Integration of fluids and reagents into self-contained cartridges containing particle-based sensor elements and membrane-based sensor elements

• US 20060257991A1
• Filed: 12/22/2004
• Published: 11/16/2006
• Est. Priority Date: 02/27/2004
• Status: Abandoned Application

• Current Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Original Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Inventors: Ballard, Karri L., McDevitt, John T., Christodoulides, Nick J., Floriano, Pierre N., Anslyn, Eric, Neikirk, Dean, Shear, Jason
• Application Number:
  US11/020,442
• Publication Number:
  US 20060257991A1
• Time in Patent Office: Days
• US Class Current: 435/287.200
• CPC Class Codes: C12M 41/36 of biomass, e.g. colony counters or by turbidity measurements electrooptical investigation of individual particles G01N15/14, flow cytometers G01N15/1404

Abstract

Described herein is an analyte detection device and method related to a portable instrument suitable for point-of-care analyses. In some embodiments, a portable instrument may include a disposable cartridge, an optical detector, a sample collection device and/or sample reservoir, reagent delivery systems, fluid delivery systems, one or more channels, and/or waste reservoirs. Use of a portable instrument may reduce the hazard to an operator by reducing an operator'"'"'s contact with a sample for analysis. The device is capable of obtaining diagnostic information using cellular- and/or particle-based analyses and may be used in conjunction with membrane- and/or particle-based analysis cartridges. Analytes, including proteins and cells and/or microbes may be detected using the membrane and/or particle based analysis system.

Claims

1. A cartridge for use in an analyte detection system comprising:

a body;

one or more particle-based detection systems positioned on or in the body;

one or more membrane-based detection systems positioned on or in the body; and

one or more channels in the body wherein at least one of the channels is configured to carry one or more fluids to at least one of the particle-based detection systems and to at least one of the membrane-based detection systems.

2. The cartridge of claim 1, wherein at least one of the particle-based detection systems comprises:

a supporting member comprising one or more cavities formed within the supporting member; and

one or more particles positioned within at least one of the cavities.

3. The cartridge of claim 2, further comprising a plurality of particles positioned within a plurality of cavities, and wherein the system is configured to substantially simultaneously detect a plurality of analytes in at least one of the fluids.

7. The cartridge of claim 2, wherein at least one of the cavities is configured to allow fluid to pass through the supporting member during use.

9. The cartridge of claim 2, wherein at least one of the particle-based detection systems further comprises a cover layer positioned over at least one of the cavities, wherein the cover layer is configured to inhibit dislodgment of at least one of the particles during use, and wherein the cover layer is positioned such that a channel is formed between an upper surface of the supporting member and the cover layer such that at least one of the fluids passes through the channel during use.

17. The cartridge of claim 2, wherein at least one of the particles is composed of a polymeric resin, and further comprising a receptor molecule coupled to the polymeric resin.

24. The cartridge of claim 2, wherein at least one of the particles is composed of a polymeric resin, and further comprising a biopolymer coupled to the polymeric resin, and wherein the biopolymer undergoes a chemical reaction in the presence of an analyte to produce a signal.

27. The cartridge of claim 2, wherein at least one of the particles is configured to entrap microbes.

28. The cartridge of claim 2, wherein at least one of the particles is configured to have a plurality of pores having a diameter of less than about 1 μ

m.

29. The cartridge of claim 1, wherein at least one of the membrane-based detection systems comprises a membrane.

31. The cartridge of claim 29, further comprising a membrane support in contact with the membrane, wherein the membrane support is configured to maintain the membrane in a substantially planar orientation during use.

33. The cartridge of claim 31, wherein the membrane support comprises pores that allow fluid to flow through the membrane support at a speed that is equal to or greater than the speed that fluid passes through membrane.

34. The cartridge of claim 31, wherein the membrane support provides sufficient support of the membrane during use to inhibit sagging of the membrane.

35. The cartridge of claim 29, further comprising a top member positioned at a spaced distance above the membrane such that a first cavity is formed between the top member and the membrane, and wherein the top member covers at least a portion of the membrane.

36. The cartridge of claim 35, wherein the top member comprises a fluid inlet configured to allow fluid to be introduced to the membrane through the top member.

37. The cartridge of claim 35, wherein the top member comprises a wash fluid outlet configured to allow fluid to pass across the membrane to a waste reservoir during a washing operation.

43. The cartridge of claim 29, further comprising a bottom member positioned below the membrane, wherein the bottom member is configured to receive fluid flowing through the membrane during use.

51. The cartridge of claim 1, further comprising one or more fluid delivery systems.

52. The cartridge of claim 1, further comprising one or more fluid delivery systems positioned in or on the body.

53. The cartridge of claim 1, further comprising one or more microvalves for directing at least one of the fluids through the body.

54. The cartridge of claim 1, further comprising one or more sample reservoirs positioned in or on the body, wherein at least one of the sample reservoirs is configured for mixing one or more samples with one or more reagents.

55. The cartridge of claim 1, further comprising one or more traps positioned in or on the body, wherein at least one of the traps is configured for removing entrained gas from at least one of the fluids.

57. The cartridge of claim 1, wherein at least one of the channels is configured to connect at least one of the particle-based detection systems to at least one of the membrane-based detection systems.

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56. An analyte detection system comprising:

a cartridge, the cartridge comprising;

a body;

one or more particle-based detection systems positioned in or on the body;

one or more membrane-based detection systems positioned in or on the body; and

one or more channels in the body configured to transport one or more fluids to at least one of the particle-based detection systems and to at least one of the membrane-based detection systems; and

an optical platform optically coupled to at least one of the particle-based detection systems and/or at least one of the membrane-based detection systems.