摘要:
The invention is directed to a device for performing multiple analyses from one sample in parallel with a liquid sample. It is proposed that the device comprises reaction sections (7) connected to a venting system comprising venting channels (8), wherein the capillary force of the reaction sections (7) to the sample is greater than the capillary force of the venting system and the venting system is designed for venting several reaction sections (7) in common.
摘要:
A device comprising a valve in a tubular channel (3) to open and close said channel (3), said valve being formed by a first wall (2) of said tubular channel, said first wall (2) being made of a thermoplastic elastomeric material, and a second wall being made of a thermoplastic material, said first wall (2) and said second wall being irreversibly bonded to each other is disclosed. The device can be used advantageously for reliable analyses in automated procedures, e.g., to control fluid flows within said device.
摘要:
The present invention is related to a microfluidic device capable of conveying a liquid (19) by capillary forces. Said microfluidic device comprises a microfluidic channel system (10, 12, 14; 43, 44; 63, 64) with
i) one liquid supply compartment (81, 91, 101) and ii) a first channel (10) connected to the liquid supply compartment (81, 91, 101), having at least one non-closing valve (1, 65, 73) located downstream of the liquid supply compartment (81, 91, 101) and ii) a second channel (12, 43, 44). The second channel (12, 43, 44) branches-off from the first channel (10) downstream of the liquid supply compartment (81, 91, 101) but upstream of the at least one non-closing valve (1, 65, 73) and which re-united with the first channel (10) at the location of the non-closing valve (1, 65, 73) to form an outlet channel (14). The second channel (12, 43, 44) does not contain any non-closing or closing valve thus creating an unobstructed liquid flow path connecting the liquid supply compartment (81, 91, 101) with the outlet channel (14).
摘要:
A method is provided that conveniently allows rapid amplification of nucleic acids. Two different heat sources are used to heat the reaction mixture.
摘要:
The invention is directed to a disposable sample holding and processing device (1) dimensioned for being operated in a nucleic acid amplification apparatus for analyzing a liquid sample containing a nucleic acid by a nucleic acid amplification technique. The device (1) comprises chambers (15, 16) and channels (44) designed to perform the steps of capturing, amplification and detection of the nucleic acid within the device (1), and optionally also a lysis chamber (3). The binding chamber (15) contains a solid phase (14) for immobilization of a component of the sample to be analyzed, and the amplification chamber (16) is connected to the binding chamber (15) by a fluid channel (44). The device (1) comprises a rigid body (42) and at least one channel (44), the binding chamber (15) and the amplification chamber (16) are situated on side-surfaces (50) of the body (42), each of those side-surfaces (50), on which a channel (44), the binding chamber (15) or the amplification chamber (16) is situated, is covered by at least one wall (41) and these side-surfaces (50) are substantially vertical planes when the device (1) is operated in the nucleic acid amplification apparatus.
摘要:
The embodiments of the present invention are directed to an automatic apparatus (55), which is designed for performing nucleic acid analysis, optionally including sample preparation, with integrated disposable sample holding and processing devices (1), which devices (1) comprise a sample to be analyzed with the apparatus (55). The apparatus (55) comprises workstations (17, 40) for receiving, holding and processing such integrated disposable devices (1), a reagents station (56) for reagents (25), transfer means (36) for performing movements of an actuator, fluid actuation means for processing the sample (32) and reagents in said disposable devices (1), temperature control means (37) for heating or cooling, detection means for measuring a property of the processed samples (32), and control means for controlling the sample (32) preparation, the handling of the disposable devices (1) and the sample analysis performed by the apparatus (55).
摘要:
The present invention is directed to methods, devices and computer programs for preparing nucleic acids from a template nucleic acid by subjecting a sample to thermocycles. After a first number of thermocycles, a partial amount of the reaction mixture is being subjected to a second number of thermocycles. This two step amplification method allows to speed up overall reaction time without affecting the limit of detection.