Fluid mixing device and fluid delivery tube set including same

Patent metadata

Field	Value
Publication number	US-12070568-B2
Application number	US-202318324674-A
Country	US
Kind code	B2
Filing date	May 26, 2023
Priority date	Feb 28, 2020
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

A fluid mixing device for mixing a first injection fluid and a second injection fluid includes a first fluid inlet, a second fluid inlet, a mixing chamber in fluid communication with the first and second fluid inlets, and an outlet port in fluid communication with the mixing chamber. The first fluid inlet is configured to conduct the first injection fluid in a first direction and has a first redirecting surface. The second fluid inlet is configured to conduct the second injection fluid in a second direction along a different axis from the first direction and has a second redirecting surface. The mixing chamber is configured to mix the first injection fluid and the second fluid together. The mixture of the first injection fluid and the second injection fluid exits the fluid mixing device via the outlet port.

First claim

We claim:

1. A fluid delivery tube set for delivering fluid from a fluid injector to a patient, the fluid delivery tube set comprising:
a first inlet tube configured to deliver a first injection fluid;
a second inlet tube configured to deliver a second injection fluid;
an outlet tube configured to deliver a mixture of the first injection fluid and the second injection fluid to the patient; and
a fluid mixing device comprising:
a first fluid inlet coupled to the first inlet tube and configured to conduct the first injection fluid in a first direction, the first fluid inlet having a first redirecting surface;
a second fluid inlet coupled to the second inlet tube and configured to conduct the second injection fluid in a second direction, the second fluid inlet having a second redirecting surface;
a mixing chamber in fluid communication with the first fluid inlet and the second fluid inlet and having a third redirecting surface, the mixing chamber configured to mix the first injection fluid and the second injection fluid, wherein the mixing chamber comprises a first inlet distal to the third redirecting surface and a second inlet distal to the third redirecting surface, wherein the first redirecting surface is positioned distal to the first fluid inlet and at least partially faces the first inlet to the mixing chamber, and wherein the second redirecting surface is positioned distal to the second fluid inlet and at least partially faces the second inlet to the mixing chamber; and
an outlet port coupled to the outlet tube and in fluid communication with the mixing chamber,

wherein the first redirecting surface is configured to redirect the first injection fluid in a first different direction from the first direction to enter the mixing chamber along the first different direction, and wherein the second redirecting surface is configured to redirect the second injection fluid in a second different direction from the second direction to enter the mixing chamber along the second different direction, wherein the first different direction and the second different direction are selected so that the first injection fluid and the second injection fluid contact the third redirecting surface of the mixing chamber to turbulently mix the first injection fluid and the second injection fluid together in the mixing chamber, and
wherein the mixture of the first injection fluid and the second injection fluid exits the fluid mixing device via the outlet port.

2. The fluid delivery tube set of claim 1 , further comprising at least one of a first check valve in the first fluid inlet; and a second check valve in the second fluid inlet.

3. The fluid delivery tube set of claim 2 , wherein the first fluid inlet and the second fluid inlet have a non-circular cross-sectional shape, and wherein the first check valve and the second check valve have a circular cross-sectional shape.

4. The fluid delivery tube set of claim 2 , wherein the first check valve has a first end in engagement with a first inlet port on the first fluid inlet and a second end in engagement with 35 a first stop element proximal to the first redirecting surface, wherein the second check valve has a first end in engagement with a second inlet port on the second fluid inlet and a second end in engagement with a second stop element proximal to the second redirecting surface, and wherein the first check valve and the second check valve are reversibly compressible between the first end and the second end in response to a first fluid pressure of the first injection fluid flowing through the first inlet port and a second fluid pressure of the second injection fluid flowing through the second fluid port, respectively.

5. The fluid delivery tube set of claim 4 , wherein the first stop element and the second stop element have a pointed proximal end.

6. The fluid delivery tube set of claim 4 , wherein the first inlet port and the second inlet port have a tapered end surface.

7. The fluid delivery tube set of claim 1 , wherein the first fluid inlet and the second fluid inlet have a first inlet port and a second inlet port, respectively, wherein the first redirecting surface and second redirecting surface are positioned distally relative to the first inlet port and second inlet port, respectively, and wherein the third redirecting surface is positioned proximally relative to the outlet port, the first redirecting surface, and the second redirecting surface.

8. The fluid delivery tube set of claim 1 , wherein at least one of the first redirecting surface and the second redirecting surface has a substantially concave-shaped surface and has a radius of curvature greater than or equal to 90°.

9. The fluid delivery tube set of claim 1 , wherein at least one of the first redirecting surface and the second redirecting surface has a substantially concave-shaped surface and has a radius of curvature greater than or equal to 150°.

10. The fluid delivery tube set of claim 1 , wherein the third redirecting surface has a substantially concave-shaped surface facing the outlet port.

11. The fluid delivery tube set of claim 10 , wherein the concave-shaped surface has a radius of curvature of greater than or equal to 90°.

12. The fluid delivery tube set of claim 10 , wherein the concave-shaped surface has a radius of curvature of greater than or equal to 150°.

13. The fluid delivery tube set of claim 1 , wherein the outlet port has an axis parallel to an axis of the first fluid inlet and an axis of the second fluid inlet.

14. The fluid delivery tube set of claim 13 , wherein the axis of the outlet port extends between the axis of the first fluid inlet and the axis of the second fluid inlet.

15. The fluid delivery tube set of claim 1 , wherein each of the first redirecting surface and the second redirecting surface are concave-shaped and face a direction of fluid flow of the first injection fluid in the first fluid inlet and a direction of fluid flow of the second injection fluid in the second fluid inlet, respectively.

16. The fluid delivery tube set of claim 1 , wherein at least one of the first fluid inlet, the second fluid inlet, and the outlet port has an at least partially helical-shaped rifling on at least a portion of an inner surface of the at least one of the first fluid inlet, the second fluid inlet, and the outlet port for creating a corresponding fluid vortex for at least one of the first injection fluid, the second injection fluid, and the mixture of the first injection fluid and the second injection fluid, respectively.

17. The fluid delivery tube set of claim 1 , wherein the outlet port has at least one baffle member or mixing member disposed in an inner surface thereof.

18. The fluid delivery tube set of claim 1 , wherein the outlet port further comprises a pressure isolation valve integrated therewith.

19. The fluid delivery tube set of claim 18 , wherein the pressure isolation valve comprises a housing having a first lumen in fluid communication with the outlet port, a second lumen configured for connecting to a pressure transducer, and a valve member between the first lumen and the second lumen, wherein the valve member is configured for isolating the second lumen from the outlet port during a fluid injection procedure.

20. The fluid delivery tube set of claim 1 , further comprising a connector element on an exterior or an interior of at least one of a proximal end of the first fluid inlet, a proximal end of the second fluid inlet, and a distal end of the outlet port for connecting to a distal e

Assignees

• Bayer Healthcare Llc

Inventors

• Cowan Kevin
• Dedig James
• Spohn Michael
• Haury John

Classifications

• B01F2101/22

  Mixing of ingredients for pharmaceutical or medical compositions · CPC title

• A61M5/007

  for contrast media · CPC title

• A61M5/1408

  in parallel, e.g. manifolds, sequencing valves (access sites A61M39/02; tube connectors A61M39/10) · CPC title

• B01F25/421

  by moving the components in a convoluted or labyrinthine path (B01F25/433 takes precedence) · CPC title

• B01F25/30 Primary

  Injector mixers (mixing by creating vortex flow B01F25/10) · CPC title