IP Library › Granted Patent US 12,329,150
Granted Patent B2
US 12,329,150 · App. 18/430,191 · Granted Jun 17, 2025

Devices and methods to improve and assess viability of human livers

Inventors: Mustafa Korkut Uygun (Boston, MA); Bote G. Bruinsma (Boston, MA); Maria-Louisa Izamis (Boston, MA)
Assignee: The General Hospital Corporation
A01N1/143A01N1/126
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Quick Facts
Patent No.
US 12,329,150
App. No.
18/430,191
Granted
Jun 17, 2025
Kind
B2
Abstract

The present invention relates to organ perfusion systems that can be used at room temperature. The organ perfusion systems do not comprise a temperature controller. In some embodiments, the organ perfusion systems do not comprise a cleaning device for cleaning the perfusion fluid. The perfusion fluid can comprise Williams' medium E. The organ perfusion systems can be portable and can be used to preserving an organ, preventing ischemic damage in an organ, or recovering an ischemically damaged organ.

Claims (28)

1. A method of reducing ischemic damage in an organ, the method comprising:

encasing an organ removed from a subject in an organ preservation container comprising a perfusion fluid at a temperature of about 15° C. to about 25° C., wherein the organ is at least partially immersed in the perfusion fluid;

perfusing the organ with a fluidic circuit system having a first end connected to the perfusion fluid stored in the organ preservation container and a second end connected to the organ; and

increasing an oxygen level in the perfusion fluid and/or the organ by placing the organ preservation container in an oxygenated box,

wherein the organ preservation container is gas permeable.

2. The method of claim 1 , further comprising at least partially immersing one or more components of the fluidic circuit system in the perfusion fluid.

3. The method of claim 1 , wherein the fluidic circuit system is configured to draw the perfusion fluid through the first end.

4. The method of claim 1 , wherein the organ is a liver.

5. The method of claim 1 , further comprising measuring a pressure of the perfusion fluid using a pressure sensor in fluid communication with the organ.

6. The method of claim 5 , further comprising controlling the pressure of the perfusion fluid by using a pump, wherein the pump is configured to control the pressure of the perfusion fluid as a function of a measurement of the pressure sensor.

7. The method of claim 6 , wherein the pump is at least partially immersed in the perfusion fluid stored in the organ preservation container.

8. The method of claim 1 , further comprising removing bubbles from the perfusion fluid by using a bubble-removing device.

9. The method of claim 8 , further comprising collecting a product produced by the organ by connecting a second container to the organ.

10. The method of claim 9 , wherein the product is bile.

11. The method of claim 1 , further comprising increasing an oxygen level in the perfusion fluid by using an oxygenator.

12. The method of claim 1 , wherein the perfusion fluid comprises Williams' medium E, insulin, one or more antibiotics, hydrocortisone, or any combinations thereof.

13. A method of recovering an ischemically damaged organ, the method comprising:

encasing an organ removed from a subject in an organ preservation container comprising a perfusion fluid at a temperature of about 15° C. to about 25° C., wherein the organ is at least partially immersed in the perfusion fluid; and

perfusing the organ with a fluidic circuit system having a first end connected to the perfusion fluid stored in the organ preservation container and a second end connected to the organ,

wherein the perfusion fluid comprises a first perfusion fluid having a first pressure and a second perfusion fluid having a second pressure that is greater than the first pressure, and

wherein the organ comprises a first blood vessel and a second blood vessel, and the fluidic circuit system comprises: (a) a first fluidic circuit connected to the first blood vessel and configured to flow the first perfusion fluid through the first blood vessel, and (b) a second fluidic circuit connected to the second blood vessel and configured to flow the second perfusion fluid through the second blood vessel.

14. The method of claim 13 , wherein the first fluidic circuit and the second fluidic circuit share a common fluidic pathway.

15. The method of claim 13 , further comprising independently controlling the first fluidic circuit from the second fluidic circuit.

16. The method of claim 13 , further comprising not independently controlling the first fluidic circuit from the second fluidic circuit.

17. The method of claim 13 , wherein the first pressure is in a range of 1 to 10 mmHg.

18. The method of claim 15 , wherein the second pressure is in a range of 20 to 120 mmHg.

19. The method of claim 13 , further comprising measuring one or both of the first or second pressures of the perfusion fluid using one or more pressure sensors in fluid communication with the organ.

20. The method of claim 19 , further comprising controlling one or both of the first or second pressures of the perfusion fluid by using a pump, wherein the pump is configured to control the one or both of the first or second pressures of the perfusion fluid as a function of a measurement of the one or more pressure sensors.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 11, 2024
From: UYGUN, MUSTAFA KORKUT; BRUINSMA, BOTE G.; IZAMIS, MARIA-LOUISA
To: THE GENERAL HOSPITAL CORPORATION
Reel/Frame 066719/0363 →
Continuity (4)
Division 17175160 · Feb 12, 2021
Division 15125918
Provisional Application 61952461 · Mar 13, 2014
Related Publication 20240284901A1 · Aug 29, 2024
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