EP0187857A1 - Recipient de conservation de l'alcool du souffle - Google Patents

Recipient de conservation de l'alcool du souffle

Info

Publication number
EP0187857A1
EP0187857A1 EP19850903921 EP85903921A EP0187857A1 EP 0187857 A1 EP0187857 A1 EP 0187857A1 EP 19850903921 EP19850903921 EP 19850903921 EP 85903921 A EP85903921 A EP 85903921A EP 0187857 A1 EP0187857 A1 EP 0187857A1
Authority
EP
European Patent Office
Prior art keywords
container
recited
waxed
surface segment
alcohol
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP19850903921
Other languages
German (de)
English (en)
Inventor
Werner Karl Adrian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0187857A1 publication Critical patent/EP0187857A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/98—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving alcohol, e.g. ethanol in breath

Definitions

  • This invention relates generally to equipment for breath analysis, and particularly to storage means for alcohol and other organic substances in breath samples.
  • the ideal storage compound should sorb the alcohol readily, and should retain it until its release is intentionally triggered, at which time it should release the alcohol readily and completely. It should not be too deliquescent, since the presence of moisiure in the breath may cause the material to become caked within the container and thus may clog it.
  • suitable storage compounds are desiccants or dehydrants, they must be dry initially and they must be kept dry, both before and after taking the breath sample. Not only does moisture sorbed by the compounds prior to taking the sample affect their ability to sorb alcohol, but also moisture sorbed after taking the samaple can cause part of the alcohol to be released prematurely. The compounds must therefore be kept in sealed containers.
  • a desireable feature important from an eviden ⁇ tiary viewpoint, is that the container should be provided with some method of identifying the individual giving the sample.
  • Another highly desireable feature is having some means of identifying whether or not any given container has already been used, i.e. whether or not it already contains a sample.
  • ethanol will be used throughout this specification as denoting ethanol and other substances which are to be stored, including other vapours occurring in breath samples, such as acetone, methanol, isopropanol, etc..
  • breath samples such as acetone, methanol, isopropanol, etc.
  • acetone which may be present in the breath of diabetics or dieters.
  • Breath alcohol storage containers in the prior art generally either use indium bags or comprise an alcohol retaining compound held in a container, the container having openings at opposite ends to permit the breath sample to be flowed through it.
  • An example is the container described in United States patent number 4,080,170 granted to Borkenstein on March 21, 1978, which will be discussed in more detail later herein..
  • the containers for the compounds are stored, both before and after taking the sample, in second containers, these second containers being sealable.
  • the compound containers themselves are plugged or capped in some fashion before and after the sample is taken, the plugs or caps being removed at the time of taking the sample.
  • a glass seal has to be broken before taking the sample, and the ends capped afterwards.
  • a certain amount of handling is inevitably required, and care must be taken to ensure that the compound is not exposed to the environment, always containing moisture, for any appreciable length of time. All too frequently, caps come off, leaving the compound exposed to air.
  • the container described in the previously- mentioned Borkenstein patent provides an example.
  • the container consists of a glass tube with openings at each end, the tube containing calcium sulphate as the alcohol- retaining compound.
  • These containers are assembled in a warm oven to ensure that the calcium sulphate is anhydrous, and they are placed in a second container with a screw top.
  • the container is taken out of the second container, the necessary connections are made, and the breath sample is flowed through. After that, the container is disconnected from the system, and is put back into the second container, which is then closed.
  • an improved breath alcohol storage container with openings at opposite ends thereof, and an alcohol-storing compound retained within the container.
  • the alcohol storing compound is mainly l 2 0, and seals extend across the openings at each end of the container, the seals comprising a resilient membrane adapted for non-unsealing penetration by a hypodermic needle.
  • a moisture-sensitive compound which changes color in response to the moisture in a breath sample, thereby indicating when the container has been used.
  • a waxed surface for receiving the thumb or finger print of the individual whose breath is being sampled, along with means for protecting said waxed surface, whereby positive identification of the sample is achieved.
  • Figure 1 is a schematic drawing of a typical breath sampling system
  • Figure 2 is a drawing of the container of the present invention.
  • Figure 3 is an end view of the container of the present invention.
  • Figure 4 is a detailed sectional drawing showing sealing caps on the ends of the container.
  • a conventional breath sampling system is shown schematically.
  • the test subject provides a breath sample by exhaling through the mouthpiece 1 into the breath chamber 2, valve 3 being open and valve 4 being closed.
  • the breath chamber contains a piston ⁇ and overflow openings 7 so that it is the last phase of exhaled breath which is captured.
  • Valve 3 is then closed, valve 4 is opened, and the plunger 5 is pressed, causing the piston 6 to force the breath sample through valve 4, and in the case of the present invention, through a hypodermic needle 30 to the sample storage container 10, air in the sample storage container being expelled through the ventilating hypodermic needle 31.
  • the storage container 10 comprises a glass, plastic, or metal tube 12, with openings at each end. Across each opening, i.e- across the ends of the tube, are sealing caps 15.
  • In the container is a quantity of Al2°3 n granular form, with a grain size of approximately 30 to 50 mesh.
  • the l2°3 is identified in Figure 2 by the reference numeral 13.
  • This aluminum oxide is a known desi ⁇ cant, but nevertheless its particular suitability for this application appears to have been overlooked in the prior art. It has been discovered that it is particularly suitable as a storage compound in the present application. It is not too deliquescent, and thus remains in granular form within the container when exposed to moisture in a breath sample, and does not clog the container. It appears to adsorb the alcohol, as well as such substances as acetone, and releases them readily for analysis.
  • a small quantity of crystals with a coating of cobalt chloride, CoC ⁇ r which responds to the moisture in a breath sample by turning from blue to a shade of pink, thereby indicating whether or not the container has been exposed.
  • This moisture indicating substance is identified in Figure 2 by the reference numeral 14.
  • An indication can alternately be achieved by the use of indicator paper, either shaped to retain the storage compound in the tube (in the manner of the filter paper cups 16 in Figure 2), or in the shape of a longitudinal stripe running alongside the storage compound.
  • the container 10 must of course be transparent or nearly transparent to take advantage of this indicator feature.
  • the aluminum oxide 13 and the moisture indicator 14 are located centrally in the glass tube 12 between porous filter paper cups 16 which are wedged against the wall of the glass tube.
  • the filter paper cups serve to retain the crystals or grains of aluminum oxide and cobalt chloride. They also serve to control the flow of the breath sample through the container, preventing excessive channeling of the breath through the aluminium oxide. Any other finely porous material would be suitable for such retainers.
  • Each sealing cap 15 comprises a silicon rubber membrane 20 with an inward-facing inert lining 21 of Teflon (trademark).
  • the membrane covers the opening at the end of the glass tube.
  • the container is assembled under relatively dry conditions, using dried compounds.
  • the membrane 20 is resilient, and thus can be penetrated by a hypodermic needle without loss of the seal.
  • the teflon lining 21 presents an inert surface to the interior of the container.
  • both hypodermics are removed, and the container remains sealed by virtue of the resilience of the membranes 20 in resealing the needle holes.
  • the test subject i.e. the sample *-*5 donor
  • the test subject is then asked to provide a thumb or finger print to positively identify the sample.
  • the exterior of the glass tube 12 is provided with a lightly waxed segment 35, protected under a peel-back paper strip 36.
  • the waxed segment is rolled along the subject's thumb or finger to t *- ) make the imprint, and then the paper strip 36 is replaced.
  • Adhesive bands 37 secure the edges of the paper strip to the glass tube.
  • the advantages of the sealing caps in the present * ** > invention are several.
  • the storage compound, in this case aluminum oxide remains protected from the environment, not only before and after the flowing through of the sample, but also continuously during the time surrounding the taking of the sample. This provides greater consistency and control over test conditions.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Hematology (AREA)
  • Immunology (AREA)
  • Urology & Nephrology (AREA)
  • Cell Biology (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Un récipient amélioré de conservation d'alcool ou d'autres substances organiques contenues dans des échantillons de souffle comprend un récipient avec des ouvertures à ses deux extrémités et un composé (13) de conservation d'alcool à son intérieur. Dans le mode préféré de réalisation, le composé de conservation d'alcool est surtour du Al2O3, et des fermetures étanches (15) recouvrent les ouvertures à chaque extrémité du récipient, chacune des fermetures étanches comprenant une membrane élastique (20) adaptée pour être pénétrée sans perte d'étanchéité par une aiguille hypodermique (30, 31). Le récipient contient également un composé (14) sensible à l'humidité qui change de couleur en réaction à l'humidité contenue dans un échantillon de souffle, pour indiquer que le récipient a été utilisé. Une surface cirée (35) est formée à l'extérieur du récipient pour recevoir l'impression digitale du pouce ou d'un autre doigt de l'individu dont le souffle est prélevé, de même que des éléments de protection de la surface cirée, ce qui permet d'obtenir une identification positive de l'échantillon.
EP19850903921 1984-07-17 1985-07-17 Recipient de conservation de l'alcool du souffle Withdrawn EP0187857A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63158784A 1984-07-17 1984-07-17
US631587 1984-07-17

Publications (1)

Publication Number Publication Date
EP0187857A1 true EP0187857A1 (fr) 1986-07-23

Family

ID=24531861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850903921 Withdrawn EP0187857A1 (fr) 1984-07-17 1985-07-17 Recipient de conservation de l'alcool du souffle

Country Status (2)

Country Link
EP (1) EP0187857A1 (fr)
WO (1) WO1986000712A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE157456T1 (de) * 1990-01-19 1997-09-15 Mina Ltd Gerät und verfahren zur untersuchung von blut und zur fingerabdruck-identifikation
FI112824B (fi) * 1999-04-08 2004-01-15 Wallac Oy Menetelmä uloshengitetyn kaasun analysoimiseksi

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287823C2 (de) * 1965-03-26 1969-09-18 Lothar Miczka KG, 4370 Mari Prüfröhrchen zur Feststellung des Alkoholgehalts der Atemluf einer Versuchsperson
US3854319A (en) * 1972-10-16 1974-12-17 Borg Warner Alcoholic breath simulator
CH574110A5 (en) * 1975-12-18 1976-03-31 Braissant Guy Breathalyser contg. cartridge of reagent for ethanol - providing simple efficient device for driver's personal use
BE853744A (fr) * 1976-05-20 1977-08-16 Etzlinger Lucien Reactif pour detecter et doser l'ethanol

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8600712A1 *

Also Published As

Publication number Publication date
WO1986000712A1 (fr) 1986-01-30

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