DRUG DELIVERY DEVICE FOR FLUID RESTRICTED PATIENTS

• US 20120041416A1
• Filed: 08/12/2010
• Published: 02/16/2012
• Est. Priority Date: 08/12/2010
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Lal, Birendra K.
• Granted Patent: US 8,814,829 B2
• Time in Patent Office: Days
• US Class Current: 604/506
• CPC Class Codes: A61M 39/22 Valves or arrangement of valves A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

Abstract

A syringe assembly for connecting to an intravenous (“IV”) line includes: a syringe barrel having an actuation end and a discharge end; a syringe plunger moveable within the syringe barrel, the syringe plunger including a plunger head connected to a plunger arm; a seal between the plunger arm and the syringe barrel, the seal residing on an actuation end side of the syringe plunger; and a tube in fluid communication with the syringe barrel at a location between the seal and the plunger head, the tube having a distal end configured to be connected to the IV line.

Claims

1. A syringe assembly for connecting to an intravenous (“

IV”

) line comprising;

a syringe barrel having an actuation end and a discharge end;

a syringe plunger moveable within the syringe barrel, the syringe plunger including a plunger head connected to a plunger arm;

a seat between the plunger arm and the syringe barrel, the seal residing on an actuation end side of the syringe plunger; and

a tube in fluid communication with the syringe barrel at a location between the seal and the plunger head, the tube having a distal end configured to be connected to the IV line.

2. The syringe assembly of claim 1, wherein the tube is connected to the syringe barrel at or near the discharge end of the syringe barrel.

3. The syringe assembly of claim 1, wherein the seal is fixed to the syringe barrel and slidingly engaged with the plunger arm.

4. The syringe assembly of claim 1, wherein the discharge end of the syringe barrel is configured to attach sealingly to a connector of the IV line.

5. The syringe assembly of claim 1, wherein the distal end of the tube includes a first connector configured to be mated to a second connector of the IV line.

6. The syringe assembly of claim 1, wherein the seal is a first seal, and wherein the plunger head includes a second seal that is moveably sealed to the syringe barrel.

7. The syringe assembly of claim 6, wherein the second seal is formed by an outer wall of the plunger head.

8. The syringe assembly of claim 6, wherein the second seal is an o-ring seal held by the plunger head.

9. The syringe assembly of claim 6, wherein the first and second seals form an expandable sealed volume within the syringe barrel on the actuation end side of the plunger head.

10. The syringe assembly of claim 1, wherein the tube is connected to a port extending from the syringe barrel.

11. An intravenous (“

IV”

) administration set including;

an IV line for providing a primary medical fluid or drug to a patient;

a site providing an administration connection into the IV line;

a multi-way valve including a normal flow position and a secondary flow position to a secondary connection of the multi-way valve;

a syringe including a discharge end configured to connect to the administration connection; and

a tube connected fluidly to the syringe and the secondary connection, such that when the multi-way valve is set to the secondary flow position, a secondary medical fluid or drug injected from the syringe through the administration connection into the IV line causes a displacement of primary medical fluid or drug into the tube.

12. The IV administration set of claim 11, wherein the LV line is connected fluidly to at least one of:

(i) a container for the primary medical fluid/drug and (ii) a patient access device.

13. The IV administration set of claim 11, wherein the site is y-site.

14. The IV administration set of claim 11, wherein the tube is formed as an assembly with the syringe.

15. The IV administration set of claim 11, wherein the normal flow position of the multi-way valve enables the primary medical fluid/drug and the secondary medical fluid/drug to flow to the patient.

16. The IV administration set of claim 11, the syringe including a syringe plunger and defining a sealed volume behind the syringe plunger, the tube connected fluidly to the syringe so as to be in fluid communication with the sealed volume.

17. The IV administration set of claim 16, wherein a portion of the displaced primary medical fluid or drug is displaced into the sealed volume.

18. The IV administration set of claim 11, wherein a volume of the primary medical fluid or drug displaced at least substantially matches a volume of the secondary medical fluid or drug injected from the syringe into the IV line.

19. An intravenous (“

IV”

) administration line method comprising;

connecting an IV line to a bypass apparatus;

injecting a secondary medical fluid or drug into the IV line; and

causing the injected secondary medical fluid or drug to displace an amount of a primary medical fluid or drug into the bypass apparatus.

20. The IV administration line method of claim 19, which further includes causing the injected secondary medical fluid or drug to flow to an end of the IV line while maintaining the displaced primary medical fluid or drug in the bypass apparatus.

21. The IV administration line method of claim 19, wherein the bypass apparatus includes (i) a bypass line connected to a syringe for injecting the secondary medical fluid or drug, (ii) a bypass line connected to a supply container for the primary medical fluid or drug, or (iii) a vial or container.