This invention relates to systems and apparatuses for liquid transfer and carrying out reactions.
Many diagnostic tests that involve biological reactions are required to be performed in laboratories by skilled technicians and/or complex equipment. Such laboratories may be the subject of government regulation. The costs of compliance with such regulations can increase the costs of diagnostic tests to patients and health care payers and exclude such tests from point-of-care facilities. There is a need for systems for performing diagnostic tests involving biological reactions that can be used without extensive training at the point of care.
The present disclosure provides systems, apparatuses and methods for transfer of liquids and processing of reactions, e.g., in diagnostic tests.
In one aspect, the disclosure features a system that includes a liquid transfer device that includes a housing having a pipette tip and a plunger assembly; and a reaction chamber, wherein the housing of the liquid transfer device is configured to sealably engage with the reaction chamber. In some embodiments, the housing of the liquid transfer device can include a seal component configured to sealably engage with the reaction chamber. In some embodiments, the reaction chamber can include a seal component configured to sealably engage with the liquid transfer device. The systems can further include a fluid reservoir, and the reaction chamber can optionally be configured to lockably engage with the fluid reservoir.
The liquid transfer device can be configured to lockably engage with the reaction chamber, e.g., without dispensing, prior to dispensing, and/or after dispensing a liquid sample.
In some embodiments, the reaction chamber includes one or more components of a biological reaction.
In another aspect, the disclosure features a liquid transfer device that includes a housing having a pipette tip; and a plunger assembly disposed within the housing and the pipette tip, wherein a portion of the plunger assembly is configured to engage a fluid reservoir such that the plunger assembly remains stationary relative to the fluid reservoir and the housing moves relative to the plunger assembly.
In some embodiments, movement of the housing relative to the plunger assembly results in creation of a vacuum within the pipette tip and, optionally, the plunger assembly can be configured to lock in a position resulting in creation of the vacuum. The housing can be configured to move relative to the plunger assembly by pushing the housing down on the fluid reservoir. The device can further be configured to provide an auditory and/or visual indication that the plunger assembly is in a position resulting in the creation of the vacuum.
A system can include the liquid transfer device and one or more of a fluid reservoir and reaction chamber. When a reaction chamber is included, the reaction chamber can be configured to unlock the plunger assembly when the liquid transfer device and the reaction chamber are interfaced.
In another aspect, the disclosure features a liquid transfer device configured to draw a sample from a fluid reservoir by pushing the device against the reservoir and systems that include the liquid transfer device and one or both of a reaction chamber and fluid reservoir.
In the systems described above, two or all three of the liquid transfer device, reaction chamber, and fluid reservoir can have compatible asymmetric cross-sections.
In another aspect, the disclosure features methods that include (i) obtaining a liquid sample from a sample reservoir using a liquid transfer device described above; and (ii) dispensing the liquid sample, e.g., into a reaction chamber comprising one or more components of a reaction.
In another aspect, the disclosure features methods that include (i) obtaining a liquid sample from a fluid reservoir using a liquid transfer device (e.g., a liquid transfer device described above); and (ii) dispensing the liquid sample into a reaction chamber, wherein the liquid transfer device sealably engages with the reaction chamber during or prior to dispensing.
In another aspect, the disclosure features methods that include (i) obtaining a liquid sample from a fluid reservoir using a liquid transfer device (e.g., a liquid transfer device described above); and (ii) dispensing the liquid sample into a reaction chamber, wherein the liquid transfer device lockably engages with the reaction chamber during or prior to dispensing. The methods can further include (iii) interfacing the reaction chamber and the fluid reservoir, such that the reaction chamber lockably engages with the fluid reservoir.
The systems, apparatuses, and methods disclosed herein can provide for simple analysis of unprocessed biological specimens. They can be used with minimal scientific and technical knowledge, and any knowledge required may be obtained through simple instruction. They can be used with minimal and limited experience. The systems and apparatuses allow for prepackaging or premeasuring of reagents, such that no special handling, precautions, or storage conditions are required. The operational steps can be either automatically executed or easily controlled, e.g., through the use of auditory and/or visual indicators of operation of the systems and apparatuses.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.
This application describes systems, apparatuses, and methods for transfer of liquids and processing of biological reactions (e.g., nucleic acid amplification reactions).
Referring to
In
In
The systems and apparatuses disclosed herein can be used to perform reactions, e.g., utilizing biological components. In some embodiments, the reactions involve production of nucleic acids, such as in nucleic acid amplification reactions. Exemplary nucleic acid amplification reactions suitable for use with the disclosed apparatuses and systems include isothermal nucleic acid amplification reactions, e.g., strand displacement amplification, nicking and extension amplification reaction (NEAR) (see, e.g., US 2009/0081670), and recombinase polymerase amplification (RPA) (see, e.g., U.S. Pat. Nos. 7,270,981; 7,666,598). In some embodiments, a microtube can contain one or more reagents or biological components, e.g., in dried form (see, e.g., WO 2010/141940), for carrying out a reaction.
The systems and apparatuses disclosed herein can be used to process various samples in reactions, e.g., utilizing biological components. In some embodiments, the samples can include biological samples, patient samples, veterinary samples, or environmental samples. The reaction can be used to detect or monitor the existence or quantity of a specific target in the sample. In some embodiments, a portion of the sample is transferred using a transfer device as disclosed herein.
In some embodiments, a liquid transfer device or pipette tip disclosed herein can be configured to collect and dispense a volume between 1 μl and 5 ml (e.g., between any two of 1 μl, 2 μl, 5 μl, 10 μl, 20 μl, 50 μl, 100 μl, 200 μl, 500 μl, 1 ml, 2 ml, and 5 ml).
The disclosure also features articles of manufacture (e.g., kits) that include one or more systems or apparatuses disclosed herein and one or more reagents for carrying out a reaction (e.g., a nucleic acid amplification reaction).
A number of embodiments of the invention have been described. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention. For example, a transfer device as described herein can include three or more pipette tips. Accordingly, other embodiments are within the scope of the following claims.
This application is a divisional of U.S. patent application Ser. No. 15/141,190, filed Apr. 28, 2016, which is a continuation and claims priority to U.S. patent application Ser. No. 13/242,999, filed Sep. 23, 2011, now U.S. Pat. No. 9,352,312, Issued May 31, 2016, the entire contents of which are incorporated by reference.
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20190039059 A1 | Feb 2019 | US |
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Parent | 15141190 | Apr 2016 | US |
Child | 16057209 | US |
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Parent | 13242999 | Sep 2011 | US |
Child | 15141190 | US |