IP Library Granted Patent US 12,290,762
Granted Patent B2
US 12,290,762 · App. 18/474,000 · Granted May 6, 2025

System for preparing solutions for chromatography

Inventor: Bjorn Markus Olovsson (Uppsala, SE)
Assignee: Cytiva Sweden AB
B01D15/166B01D15/22B01F23/49B01F25/31B01F35/2132B01F35/2133B01F35/2211B01F35/7176F04B23/04G01N30/32G01N30/34B01D15/16G01N2030/324G01N2030/347G01N30/8658
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Quick Facts
Patent No.
US 12,290,762
App. No.
18/474,000
Granted
May 6, 2025
Kind
B2
Abstract

A system for preparing solutions for chromatography application is disclosed. The system comprises a T-joint for preparing a buffer solution by mixing at least one first solution and a second solution. The T-joint receives the second solution from a solution supply unit connected to the T-joint. Further one or more low pressure pumps supply the one or more first solutions into the T-joint. The high pressure pump collects the buffer solution and delivers it to a chromatography apparatus.

Claims (40)

1. A system for performing inline blending of liquids, the system comprising:

a T-joint for preparing a buffer solution by mixing at least one first solution and a second solution, wherein the T-joint receives the second solution from a solution supply unit connected to the T-joint, and the T-joint is connected to the solution supply unit using at least one direct connection tube, and wherein the T-joint is connected through at least one valve to a further solution supply unit for supplying the at least one first solution;

at least one low pressure pump for supplying the at least one first solution into the T-joint; and

a high pressure pump for collecting the buffer solution and delivering to a chromatography apparatus,

the system being characterized in that said T-joint includes a configuration for mixing the at least one first solution and the second solution, wherein the configuration for mixing the at least one first solution and the second solution is a magnetic stirrer,

wherein the system is configured such that the low-pressure pump, the T-joint, and the magnetic stirrer operate at or below 0.7 mega Pascals (MPa).

2. The system of claim 1 , wherein the at least one first solution comprises an acid, a base, a salt solution, or a combination thereof.

3. The system of claim 1 further comprising a control system configured to control operation of the at least one low pressure pump for supplying the at least one first solution.

4. The system of claim 3 , wherein the control system is configured to control a flow rate of the at least one first solution supplied by the at least one low pressure pump, or a flow rate of the high pressure pump, which determines concentration of the buffer solution.

5. The system of claim 1 , further comprising at least one sensor configured to measure characteristics of the buffer solution received at the high pressure pump.

6. The system of claim 5 , wherein a sensor of the at least one sensor is configured to measure a conductivity associated with the buffer solution.

7. The system of claim 6 , wherein a sensor of the at least one sensor is configured to measure a pH level associated with the buffer solution.

8. The system of claim 1 , wherein the at least one valve includes a check valve.

9. The system of claim 1 , wherein the high pressure pump operates at a pressure from 0 to 20 mega Pascals (MPa).

10. The system of claim 1 , wherein the system does not comprise a pump for supplying the second solution to the T-joint.

11. A chromatography system comprising:

at least one chromatography column;

a T-joint for preparing a buffer solution by mixing at least one first solution and a second solution, wherein the T-joint receives the second solution from a solution supply unit connected to the T-joint, wherein the T-joint is connected to the solution supply unit using at least one direct connection tube, and wherein the T-joint is connected through at least one valve to a further solution supply unit for supplying the at least one first solution;

at least one low pressure pump for supplying the at least one first solution into the T-joint; and

a high pressure pump for collecting and delivering the buffer solution to the at least one chromatography column,

the chromatography system being characterized in that said T-joint includes a configuration for mixing the at least one first solution and the second solution, wherein the configuration for mixing the at least one first solution and the second solution is a magnetic stirrer,

wherein the system is configured such that the low-pressure pump, the T-joint, and the magnetic stirrer operate at a pressure of less than 0.7 mega Pascals (MPa).

12. The chromatography system of claim 11 , wherein the at least one first solution comprises an acid, a base, a salt solution, or a combination thereof.

13. The chromatography system of claim 11 , further comprising a control system configured to control operation of the at least one low pressure pump for supplying the at least one first solution and control a functioning of the T-joint to prepare the buffer solution.

14. The chromatography system of claim 13 , wherein the control system is configured to control a flow rate of the at least one first solution supplied by the at least one low pressure pump, or a flow rate of the high pressure pump, which determines concentration of the buffer solution.

15. The chromatography system of claim 11 , further comprising at least one sensor configured to measure characteristics of the buffer solution received at the high pressure pump.

16. The chromatography system of claim 15 , wherein a sensor of the at least one sensor is configured to measure a conductivity associated with the buffer solution.

17. The chromatography system of claim 15 , wherein a sensor of the at least one sensor is configured to measure a pH level associated with the buffer solution.

18. The chromatography system of claim 11 , wherein the at least one valve includes a check valve.

19. The chromatography system of claim 11 , wherein the high pressure pump operates at a pressure from 0 to 20 mega Pascals (MPa).

20. The chromatography system of claim 11 , wherein the system does not comprise a pump for supplying the second solution to the T-joint.

21. A system for performing inline blending or mixing of liquids in chromatography apparatus, the system comprising:

a T-joint for preparing a buffer solution by blending or mixing at least two initial solutions;

a liquid supply for each of the initial solutions, for supplying the respective initial solutions to the T-joint, one or more of the liquid supplies having a pump and one or more of the remaining liquid supplies having no pump, wherein the T-joint is connected to the one or more of the remaining liquid supplies by at least one direct connection tube, and wherein the T-joint is connected through at least one valve to the one or more of the liquid supplies having a pump; and

a liquid egress for removing the buffer solution from the T-joint, the liquid egress including a further pump operable at least to draw in solution from each of the liquid supplies which has no pump or the liquid supply which has a pump, and operable to deliver the buffer solution to a chromatography apparatus,

the system being characterized in that said T-joint includes a configuration for mixing the initial solutions, wherein the configuration for mixing the at least two initial solutions is a magnetic stirrer,

and wherein the system is configured such that the T-joint and the magnetic stirrer operate at a pressure of less than 0.7 mega Pascals (MPa).

22. The system of claim 21 , wherein the at least one valve includes a check valve.

23. The system of claim 21 , wherein the high pressure pump operates at a pressure from 0 to 20 mega Pascals (MPa).

24. The system of claim 21 , wherein the system does not comprise a pump for supplying a second of the initial solutions to the T-joint.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2023
From: OLOVSSON, BJORN MARKUS
To: GE HEALTHCARE BIO-SCIENCES AB
Reel/Frame 065014/0396 →
CHANGE OF NAME Recorded Sep 25, 2023
From: GE HEALTHCARE BIO-SCIENCES AB
To: CYTIVA SWEDEN AB
Reel/Frame 065022/0908 →
Priority Claims (1)
GB 1422107 · Dec 12, 2014 · national
Continuity (3)
Continuation 17156749 · Jan 25, 2021
Continuation 15533405
Related Publication 20240009594A1 · Jan 11, 2024
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