WO2017015721A1 - Dispositif pour recueillir un échantillon et procédé de recueil d'un échantillon - Google Patents

Dispositif pour recueillir un échantillon et procédé de recueil d'un échantillon Download PDF

Info

Publication number
WO2017015721A1
WO2017015721A1 PCT/AU2016/050683 AU2016050683W WO2017015721A1 WO 2017015721 A1 WO2017015721 A1 WO 2017015721A1 AU 2016050683 W AU2016050683 W AU 2016050683W WO 2017015721 A1 WO2017015721 A1 WO 2017015721A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
sample
collecting
washing
unit
Prior art date
Application number
PCT/AU2016/050683
Other languages
English (en)
Inventor
Michael John Smith
Graham William LYFORD
Margaret Sally-Anne WATSON
Leigh Michael Ryan
Original Assignee
Greyscan Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2015903017A external-priority patent/AU2015903017A0/en
Application filed by Greyscan Pty Ltd filed Critical Greyscan Pty Ltd
Publication of WO2017015721A1 publication Critical patent/WO2017015721A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N2001/022—Devices for withdrawing samples sampling for security purposes, e.g. contraband, warfare agents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N2001/028—Sampling from a surface, swabbing, vaporising

Definitions

  • the invention relates to a device for collecting a sample and to a method of collecting a sample. More particularly, but not exclusively, the invention relates to a device for collecting a sample for security testing for traces of explosives, for example on the clothes and/or hand luggage of passengers arriving for travel at an airport.
  • Examples of the present invention seek to provide an improved device for collecting a sample for detection of traces of explosives which overcomes or at least alleviates disadvantages associated with existing systems, such as the sensitivity and pickup efficiency from fabrics.
  • a device for collecting a sample for an explosive trace detector wherein the device includes a roller unit having a handle configured to enable a user to move the roller unit across a sample surface, the roller unit including a roller support carried by the handle, and a roller which is rotationally coupled to the roller support to rotate relative to the handle, wherein the roller unit is arranged such that the roller rolls along the sample surface as the roller unit is moved across the sample surface by the handle, the roller being tacky to facilitate adherence of sample material (or target material) from the sample surface to the roller during rolling along the sample surface.
  • the roller is formed of a silicone material.
  • the roller is a composite blend of TPE (Thermoplastic elastomer) and Polydimethylsiloxanes (Silicon oil).
  • TPE Thermoplastic elastomer
  • Silicon oil Polydimethylsiloxanes
  • the roller is cylindrical to provide continuous contact over a large sample area.
  • the roller support includes a first pivot to pivotally support one end of the roller and a second pivot to pivotally support a second end of the roller opposite to the first end.
  • the silicone material retains its tackiness after washing in water and drying.
  • the device includes a washing station for washing sample material from the roller into a sample solution for testing by a test unit.
  • the washing station is in the form of a cradle to which the roller unit is docked, and the cradle has a cavity shaped to house the roller so as to support the roller unit in position when docked.
  • the cavity is adapted to hold water to wash the roller and the cradle is arranged to support the roller to allow the roller to be rotated through the water held in the cavity.
  • the cradle includes a scraper edge which extends across a width of the roller when the roller unit is docked at the washing station so as to assist in collecting sample material from the roller into the sample solution by scraping a perimeter surface of the roller as the roller is rotated against the scraper edge. This collects the sample fluid efficiently and minimises residual fluid overflow. This could be done in a number of ways such as:
  • the washing station includes a conduit for supply of water to and/or from the cavity.
  • the roller includes a coupling at an end thereof for connection to a driving tool for transmitting rotational drive from the driving tool to the roller to drive rotation of the roller against the scraper edge.
  • the step of washing the roller is performed by using a washing station as described above. Eluting (removal of sample) should be done with an elution solution.
  • Cleaning/washing may be done with a cleaning solution.
  • the cleaning solution may be warm water, Isopropyl Alcohol (IPA) or a different solution.
  • IPA Isopropyl Alcohol
  • the elution station and cleaning station could be done in the same bath or station or separate baths or stations.
  • the step of washing the roller is performed with a solution of water.
  • the testing of the sample solution includes testing for traces of inorganic explosive material. More preferably, the testing of the sample solution includes testing for nitrate, chlorate and/or perchlorate traces.
  • Figure 1 is a perspective top view of a device for collecting a sample in accordance with an example of the present invention, including both a roller unit and a washing station;
  • Figure 2 shows a top perspective view of the washing station;
  • Figure 3 shows a front perspective view of the roller unit shown atop the washing station
  • Figure 4 shows a side perspective view of the roller unit shown atop the washing station
  • Figure 5 shows a perspective view of the washing station including a fluid supply conduit
  • Figure 6 shows a perspective view of the roller unit shown docked at the washing station
  • Figure 7 shows a side perspective view of the roller unit being rolled across a sample surface
  • Figure 8 shows test results demonstrating effectiveness of sample collection of the roller unit in comparison to a swab.
  • a device 10 for collecting a sample for an explosive trace detector there is shown a device 10 for collecting a sample for an explosive trace detector.
  • a tacky roller facilitates an efficient uptake of sample material without damage to clothes, luggage and other items worn on the person of a passenger at an airport.
  • the device 10 is efficient, simple and neat to use, and also may include a washing station to improve the process of gathering the sample material into a form which can be used by the explosive trace detector.
  • a device 10 for collecting a sample for an explosive trace detector wherein the device 10 includes a roller unit 12 having a handle 14 configured to enable a user to move the roller unit 12 across a sample surface 16.
  • the roller unit 12 includes a roller support 18 carried by the handle 14, and a roller 20 which is rotationally coupled to the roller support 18 to rotate relative to the handle 14.
  • the roller unit 12 is arranged such that the roller 20 rolls along the sample surface 16 as the roller unit 12 is moved across the sample surface 16 by the handle 14.
  • the roller 20 is tacky when dry to facilitate adherence of sample material from the sample surface 16 to the roller 20 during rolling along the sample surface 16.
  • the roller 20 is formed of a silicone material (see material description page 2) and is cylindrical, with a circular, cross-sectional shape.
  • the roller support 18 includes a first pivot 22 to pivotally support one end of the roller 20 and a second pivot 24 to pivotally support a second end of the roller 20 opposite to the first end.
  • the roller support 18 effectively has a forked arrangement to provide the first pivot 22 and the second pivot 24 so as to support the roller 20 between the first pivot 22 and the second pivot 24 in an arrangement wherein the roller 20 is free to rotate relative to the roller support 18 and the handle 14.
  • the roller support 18 and the handle 14 may be formed integrally as a unitary part.
  • the rolling surface of the roller 20 is formed of tacky silicone material
  • that silicone material may be formed as a sleeve which fits over a core formed of plastic, with the plastic core protruding at both ends of the sleeve and forming stub axles at either end for mounting in the first pivot 22 and the second pivot 24 of the roller support 18.
  • the silicone material may be chosen to retain and/or restore its tackiness when washed in water and dried. Conveniently, in the event that a negative reading is obtained for a particular passenger, this would enable the roller unit 12 to then be washed and to be re-used so that, potentially, a single roller unit 12 may be used until either a positive result is recorded or the roller 20 finally loses its tackiness. Tackiness disappears when wet or clogged with particles; a wash/dry cycle is required to restore tackiness. Roller tackiness life is expected to exceed likelihood of positive sample result (400+ uses have been validated so far).
  • the device 10 includes a washing station 26 for washing sample material from the roller 20 into a sample solution for testing by a test unit.
  • the washing station 26 is in the form of a cradle 28 to which the roller unit 12 is docked (see Figure 6), and the cradle 28 has a cavity 30 shaped to house the roller 20 so as to support the roller unit 12 in position when docked.
  • the cavity 30 may be shaped to maximise the exposure of the roller 20 along its length while minimising the fluid volume.
  • the cavity 30 may be adapted to hold water to wash the roller 20 and the cradle 28 may be arranged to support the roller 20 to allow the roller 20 to be rotated through the water held in the cavity 30 so as to facilitate washing of the sample material from the roller 20 into a liquid form to be tested by the test unit.
  • the cradle 28 may include a scraper edge 34 (see notes page 3 regarding scraper edge) which extends across a width of the roller 20 when the roller unit 12 is docked at the washing station 26 so as to assist in washing sample material from the roller 20 into the sample solution by scaping a perimeter surface of the roller 20 as the roller 20 is rotated against the scraper edge 34.
  • the scraper edge 34 may be in the form of a relatively thin insert mounted as a substantially vertical screen in a floor surface of the cradle 28.
  • the scraper edge 34 may be mounted to be parallel to an axis of the roller 20 when the roller unit 12 is docked at the washing station 26.
  • the scraper edge 34 may be mounted to the cradle at a location which is raised upwardly from a lowest point of the floor surface of the cavity 30.
  • the washing station 26 may include a conduit 36 for supply of water to and/or from the cavity 30.
  • the conduit 36 may be fitted to a nipple which is integrally formed in the washing station 26, with the nipple having an opening which extends through a side wall of the washing station 26 to be in fluid communication with the interior of the cavity 30.
  • the lowest portion of the floor surface of the cavity 30 may have an indented drain which extends longitudinally of the cylindrical cavity 30.
  • the cavity is removed and replaced with a clean one. This is only required removed on positive samples (or at a determined life cycle ie x number of uses/cycles, or when clogged after multiple uses) as the cavity is then contaminated.
  • the conduit 36 may facilitate efficient and neat collection of the sample solution from the washing station 26 during washing of the roller 20, as shown in Figure 6. Washing may be achieved by rotating the roller 20 through a bath of water which is then collected, for example by suction, through the conduit 36. To facilitate washing of the roller 20, the roller 20 may be driven in rotation as shown in Figure 6. This may be achieved by providing the roller 20 with a coupling 38 at one or both ends thereof for connection to a driving tool 40 for transmitting rotational drive from the driving tool 40 to the roller 20 to drive rotation of the roller 20 against the scraper edge 34. It will be appreciated that the step of washing the roller 20 in the washing station
  • 26 may be performed by using de-ionized water, possibly in combination with an elution agent.
  • washing may be performed with a mixture of de-ionized water and ferric sulphate.
  • Figure 7 shows the roller unit 12 being used in laboratory conditions to remove sample material from a sample surface 16 and Figure 8 shows the results of tests conducted by the applicant in comparing uptake of the roller unit 12 compared to a swab uptake.
  • the uptake of the roller unit 12 is shown at the upper graph indicated with reference numeral 42 and the results of the swab uptake are shown at the lower graph indicated by reference numeral 44.
  • the left-hand result that is, the left-hand "bump" in the graph
  • the central result shows a level detected of Chlorate
  • the right-hand result shows a level detected of Perchlorate.
  • the uptake using the roller unit 12 is significantly higher for Nitrate, Chlorate and Perchlorate when compared to the swab uptake.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif pour recueillir un échantillon destiné à un détecteur de trace d'explosif, le dispositif comprenant une unité de rouleau comportant une poignée conçue pour permettre à un utilisateur de déplacer l'unité de rouleau à travers une surface d'échantillon, l'unité de rouleau comprenant un support de rouleau porté par la poignée, et un rouleau qui est couplé en rotation au support de rouleau pour tourner par rapport à la poignée, l'unité de rouleau étant disposée de telle sorte que le rouleau roule le long de la surface d'échantillon à mesure que l'unité de rouleau est déplacée à travers la surface d'échantillon par la poignée, le rouleau étant collant pour faciliter l'adhérence du matériau échantillon de la surface d'échantillon vers le rouleau pendant le roulement le long de la surface d'échantillon.
PCT/AU2016/050683 2015-07-29 2016-07-29 Dispositif pour recueillir un échantillon et procédé de recueil d'un échantillon WO2017015721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2015903017A AU2015903017A0 (en) 2015-07-29 Device for collecting a sample and method of collecting a sample
AU2015903017 2015-07-29

Publications (1)

Publication Number Publication Date
WO2017015721A1 true WO2017015721A1 (fr) 2017-02-02

Family

ID=57883839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2016/050683 WO2017015721A1 (fr) 2015-07-29 2016-07-29 Dispositif pour recueillir un échantillon et procédé de recueil d'un échantillon

Country Status (1)

Country Link
WO (1) WO2017015721A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068951A (en) * 1990-05-31 1991-12-03 The United State Of America As Represented By The Administrator, National & Space Administration Device for applying constant pressure to a surface
US5626158A (en) * 1993-11-24 1997-05-06 Gratopp; Merlin Paint roller washer and dryer
US5648047A (en) * 1996-03-29 1997-07-15 Kardish; Nitza Device for colorimetric detection of explosives and narcotics
EP1022554A1 (fr) * 1999-01-20 2000-07-26 Universität Bern Institut für Rechtsmedizin (IRM) Appareil à détection des substances et des traces chimiques, aussi bien que la méthode de détection
US20010029793A1 (en) * 1999-03-10 2001-10-18 Mesosystems Technology, Inc. Biological individual sampler
EP2583627A1 (fr) * 2011-10-21 2013-04-24 Vibod GmbH Dispositif de collecte légale

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068951A (en) * 1990-05-31 1991-12-03 The United State Of America As Represented By The Administrator, National & Space Administration Device for applying constant pressure to a surface
US5626158A (en) * 1993-11-24 1997-05-06 Gratopp; Merlin Paint roller washer and dryer
US5648047A (en) * 1996-03-29 1997-07-15 Kardish; Nitza Device for colorimetric detection of explosives and narcotics
EP1022554A1 (fr) * 1999-01-20 2000-07-26 Universität Bern Institut für Rechtsmedizin (IRM) Appareil à détection des substances et des traces chimiques, aussi bien que la méthode de détection
US20010029793A1 (en) * 1999-03-10 2001-10-18 Mesosystems Technology, Inc. Biological individual sampler
EP2583627A1 (fr) * 2011-10-21 2013-04-24 Vibod GmbH Dispositif de collecte légale

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