CARTRIDGE FOR CONDUCTING DIAGNOSTIC ASSAYS

• US 20080153096A1
• Filed: 11/01/2007
• Published: 06/26/2008
• Est. Priority Date: 11/02/2006
• Status: Abandoned Application

• Current Assignee: Vectrant Technologies Inc.
• Original Assignee: Vectrant Technologies Inc.
• Inventors: Witty, Thomas R., Wobken, Mark E.
• Application Number:
  US11/933,900
• Publication Number:
  US 20080153096A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: B01L 2200/027 for microfluidic devices
• CPC Class Codes: B01L 2200/04 Exchange or ejection of cartridges, containers or reservoirs
• CPC Class Codes: B01L 2200/0647 Handling flowable solids, e.g. microscopic beads, cells, particles
• CPC Class Codes: B01L 2200/10 Integrating sample preparation and analysis in single entity, e.g. lab-on-a-chip concept
• CPC Class Codes: B01L 2200/16 Reagents, handling or storing thereof
• CPC Class Codes: B01L 2300/0636 Integrated biosensor, microarrays
• CPC Class Codes: B01L 2300/069 Absorbents; Gels to retain a fluid
• CPC Class Codes: B01L 2300/0816 Cards, e.g. flat sample carriers usually with flow in two horizontal directions
• CPC Class Codes: B01L 2300/0867 Multiple inlets and one sample wells, e.g. mixing, dilution
• CPC Class Codes: B01L 2300/1822 using Peltier elements
• CPC Class Codes: B01L 2400/0406 capillary forces
• CPC Class Codes: B01L 2400/0487 fluid pressure, pneumatics
• CPC Class Codes: B01L 2400/0605 check valves
• CPC Class Codes: B01L 2400/0644 rotary valves
• CPC Class Codes: B01L 3/502715 characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
• CPC Class Codes: B01L 3/502761 specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads, for physically stretching molecules investigating characteristics of particles G01N15/00
• CPC Class Codes: B01L 3/5082 Test tubes per se
• CPC Class Codes: B01L 7/52 with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples amplification or hybridisation processes per se C12Q1/68; controlling sequential reactions for synthesis B01J19/0046

Abstract

Provided is a cartridge for use in conducting diagnostic assays. The cartridge is configured to maintain sample fluids in a sealed manner and may be used to conduct one or more assays from a single patient sample within a single cartridge. Assays that may be conducted with the cartridge of the present invention include immunoassays and molecular assays. Methods of use for the cartridge and a system for using of the cartridge in combination with a module are also provided.

Claims

1. A cartridge configured to perform at least two assays comprising:

an input port for receiving a fluid sample;

at least one immunoassay fluid passageway for conducting an immunoassay; and

at least one molecular assay fluid passageway for conducting a molecular assay,

wherein the cartridge is placed into a module with detection means that record results of the immunoassay and the molecular assay.

2. The cartridge of claim 1, wherein the detection means are selected from the group consisting of fluorescence, absorbance, luminescence, electrochemical changes, and magnet pull.

3. The cartridge of claim 1, wherein the at least one immunoassay fluid passageway comprises a conjugate.

4. The cartridge of claim 3, wherein the conjugate is selected from the group consisting of labeled antibodies, labeled nucleic acids, and labeled particles.

5. The cartridge of claim 4, wherein the labeled particles are selected from the group consisting of magnetic particles, paramagnetic particles, fluorescent particles, resins, enzymes, and fluorophores.

6. The cartridge of claim 3, wherein the conjugate lines an interior wall of the at least one immunoassay fluid passageway.

7. The cartridge of claim 1, wherein the at least one immunoassay fluid passageway comprises an absorbent pad comprising capillary pumps.

8. The cartridge of claim 1, wherein the at least one immunoassay fluid passageway comprises a capture zone comprised of a permeable material.

9. The cartridge of claim 8, wherein the permeable material is selected from the group consisting of nitrocellulose, cellulose acetate, hydroxypropylcellulose, phenolic resins, and textured polypropylenes.

10. The cartridge of claim 1, wherein the at least one molecular assay fluid passageway is in communication with at least two chambers.

11. The cartridge of claim 10, wherein at least one of the at least two chambers is a chamber for storing reagents and/or buffers required to carry out the molecular assay and another of the at least two chambers is a purification chamber where the sample is mixed with the reagents and/or buffers.

12. The cartridge of claim 11, further comprising one or more valves for facilitating communication between the at least one molecular assay fluid passageway and the at least two chambers.

13. The cartridge of claim 12, wherein one or more valves are selected from the group consisting of rotary valves, one-way valves, and two-way valves.

14. The cartridge of claim 1, wherein the module is equipped with at least one actuator for facilitating movement of the sample through the molecular assay fluid passageways.

15. The cartridge of claim 14, wherein the at least one actuator is a mixing actuator that facilitates mixing of the sample with reagents required to carry out the molecular assay.

16. The cartridge of claim 15, wherein the mixing actuator is selected from a piezo-electric device and an ultrasound device.

17. The cartridge of claim 15, wherein the module further comprises a magnetic actuator for controlling magnetic particles used for purifying nucleic acids for the molecular assay.

18. The cartridge of claim 1, further comprising at least two independently controllable temperature chambers, wherein the molecular assay is a thermal cycling amplification assay.

19. The cartridge of claim 18, wherein the at least two temperature chambers are coupled to an energy source that generates heat.

20. The cartridge of claim 1, further comprising at least one pressure port in communication with the immunoassay fluid passageways and the molecular assay fluid passageways.

21. The cartridge of claim 20, wherein the pressure port is coupled to a pressure source selected from pneumatic pressure and hydroelectric pressure.

22. The cartridge of claim 1, further comprising a waste chamber in communication with the immunoassay fluid passageway.

23. The cartridge of claim 1, further comprising a waste chamber in communication with the molecular fluid passageway.

24. The cartridge of claim 1, wherein the sample is blood and the cartridge further comprises a filter to separate plasma from other blood products.

25. The cartridge of claim 24, wherein the immunoassay and the molecular assay are carried out on the plasma.

27. The method of claim 1, wherein the detection means are selected from the group consisting of fluorescence, absorbance, luminescence, electrochemical changes, and magnet pull.

50. The method of claim 1, further comprising a waste chamber in communication with the immunoassay fluid passageway and a waste chamber in communication with the molecular fluid passageway.

58. The system of claim 1, wherein the module is equipped with at least one actuator for facilitating movement of the sample and reagents through at least one of the at least two fluid passageways.

59. The system of claim 58, wherein the at least one actuator is a mixing actuator that facilitates mixing of the sample with reagents required to carry out at least one of the at least two assays.

60. The system of claim 59, wherein the mixing actuator is selected from a piezo-electric device and an ultrasound device.

26. A method of performing an immunoassay and a molecular assay on a single sample comprising the steps of:

obtaining a sample from a patient; and

transferring the sample to a cartridge comprising at least one immunoassay fluid passageway for conducting the immunoassay and at least one molecular assay fluid passageway for conducting the molecular assay,

wherein the cartridge is placed into a module with detection means that record results of the immunoassay and the molecular assay.

28. The method of claim 26, wherein the sample is blood.

29. The method of claim 28, wherein the blood is taken from the patient using a venipuncture tube.

30. The method of claim 29, wherein the venipuncture tube is inserted directly into an input port of the cartridge, wherein the input port is in communication with the at least one immunoassay fluid passageway and the at least one molecular assay fluid passageway.

31. The method of claim 28, wherein the blood is taken from the patient using a primary collection tube.

32. The method of claim 31, wherein the blood is taken from the primary collection tube and inserted into an input port of the cartridge using a pipette, wherein the input port of the cartridge is in communication with the at least one immunoassay fluid passageway and the at least one molecular assay fluid passageway.

33. The method of claim 28, wherein the cartridge further comprises a filter that filters plasma from other blood products, wherein the immunoassay and the molecular assay are carried out on the plasma.

34. The method of claim 26, wherein the at least one immunoassay fluid passageway comprises a conjugate.

35. The method of claim 33, wherein the conjugate is selected from the group consisting of labeled antibodies, labeled nucleic acids, and labeled particles.

36. The method of claim 34, wherein the labeled particles are selected from the group consisting of magnetic particles, paramagnetic particles, fluorescent particles, resins, enzymes, and fluorophores.

37. The method of claim 26, wherein the conjugate lines an interior wall of the at least one immunoassay fluid passageway.

38. The method of claim 26, wherein the at least one molecular assay fluid passageway is in communication with at least two chambers.

39. The method of claim 37, wherein at least one of the at least two chambers is a chamber for storing reagents and/or buffers required to carry out the molecular assay and another of the at least two chambers is a purification chamber where the sample is mixed with the reagents and/or buffers.

40. The method of claim 37, further comprising one or more valves for facilitating communication between the at least one molecular assay fluid passageway and the at least two chambers.

41. The method of claim 39, wherein one or more valves are selected from the group consisting of rotary valves, one-way valves, and two-way valves.

42. The method of claim 26, wherein the module is equipped with at least one actuator for facilitating movement of the sample through the molecular assay fluid passageways.

43. The method of claim 41, wherein the at least one actuator is a mixing actuator that facilitates mixing of the sample with reagents required to carry out the molecular assay.

44. The method of claim 42, wherein the mixing actuator is selected from a piezo-electric device and an ultrasound device.

45. The method of claim 42, wherein the module further comprises a magnetic actuator for controlling magnetic particles used for purifying nucleic acids for the molecular assay.

46. The method of claim 26, further comprising at least two independently controllable temperature chambers, wherein the molecular assay is a thermal cycling amplification assay.

47. The method of claim 45, wherein the at least two temperature chambers are coupled to an energy source that generates heat.

48. The method of claim 26, further comprising at least one pressure port in communication with the immunoassay fluid passageways and the molecular assay fluid passageways.

49. The method of claim 47, wherein the pressure port is coupled to a pressure source selected from pneumatic pressure and hydroelectric pressure.

51. A system for conducting at least two assays on a single patient sample, comprising:

a cartridge comprising an input port for receiving a sample, at least two fluid passageways for performing the at least two assays, and at least one pressure port for regulating the movement of fluid through the fluid passageways; and

a module for housing the cartridge comprising detection means for recording results of the at least two assays.

52. The system of claim 51, wherein the detection means are selected from the group consisting of fluorescence, absorbance, luminescence, electrochemical changes, and magnet pull.

53. The system of claim 51, wherein the at least two assays are independently selected from the group consisting of immunoassays, molecular assays, electrolyte assays, coagulation assays, routine chemistry assays, and hematology assays.

54. The system of claim 51, wherein the at least two fluid passageways are independently in communication with at least two waste chambers.

55. The system of claim 51, wherein the cartridge comprises at least two chambers for storing reagents and/or buffers required to carry out the at least two assays.

56. The system of claim 55, further comprising one or more valves for facilitating communication between the at least two fluid passageway and the at least two chambers.

57. The system of claim 56, wherein one or more valves are selected from the group consisting of rotary valves, one-way valves, and two-way valves.

61. The system of claim 55, wherein the at least two chambers are subject to independent temperature control via an energy source.

62. The system of claim 61, wherein the energy source is a heating source selected from the group consisting of a heater, a heat pump, a light energy source, and microwaves.

63. The system of claim 61, wherein the energy source is a cooling source selected from the group consisting of recirculating coolers, thermoelectric coolers, liquid-to-liquid cooling systems, and ambient cooling systems.

64. The system of claim 51, wherein the cartridge further comprises at least one pressure port in communication with the at least two fluid passageways.

65. The system of claim 64, wherein the at least one pressure port is coupled to a pressure source selected from pneumatic pressure and hydroelectric pressure.

66. The system of claim 51, wherein the sample is obtained from the patient using a venipuncture tube, wherein the venipuncture tube is inserted directly into the input port.

67. The system of claim 51, wherein the sample is obtained from the patient using a primary collection tube, wherein the sample taken from the primary collection tube and inserted into the input port of the cartridge using a pipette.

68. The system of claim 51, wherein the patient sample is blood and the cartridge further comprises a filter to separate plasma from other blood products

69. The system of claim 68, wherein the at least two assays are performed on the plasma.