Micro infusion device for drug delivery

• US 10,322,273 B2
• Filed: 08/14/2017
• Issued: 06/18/2019
• Est. Priority Date: 02/20/2015
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Inventors: Vasko, Robert
• Primary Examiner(s): Farrar, Lauren P
• Application Number:
  US15/676,713
• Publication Number:
  US 20180085566A1
• Time in Patent Office: 673 Days
• CPC Class Codes: A61M 2039/1083 having a plurality of female connectors, e.g. Luer connectors
• CPC Class Codes: A61M 2039/1088 having a plurality of male connectors, e.g. Luer connectors
• CPC Class Codes: A61M 2039/2473 Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/223 Multiway valves
• CPC Class Codes: A61M 39/286 Wedge clamps, e.g. roller clamps with inclined guides
• CPC Class Codes: A61M 5/1409 in series, e.g. first substance passing through container holding second substance, e.g. reconstitution systems needle sets A61M5/162
• CPC Class Codes: A61M 5/16809 by repeated filling and emptying of an intermediate volume pressure infusion using positive displacement pumps A61M5/142

Abstract

A device introduced small volumes of fluid for delivery to a patient through a fluid line. The device includes a first arm adapted to receive a syringe and a second arm fluidly connected to an upstream reservoir that defines an internal volume adapted to receive a volume of fluid. The device includes a fluid obstruction mechanism configured to selectably block flow of fluid from the reservoir toward the patient, wherein the fluid obstruction mechanism transitions between a first state that permits fluid flow from the reservoir toward the patient and a second state that directs fluid flow from the syringe into the reservoir while blocking fluid flow from the reservoir toward the patient.

Claims

1. A device for introducing small volumes of fluid for delivery to a patient through a fluid line, comprising:

a y-site comprising a first arm adapted to receive a syringe and a second arm fluidly connected to an upstream reservoir, the reservoir defining an internal volume adapted to receive a volume of fluid; and

a fluid obstruction mechanism configured to selectably block flow of fluid from the reservoir toward the patient, wherein the fluid obstruction mechanism includes a mechanical element that transitions between;

(1) a first state wherein the mechanical element is positioned such that the mechanical element blocks flow from the reservoir toward the patient and is positioned to permit the syringe to be fluidly coupled to the reservoir; and

(2) a second state wherein the mechanical element is positioned such that mechanical element permits fluid to flow from the reservoir toward the patient and is further positioned to prevents the syringe from being fluidly coupled to the reservoir, wherein, when in the second state, the mechanical element covers a portion of the first arm adapted to receive the syringe to prevent the syringe from being coupled to the first arm.

2. The device of claim 1, wherein the mechanical element rotates between the first state and the second state.

3. The device of claim 2, wherein the mechanical element rotates about a pin.

4. The device of claim 1, wherein the mechanical element is a shroud.

5. The device of claim 1, wherein the second state is a default state.

6. The device of claim 1, wherein, when in the first state, the mechanical element is positioned relative to the y-site such that the first arm is exposed so as to permit the syringe to be attached to the first arm.

7. The device of claim 1, wherein, when in the first state, the mechanical element is positioned relative to the y-site such that the mechanical element obstructs a downstream portion of the y-site.

8. The device of claim 7, wherein, when in the first state, the mechanical element pinches the downstream portion.

9. The device of claim 1, wherein, when in the second state, the mechanical element is positioned relative to the y-site such that the mechanical element does not obstruct a downstream portion of the y-site.

10. A device as in claim 1, wherein the fluid obstruction mechanism automatically transitions to the first state when the syringe is attached to the first arm of the y-site.

11. A device as in claim 10, wherein a portion of the syringe pushes the fluid obstruction mechanism to the first state when the syringe is attached to the first arm of the y-site.

12. A device as in claim 1, wherein the reservoir has a fixed volume.

13. A device as in claim 1, further comprising a pump coupled to the fluid line.

14. A device for introducing small volumes of fluid for delivery to a patient through a fluid line, comprising:

a y-site comprising a first arm adapted to receive a syringe and a second arm fluidly connected to an upstream reservoir, the reservoir defining an internal volume adapted to receive a volume of fluid; and

a fluid obstruction mechanism configured to selectably block flow of fluid from the reservoir toward the patient, wherein the fluid obstruction mechanism includes a mechanical element that transitions between;

(1) a first state wherein the mechanical element is positioned such that the mechanical element blocks flow from the reservoir toward the patient and is positioned to permit the syringe to be fluidly coupled to the reservoir; and

(2) a second state wherein the mechanical element is positioned such that mechanical element permits fluid to flow from the reservoir toward the patient and is further positioned to prevents the syringe from being fluidly coupled to the reservoir;

wherein the fluid obstruction mechanism automatically transitions to the first state when the syringe is attached to the first arm of the y-site and wherein a portion of the syringe pushes the fluid obstruction mechanism to the first state when the syringe is attached to the first arm of the y-site.

15. The device of claim 14, wherein the mechanical element rotates between the first state and the second state.

16. The device of claim 15, wherein the mechanical element rotates about a pin.

17. The device of claim 14, wherein the mechanical element is a shroud.

18. The device of claim 14, wherein the second state is a default state.

19. The device of claim 14, wherein, when in the first state, the mechanical element is positioned relative to the y-site such that the first arm is exposed so as to permit the syringe to be attached to the first arm.

20. The device of claim 14, wherein, when in the first state, the mechanical element is positioned relative to the y-site such that the mechanical element obstructs a downstream portion of the y-site.

21. The device of claim 20, wherein, when in the first state, the mechanical element pinches the downstream portion.

22. The device of claim 14, wherein, when in the second state, the mechanical element covers a portion of first arm adapted to receive a syringe to prevent the syringe from being coupled to the first arm.

23. The device of claim 14, wherein, when in the second state, the mechanical element is positioned relative to the y-site such that the mechanical element does not obstruct a downstream portion of the y-site.

24. The device as in claim 14, wherein the reservoir has a fixed volume.

25. The device as in claim 14, further comprising a pump coupled to the fluid line.