Assay implementation in a microfluidic format
First Claim
Patent Images
1. A point of care analyzer comprising:
- a portable cartridge holding instrument; and
a microfluidic cartridge insertable in the portable cartridge holding instrument, wherein the cartridge is credit-card sized; and
wherein;
the microfluidic cartridge comprises;
a cytometry flow channel having transparent windows;
an intersecting region having an output connected to the cytometry flow channel;
a sample channel connected to a first input of the intersecting region;
a sheath fluid channel connected to a second input of the intersecting region;
a sheath fluid reservoir connected to the sheath fluid channel; and
a waste reservoir connected to the cytometry flow channel;
the intersecting region is for hydrofocusing a sample having particles from the sample channel with a sheath fluid into a single file core of particles;
the cytometry flow channel is for conveying the single file of particles with the sheath fluid through the transparent windows of the cytometry flow channel and to the waste reservoir;
when the microfluidic cartridge is inserted in the portable cartridge holding instrument, the transparent windows are aligned with one or more light sources and one or more detectors in the portable cartridge holding instrument to form both a scattering optical channel and a fluorescence optical channel; and
the microfluidic cartridge is disposable upon at least a partial filling of the waste reservoir with particles from the cytometry flow channel.
1 Assignment
0 Petitions
Accused Products
Abstract
An assay implementation in a microfluidic format in a cartridge relating to a point-of-care instrument platform for monitoring and diagnosing infectious diseases (e.g., AIDS and malaria). The platform may also provide a complete blood count. The instrument platform may hold the cartridge and a portion of an optical system for fluorescent and scattered light related analyses of blood sample in a flow channel of the cartridge.
-
Citations
34 Claims
-
1. A point of care analyzer comprising:
-
a portable cartridge holding instrument; and a microfluidic cartridge insertable in the portable cartridge holding instrument, wherein the cartridge is credit-card sized; and wherein; the microfluidic cartridge comprises; a cytometry flow channel having transparent windows; an intersecting region having an output connected to the cytometry flow channel; a sample channel connected to a first input of the intersecting region; a sheath fluid channel connected to a second input of the intersecting region; a sheath fluid reservoir connected to the sheath fluid channel; and a waste reservoir connected to the cytometry flow channel; the intersecting region is for hydrofocusing a sample having particles from the sample channel with a sheath fluid into a single file core of particles; the cytometry flow channel is for conveying the single file of particles with the sheath fluid through the transparent windows of the cytometry flow channel and to the waste reservoir; when the microfluidic cartridge is inserted in the portable cartridge holding instrument, the transparent windows are aligned with one or more light sources and one or more detectors in the portable cartridge holding instrument to form both a scattering optical channel and a fluorescence optical channel; and the microfluidic cartridge is disposable upon at least a partial filling of the waste reservoir with particles from the cytometry flow channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A point of care analyzer comprising:
-
a portable cartridge holding instrument; and a microfluidic cartridge insertable in the portable cartridge holding instrument, wherein the cartridge is credit-card sized; and wherein; the microfluidic cartridge comprises; a first cytometry flow channel having transparent windows; a first intersecting region having an output connected to the first cytometry flow channel; a first sample channel connected to a first input of the first intersecting region; a first sheath fluid channel connected to a second input of the first intersecting region; a first sheath fluid reservoir connected to the first sheath fluid channel; and a first waste reservoir connected to the an output of the first cytometry flow channel; a second intersecting region having an output connected to the first sample channel; a first blood reservoir having an output connected to the second intersecting region; a lysing reagent reservoir having an output connected to the second intersecting region a second cytometry flow channel having transparent windows; a third intersecting region having an output connected to the second cytometry flow channel; a second sample channel connected to a first input of the third intersecting region; a second sheath fluid channel connected to a second input of the third intersecting region; a second sheath fluid reservoir connected to the second sheath fluid channel; a second waste reservoir connected to an output of the second cytometry flow channel; a fourth intersecting region having an output connected to the second sample channel; a second blood reservoir having an output connected to the fourth intersecting region; and a sphering reagent reservoir having an output connected to the fourth intersecting region, wherein when the microfluidic cartridge is inserted in the portable cartridge holding instrument, the transparent windows are aligned with one or more light sources and one or more detectors in the portable cartridge holding instrument to form both a scattering optical channel and a fluorescence optical channel. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
-
-
33. A point of care analyzer comprising:
-
a portable cartridge holding instrument; and a microfluidic cartridge insertable in the portable cartridge holding instrument, wherein the cartridge is credit-card sized; and wherein; the microfluidic cartridge comprises; a cytometry flow channel having transparent windows; an intersecting region having an output connected to the cytometry flow channel; a sample channel connected to a first input of the intersecting region; a sheath fluid channel connected to a second input of the intersecting region; a sheath fluid reservoir connected to the sheath fluid channel; and a waste reservoir connected to the cytometry flow channel; the intersecting region is for hydrofocusing a sample having particles from the sample channel with a sheath fluid into a single file core of particles; the cytometry flow channel is for conveying the single file of particles with the sheath fluid through the transparent windows of the cytometry flow channel and to the waste reservoir; when the microfluidic cartridge is inserted in the portable cartridge holding instrument, the transparent windows are aligned with one or more light sources and one or more detectors in the portable cartridge holding instrument to form both a scattering optical channel and a fluorescence optical channel; and the microfluidic cartridge is disposable after an entry of any particles and/or sheath fluid from the cytometry flow channel to the waste reservoir. - View Dependent Claims (34)
-
Specification