Composite mixer

• US 8,308,340 B2
• Filed: 11/22/2005
• Issued: 11/13/2012
• Est. Priority Date: 11/23/2004
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Ferrante, Joseph M., Janna, Si, Mayr, Thomas, Odegard, Jeremy, Phillips, Wayne, Schuelke, David
• Primary Examiner(s): SORKIN, DAVID L
• Application Number:
  US11/791,255
• Publication Number:
  US 20080316855A1
• Time in Patent Office: 2,548 Days
• Field of Search: 138/42, 222/135, 222/145.6, 222/459, 222/137, 366/158.5, 366/181.5, 366336-341, 366/162.3
• US Class Current: 366/162.3
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 2017/00495 for two-component glue
• CPC Class Codes: B01F 25/42 in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions

Abstract

Devices and methods for mixing a clotting agent with other inputs such as blood, blood derived product, bone marrow, and/or bone marrow derived product to form a congealed mixture.

Claims

1. A mixing device comprising

a body comprising:

a passageway that connects a first input port attaching a first container, a second input port attaching a second container, and an output port attaching a receiving container; and

a base configured to rest on top of a flat surface such that the first input port, the second input port, and the output port extend generally upwardly, the passageway for mixing a clotting agent with an input material, the first container containing the clotting agent, the second container containing the input material, and the receiving container for receiving a mixture of the clotting agent and the input material,

wherein a mixer portion of the passageway has a turbulent flow inducing shape; and

wherein a diameter of the first container differs from a diameter of the second container, wherein a ratio of the diameter of the first container to the diameter of the second container controls a ratio of the clotting agent to the input material in the mixture that is mixed by the mixing device.

2. The mixing device of claim 1, in which the mixer portion comprises an hourglass-shaped tubular portion.

3. The mixing device of claim 1, in which the mixer portion comprises a shape of repeating hourglasses.

4. The mixing device of claim 1, in which the mixer portion comprises a first portion and a second portion, in which a diameter of the first portion is greater than a diameter of the second portion.

5. The mixing device of claim 1, in which the mixer portion comprises a tubular portion having a circular cross section.

6. The mixing device of claim 1, in which the mixer portion comprises a tubular portion having a cross section shape that varies along a length of the portion.

7. The mixing device of claim 1, in which the mixer portion comprises a first portion and a second portion, in which a width of the first portion is greater than a width of the second portion.

8. The mixing device of claim 1, in which the mixer portion comprises a first portion, a second portion, and a third portion, in which a width of the first portion is greater than a width of the second portion and the width of the second portion is less than a width of the third portion.

9. The mixing device of claim 1, in which the mixer portion comprises a first portion and a second portion, in which a cross sectional area of the first portion is greater than a cross sectional area of the second portion.

10. The mixing device of claim 1, in which the mixer portion comprises a first portion, a second portion, and a third portion, in which a cross sectional area of the first portion is greater than a cross sectional area of the second portion and the cross sectional area of the second portion is less than a cross sectional area of the third portion.

11. The mixing device of claim 1, in which the mixer comprises a first portion, a second portion, a third portion, and a fourth portion in which a cross sectional area of the first portion is greater than a cross sectional area of the second portion, the cross sectional area of the second portion is less than a cross sectional area of the third portion, and the cross sectional area of the third portion is greater than a cross sectional area of the fourth portion.

12. The mixing device of claim 1, in which the mixer portion comprises a portion having a tortuous shape.

13. The mixing device of claim 1, in which the mixer portion comprises a first portion, a second portion, and a third portion, in which a diameter of the first portion is greater than a diameter of the second portion and the diameter of the second portion is less than a diameter of the third portion.

14. A mixing device comprising

a body comprising:

a passageway that connects a first input port attaching a first syringe, a second input port attaching a second syringe, and an output port attaching a receiving syringe; and

a base configured to rest on a flat surface such that the first input port, the second input port, and the output port extend generally upwardly, the passageway for mixing a clotting agent with an input material, the first syringe containing the clotting agent, the second syringe containing the input material, and the receiving syringe for receiving a mixture of the clotting agent and the input material,

wherein a mixer portion of the passageway has a turbulent flow inducing shape; and

wherein the mixing device is configured to ensure that the first input syringe and the second input syringe are depressed at the same rate.

15. The mixing device of claim 14 wherein a handle ensures that the first input syringe and the second input syringe are depressed at the same rate.

16. The mixing device of claim 15 wherein the handle covers both a plunger of the first input syringe and a plunger of a second input syringe.

17. The mixing device of claim 15 wherein the handle ensures that the first input syringe and the second input syringe are depressed at the same time.

18. The mixing device of claim 14 wherein the first input syringe and the second input syringe are attached to one another to ensure that the first input syringe and the second input syringe are depressed at the same rate.

19. The mixing device of claim 14 the first input syringe and the second input syringe are molded together.

20. A mixing device comprising

a body comprising:

a passageway that connects a first input port attaching a first syringe, a second input port attaching a second syringe, and an output port attaching a receiving syringe; and

a base configured to rest on a flat surface such that the first input port, the second input port, and the output port extend generally upwardly, the passageway for mixing a clotting agent with an input material, the first syringe containing the clotting agent, the second syringe containing the input material, and the receiving syringe for receiving a mixture of the clotting agent and the input material,

wherein a mixer portion of the passageway has a turbulent flow inducing shape;

wherein the mixing device is configured to ensure that the first input syringe and the second input syringe are depressed at the same rate; and

wherein a diameter of the first syringe differs from a diameter of the second syringe, wherein a ratio of the diameter of the first syringe to the diameter of the second syringe controls a ratio of the clotting agent to the input material in a mixture that is mixed by the mixing device.