Microfluidic device and method of loading sample into the microfluidic device
AssigneeSamsung Electronics Co., Ltd.
InventorBeom-seok Lee
Life of this patent
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Abstract
Provided is a microfluidic device. The microfluidic device includes a sample chamber in which a sample is accommodated. The sample chamber includes: an introduction portion including a loading hole through which the sample is loaded; an accommodation portion including a discharge hole; and a neck portion forming a boundary between the introduction portion and the accommodation portion. The neck portion provides a capillary pressure for controlling flow of the sample between the introduction portion and the accommodation portion.
Claims20
A microfluidic device comprising:
- a sample chamber in which a sample is accommodated, wherein the sample chamber comprises:
- an introduction portion comprising a loading hole through which the sample is loaded;
- an accommodation portion comprising a discharge hole;
- and
- a neck portion which forms a boundary between the introduction portion and the accommodation portion and provides a capillary pressure for controlling flow of the sample between the introduction portion and the accommodation portion,
- wherein a bottom surface of the introduction portion is inclined upward to the neck portion from the loading hole to prevent flowing backward of the sample, and
- wherein a distance from a center of the microfluidic device to a sidewall of the sample chamber gradually increases from the neck portion to the discharge hole.
A microfluidic device comprising:
- a sample chamber in which a sample is accommodated, wherein the sample chamber comprises an introduction portion comprising a loading hole through which the sample is loaded, and a neck portion which provides a capillary pressure for controlling flow of the sample between the introduction portion and the accommodation portion, wherein a bottom surface of the introduction portion is inclined upward to the neck portion from the loading hole to prevent flowing backward of the sample, and wherein a distance from a center of the microfluidic device to a sidewall of the sample chamber gradually increases from the neck portion to the discharge hole;
- and
- an analysis unit which receives and analyzes the sample from the sample chamber,
- wherein the analysis unit comprises:
- a sample measuring portion which measures the sample;
- and
- a sample detection chamber which is connected to the sample measuring portion and in which a portion of the sample exceeding a capacity of the sample measuring portion is accommodated;
- and
- a surplus sample chamber which is connected to the sample detection chamber and in which a portion of the sample exceeding a capacity of the sample detection chamber is accommodated.
A microfluidic device comprising:
- a sample chamber in which a sample is accommodated;
- and
- an analysis unit which receives the sample from the sample chamber and comprises at
- least one reaction chamber for analyzing the sample, wherein the sample chamber comprises:
- a loading hole through which the sample is loaded;
- a discharge hole which is connected to the analysis unit;
- and a neck portion comprising a capillary valve which is disposed between the loading hole and the discharge hole and passes the sample only when a predetermined pressure is applied to the sample, wherein the capillary valve comprises a protrusion formed by first and second inclined portions of a bottom surface of the sample chamber, and wherein a distance from the center of the microfluidic device to a sidewall of the sample chamber gradually increases from the neck portion to the discharge hole.
Dependencies are inferred from the claim text.