US20120120385A1 - Pathogen detection by simultaneous size/fluorescence measurement - Google Patents

Pathogen detection by simultaneous size/fluorescence measurement Download PDF

Info

Publication number
US20120120385A1
US20120120385A1 US11/768,103 US76810307A US2012120385A1 US 20120120385 A1 US20120120385 A1 US 20120120385A1 US 76810307 A US76810307 A US 76810307A US 2012120385 A1 US2012120385 A1 US 2012120385A1
Authority
US
United States
Prior art keywords
particle
size
fluorescence
light
volume
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.)
Abandoned
Application number
US11/768,103
Other languages
English (en)
Inventor
Jian-Ping Jiang
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.)
Biovigilant Systems Inc
Original Assignee
Biovigilant Systems Inc
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 to KR1020097001626A priority Critical patent/KR101418295B1/ko
Application filed by Biovigilant Systems Inc filed Critical Biovigilant Systems Inc
Priority to JP2009518496A priority patent/JP5388846B2/ja
Priority to CN2007800246669A priority patent/CN101479592B/zh
Priority to EP07873727A priority patent/EP2041550A4/en
Priority to PCT/US2007/072050 priority patent/WO2008105893A2/en
Priority to US11/768,103 priority patent/US20120120385A1/en
Assigned to BIOVIGILANT SYSTEMS, INC. reassignment BIOVIGILANT SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JIANG, JIAN-PING
Assigned to BIOVIGILANT SYSTEMS, INC. reassignment BIOVIGILANT SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MORRELL, MICHAEL, MORRIS, GREGORY SCOTT
Assigned to YAMATAKE CORPORATION reassignment YAMATAKE CORPORATION SECURITY AGREEMENT Assignors: BIOVIGILANT SYSTEMS, INC.
Priority to HK10100213.9A priority patent/HK1132797A1/xx
Publication of US20120120385A1 publication Critical patent/US20120120385A1/en
Priority to US13/584,685 priority patent/US8647860B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
    • C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N15/1456—Optical investigation techniques, e.g. flow cytometry without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/51—Scattering, i.e. diffuse reflection within a body or fluid inside a container, e.g. in an ampoule
    • 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
    • G01N33/483—Physical analysis of biological material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/01—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials specially adapted for biological cells, e.g. blood cells
    • G01N2015/019—Biological contaminants; Fouling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N2015/1493—Particle size
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4704—Angular selective
    • G01N2021/4707—Forward scatter; Low angle scatter

Definitions

  • the present invention relates generally to a system and method for detecting airborne or waterborne particles, and more particularly to a system and method for detecting airborne or waterborne particles and classifying the detected particles.
  • the invention has particular utility in detecting and classifying allergens and biological warfare agents and will be described in connection with such utility, although other utilities are contemplated.
  • An urban terrorist attack involving release of biological warfare agents such as bacillus anthracis (anthrax) is presently a realistic concern.
  • Weaponized anthrax spores are extremely dangerous because they can gain passage into the human lungs.
  • a lethal inhalation dose of anthrax spores for humans, LD 50 lethal dose sufficient to kill 50% of the persons exposed is estimated to be 2,500 to 50,000 spores (see T. V. Inglesby, et al., “Anthrax as a Biological Weapon”, JAMA, vol. 281, page 1735, 1999).
  • Some other potential weaponized bio-agents are yersinia pestis (plague), clostridium botulinum (botulism), and francisella tularensis.
  • yersinia pestis plaque
  • botulism clostridium botulinum
  • francisella tularensis francisella tularensis.
  • a real time detector of environmental microbial level is useful for public health, quality control and regulatory purposes.
  • parenteral drug manufacturers are required to monitor the microbial levels in their aseptic clean rooms.
  • an instrument which can detect microbes in the environment instantaneously will be a useful tool and have advantages over conventional nutrient plate culture methods which requires days for microbes to grow and to be detected.
  • Particle size measurement and ultraviolet (UV) induced fluorescence detection have been used to detect the presence of biological substances in the air.
  • UV ultraviolet
  • these devices are Biological Agent Warning Sensor (BAWS) developed by MIT Lincoln Laboratory, fluorescence biological particle detection system of Ho (Jim yew-Wah Ho, U.S. Pat. Nos. 5,701,012; 5,895,922; 6,831,279); FLAPS and UV-APS by TSI of Minnesota (Peter P. Hairston; and Frederick R. Quant; U.S. Pat. No. 5,999,250), and a fluorescence sensor by Silcott (U.S. Pat. No. 6,885,440).
  • BAWS Biological Agent Warning Sensor
  • a proposed bio-sensor based on laser-induced fluorescence using a pulsed UV laser is described by T. H. Jeys, et al., Proc. IRIS Active Systems, vol. 1, p. 235, 1998. This is capable of detecting an aerosol concentration of five particles per liter of air, but involves expensive and delicate instruments. Other particle counters are manufactured by Met One Instrument, Inc, of Grants Pass, Oreg., Particle Measurement Systems, Inc., of Boulder, Colo., and Terra Universal Corp., of Anaheim, Calif.
  • the present invention provides a sensor system which is capable of simultaneously measuring particle size and detecting the presence of intrinsic fluorescence from metabolites and other bio-molecules, on a particle-by-particle basis.
  • the advantages of this detection scheme over the prior art are several. For one it provides a deterministic particle measurement methodology for characterizing particles rather than relying on statistical models employed in prior art for particle characterization. The deterministic measurement methodology enables more definitive assignment of particle characters than the prior art and less reliance on statistical models.
  • the current invention comprises three main components: (1) a first optical system for measuring an individual particle size; (2) a second optical system to detect a UV laser-induced intrinsic fluorescence signal from an individual particle; and (3) a data recording format for assigning both particle size and fluorescence intensity to an individual particle, and computer readable program code for differentiating microbes from non-microbes (e.g. inert dust particles).
  • the optical assembly of the present invention has two optical sub-assemblies: (a) an optical setup to measure the particle size.
  • the preferred embodiment of the current invention uses the well-known and often used Mie scattering detection scheme, but applies it in a novel way, enabling the system to make highly accurate measurements of airborne particles with size ranges from 0.5 microns to 20 microns. This capability to make fine distinctions in size is important in order to determine the class of microbe, because different classes of microbes have different size ranges; (b) simultaneous to the particle size measurement, an optical apparatus is used to measure the fluorescence level from the particle being interrogated.
  • the preferred embodiment of the current invention uses an elliptical mirror which is positioned to collected fluorescence emission from the same particle as it is being measured for size.
  • FIG. 1 is a plot showing particle size ranges of several airborne inert and microbial particulates
  • FIG. 2( a ) is a histogram representation of simultaneous measurements of particle size and fluorescence showing particle distribution for microbe-free air;
  • FIG. 2( b ) is a histogram showing simultaneous measurements of particle size and fluorescence for air containing Baker's yeast powder
  • FIG. 3 is a histogram representation of simultaneous measurements of 7 micron size fluorescent dye doped particles and fluorescence
  • FIG. 4 is a schematic diagram of an optical system in accordance with the present invention, for performing simultaneous measurements of particle size and fluorescence;
  • FIG. 5 is a block diagram of the optical system of FIG. 4 .
  • FIG. 4 is a schematic representation of an optical system for a fluid particle detector system according to a first exemplary embodiment of the invention.
  • This first exemplary embodiment of the system is designed, for example to detect airborne or waterborne bio-terrorist agents deliberately released by terrorists or others, but also may be used in civilian applications to detect harmful levels of other airborne or waterborne particles which may exist naturally such as mold or bacteria, or which may have been accidentally, inadvertently, naturally, or deliberately related, or for other industrial applications such as the food and pharmaceutical manufacturing industries, as well as clean room applications.
  • fluid borne particles means both airborne particles and waterborne particles.
  • pathogen refers to any airborne or waterborne particles, biological agent, or toxin, which could potentially harm or even kill humans exposed to such particles if present in the air or water in sufficient quantities.
  • biological agent is defined as any microorganism, pathogen, or infectious substance, toxin, biological toxin, or any naturally occurring, bioengineered or synthesized component of any such micro-organism, pathogen, or infectious substance, whatever its origin or method of production.
  • biological agents include, for example, biological toxins, bacteria, viruses, rickettsiae, spores, fungi, and protozoa, as well as others known in the art.
  • Bio toxins are poisonous substances produced or derived from living plants, animals or microorganisms, but also can be produced or altered by chemical means.
  • a toxin generally develops naturally in a host organism (i.e., saxitoxin is produced by marine algae), but genetically altered and/or synthetically manufactured toxins have been produced in a laboratory environment.
  • toxins Compared with microorganisms, toxins have a relatively simple biochemical composition and are not able to reproduce themselves. In many aspects, they are comparable to chemical agents.
  • Such biological toxins are, for example, botulinum and tetanus toxins, staphylococcal enterotoxin B, tricothocene mycotoxins, ricin, saxitoxin, Shiga and Shiga-like toxins, dendrotoxins, erabutoxin b, as well as other known toxins.
  • the detector system of the present invention is designed to detect airborne or waterborne particles and produce outputs indicating, for instance, the number of particles of each size within the range, which is detected in a sample, and indicate whether the particles are biologic or non-biologic.
  • the system also may produce an alarm signal or other response if the number of particles exceeds a predetermined value above a normal background level, and/or biological organisms or biological agents and potentially dangerous.
  • FIG. 4 is a representation of system 10 for a fluid particle detector system according to an exemplary embodiment of the invention.
  • the system 10 includes an UV light excitation source 12 such as a laser providing a beam of electromagnetic radiation 14 have an UV light source wavelength.
  • the UV light source is selected to have a wavelength capable of exciting intrinsic fluorescence from metabolites inside microbes.
  • the excitation source 12 preferably operates in a wavelength of about 270 nm to about 410 nm, preferably about 350 nm to about 410 nm.
  • a wavelength of about 270 nm to about 410 nm is chosen based on the premise that microbes comprise three primary metabolites: tryptophan, which normally fluoresces at about 270 nm with a range of about 220 nm-about 300 nm; nicotinamide adenine dinucleotide (NADH) which normally fluoresces at about 340 nm (range about 320 nm-about 420 nm); and riboflavin which normally fluoresces at about 400 nm (range about 320 nm-about 420 nm).
  • the excitation source 12 has a wavelength of about 350 to about 410 nm.
  • This wavelength ensures excitation of two of the three aforesaid primary metabolites, NADH, and riboflavin in bio-agents, but excludes excitation of interferences such as from diesel engine exhaust and other inert particles such as dust or baby powder.
  • the present invention makes a judicial selection of wavelength range of the excitation source 12 , which retains the ability of exciting fluorescence from NADH and riboflavin (foregoing the ability to excite tryptophan) while excluding the excitation of interferents such as diesel engine exhaust. This step is taken to reduce false alarms generated by diesel exhaust (which can be excited by short UV wavelengths such as 266 nm light.
  • Mie scattering particle-size detector 20 includes a beam blocker lens 22 , a collimator lens 24 and a condenser lens 26 for focusing a portion of the light beam 14 onto a particle detector 28 .
  • an elliptical mirror 30 is placed at the particle-sampling region in such a way that the intersection of the incoming particle stream and the laser beam is at one of the two foci of the ellipsoid, while a fluorescence detector 32 (in this case a photo-multiplier tube) occupies the other focus.
  • a fluorescence detector 32 in this case a photo-multiplier tube
  • This design utilizes the fact that a point source of light emanating from one of the two foci of an ellipsoid will be focused onto the other.
  • the elliptical mirror 30 concentrates the fluorescence signal from microbe and focus it onto the fluorescence detector 32 .
  • An optical filter 34 is placed in front of the fluorescence detector to block the scattered UV light and pass the induced fluorescence.
  • the beam blocker lens 22 is designed to reflect non-scattered elements of the laser beam 14 , and may have a material, such as vinyl, attached a front surface to reflect the non-scattered elements of the beam of electromagnetic radiation.
  • a material such as vinyl
  • Other features and considerations for the beam blocker lens 22 are disclosed in some of the earlier U.S. patents to Hamburger et al. listed above, and in PCT Application Serial No. PCT/US2006027638, incorporated herein by reference.
  • the particle detector 20 may comprise, for example, a photodiode for sizing the particles, e.g. as described in the earlier U.S. patent to Hamburger et al., listed above, and incorporated herein by reference.
  • the present invention's use of Mie scattering also facilitates the placement of optical components for the detection of UV light illumination to concurrently examine individual particles for the presence of the metabolites NADH, riboflavin and other bio-molecules, which are necessary intermediates for metabolism of living organisms, and therefore exist in microbes such as bacteria and fungi. If these chemical compounds exist in a bio-aerosol, they are excited by the UV photon energy and subsequently emit auto-fluorescence light which may be detected by an instrument based on the detection scheme outlined above.
  • this detection scheme is not capable of identifying the genus or species of microbes, and viruses may be too small and lack the metabolism for detection, this detection scheme's ability to simultaneously and for each particle determine the size of the particle and if it is biologic or inert indicates to the user the presence or absence of microbial contamination.
  • an instrument continuously monitors the environmental air (or liquid) to measure the size of each individual airborne particle in real time and to concurrently determine whether that particle emits fluorescence or not.
  • a threshold is set for the fluorescence signal. If the fluorescence signal is below the set level, the particle is marked inert.
  • This fluorescence signal threshold can be fluorescence signal intensity, fluorescence intensity as a function of particle cross-sectional area or a function of particle volume. If the fluorescence signal threshold exceeds the set level, the particle is marked biological.
  • FIGS. 2( a ) and 2 ( b ) illustrate the functionality of a detector in accordance with the present invention. They show the environmental airborne particle data measured by using this detection scheme. In each graph, the upper part depicts in logarithmic scale the particle size histogram of particle concentration (#/liter of air) versus particle size (from 1 micron to 13 microns); solid bars represent inert particles whereas striped bars indicate the presence of microbes.
  • the lower part of the graph is a real-time snap shot of the particles detected within 1 second: each spike represents one single particle and its height corresponds to the particle size.
  • FIG. 3 shows the data set obtained when 7 microns fluorescent dye doped plastic beads were disseminated into a detector capable of simultaneous particle size and fluorescence measurement scheme.
  • the striped bars show the presence of fluorescence in those particles with a distribution in the 7 microns size range.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Biomedical Technology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dispersion Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Urology & Nephrology (AREA)
  • Hematology (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
US11/768,103 2006-06-27 2007-06-25 Pathogen detection by simultaneous size/fluorescence measurement Abandoned US20120120385A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US11/768,103 US20120120385A1 (en) 2006-06-27 2007-06-25 Pathogen detection by simultaneous size/fluorescence measurement
JP2009518496A JP5388846B2 (ja) 2006-06-27 2007-06-25 粒度および蛍光の同時測定による病原体検出
CN2007800246669A CN101479592B (zh) 2006-06-27 2007-06-25 通过同时尺寸/荧光测量来进行病原体检测
EP07873727A EP2041550A4 (en) 2006-06-27 2007-06-25 IDENTIFICATION OF DISEASES THROUGH SIMULTANEOUS SIZE AND FLUORESCENT MEASUREMENT
PCT/US2007/072050 WO2008105893A2 (en) 2006-06-27 2007-06-25 Pathogen detection by simultaneous size/fluorescence measurement
KR1020097001626A KR101418295B1 (ko) 2006-06-27 2007-06-25 크기/형광의 동시적 측정에 의한 병원체 검출
HK10100213.9A HK1132797A1 (en) 2006-06-27 2010-01-08 Pathogen detection by simultaneous size/fluorescence measurement
US13/584,685 US8647860B2 (en) 2006-06-27 2012-08-13 Pathogen detection by simultaneous size/fluorescence measurement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80596206P 2006-06-27 2006-06-27
US11/768,103 US20120120385A1 (en) 2006-06-27 2007-06-25 Pathogen detection by simultaneous size/fluorescence measurement

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/584,685 Division US8647860B2 (en) 2006-06-27 2012-08-13 Pathogen detection by simultaneous size/fluorescence measurement

Publications (1)

Publication Number Publication Date
US20120120385A1 true US20120120385A1 (en) 2012-05-17

Family

ID=39721740

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/768,103 Abandoned US20120120385A1 (en) 2006-06-27 2007-06-25 Pathogen detection by simultaneous size/fluorescence measurement
US13/584,685 Active 2027-07-13 US8647860B2 (en) 2006-06-27 2012-08-13 Pathogen detection by simultaneous size/fluorescence measurement

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/584,685 Active 2027-07-13 US8647860B2 (en) 2006-06-27 2012-08-13 Pathogen detection by simultaneous size/fluorescence measurement

Country Status (6)

Country Link
US (2) US20120120385A1 (ko)
EP (1) EP2041550A4 (ko)
JP (1) JP5388846B2 (ko)
KR (1) KR101418295B1 (ko)
HK (1) HK1132797A1 (ko)
WO (1) WO2008105893A2 (ko)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090242799A1 (en) * 2007-12-03 2009-10-01 Bolotin Charles E Method for the detection of biologic particle contamination
US20140014855A1 (en) * 2012-07-12 2014-01-16 KAIST (Korea Advanced Institute of Science and Technology) Condensing-type portable fluorescence detection system
US20140140890A1 (en) * 2011-05-13 2014-05-22 Hitachi High-Technologies Corporation Automatic analysis device
US9134230B2 (en) 2011-04-06 2015-09-15 Instant Bioscan, Llc Microbial detection apparatus and method
US20150346091A1 (en) * 2014-05-30 2015-12-03 Azbil Corporation Device for detecting particles in a liquid and method for detecting particles in a liquid
US10006850B2 (en) * 2014-05-28 2018-06-26 Azbil Corporation Particle detecting device
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
WO2019147590A1 (en) * 2018-01-23 2019-08-01 Cbrn International , Ltd. Bioaerosol particle detector
US20220224845A1 (en) * 2019-10-09 2022-07-14 Panasonic Intellectual Property Management Co., Ltd. Imaging device

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8748122B2 (en) 2008-12-16 2014-06-10 BIO MéRIEUX, INC. Methods for the characterization of microorganisms on solid or semi-solid media
JP5667079B2 (ja) * 2008-12-18 2015-02-12 アズビル株式会社 粒径及び蛍光の同時検出のための小型検出器
US20100291618A1 (en) 2009-05-15 2010-11-18 Biomerieux, Inc. Methods for rapid identification and/or characterization of a microbial agent in a sample
WO2010132829A2 (en) 2009-05-15 2010-11-18 Biomerieux, Inc Combined detection instrument for culture specimen containers and instrument for identification and/or characterization of a microbial agent in a sample
CN102639986A (zh) * 2009-08-27 2012-08-15 夏普株式会社 显示控制装置
FI20105645A0 (fi) * 2010-06-07 2010-06-07 Environics Oy Laite ja menetelmä biologisen materiaalin havaitsemiseksi
KR20120071453A (ko) * 2010-12-23 2012-07-03 삼성전자주식회사 미생물 검출장치
JP5591747B2 (ja) 2011-03-30 2014-09-17 株式会社日立製作所 発光計測装置及び微生物計数装置
JP2012217382A (ja) * 2011-04-08 2012-11-12 Fuji Electric Co Ltd 微生物検出装置
JP2013169196A (ja) * 2012-02-22 2013-09-02 Sharp Corp 検出装置および検出方法
JP6316574B2 (ja) * 2013-11-21 2018-04-25 アズビル株式会社 粒子検出装置及び粒子の検出方法
JP6425918B2 (ja) * 2014-05-27 2018-11-21 アズビル株式会社 精製水製造装置の監視システム及び精製水製造装置の監視方法
EP3168604B1 (en) 2015-11-10 2021-12-01 LG Electronics Inc. Device for measuring floating micro-organisms
US10895532B2 (en) 2016-12-21 2021-01-19 Lg Electronics Inc. Airborne microorganism measurement device and air conditioning device including the same
EP3840786A4 (en) * 2018-08-20 2022-03-09 Billy W. Williams PROTECTIVE BARRIER FOR STERILIZATION VESSELS
KR102225665B1 (ko) * 2019-10-10 2021-03-10 국방과학연구소 생물입자 탐지방법

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497690A (en) * 1967-09-21 1970-02-24 Bausch & Lomb Method and apparatus for classifying biological cells by measuring the size and fluorescent response thereof
US3850525A (en) 1973-07-09 1974-11-26 Beckman Instruments Inc Simultaneous multiple measurements in laser photometers
US4071298A (en) 1974-06-27 1978-01-31 Stanford Research Institute Laser Raman/fluorescent device for analyzing airborne particles
JPS63259442A (ja) * 1987-04-15 1988-10-26 Omron Tateisi Electronics Co 細胞分析装置
US5123731A (en) * 1988-02-01 1992-06-23 Canon Kabushiki Kaisha Particle measuring device
US5203339A (en) 1991-06-28 1993-04-20 The Government Of The United States Of America As Represented By The Secretary Of The Department Health And Human Services Method and apparatus for imaging a physical parameter in turbid media using diffuse waves
US5290707A (en) 1991-11-25 1994-03-01 The United States Of America As Represented By The Secretary Of The Army Method for detection of microorganisms
US6509192B1 (en) 1992-02-24 2003-01-21 Coulter International Corp. Quality control method
DE69334181T2 (de) * 1993-09-27 2008-08-21 Venturedyne, Ltd., Milwaukee Verbesserter partikelsensor und vorrichtung zum nachweis eines teilchens
US5540494A (en) * 1994-06-03 1996-07-30 Purvis, Jr.; Norman B. Method and apparatus for determining absolute particle size, surface area and volume normalized fluorescence using forward angle light scatter intensity in flow cytometry
US5895922A (en) 1996-03-19 1999-04-20 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Fluorescent biological particle detection system
US5701012A (en) 1996-03-19 1997-12-23 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Fluorescent biological particle detection system
US5646597A (en) 1996-07-11 1997-07-08 Robert N. Hamburger Allergen detector system and method
US6087947A (en) 1996-07-11 2000-07-11 Robert N. Hamburger Allergen detector system and method
CA2284870C (en) 1997-03-17 2003-11-25 Tsi Incorporated System for detecting fluorescing components in aerosols
US5986555A (en) 1997-10-07 1999-11-16 Robert N. Hamburger Allergen detector system and method
US5969622A (en) 1997-10-07 1999-10-19 Robert N. Hamburger Allergen detector system and method
JP3946444B2 (ja) * 1998-05-14 2007-07-18 ルミネックス コーポレイション フローサイトメータのデッドタイムをゼロにする構成および方法
JP4215397B2 (ja) 1998-05-14 2009-01-28 ルミネックス コーポレイション 多重分析物診断システム
JP4477173B2 (ja) * 1998-09-30 2010-06-09 シスメックス株式会社 微生物測定方法及び装置
US6067157A (en) 1998-10-09 2000-05-23 University Of Washington Dual large angle light scattering detection
US7126687B2 (en) 1999-08-09 2006-10-24 The United States Of America As Represented By The Secretary Of The Army Method and instrumentation for determining absorption and morphology of individual airborne particles
AU2001276867A1 (en) * 2000-07-11 2002-01-21 Sri International Encoding methods using up-converting phosphors for high-throughput screening of catalysts
US6787104B1 (en) 2000-09-14 2004-09-07 The Regents Of The University Of California Detection and treatment of chemical weapons and/or biological pathogens
WO2003106965A2 (en) * 2001-01-10 2003-12-24 S3I L.L.C. System and method for detecting and classifying biological particles
JP2003038163A (ja) * 2001-07-26 2003-02-12 Yamato Seisakusho:Kk 微生物検出装置
US6831279B2 (en) 2001-11-27 2004-12-14 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Laser diode-excited biological particle detection system
US7441703B2 (en) * 2002-08-20 2008-10-28 Illumina, Inc. Optical reader for diffraction grating-based encoded optical identification elements
US7122384B2 (en) * 2002-11-06 2006-10-17 E. I. Du Pont De Nemours And Company Resonant light scattering microparticle methods
US7053783B2 (en) 2002-12-18 2006-05-30 Biovigilant Systems, Inc. Pathogen detector system and method
US6936828B2 (en) * 2003-02-14 2005-08-30 Honeywell International Inc. Particle detection system and method
CA2524345C (en) * 2003-04-29 2014-04-08 S3I, Llc A multi-spectral optical method and system for detecting and classifying biological and non-biological particles
EP1676122A2 (en) 2003-09-30 2006-07-05 Singulex, Inc. Methods for enhancing the analysis of particle detection
JP2005102645A (ja) * 2003-10-01 2005-04-21 Sysmex Corp 微生物の殺菌処理効果測定方法
US7430046B2 (en) 2004-07-30 2008-09-30 Biovigilant Systems, Inc. Pathogen and particle detector system and method
GB2420616B (en) * 2004-11-17 2010-10-13 Victor Higgs A pollution monitoring unit for monitoring local air quality
US7738099B2 (en) 2005-07-15 2010-06-15 Biovigilant Systems, Inc. Pathogen and particle detector system and method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090242799A1 (en) * 2007-12-03 2009-10-01 Bolotin Charles E Method for the detection of biologic particle contamination
US8628976B2 (en) * 2007-12-03 2014-01-14 Azbil BioVigilant, Inc. Method for the detection of biologic particle contamination
US9134230B2 (en) 2011-04-06 2015-09-15 Instant Bioscan, Llc Microbial detection apparatus and method
US9645160B2 (en) * 2011-05-13 2017-05-09 Hitachi High-Technologies Corporation Automatic analysis device
US20140140890A1 (en) * 2011-05-13 2014-05-22 Hitachi High-Technologies Corporation Automatic analysis device
US9207175B2 (en) * 2012-07-12 2015-12-08 KAIST (Korea Advanced Institute of Science and Technology) Condensing-type portable fluorescence detection system
US20140014855A1 (en) * 2012-07-12 2014-01-16 KAIST (Korea Advanced Institute of Science and Technology) Condensing-type portable fluorescence detection system
US10006850B2 (en) * 2014-05-28 2018-06-26 Azbil Corporation Particle detecting device
US20150346091A1 (en) * 2014-05-30 2015-12-03 Azbil Corporation Device for detecting particles in a liquid and method for detecting particles in a liquid
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
WO2019147590A1 (en) * 2018-01-23 2019-08-01 Cbrn International , Ltd. Bioaerosol particle detector
US10444137B2 (en) 2018-01-23 2019-10-15 Cbrn International, Ltd. Bioaerosol detector having safeguards
US20220224845A1 (en) * 2019-10-09 2022-07-14 Panasonic Intellectual Property Management Co., Ltd. Imaging device

Also Published As

Publication number Publication date
US8647860B2 (en) 2014-02-11
WO2008105893A2 (en) 2008-09-04
EP2041550A4 (en) 2011-08-24
WO2008105893A3 (en) 2009-01-15
US20120307234A1 (en) 2012-12-06
HK1132797A1 (en) 2010-03-05
KR101418295B1 (ko) 2014-07-10
KR20090060408A (ko) 2009-06-12
EP2041550A2 (en) 2009-04-01
JP2010513847A (ja) 2010-04-30
JP5388846B2 (ja) 2014-01-15

Similar Documents

Publication Publication Date Title
US8647860B2 (en) Pathogen detection by simultaneous size/fluorescence measurement
KR101581056B1 (ko) 크기와 형광의 동시 측정에 의한 병원균 검출
US8628976B2 (en) Method for the detection of biologic particle contamination
TWI447394B (zh) 利用尺寸／螢光同步判定之病原體偵測方法及系統
US7738099B2 (en) Pathogen and particle detector system and method
US7430046B2 (en) Pathogen and particle detector system and method
WO2009108223A2 (en) Pathogen detection by simultaneous size/fluorescence measurement
US7880878B2 (en) Particle counting and DNA uptake system and method for detection, assessment and further analysis of threats due to nebulized biological agents
TW201407150A (zh) 病原體及顆粒之偵測系統及方法
TWI424154B (zh) 病原體及顆粒之偵測系統及方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: BIOVIGILANT SYSTEMS, INC., ARIZONA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JIANG, JIAN-PING;REEL/FRAME:019891/0172

Effective date: 20070622

AS Assignment

Owner name: BIOVIGILANT SYSTEMS, INC., ARIZONA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MORRELL, MICHAEL;MORRIS, GREGORY SCOTT;SIGNING DATES FROM 20090206 TO 20090223;REEL/FRAME:022458/0162

AS Assignment

Owner name: YAMATAKE CORPORATION, JAPAN

Free format text: SECURITY AGREEMENT;ASSIGNOR:BIOVIGILANT SYSTEMS, INC.;REEL/FRAME:022460/0447

Effective date: 20090327

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION