3. In an injection site as described in claim 1, said main body portion and outlet being formed of a non-pierceable plastic material.

4. In an injection site as described in claim 1, wherein said chamber length is 0.75 inch.

5. In an injection site as described in claim 1, including a third inlet in communication with said chamber;

said first, second and third inlets being parallelly positioned.

6. In an injection site as described in claim 5, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.

7. In an injection site as described in claim 5, and further including a fourth inlet in communication with said chamber;

said first, second, third and fourth inlets being parallelly positioned.

8. An injection site as described in claim 7, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.

9. An injection site as described in claim 1, including fender means extending from said site in a direction transverse the axis of said second inlet.

10. An injection site as described in claim 9, said fender means comprising a circumferential flange.

11. An injection site for location between a parenteral source of fluid and a patient, which comprises:

a first inlet to which a conduit from a first liquid container is adapted to be connected;

a second inlet adapted to receive needle-injected medication;

an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit;

a main body portion coupling said first and second inlets to said outlet, said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber;

said main body portion defining a single chamber the wall of which is continuous and without projections, said chamber communicating with said first and second inlets and said outlet;

said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air;

said chamber having a sloped wall between said first inlet and said outlet with said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet.

12. An injection site as described in claim 11, wherein said chamber has a cross-sectional area that is substantially greater than the cross-sectional area of said first inlet;

and a pierceable, resealable diaphragm connected to said second inlet with a compression fit.

13. An injection site as described in claim 11, including a third inlet in communication with said chamber, said first, second and third inlets all being parallelly positioned.

14. An injection site as described in claim 11, wherein said main body portion and outlet are formed of a non-pierceable plastic material and said outlet and said second inlet are substantially coaxial;

and a pierceable, resealable diaphragm connected to said second inlet with a compression fit.

15. An injection site as described in claim 11, including fender means extending from said site in a direction transverse the axis of said second inlet.

16. An injection site as described in claim 15, said fender means comprising a circumferential flange.

17. An injection site as described in claim 11, wherein said chamber length is 0.75 inch.