The present invention is generally directed to a system configured to collect and capture aerosolized particles from a gas.
It is generally appreciated that systems exist for the collection of aerosolized particles from air, examples of which are described in U.S. Pat. Nos. 6,435,043; 6,769,316; 6,867,413; and 6,898,990, each of which is hereby incorporated by reference herein in its entirety for all purposes. In general, the systems collect the aerosolized particles onto substrate material that then must be manually handled to remove for subsequent particle analysis.
It is also appreciated that some particles, particularly some types of biological material such as viral particles, may pose a health risk to individuals that come into contact with them. Further, manual contact with the substrate may add a source of contamination that will affect results intended to reflect to content of the particles in the sampled gas.
Therefore, a need exists for an automated solution to remove and isolate the substrate material for particle analysis without the risk to the health of individuals as well as to sample integrity.
Systems, methods, and products to address these and other needs are described herein with respect to illustrative, non-limiting, implementations. Various alternatives, modifications and equivalents are possible.
An embodiment of an assembly for isolating a substrate is described that comprises a vacuum source; a substrate; a receptacle configured to position the substrate and to operatively couple to the vacuum source; and a vessel configured to operatively coupled to the receptacle, wherein the substrate is configured to move from the receptacle to the vessel in response to a differential pressure applied by the vacuum source.
In some cases, the substrate is constructed of polyurethane foam, and may include a perimeter area configured to reduce stiction. The substrate may also be configured to capture and retain a plurality of particles that can include biological material such as viral particles.
Also, in some implementations the receptacle comprises a chamber that positions the substrate and may be in fluid communication with the vessel and the vacuum source. In certain embodiments the differential pressure is greater than about 50 mbar.
An embodiment of a method for isolating a substrate is also described that comprises positioning a substrate in a receptacle; and moving the substrate from the receptacle to the vessel in response to a differential pressure.
The above embodiments and implementations are not necessarily inclusive or exclusive of each other and may be combined in any manner that is non-conflicting and otherwise possible, whether they are presented in association with a same, or a different, embodiment or implementation. The description of one embodiment or implementation is not intended to be limiting with respect to other embodiments and/or implementations. Also, any one or more function, step, operation, or technique described elsewhere in this specification may, in alternative implementations, be combined with any one or more function, step, operation, or technique described in the summary. Thus, the above embodiment and implementations are illustrative rather than limiting.
The above and further features will be more clearly appreciated from the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like reference numerals indicate like structures, elements, or method steps and the leftmost digit of a reference numeral indicates the number of the figure in which the references element first appears (for example, element 110 appears first in
Like reference numerals refer to corresponding parts throughout the several views of the drawings.
As will be described in greater detail below, embodiments of the described invention include a system configured to automatically and safely collect and capture aerosolized particles from a gas. More specially the particles may include biological material such as viral particles or bacterial particles, and the gas may include ambient air, breath from a living organism, or other gas that may include aerosolized biological material.
Computer 110 may include any type of computing platform such as a workstation, a personal computer, a tablet, a “smart phone”, one or more servers, compute cluster (local or remote), or any other present or future computer or cluster of computers. Computers typically include known components such as one or more processors, an operating system, system memory, memory storage devices, input-output controllers, input-output devices, and display devices. It will also be appreciated that more than one implementation of computer 110 may be used to carry out various operations in different embodiments, and thus the representation of computer 110 in
In some embodiments, computer 110 may employ a computer program product comprising a computer usable medium having control logic (e.g. computer software program, including program code) stored therein. The control logic, when executed by a processor, causes the processor to perform some or all of the functions described herein. In other embodiments, some functions are implemented primarily in hardware using, for example, a hardware state machine. Implementation of the hardware state machine so as to perform the functions described herein will be apparent to those skilled in the relevant arts. Also in the same or other embodiments, computer 110 may employ an internet client that may include specialized software applications enabled to access remote information via a network. A network may include one or more of the many types of networks well known to those of ordinary skill in the art. For example, a network may include a local or wide area network that may employ what is commonly referred to as a TCP/IP protocol suite to communicate. A network may include a worldwide system of interconnected computer networks that is commonly referred to as the internet, or could also include various intranet architectures. Those of ordinary skill in the related art will also appreciate that some users in networked environments may prefer to employ what are generally referred to as “firewalls” (also sometimes referred to as Packet Filters, or Border Protection Devices) to control information traffic to and from hardware and/or software systems. For example, firewalls may comprise hardware or software elements or some combination thereof and are typically designed to enforce security policies put in place by users, such as for instance network administrators, etc.
As described herein, embodiments of the described invention include an automated solution to remove and isolate substrate material from an instrument used to capture particles from a gas. Importantly, the solution substantially eliminates human contact with the substrate the preserve integrity of the collected sample and protect individuals from potentially harmful pathogens.
Substrate 210 may include a variety of materials configured to capture particles of interest and subsequently easily release the particles for analysis. Further, in some embodiments substrate 210 may include a substance or combination of substances configured to enhance capture and/or release of particles, stabilize biological particles, and/or enhance the viability of biological particles (e.g. the substance may be coated onto and/or impregnated into substrate 210). For example, substrate 210 may include polyurethane foam, porous polymers, glass or ceramic media, sintered material, electrically charged conductive media, or other substance known in the art. Also, the substance or combination of substances may include a liquid or gel disposed on the surface of substrate 210, and/or impregnated into the material of substrate 210, that may act to capture particles 213 and improve the efficiency of processing and/or improve the biological viability of particles 213. In some case the perimeter of substrate 210 may be free of the combination of substances in order to reduce/improve the degree of stiction between substrate 210 and receptacle 220 (e.g. promote slidability of substrate 210). Also, in the same or an alternative example, the perimeter of substrate 210 may include another substance that reduces the stiction where the substance may include a coating and/or be impregnated to some depth of the material of substrate 210 (e.g. a liquid, gel, plastic, etc.).
Further, vessel 310 may include any type of vessel known in the art, particularly vessel used for safe specimen collection and transport. Many types of vessels are compatible with analytical techniques such as, for example, what may be referred to as an Eppendorf tube.
In the presently described example, vessel 310 may be sealable via an attached lid, separate cover, cap, etc.
Continuing,
Having described various embodiments and implementations, it should be apparent to those skilled in the relevant art that the foregoing is illustrative only and not limiting, having been presented by way of example only. Many other schemes for distributing functions among the various functional elements of the illustrated embodiments are possible. The functions of any element may be carried out in various ways in alternative embodiments
The present application claims the priority benefit from U.S. patent application Ser. No. 63/110,641, filed Nov. 6, 2020. The disclosure of the foregoing application is incorporated herein by reference.
Number | Date | Country | |
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63110641 | Nov 2020 | US |