Microfluidic PCR device
First Claim
1. A microfluidic device, comprising:
- a body having a first side and a second side opposite the first side, said first side having;
at least two amplification reaction chambers, the amplification reaction chambers configured to store reagents and samples;
an inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers;
a main channel fluidically connected to the inlet region; and
at least two secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the amplification reaction chambers,wherein the amplification reaction chambers extend within the body for a first depth, the main channel extends within the body for a second depth, the secondary channels extend within the body for a third depth, the first depth being greater than the second depth, and the second depth being greater than the third depth.
1 Assignment
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Accused Products
Abstract
A microfluidic device (1000-1005), comprising: a semiconductor body (2) having a first side (2a) and a second side (2b) opposite to one another, and housing, at the first side, a plurality of wells (4), having a first depth; an inlet region (30) forming an entrance point for a fluid to be supplied to the wells; a main channel (6a) fluidically connected to the inlet region, and having a second depth; and a plurality of secondary channels (6b) fluidically connecting the main channel to a respective well, and having a third depth. The first depth is higher than the second depth, which in turn is higher than the third depth. According to an aspect, the microfluidic device further comprises a cover layer (8), arranged above the first side of the semiconductor body, configured for sealing the wells and provided with at least a first valve hole (54) which extends through the cover layer and overlaps, at least partially, the secondary channels; and a flexible layer (14), arranged above the cover layer and provided with at least a protrusion (74) extending through the first valve hole towards the semiconductor body and overlapping, at least partially, the secondary channels, the flexible layer being configured such that, when a pressure is applied on it, the protrusion contacts the semiconductor body and enters the secondary channels thus fluidically isolating the wells from one another.
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Citations
38 Claims
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1. A microfluidic device, comprising:
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a body having a first side and a second side opposite the first side, said first side having; at least two amplification reaction chambers, the amplification reaction chambers configured to store reagents and samples; an inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers; a main channel fluidically connected to the inlet region; and at least two secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the amplification reaction chambers, wherein the amplification reaction chambers extend within the body for a first depth, the main channel extends within the body for a second depth, the secondary channels extend within the body for a third depth, the first depth being greater than the second depth, and the second depth being greater than the third depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 30)
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21. A microfluidic device, comprising:
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a body having a first side and a second side opposite to one another, said first side having; a plurality of amplification reaction chambers, the amplification reaction chambers configured to store reagents and samples; an inlet region forming an entrance point for a fluid to be supplied to the amplification reaction chambers; a main channel fluidically connected to the inlet region; and a plurality of secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the, the amplification reaction chambers; a cover layer, arranged above the first side of the body, configured to seal the amplification reaction chambers and provide at least a first valve hole which extends through the cover layer and overlaps, at least partially, the secondary channels; and a flexible layer, arranged above the cover layer and provided with at least a protrusion extending through the first valve hole towards the body and overlapping, at least partially, a respective one of the secondary channels, the flexible layer being configured such that, when a pressure is applied on the flexible layer, the protrusion contacts the body and enters within the respective one of the secondary channels, thus fluidically isolating a respective one of the plurality amplification reaction chambers from the main channel.
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22. A cartridge comprising:
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a microfluidic device including; a body having a first side and a second side opposite the first side, said first side having; at least two amplification reaction chambers, the amplification reaction chambers configured to store reagents and samples; an inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers; a main channel fluidically connected to the inlet region; and at least two secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the amplification reaction chambers, wherein the amplification reaction chambers extend within the body for a first depth, the main channel extends within the body for a second depth, the secondary channels extend within the body for a third depth, the first depth being greater than the second depth, and the second depth being greater than the third depth; and a device holder configured to house said microfluidic device, including a base portion and a cover portion, the cover portion having a protrusion, the base portion and the cover portion configured to be coupled to one another and to exert pressure on the microfluidic device along a direction parallel to a direction of extension of the protrusion, so that the protrusion contacts the body and enters within at least one of the secondary channels, thus fluidically isolating a respective one of the at least two amplification reaction chambers from the main channel. - View Dependent Claims (35, 36, 37, 38)
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23. A nucleic acid amplification apparatus, comprising:
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a microfluidic device that includes; a body having a first side and a second side opposite the first side, said first side having; at least two amplification reaction chambers, the amplification reaction chambers configured to store reagents and samples; an inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers; a main channel fluidically connected to the inlet region; and at least two secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the amplification reaction chambers, wherein the amplification reaction chambers extend within the body for a first depth, the main channel extends within the body for a second depth, the secondary channels extend within the body for a third depth, the first depth being greater than the second depth, and the second depth being greater than the third depth. - View Dependent Claims (24, 25, 26)
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27. A method of manufacturing a microfluidic device, comprising:
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forming at least two amplification reaction chambers for storing reagents and samples in a first side of a body that also includes a second side opposite to the first side, the at least two amplification reaction chambers having a first depth; forming an inlet region in the first side, the inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers; forming a main channel in the first side, the main channel being fluidically connected to the inlet region, and having a second depth; and forming at least two secondary channels in the first side, each one of the at least two secondary channels fluidically connecting the main channel to a respective one of the at least two amplification reaction chambers, respectively, and having a third depth; wherein the first depth is greater than the second depth, and the second depth is greater than the third depth. - View Dependent Claims (28)
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29. A method of manufacturing a microfluidic device, comprising:
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forming, at a first side of a body, at least two amplification reaction chambers for storing reagents and samples, an inlet region that is an entrance for a fluid to be supplied to the amplification reaction chambers;
a main channel fluidically connected to the inlet region; and
at least two secondary channels each fluidically connecting the main channel to a respective one of the at least two amplification reaction chambers, respectively, the body also having a second side opposite to the first side;arranging a cover layer above the first side of the body, so as to seal the amplification reaction chambers, the cover layer having at least a first valve hole that extends through the cover layer and overlaps, at least partially, at least one of the at least two secondary channels; and arranging a flexible layer above the cover layer, the flexible layer being provided with at least a protrusion extending through the first valve hole towards the body and overlapping, at least partially, at least one of the at least two secondary channels.
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31. A method of performing a chemical analysis, said method comprising:
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applying a sample to the inlet region of the microfluidic device including a body having a first side and a second side opposite the first side, said first side having; at least two amplification reaction chambers; an inlet region forming an entrance for a fluid to be supplied to the amplification reaction chambers; a main channel fluidically connected to the inlet region; and at least two secondary channels, each one of the secondary channels fluidically connecting the main channel to a respective one of the amplification reaction chambers, wherein the amplification reaction chambers extend within the body for a first depth, the main channel extends within the body for a second depth, the secondary channels extend within the body for a third depth, the first depth being greater than the second depth, and the second depth being greater than the third depth; inserting said microfluidic device into a reader device, activating said reader device and obtaining a result of a chemical analysis. - View Dependent Claims (32, 33, 34)
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Specification