WO2002059576A1 - Dispositif d'identification de petits objets et son procede d'identification - Google Patents
Dispositif d'identification de petits objets et son procede d'identification Download PDFInfo
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- WO2002059576A1 WO2002059576A1 PCT/JP2002/000563 JP0200563W WO02059576A1 WO 2002059576 A1 WO2002059576 A1 WO 2002059576A1 JP 0200563 W JP0200563 W JP 0200563W WO 02059576 A1 WO02059576 A1 WO 02059576A1
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- measurement
- minute object
- minute
- irradiation
- light
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- 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
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- 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
- G01N2015/1488—Methods for deciding
-
- 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
- G01N2015/1497—Particle shape
Definitions
- the present invention relates to a minute object identification device and an identification method thereof.
- the present invention relates to fields requiring inspection, analysis, and analysis of biopolymers such as genes, the immune system, proteins, amino acids, and sugars, for example, the fields of engineering, food, agricultural products, and agriculture such as fish processing. It relates to all fields, including the fields of medicine, pharmacy, hygiene, health, immunity, disease, genetics and other medical fields, and chemistry and biology and other scientific fields. Background art
- the flow cytometer 160 has a flow path 151 through which the fluid containing the target minute substance flows.
- the flow path 151 is provided with a water flow tank 157, and a part of the transfer pump 158 is provided with a measurement flow path 152 formed of a translucent member.
- a light source 15 4 that irradiates one type of excitation light to the measurement channel 15 2 in a wide range, and a target micro object existing in the irradiation range are provided.
- a light-receiving unit 153 for receiving the fluorescence emitted from the fluorescent substance is provided. The intensity of the received light is analyzed by the analysis unit 155, and the presence or absence of the target minute object is detected.
- a transfer pump 158, switching valves 159, 161 and a disposal tank 163 are provided in the flow path 151.
- Reference numeral 156 denotes a suction mechanism for sucking a liquid containing fine substances into a flow path 551 from a container 251 provided outside through a nozzle 162.
- a plurality of types of excitation light are irradiated over a relatively wide range at a single measurement position in the flow channel to a minute object labeled with a plurality of types of fluorescent substances, and the relatively wide range of the minute object is irradiated.
- the device that receives a plurality of types of light has a problem in that it is not possible to individually identify many types of minute objects labeled with a plurality of types of labeling substances.
- a first object of the present invention is to pay attention to each minute object and to collect all the sign elements of the minute object at once for each minute object.
- a first object of the present invention is to pay attention to each minute object and to collect all the sign elements of the minute object at once for each minute object.
- a small object identification device that simplifies the structure at the point as much as possible, reduces the amount of light to be illuminated and minimizes the adverse effect on light reception, and can identify small objects reliably and with high reliability. ⁇ Provide the identification method.
- the second purpose is to measure one microscopic object at two or more measurement points with a time lag, and to measure various different postures, directions, or postures of one microscopic object between measurement points. It is possible to measure the label information from each minute object without omission.
- An object of the present invention is to provide a minute object identification device and a method for identifying the minute object with high accuracy.
- the third objective is to eliminate the effects of overlapping small objects as much as possible by dispersing a large number of minute objects and making measurements at two or more measurement points with a relative time relationship.
- An object identification device and an identification method thereof are provided.
- the fourth purpose is not limited to identifying several types of minute objects, but minute objects that can easily, reliably, and efficiently identify many types, such as tens, hundreds, thousands, and tens of thousands.
- An identification device and an identification method thereof are provided.
- a fifth object is to provide an apparatus and a method for identifying a minute substance suitable for the analysis, analysis, and inspection of biomolecules such as DNA, the immune system, proteins, amino acids, and sugars.
- a sixth object is to provide a flexible or versatile minute object identification device capable of flexibly responding to a processing purpose and an identification method thereof. Disclosure of the invention
- the first invention is to provide a dispersing step of dispersing a large number of various kinds of minute substances labeled by the presence or absence or a combination of a plurality of kinds of labeling elements;
- the types of the marker elements are allocated and associated with the measurement points, and the presence or absence or the degree of the marker elements of the type associated with each measurement point is determined for each of the dispersed minute objects between the measurement points.
- the minute object is identified by associating a measurement step of measuring at each measurement point with a relative time relationship and a measurement result measured at each measurement point based on the time relationship and the positional relationship between the measurement points. This is a method for identifying a minute object having an identifying step.
- fines is an object of the particulate, for example, 0. 1 mu m to have a 1 0 0 mu magnitude of the order of m, is formed polystyrene, foamed material, a magnetic material such as May also be used.
- Presence or absence of a labeling element refers to the presence or absence or degree of a mutually identifiable element. For example, the degree of the size of a microscopic substance itself or the labeling substance of the microscopic substance, the refraction of the material Rate, reflectivity, magnetic susceptibility, electric or magnetic field strength, or electromagnetic waves (radio waves, visible light, ultraviolet, infrared,
- the electromagnetic wave is not limited to the case where the minute object itself or the labeling substance of the minute object is self-generated, and is affected by the electromagnetic wave from the minute object or other than the above-mentioned labeling substance (for example, reflection, transmission, shielding, Absorption, etc.) This includes the case of labeling.
- Measurement with relative time relationship between each measurement point means that measurement is performed so that measurement time can be relatively specified at each measurement point.
- the measurement at each measurement point can be performed with a time difference provided, so that the device configuration at each measurement point can be simplified as compared with the case where measurement is performed at once.
- the possibility of accidentally measuring information from a state in which a plurality of minute objects are overlapped is eliminated. Due to the fluctuation of the minute object or the difference in the posture, direction, or posture of the minute object between the measurement points, the label information from each minute object can be measured without omission.
- the number of measurement points is determined by the content of the marker element, the number of types of the marker element, processing purpose, arrangement state, size of minute objects, and the like.
- the “measurement points” are configured so as to occupy a predetermined minute area determined by the size of the minute object, so that the area occupied by each measurement point is a predetermined minute area that is approximately one minute object. It is possible to avoid multiple measurements at each measurement point.
- the dispersing step includes an introducing step of introducing a liquid in which a large number of the various kinds of minute substances are suspended into a predetermined dispersion area to thereby disperse the liquid.
- the process is performed by giving a velocity along the movement direction to two or more measurement points arranged along the predetermined movement direction on the surface of the region or outside thereof, or to the minute object. This is a minute object identification method in which points are mutually measured based on the time relationship.
- the “dispersion region” refers to a region where the microscopic objects are arranged so as to be dispersed and scattered within the region so that measurement can be performed in a state where individual microscopic objects are separated.
- a channel or a container For example, a channel or a container.
- the “flow path” is a passage through which a liquid can flow, and the “container” is for containing a liquid or the like inside.
- These are, for example, structures such as a tubular body, a groove, a gap, a recess, and a plane. .
- the flow path portion where the measurement point is provided does not necessarily have to have a small diameter, and is thin. It may be planar.
- the term “small diameter” is not limited to the case where the shape is straight, but includes the case where the shape is curved.
- the size of the “dispersion region” is determined to be optimal or appropriate based on the size of the minute object, the properties of the liquid, the positional relationship, the time relationship, and the like. For example, the size of the “small diameter” is such that it has a diameter, for example, twice the size of the minute object.
- the “predetermined movement direction” is a direction in which a velocity is given to a measurement point or to a minute object.
- the dispersion region is a small-diameter flow path, its longitudinal direction is Appropriate.
- the “velocity” can be given to the minute object, to the measurement point, or to both.
- the speed is determined by the concentration, size, shape, mass, size, length, diameter, shape of the dispersion area, properties such as liquid viscosity, specific gravity, etc. Alternatively, it is determined by the performance of the apparatus.
- the "measuring step” includes an exciting step of irradiating an electromagnetic wave including light having a wavelength for exciting the fluorescent substance or the like or applying an electric field to any of the measuring points.
- the “measuring step” includes the step of measuring a plurality of the measuring points.
- the minute object can be identified by a combination of presence or absence or a degree of a plurality of types of marker elements, for example, by a combination of intensities corresponding to a plurality of types of wavelength ranges of electromagnetic waves.
- each sign element of the minute object is measured based on a relative time relationship and a positional relationship at a plurality of measurement points. ing. Therefore, for one small object, various different postures, Since the direction or the posture can be measured and the label information of each minute object can be measured without omission, the identification accuracy is high.
- the influence of the overlapping of the minute objects is measured by dispersing a large number of minute objects and providing a time difference as a relative time function at measurement points at two or more different positions. Reliable measurement can be performed by eliminating as much as possible. Also, according to the present invention, the structure at each measurement point is simplified as much as possible, the amount of light to be irradiated is reduced, and the adverse effect on light reception is minimized to identify small objects reliably and with high reliability. Can be
- biopolymers such as DNA, immune system, proteins, amino acids, and sugars, and various conditions are set for devices and the like according to the purpose of testing. Therefore, it is possible to flexibly identify various kinds of minute objects.
- the measuring step may include applying a speed to the introduced minute object and passing through the dispersion region portion, while applying a plurality of the fixed measurement points on the surface of the dispersion region portion or outside thereof. And measuring the intensity of the electromagnetic waves received at each of the measurement points based on the speed to identify the type of the minute object.
- An object identification method may be used.
- the present invention since measurement can be performed at a fixed measurement point, a mechanism for moving the measurement point can be omitted, and the structure can be simplified.
- the same minute object can move in various positions at each measurement point, compared to measuring the minute object at rest. Since it is possible to reliably detect the labeling substance or properties of the minute object without omission, and to move in a variety of ways at each measurement point even between a plurality of minute objects, for example, at a certain measurement point Even if they overlap, there is a high possibility that they will be separated at a certain measurement point and each individual small object will be measured independently.
- the identification step comprises: for each measurement point, a micro-identifying the type of the minute object by associating the intensity of the received electromagnetic wave with each other based on the predetermined moving speed.
- An object identification method may be used.
- the moving speed of the measuring point can be controlled mechanically and precisely, it is possible to reliably deal with minute objects, and thus the reliability is high.
- the measuring step comprises: moving the microscopic object at a predetermined speed along the predetermined moving direction at a predetermined moving speed while passing the microscopic object at the predetermined speed. Measuring the intensity of the electromagnetic wave by receiving the electromagnetic wave at a point, and in the identifying step, correlating the intensity of the electromagnetic wave received at each measurement point based on the predetermined speed and the predetermined moving speed.
- the method may be a minute object identifying method for identifying the type of the minute object.
- a liquid in which a large number of microscopic substances are suspended is introduced into the dispersion area, and a predetermined speed is applied to the measurement points or the microscopic substances.
- the presence or absence of the marker element or its degree can be measured with high reliability with a time difference.
- two or more measurement points are arranged in one or more rows along the predetermined movement direction, and each arrangement direction is parallel to the predetermined movement direction.
- This is a minute object identification method in which measurement directions at respective measurement points belonging to the same row are parallel to each other.
- the measurement direction and the arrangement Since it is possible to limit the object to be measured within the dispersion area that intersects with each plane extending so as to include the direction, it is possible to eliminate the mixture of data and errors (size, strength, etc.). .
- the measurement points are arranged in a row along the flow direction of the minute object, there is no mutual interference at the same time, and the measurement accuracy and reliability are improved.
- the respective arrangement directions and the predetermined movement directions are parallel to each other, and the irradiation directions at the respective irradiation points belonging to the same row are parallel to each other.
- the arrangement direction of the irradiation points and the predetermined It is preferable that each plane stretched so as to include the moving direction and each plane relating to the measurement point intersect in the dispersion area. As a result, more accurate and highly reliable measurement can be realized.
- the “measurement direction” or “irradiation direction” is a direction in which electromagnetic waves such as light are received (light) or electromagnetic waves such as light are emitted (irradiate).
- the dispersing step includes a minute object having a speed along a moving direction of the minute object, and having a relative speed with respect to the dispersion region around a direction perpendicular to the speed direction. This is a method for identifying a minute object in which a fluid containing the minute object is surrounded by no fluid.
- the fluid containing the minute substance flows as the core flow through the dispersion region portion so as to be surrounded by the fluid not containing the minute substance.
- a core flow includes, for example, a thin tubular body, a groove-shaped, a gap-shaped, or a concave-shaped flow path through a flow path-injector, and includes a flow path containing the fine substance and a fine substance thicker than the flow path. No fluid is introduced into the flow path or vessel. In this case, it is preferable that the flow path or the injector through which the fluid containing the minute substance flows and the flow path or the vessel through which the liquid not containing the minute substance flows share the same axis.
- the cross section of the fluid Downstream from the core flow injection tip, the cross section of the fluid is provided so as to gradually decrease along the flow direction, thereby stabilizing the flow in the dispersion region downstream from the core flow injection tip.
- the fineness, thickness, flow rate, and the like of the flow path can be adjusted so that the minute objects pass through the measurement point one by one. In that case, it is preferable that the thick channel or the container has a conical slope that is gradually tapered.
- a stable flow of the minute object can be obtained in the dispersion area portion, so that the minute object at the measurement point can be reliably measured.
- each type of the mark element emits an electromagnetic wave having a wavelength in a range different from each other, and a degree of the mark element is determined by an electromagnetic wave emitted by the mark element.
- the various kinds of labeled microscopic objects are distinguished from each other by the difference in the combination of the wavelength ranges of the electromagnetic waves emitted by the labeling elements of the microscopic objects or the combination of the wavelength range and the intensity ratio thereof. This is the object identification method.
- Each type of labeling element emits electromagnetic waves of wavelengths different from each other means a labeling substance such as a fluorescent substance that emits various kinds of fluorescence.
- the “intensity of the electromagnetic wave emitted by the sign element” is determined by the amount of the sign element, and the larger the amount, the higher the electromagnetic wave intensity.
- the term “intensity ratio” refers to a method in which the quantity ratio of the labeling element (mainly between minute objects) is set for each minute object, rather than the amount of the marking element is determined for each minute object. Is easy in manufacturing.
- the plurality of types of labeling elements are labeling substances such as a fluorescent substance, and are included in a predetermined quantitative ratio with respect to one type of minute substance. By making the type and quantity ratio of labeling substances different, they can be distinguished from each other.
- Electromagnetic waves include not only visible light, but also radio waves of various wavelengths, infrared, ultraviolet,
- Including X-rays In the case of visible light, etc., transmission is performed using a predetermined fiber, and in the case of radio waves, a waveguide is used.
- the presence / absence and intensity of the electromagnetic wave of each minute object are measured at each measurement point for each of the wavelength ranges. Further, at any one of the measurement points in the measurement step, electromagnetic waves from the plurality of types of labeling substances may be received at once, and the presence or absence of the electromagnetic waves may be measured. In that case, the quantitative ratio between the labeled substances can be measured reliably, accurately and reliably.
- each type of the labeling element emits electromagnetic waves having wavelengths different from each other, and the degree of the labeling element is the intensity of the electromagnetic wave.
- the minute objects described above are distinguished from each other by a combination of wavelengths of the electromagnetic waves emitted by the marker elements of the minute objects or a combination of the wavelengths and the intensity ratio thereof. ADVANTAGE OF THE INVENTION According to this invention, many types of minute objects can be reliably identified with a simple device and easy analysis.
- a reference minute object having a mark serving as a definite reference is dispersed together with the target minute object as the minute object, and the identification step captures a measurement result of the reference minute object.
- This is a minute object identification method for identifying the type of the target minute object.
- a reference minute object serving as a reference of a mark is used as the minute object.
- the identification step takes in the measurement result of the reference minute object and identifies the type of the target minute object so that each measurement point, different time, or different conditions By adjusting the variation in the measurement between the target and the target, it is possible to identify the target minute object with high accuracy and high reliability.
- the minute object in the measurement step, when the minute object has magnetic particles, the minute object is remotely operated by applying or removing a magnetic field to the dispersed minute object. This is a method for identifying a minute object for performing measurement.
- the magnetic field may be applied to the flow path portion along the curved shape.
- the minute objects are arranged in the flow path, and each minute object is individually measured.
- the object minute object by applying or removing a magnetic field to or from the minute object, the object minute object can be kept or aligned in the dispersion area, or the relative speed between the object and the measurement point can be freely controlled. As a result, reliable and accurate measurement can be performed.
- the labeling element is a luminescent substance requiring excitation light for luminescence, together with the luminescence intensity, the excitation light intensity for simultaneously exciting the luminescent substance is measured
- the identification step there is provided a method of identifying a minute object by correcting the measured value of the emission intensity based on the simultaneously measured intensity of the excitation light.
- a luminescent substance whose labeling element requires excitation light for luminescence is, for example, a fluorescent substance or a phosphorescent substance.
- the intensity of the excitation light is transmitted light, scattered light or reflected light depending on the position where the excitation light is irradiated.
- a highly reliable measured value can be obtained by correcting a variation in a measured value due to a change in a passing position of a minute object in the dispersion region portion or a change in excitation light intensity.
- a highly reliable measurement value can be obtained by correcting a deviation of a passing position of a minute object in the dispersion area portion and a variation of a measurement value due to a change in excitation light intensity.
- the ninth invention is directed to a dispersion region in which a large number of various types of minute substances labeled by the combination of the presence or absence or the degree of a plurality of types of labeling elements are dispersed, and two or more measurement points include
- the types of marker elements are allocated and associated with each other, and the presence or absence or the degree of the marker elements of the type associated with each measurement point is determined for each of the minute objects dispersed in the dispersion area section by using each measurement point.
- a measuring device that measures at each measurement point with a relative time relationship between them, and the measurement result measured at each measurement point is associated with the minute object based on the time relationship and the positional relationship between the measurement points.
- This is a minute object identification device having an identification unit for identification.
- the identification unit captures a measurement result of the reference minute object as a liquid in which a reference minute object having a mark serving as a clear reference is suspended with the target minute object as the minute object.
- the type of object may be identified.
- the measuring point of the measuring device is arranged along a predetermined moving direction on or outside the dispersion area portion, and the predetermined moving direction is relative to the measuring point or the minute object.
- 1 is a minute object identification device having a moving unit that gives a predetermined speed along the axis.
- the moving unit may be a fluid mechanism that moves the minute object so as to pass through the dispersion area at a predetermined speed.
- the identification unit identifies the type of the minute object by associating the measurement results obtained for each measurement point with each other based on the predetermined speed.
- the moving unit comprises: a staying unit capable of staying a minute substance in the dispersion region; and a movement speed at a predetermined movement speed along a predetermined movement direction outside the surface of the dispersion region. And a moving body for moving the plurality of measurement points.
- the identification unit identifies the type of the minute object by associating the measurement results obtained for each measurement point with each other based on the predetermined moving speed.
- the moving unit is configured to move the microscopic object at a predetermined speed so as to pass through the dispersion area, a fluid mechanism that can accumulate the microscopic substance in the dispersion area, A moving body that moves the plurality of measurement points at a predetermined moving speed along the predetermined moving direction outside the surface of the dispersion area portion.
- the identification unit calculates the measurement result obtained for each measurement point at the predetermined speed.
- the type of minute object is identified by associating them with each other based on the predetermined moving speed.
- the two or more measurement points of the measuring device are arranged in one or more rows along the predetermined movement direction, and each arrangement direction is parallel to the predetermined movement direction.
- a minute object identification device in which measurement directions at respective measurement points belonging to the same column are parallel to each other.
- the arrangement direction and the predetermined movement direction of each irradiation point are parallel to each other, and that the irradiation directions at the irradiation points belonging to the same row are mutually parallel. According to the eleventh invention, the same effect as that described in the third invention is exerted.
- each of the measurement points has a speed along a moving direction of the minute object, and around a direction perpendicular to the velocity direction, with respect to the dispersion area portion.
- This is a minute object identification device in which a fluid containing a minute object is surrounded by a fluid containing no minute object having a relative velocity.
- the labeling elements are labeled so as to be distinguishable from each other by a difference in a combination of a wavelength range of an electromagnetic wave used for labeling the labeling element or a combination of a wavelength range and an intensity ratio.
- the measuring device includes: a plurality of receiving units that receive electromagnetic waves at a plurality of the measuring points on the surface of the dispersion area or outside the fixed unit; and fixing a tip of the receiving unit to each of the measurement points.
- This is a minute object identification device that has a mounting fixture to be attached, and a measuring unit that measures the intensity of the received electromagnetic wave for each receiving unit.
- the wave receiving unit is also fixedly mounted on the surface of the dispersion region or outside thereof.
- the moving unit is a moving unit that moves the plurality of measurement points at a predetermined moving speed along a predetermined moving direction outside the surface of the dispersion area unit
- the wave receiving unit is attached to the moving unit.
- the mounting fixture is configured to fix the wave receiving unit to the moving body.
- the moving section moves the minute object at a predetermined speed.
- a moving body to which the wave receiving unit is attached and moved, and wherein the mounting fixture may fix the wave receiving unit to the moving body.
- the measuring device converts the intensity of the electromagnetic wave received at each measurement point into an electric signal based on the position of the measurement point, the speed of the minute object or the measurement point, and a predetermined threshold. It is preferable that the discriminating section has a discriminating circuit for discriminating the type of the minute object based on the electric signal.
- the measuring device may determine, for example, a photoelectric conversion unit that converts the intensity of light received at each measurement point into an analog electric signal, and a converted analog electric signal for each measurement point in advance.
- An analog-to-digital (A / D) conversion unit that converts the minute object or the measurement point into a predetermined digital electric signal in synchronization with a predetermined time interval based on a predetermined speed of the measurement point according to one or more voltage thresholds.
- the identification unit may include a determination circuit that determines the type of the minute object based on the digital electric signal at each measurement point.
- the marker elements are mutually labeled using an electromagnetic wave, and the tip of the wave receiving portion for receiving the electromagnetic wave is fixed to each measuring point by a fixture and taken. Since they are attached, it is possible to determine the positional relationship between the measurement points and perform highly accurate identification.
- the identification unit when dispersing, as the minute object, a reference minute object having a mark serving as a clear reference together with the target minute object, captures a measurement result of the reference minute object. And a minute object identification device for identifying the type of the target minute object. According to the present invention, effects similar to those of the sixth invention are exerted.
- the measuring device is an optical measuring device, wherein the wave receiving unit is located at a plurality of measurement points along a predetermined moving direction on or outside the surface of the dispersion area unit.
- a light receiving section provided with a plurality of light receiving fibers provided with two or more front end portions and receiving light from inside the dispersion area portion, wherein the mounting member is a front end portion of the light receiving fiber of the optical measuring instrument.
- a small object identification device that is fixedly attached to a movable body that is movable along the predetermined movement direction on the surface of the dispersion area portion or outside thereof or outside thereof. It is preferable that the tip of the light receiving fiber has an area corresponding to the predetermined minute area.
- the optical measuring device may be capable of irradiating the dispersion area with light through the light receiving fiber at each of the measurement points. According to the present invention, the structure can be simplified.
- the dispersion region portion is, for example, a light-transmitting conduit through which liquid can pass, and the light-transmitting protective member is integrally provided in the conduit.
- the dispersing region is a light-transmitting conduit in which a light-transmitting protective member is provided on the body, and therefore the moving body that easily moves the fixed point to the outside of the conduit. Can be provided.
- the measuring device is an optical measuring device, wherein a light receiving fiber is used as the wave receiving unit or an irradiation fiber is used as the irradiation unit. Therefore, it is possible to accurately pinpoint the position of each minute object in the dispersion area.
- the configuration of the entire device can be made compact.
- the mechanism can be simplified and the required energy can be reduced.
- a sixteenth aspect of the present invention is the optical measuring device, comprising: a plurality of irradiation fibers provided with one or two or more tips at irradiation points corresponding to two or more of the measurement points; The optical axis of the tip of the irradiation fiber provided at each irradiation point and the optical axis of the tip of each light receiving fiber provided at each measurement point are within a predetermined error range determined by the size of the minute object. And a light-receiving fiber and an irradiating fiber attached to the dispersion area so as to coincide with each other or intersect in the dispersion area at a predetermined angle.
- the ⁇ irradiation fiber '' is used, for example, in order to excite the labeling substance of the microscopic object when the microscopic substance is a fluorescent substance or the like, or the microscopic substance is labeled with plural kinds of coloring.
- at least one of the plurality of irradiation points may be irradiated with at least three types of visible light having a spectrum in a wavelength range that can be absorbed by at least three subtractive primary colors. good.
- the tip of the irradiation fiber and each of the light receiving fibers provided at each of the measurement points described above.
- the optical axis at the tip of the bar coincides within a predetermined error range determined by the size of the minute object, or intersects at a predetermined angle in the dispersion region.
- the optical measurement device may include two or more of the measurement points.
- light from a plurality of types of light-emitting substances may be received at a time by irradiating the excitation light.
- an effect similar to that described in the fifteenth aspect is exerted on a luminescent substance requiring excitation light.
- a seventeenth aspect of the present invention is the mounting device, wherein the irradiation-side holding portion includes a plurality of irradiation fibers, the end portions of which are arranged and held so that the end surfaces of the irradiation fibers are located on the end surfaces or penetrate the end surfaces.
- the irradiation-side holding unit and the light-receiving-side holding unit are fixed to the dispersion region unit such that a dispersion region unit is formed between the both end surfaces of the holding unit.
- This is a minute object discriminating device which is an elongated slit-like hole provided in a thin plate sandwiched from both sides by a side holding portion and both end surfaces of the light receiving side holding portion.
- the light-receiving-side holding unit and the irradiation-side holding unit may be formed, for example, by using both terminals of an optical fiber connector, and by providing a gap between the two terminals. is there.
- the irradiation-side holding portion and the light-receiving side holding portion are formed of, for example, a resin material or a metal material, so that the tip end of the irradiation fiber and the tip end of the light receiving side fiber are respectively embedded. It may be held.
- an effect similar to that described in the fifteenth aspect is exerted on a luminescent substance requiring excitation light.
- the dispersion region portion is formed between the irradiation side holding portion and the light receiving side holding portion. Since it is an elongated slit-like hole provided in a thin plate sandwiched from both sides by both end surfaces, the structure is simple and easy to make.
- An eighteenth invention is directed to a minute object provided with magnetic force means capable of remotely controlling the minute object by applying and removing a magnetic field to the inside of the dispersion area outside the dispersion area. It is an identification device.
- the dispersion area portion is a small-diameter flow path, it is formed by bending the measurement flow path portion into a curved shape having a predetermined curvature, and the magnetic force means forms a magnetic pole with respect to the measurement flow path. It may be provided so as to be movable close to and away from it.
- the direction of movement of the magnetic pole is preferably such that the direction of the magnetic field is along the flow path on the upstream side of the measurement flow path.
- a nineteenth invention is directed to, when the labeling element is a luminescent substance that requires excitation light for light emission, wherein the measuring device is an optical measuring device, and the optical measuring device comprises two or more of each of the above.
- An irradiation unit for irradiating excitation light for exciting the luminescent substance at an irradiation point corresponding to the measurement point; and a light receiving unit for receiving the excited luminescence and the excitation light at each of the measurement points;
- the unit is a minute object identification device that identifies the minute object by correcting the measured value of the emission intensity based on the measured value of the excitation light intensity obtained at the same time.
- 20th invention is the optical measuring device, wherein one or two or more tips are provided on a surface of the separation region or a plurality of measuring stores along a predetermined moving direction outside the surface.
- a light-receiving unit provided with a plurality of light-receiving fibers for receiving light from within the dispersion area, and a plurality of irradiations provided with one or more tips at the irradiation points corresponding to the two or more measurement points
- the light receiving fiber is a minute object discriminating device in which the core diameter of the tip of the light receiving fiber is smaller than the core diameter of the irradiation fiber.
- the core diameter of the distal end of the light-receiving fiber is preferably, for example, about 50 to 65% of the core diameter of the irradiation fiber.
- the displacement of the passing position of the minute object in the dispersion area is controlled.
- the measurement sensitivity can be improved.
- FIG. 1 is an overall conceptual diagram of the minute object identification device according to the first embodiment of the present invention
- FIG. 2 is a diagram showing the measurement of the minute object identification device according to the first embodiment of the present invention
- FIG. 3 is an enlarged view of the vicinity of the flow path
- FIG. 3 is a detailed view of a mounting portion according to the first embodiment of the present invention
- FIG. 4 is a mounting diagram according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing an example of a minute object according to the first embodiment of the present invention
- FIG. 6 is a diagram showing an example of a minute object according to the first embodiment of the present invention.
- FIG. 7 is a diagram showing a measuring unit of an optical measuring device according to the present invention and its periphery
- FIG. 7 is an overall conceptual diagram of a minute object identification device according to a second embodiment of the present invention
- FIG. 9 is an enlarged view of a measurement channel of the minute object identification device according to the second embodiment of the present invention
- FIG. 9 is a minute object measurement device of the minute object identification device according to the third embodiment of the present invention
- FIG. 10 is an overall conceptual diagram of a minute object identification device according to a fourth embodiment of the present invention
- FIG. 11 is a fifth conceptual embodiment of the present invention.
- FIG. 12 is an overall conceptual diagram of the minute object identification device according to the embodiment
- FIG. 12 is an overall conceptual diagram of the minute object identification device according to the sixth embodiment of the present invention
- FIG. 14 is a conceptual diagram showing a magnetic device according to a seventh embodiment of the present invention.
- FIG. 14 is another view of another liquid introduction device of the minute object identification device according to the third or fourth embodiment of the present invention.
- FIG. 15 is a piping diagram showing an example,
- FIG. 15 is an operation explanatory diagram of the liquid introduction device shown in FIG. 14, and
- FIG. 16 is a measurement flow path according to an eighth embodiment of the present invention.
- FIG. 17 is a diagram showing a measurement result of the minute object identification device according to the first embodiment of the present invention, and
- FIG. 18 is a flow site diagram according to a conventional example.
- FIG. 1 shows the entirety of a minute object identification device 10 according to the first embodiment.
- This micro-object identification device 10 is based on the combination of presence or absence or degree of multiple types of sign elements.
- a small-diameter flow path 11 as the dispersion area portion, through which a liquid containing a large number of various kinds of target microparticles labeled by the above flows.
- a part of the flow channel 11 is a measurement flow channel 12 for measuring a minute substance contained in the liquid.
- a measurement flow channel 12 for measuring a minute substance contained in the liquid.
- the minute object identifying device 10 is a device for distributing the intensity of electromagnetic waves traveling in the lateral direction of the flow channel 11 from the liquid introduced into the flow channel 11 as the marker element along the flow channel direction.
- An optical measuring device 14 is provided for measuring the temporal variation of the intensity of the electromagnetic wave in the wavelength range associated with each measuring point 13 with a predetermined time difference at each measuring point 13.
- the optical measuring device 14 includes a plurality of light-receiving fibers 15 as a plurality of light-receiving portions provided with tips at the measurement points 13, and a wavelength range associated with each light-receiving fiber 15.
- a measuring unit 16 for measuring the intensity of the received light The optical axis directions of the distal ends of the respective light receiving fibers 15 are parallel to each other, and in this example, are perpendicular to the flow path direction, and are aligned with the center axis of the flow path 11. It is suitable.
- the micro area at the tip of the fiber 15 is set to a size and a position such that one micro object is entirely included but two or more micro objects are not included.
- the optical measuring device 14 is arranged such that, when the fluorescent substance contained in the minute substance is adopted as the labeling element, the fluorescent substance is excited to measure the fluorescence intensity to identify the fluorescent substance.
- a plurality of irradiation points 17 that can emit light so as to identify the size of the minute object by measuring the intensity of the irradiation light shielded by the minute object are used. have.
- the plurality of irradiation points 17 are provided on the side surface of the measurement flow path 12 in a line in a straight line along the flow path direction corresponding to the measurement points 13.
- the optical measuring device 14 includes an irradiation fiber 18 as the irradiation section provided with a tip thereof so that excitation light can be irradiated at a plurality of irradiation points 17, and the irradiation fiber Laser light source, xenon lamp, xenon lamp, etc. It has a light source 19 such as a mercury lamp.
- the irradiation directions of the distal end portions of the irradiation fibers 18 are parallel to each other, and in this example, are perpendicular to the flow path direction and face the center axis of the flow path 11.
- the small area at the tip of the fiber 18 is set so as to include one entire small object but not to include two or more small objects.
- the irradiation point 17 and the measurement point 13 are provided so as to face each other with the measurement channel 12 interposed therebetween, and the optical axis of each end of the light receiving fiber 15 and the irradiation fiber 18 is provided. Is fixedly attached to the measurement channel 12 by the fixture 20 so as to coincide with each other within an error range determined by the size of the minute object.
- the flow path 11 of the minute object identification device 10 includes, in order, a water flow tank 23 for storing a liquid such as water for diluting a liquid for suspending the target minute object, and a flow path 11 1 A transport pump 24 for transporting the liquid in the chamber, a three-way valve 25, 26, 26a for switching between two flow paths selected from the three flow paths, and the measurement flow path 1 and a disposal tank 27 for storing the liquid to be disposed.
- a water flow tank 23 for storing a liquid such as water for diluting a liquid for suspending the target minute object
- a flow path 11 1 A transport pump 24 for transporting the liquid in the chamber, a three-way valve 25, 26, 26a for switching between two flow paths selected from the three flow paths, and the measurement flow path 1 and a disposal tank 27 for storing the liquid to be disposed.
- a suction nozzle 22 that can be inserted into a container 21 provided outside the flow path 11 and stores the liquid containing the minute substance and that can suck the liquid from the container 21,
- a cleaning liquid nozzle 22 a capable of sucking a cleaning liquid from a container 21 a containing a cleaning liquid provided outside the flow path 11 and a suction / discharge mechanism 28 are provided.
- the physical quantities such as the inner diameter and length of the flow path 11 or the measurement flow path 12 and the flow velocity of the liquid flowing inside the flow path are as follows: the diameter of the minute substance to be used, the diameter of the flow path, the identification substance to be used, the concentration, and the liquid to be used. It is determined according to the specific gravity, viscosity or purpose of use. Further, in the minute object identification device 10 according to the present embodiment, the three-way valves 25, 26, 26a, the suction / discharge mechanism 28, and the transport pump 24 are controlled by the mechanism. A mechanism control unit 30 for performing the operation is provided.
- the transport pump 24 corresponds to the moving unit that moves the minute object at a predetermined speed.
- an operation Z display device 31 including a display unit and an information processing unit (not shown) is provided.
- Reference numeral 32 denotes a predetermined time difference for each of the measurement points 13 of the optical measuring device 14, and The identification unit identifies the type of the minute object by associating the intensity of the obtained electromagnetic wave with each other based on the speed of the minute object in the measurement flow path 12.
- FIG. 2 (a) is an enlarged schematic view of the measurement flow channel 12 shown in FIG.
- a high-concentration suspension in which the target minute substance introduced into the flow channel 11 is suspended is mixed with water from the water flow tank 23 to dilute the liquid 33 to the measurement flow channel 1. Control to pass through 2.
- the liquid 33 has properties such as a shape, a size, a refractive index, a reflectance, an emission wavelength, an emission intensity, etc., which are labeled according to a predetermined clear standard or serve as a predetermined clear reference.
- Reference microscopic material 35 is suspended.
- the identification unit 32 identifies the types of the various types of target minute objects based on the measurement results of the target minute object 34 and the reference minute object 35. This makes it possible to unify and adjust the measurement results when using different measuring instruments, flow paths and other devices, and samples, etc., and to prevent errors in the measurement results.
- reference numeral 20a denotes an irradiation-side holding unit, and the tip of the irradiation fiber 18 is positioned such that the end faces of the irradiation fibers 18 are located at the irradiation points 17 on the end face.
- the sections are held, for example, in a row.
- Reference numeral 2Ob denotes a light receiving side holding unit, and the distal end of the light receiving fiber 15 is positioned such that the distal end surfaces of the plurality of light receiving fibers 15 are located at the respective measurement points 13 on the end surface. For example, they are held in a row.
- the measurement channel 12 is formed between an end face of the light receiving side holding section 20b and an end face of the irradiation side holding section 20a.
- the optical axes of the distal ends of the fibers 15 and 18 of the light receiving side holding portion 20b and the irradiation side holding portion 20a are provided so as to coincide with each other. Have been.
- the irradiation side holding part 20a and the light receiving side holding part 20b form each terminal of the optical fiber connector.
- FIG. 2 (b) shows another example of the optical measuring device according to the first embodiment.
- the measurement points 13 are set such that the optical axis of the distal end of the light receiving fiber 15 and the optical axis of the distal end of the irradiation fiber 18 intersect at a predetermined angle in the measurement flow path 12.
- Reference numeral 29 denotes a measuring flow path for the receiving fiber 15 and the irradiating fiber 18. It is a fixture for attaching to 1 and 2.
- FIG. 3 shows the fitting 20 in more detail.
- the fixture 20 according to the present embodiment is provided with the irradiation-side holding portion 20a provided with the irradiation fiber 18 and the light-receiving fiber 15. It has the light receiving side holding portion 20b and a thin plate 20c such as a metal foil provided between the end surfaces of the holding portions 20a and 20b.
- Reference numeral 20e denotes a screw for fixing and attaching the irradiation-side holding unit 20a, the light-receiving-side holding unit 20b, and the thin plate 20c.
- the flow path 11 penetrates the light receiving side holding portion 20b and reaches the thin plate 20c so as to be perpendicular to the surface of the thin plate 20c.
- FIG. 3 (b) is an exploded view showing the mounting fixture 20 shown in FIG. 3 (a) in an exploded manner.
- a slit-shaped long hole 20d having a predetermined width is provided.
- the long hole 20d corresponds to the measurement flow path 12, and both ends of the long hole 20d.
- Part 20 f, 2 is an exploded view showing the mounting fixture 20 shown in FIG. 3 (a) in an exploded manner.
- the elongated hole 20 d communicates with the flow path 11, and its opening is closed by the holding portions 20 a and 20 b from the front side and the back side.
- Fig. 3 (c) is the same as Fig. 3 (a).
- FIG. 2 is a sectional view taken along line AA.
- FIG. 3D is an enlarged cross-sectional view showing the vicinity of the measurement point 13 and the irradiation point 17 of the attachment 20.
- the length of the elongated hole 20d is, for example, on the order of about 10 mm, and the width thereof is, for example, about 0.01 mm.
- the transmission core diameter of each optical fiber is, for example, about
- the irradiation side holding unit 20a and the light receiving side holding unit 20b are arranged such that the optical axes of the fibers 15 and 18 are within a predetermined error range determined by the size of the minute object (in this case, soil
- each end of the receiving fiber 15 and the irradiating fiber 18 can directly contact the liquid in the measurement channel 12, and from the inside of the measurement channel 12. The light can be directly received, and the light can be directly irradiated into the flow path. As a result, optical noise can be prevented and highly accurate measurement can be performed.
- the flow path 11 is not limited to the case where the flow path 11 is bent and connected to or connected to the slit-shaped hole 25 d corresponding to the measurement flow path 12 at a substantially right angle. However, there may be a case where the slit-shaped holes 25 d are connected or connected linearly (straight) without bending. In this case, since an excessive force by the flow path is not applied to the liquid passing through the flow path, speed or position control is reliable and easy.
- FIG. 4 shows in detail a fixture 120 according to another example of the optical measuring device of the present embodiment.
- the fixture 120 is suitable for the case where the measurement flow path 121 is a tubular shape formed of a translucent material.
- the mounting fixture 120 includes the irradiation-side holding section 120a holding the irradiation fiber 18 and the light-receiving section holding the light-receiving fiber 15. It has a side holding portion 120b and a thin plate-shaped measurement channel protection portion 120c in which a tubular measurement channel 121 formed of a translucent material is embedded.
- the measurement channel protection section 120c is obtained by extending and processing the tubular measurement channel 121 and then integrally molding the same with a resin having the same refractive index as that of the measurement channel 122. is there.
- the irradiation side holding part 120a and the light receiving side holding part 120b form a connector for an optical fiber.
- FIG. 4B is an exploded view showing the mounting fixture 120 in an exploded manner.
- reference numeral 122 denotes a thin film-shaped protective mold which is the same as or has the same refractive index as the light-transmitting material of the measurement flow path 122, and which is formed integrally with the measurement flow path 121. Department.
- Reference numeral 123 denotes a fitting portion that fits and fixes the irradiation-side holding portion 120a and the light-receiving-side holding portion 120b from the front and back.
- the protective mold portion 122 is stretched so as to partition the fitting portion 123 into front and back.
- Each end of the irradiation side holding part 120a and the light receiving side holding part 120b is It is inserted from the front and back, is fitted and fixed to the fitting part 122, and its end face comes into contact with the substantially molded part 122.
- FIG. 4D is an enlarged cross-sectional view showing the vicinity of a measurement point 13 and an irradiation point 17 of the attachment 120.
- the length in the longitudinal direction of the measurement channel protection section 120c is, for example, about 2 Omm, and the thickness is, for example, about 2 mm.
- the thickness of the protective mold part 122 is, for example, about 0.1 mm, the inner diameter of the measurement channel 122 is, for example, about O.Olnmi, the outer diameter thereof is about 0.03 nmi, and the light receiving fiber
- the diameter of 15 and the irradiation fiber 18 is, for example, about .0.01 mm. In order to increase the measurement sensitivity, the diameter of the tip of the irradiation fiber 18 is made larger than the diameter of the tip of the light receiving fiber 15 so as to irradiate light over a relatively wide range. Is also good.
- the tip surfaces of the light-receiving fiber 15 and the irradiation fiber 18 are not provided directly on the side surface of the measurement flow path 121, but the thickness of the measurement flow path 121 and the protection Through the thickness of the mold part 122, light from the liquid in the measurement flow channel 121 is received and light is irradiated.
- FIG. 5 shows in detail examples of a plurality of types of target minute objects 34 to be identified by the minute object identifying apparatus 10 according to the present embodiment.
- Figure 5 (a) shows examples of microscopic objects 34a, 34b, and 34c as carriers that can carry the target substance, which identifies the target microscopic substance 34 as a labeling element in three different sizes, large, medium, and small. Show.
- the size of this diameter is, for example, 8111, 5, ⁇ m, 2111. In this case, identification is made by blocking the irradiation light, or by reflecting the irradiation light.
- each of the microscopic objects 34a, 34b, 34c itself is an appropriate luminescent substance, or the surface of each of the microscopic objects is coated with an appropriate luminous substance in an amount corresponding to the above three types of sizes. It may be something. Here, it is assumed that the luminescent substance emits one type of light in a certain wavelength range.
- Fig. 5 (b) shows, for example, that the microscopic object 34b as a medium-sized carrier shown in Fig. 5 (a) has three different wavelength regions that can be excited by one type of excitation light.
- Fluorescent substances as labeling elements, ⁇ 2 , A 3 can bind or bind target substance
- Binding to a small substance 34b as a carrier using a single-stranded support such as DNA substance 34d It was done. In this figure, assuming that the amount (mass) of one labeling element is equal (actually, this amount differs for each labeling element, but is assumed for the sake of simplicity).
- the quantitative ratio of A 2 and A 3 with respect to e is 1: 1: 1.
- FIG. 5 (c) a fluorescent substance, beta 2, B 3 the holding of DN A substances other single strand as-labeled elements with three different wavelength ranges that can excite other types of excitation light
- the figure shows a substance labeled by binding to a minute substance 34b as a carrier via a body 34d. If the amount of one label elements are equal, to the fine small 34 f, beta 2, ratio of beta 3 is again 1: 1: 1.
- Figure 5 (d) shows a labeling element with three different wavelength regions that can also be excited by one type of excitation light on the surface of the microscopic object 34a as the large-diameter carrier in Figure 5 (a). And a substance labeled with C 2 and C 3 . If the quantity of each one is equal, then the quantity ratio for 34 g of the microscopic object is again 1: 1: 1.
- FIG. 5 (e) shows an example of another type of microscopic substance 34h labeled by arbitrarily combining these.
- FIG. 6 shows the measuring section 16 of the optical measuring device 14 necessary for identifying the minute object illustrated in FIG. 5 in detail.
- the measuring section 16 is directly connected to the four receiving points 13 a, 13 b, 13 c, and 13 d from the light receiving fiber 15 fixedly provided or at the branch points 36 b and 36 c , 36 d and various filters 37 b, 37 c, 37 d, for example, light is taken in by four optical fibers, and an analog port having a voltage value of a height corresponding to the light intensity
- a photoelectric conversion unit 38 for converting the analog electric signal into a digital signal corresponding to a voltage value.
- the particle size in Fig. 5 (a) is The wavelength range of one kind of the luminescent substance can be received.
- the second th measurement point 1 3 b is intended to measure the existence and extent of the identification material in three Alpha 2, A 3, irradiation point 1 for irradiating a common one of the exciting light It is provided at a position facing 7.
- the light receiving fiber 1 5 has a branch point 3 6 b, the A 1, A 2, filter 3 7 for extracting the three different wavelength ranges of the A 3 b is provided. Further, a measurement point 13 is provided at a position facing the irradiation point 17 for irradiating one kind of common excitation light. In a third measurement point 1 3 c, is to measure the beta 2, 3 kinds of indicating substance whether you Yopi extent of B 3, the light receiving fiber 1 5 branch points 3 6 c In addition, it has a filter 37c for extracting three different wavelength ranges of, ⁇ 2 and B 3 .
- the fourth measurement point 13d measures the presence and extent of C i, C 2 , and C 3 .
- the light receiving fiber 1 5 also has a branch point 3 6 d, the, that have filter 3 7 d is provided for extracting the three different wavelength ranges of the C 2, C 3.
- a measurement point 13 is provided at a position facing the irradiation point 17 for irradiating one kind of common excitation light.
- the AD converter 39 outputs a digital signal corresponding to the intensity of light received at each measurement point in synchronization with the relative speed, that is, in this example, at a predetermined time interval determined based on the flow velocity. .
- the identification unit 32 correlates the digital signal of each measurement point with each other based on the position coordinates of each measurement point and the time interval of the digital electric signal output from each measurement point to identify the type of the target minute object. Identify.
- the measurement result or the identification result is sent to the operation / display device 31 and displayed on a display device or the like.
- the waveform of the electric signal that has been photoelectrically converted is recorded as it is, and the waveform of the temporal variation in the intensity of the received light at each measurement point is calculated based on the relative speed.
- the type of the target minute object may be identified by associating with each other.
- the mechanism control unit In order to identify a minute object by the minute object identification device and method according to the present embodiment, when an operator gives an operation instruction to the operation / display device 31, the mechanism control unit The flow path 11 is switched by 30 so that the three-way valves 26a, 25, and 26 can suction liquid, and the suction nozzle 22 can suction liquid.
- the suction / discharge mechanism 28 sucks a relatively small amount of liquid in which the target minute object and the reference minute object contained in the container 21 are suspended from the suction nozzle 22 and the three-way valve 26. .Convey to the discharge mechanism 28 side.
- the three-way valve 25 and the three-way valve 26 are switched, and the water contained in the water flow tank 23 is pumped by the transport pump 24, and the water and the liquid in which the target minute substance is suspended And the mixed water is passed through the measurement channel 12 by the transport pump 24.
- excitation light having a predetermined wavelength is radiated from the light source unit 19 at each irradiation point 17 via the irradiation fiber 18, and light from the minute object passing therethrough is transmitted to the measurement point 13.
- the provided light receiving fiber 15 is received, and the received light is measured by the measuring unit 16, and the identification unit 32 identifies each minute object 34.
- the mixed water passed through is discarded in a disposal tank 27.
- the cleaning liquid is sucked from the container 2la, and the mixed water of the cleaning liquid and water is supplied to the measurement channel 12 as described above.
- FIG. 7 shows the entirety of the minute object identification device 50 according to the second embodiment. Note that the same reference numerals as those of the minute object identification device 10 according to the first embodiment described in FIG. 1 denote the same members, and a description thereof will be omitted.
- the present minute object identification device 50 replaces the optical measurement device 14 according to the first embodiment with respect to the liquid retained in the measurement flow path 12 1, for measuring points and irradiation points.
- An optical measuring device 54 for performing measurement by moving the optical measuring device is provided.
- the optical measuring device 54 is provided with a carriage 5 guided along two linear rails 52 provided along the measurement flow path 121 so as to be movable along the measurement flow path 121.
- the carriage 51 has a plurality of (four in this example) measurement points 53 arranged along the direction of movement as light-receiving parts whose tips are attached by mounting fixtures (not shown). Of the multiple receiving fibers 55 and each measurement point 53 It is possible to irradiate the excitation light at a plurality of (four in this example) irradiation points 57, which are also arranged along the moving direction of the carriage 51, opposite to each other across the measurement flow path 121.
- the irradiation fiber 58 has an irradiation part attached at its tip end by a fixture (not shown).
- a light receiving side holding section for holding the light receiving fiber, and an irradiation side for holding the irradiation fiber across the measurement flow path 121
- the holding section is fixed and attached to the carriage 51.
- the receiving fiber 55 and the irradiating fiber 58 have a flexibility or flexibility so as not to hinder the movement of the carriage 51 along the measurement flow path 121. It needs to be formed.
- FIG. 8 (a) is an enlarged view of the measurement flow path 121 of the optical measuring device 54 according to the second embodiment shown in FIG.
- the liquid 62 introduced into the flow channel 11 from the container 21 is controlled so as to alternately flow in the measurement flow channel 121 with the buffer solution 63 supplied from the water flow tank 23.
- the measurement is performed by moving the carriage 51 along the measurement flow path 121 while keeping them in the measurement flow path 121.
- FIG. 8B shows another example of the measurement flow path 121 of the optical measuring device 54 according to the second embodiment.
- the optical axis of the distal end of the light receiving fiber 55 and the optical axis of the distal end of the irradiation fiber 58 intersect at a predetermined angle at a central axis in the measurement flow path 121.
- the measuring point 53, the irradiation point 57, the light receiving fiber 55, and the irradiation fiber 58 are set and fixed to the carriage 61 with a fixture (not shown).
- Measurement points 5 (4 in this example)
- the 3 and the irradiation points 57 are arranged along the moving direction of the carriage 61.
- the diameter of the tip of the irradiation fiber 58 is set to
- the tip of the light-receiving fiber 55 may be formed to have a large diameter so as to irradiate light over a relatively wide range.
- the high-concentration suspension in which the target minute substance was suspended was mixed with water from the water flow tank 23 to dilute the liquid 3 introduced into the measurement flow path 121. 3 is retained in the measurement flow path 12 by operating the transport pump 24 and the suction / discharge mechanism 28, and the carriage 61 is moved to its tubular measurement flow path. The measurement is performed by moving at a predetermined moving speed along 1 2 1.
- a minute object identification device 70 according to the third embodiment will be described with reference to FIG. Note that the same reference numerals as those in FIG. 1 denote the same components, and a description thereof will be omitted.
- the minute object identification device 70 according to the present embodiment is the same as the flow channel according to the first embodiment.
- the suspension is introduced into the flow path 71 by using the liquid introduction device 73.
- a flow path 71 provided with the liquid introducing device 73 for temporarily storing the liquid and mixing it so as to discharge an amount corresponding to the instruction into the water flow is used. Its channel 7
- a part of 1 constitutes the measurement channel 72.
- the liquid introduction device 73 includes a suction nozzle 78 for sucking a liquid stored in a container 21 that stores the liquid containing the minute substance, and a suctioned liquid.
- a discharge nozzle 74 provided with a tip in the flow path 71, and discharging the liquid stored in the storage part 75, and stored in the container 21.
- Suction / ejection mechanism 77 for sucking the liquid from the suction nozzle 78 and discharging from the discharge nozzle 74, the suction nozzle 78 and the discharge nozzle
- a switching valve 76a, 76b capable of switching in the non-return direction for switching 74 is provided. It is preferable that the liquid introducing device 73 be provided detachably with respect to the flow path 71.
- the discharge nozzle 74 is provided coaxially at substantially the center of the flow path 71, and the water discharged from the flow path 71 causes the liquid discharged from the discharge nozzle 74 to flow in the core flow in the water flow. It is also possible to flow to form At this time, the discharge nozzle
- the diameter of 74 is formed so as to be sufficiently smaller than that of the flow path 71.
- the fluid (core flow) from the nozzle 74 includes the fine substance sucked from the container 21, and the fluid (sheath flow) not including the fine substance flows through the flow path 71.
- the measurement channel 72 is provided so as to be located downstream from the core flow injection tip of the discharge nozzle 74. At a point below the core flow injection tip, as shown in FIG. 9 or FIG. 10, the conical slope such that the cross-sectional area of the flow path 71 gradually decreases along the flow direction of the fluid. It is preferable to have (neck down area). What we want to avoid most in this region is a shape that generates turbulence.
- the ratio of the cross-sectional area of the core flow to the cross-sectional area of the sheath flow changes depending on the relative volume flow rate between the sheath flow and the core flow. This stabilizes the flow in the measurement flow channel 72 and, for example, can be adjusted so that the minute objects pass the measurement point one by one.
- a mechanism control unit 8 that controls the switching valves 76 a and 76 b, the suction / discharge mechanism 77, and the transport pump 83. 0 is provided. Further, an operation / display device 81 for performing an operation or an instruction and display for the optical measuring device 14 and the mechanism control unit 80 is provided.
- the liquid in which the minute substances 34 and 35 discharged from the discharge nozzle 74 are suspended and the buffer liquid region from the water flow tank 82 are set so as to be alternated.
- the liquid is passed at a flow rate, or is controlled so that the liquid in which the minute substances 34, 35 discharged from the discharge nozzle 74 are suspended is uniformly mixed with the liquid from the water flow tank 82.
- each of the microscopic objects 34 and 35 is measured in the measurement flow path 12.
- FIG. 10 illustrates a minute object identification device 90 according to the fourth embodiment. Note that the same reference numerals as those in the above-described drawings denote the same components, and a description thereof will be omitted.
- the minute object identification device 90 uses an optical measurement device 54 instead of the optical measurement device 14 used in the minute object identification device 70 according to the third embodiment. is there. Further, in the present apparatus 90, a mechanism control section 92 is provided to control the mechanism for the optical measuring device 54 together with the suction / discharge mechanism 77 and the transport pump 83. The mechanism control section 92 is driven by an operation instruction from the operation / display device 91.
- FIG. 11 illustrates a minute object identification device 100 according to the fifth embodiment.
- the liquid objective fine fragment is suspended yield capacity
- the nozzle tip 101 inserted into the container 21 provided outside, the storage part 102 for storing the sucked liquid, the nozzle tip 101 and the storage part 102, And a suction passage and a discharge passage which communicate with a measurement flow passage 106 in which a minute object is measured and which is located above the nozzle tip portion 101, and the storage portion 102. And a suction / discharge mechanism 103.
- the mechanism control unit 105 controls the suction / discharge mechanism 103 based on an instruction from the operation / display device 104.
- FIG. 12 illustrates a minute object identification device 110 according to the sixth embodiment.
- the minute object identification device 110 according to the present embodiment is the same as the fifth embodiment described above.
- An optical measuring device capable of moving the measuring point 53 with respect to the liquid retained in the measuring flow path 112 instead of the optical measuring device 14 of the minute object identification device 100 according to 5 4 is provided. Since the optical measuring device 54 has already been described, the description is omitted here.
- the magnetic device 125 includes a magnet 12 that is provided so as to be able to approach and separate from the measurement flow path 121 of the minute object identification device 50 according to the second embodiment. 6 and a magnet moving mechanism 127 for moving the magnet 126 closer to or away from the measurement flow path 121.
- the magnet moving mechanism 127 is controlled by the mechanism controller 56.
- FIG. 14 shows a liquid introduction device 130 according to another example of the liquid introduction device 73 used in FIGS. 9 and 10.
- the liquid introduction device 130 according to the present example uses a six-way valve 131, a four-way valve 132, and a three-way valve 133, 134 to provide a liquid or liquid in which the target microscopic substance is suspended.
- the cleaning liquid is introduced into the flow channel 71 of the minute object identification device according to the present embodiment.
- the liquid introduction device 130 further includes a suction nozzle 136 for sucking the liquid to be introduced from the container 21, and a suction nozzle for sucking the cleaning liquid from the container 21 a containing the cleaning liquid.
- a sample loop section 13 9 for measuring the amount of liquid and a suction / discharge mechanism 13 7 for performing suction and discharge of the liquid.
- These elements are connected by pipes 140, 141, 144, 142, 144, and 145, respectively, so that the liquid can move.
- FIG. 15 is an explanatory diagram of the operation of the liquid introduction device 130 shown in FIG.
- the three-way valve 13 4 is switched to connect the pipes 14 2 and 14 3, and the suction / discharge mechanism 13 7 Suction excess air from the syringe pump.
- a sample composed of the liquid is sucked from the container 21 from the suction nozzle 1336 by the suction / discharge mechanism 1337. After aspirating (up to 10 ⁇ l) aspirate, raise the tip of suction nozzle 1336 to the level where it comes out of the sample by the lifting mechanism (not shown). Air is further sucked from the suction nozzle 1336 by the suction / discharge mechanism 1337, and the sample is moved to the storage section 1338. Due to the presence of the air, no sample enters the syringe of the suction / discharge mechanism 137, so that contamination of the syringe by the sample is prevented.
- the four-way valve 13 2 is switched to connect the reservoir 13 8 to the pipeline 14 1, and the sample is filled in the sample loop 13 9 by the suction / discharge mechanism 13 7. Perform more detailed sample quantification.
- the 6-way valve 1 3 1 and the 4-way valve Switch 1 3 2 to connect line 1 4 2 to waste liquid nozzle 1 4 4 and discharge excess sample in pipes 14 1 and 14 2 into the waste tank. I do.
- the four-way valve 1 32 is switched, the storage section 1 38 is connected to the pipe line 140, and the sample is discharged from the suction / discharge mechanism 13 7 to the sample in the sample loop section 13 9 Is introduced into the flow channel 71 of the minute object discriminating apparatus via the discharge nozzle 135.
- the liquid introduction device 130 is cleaned.
- the three-way valve 13 3 is switched to connect the cleaning liquid nozzle 13 36 a with the pipe 14 5, and the suction / discharge is performed.
- the washing solution in the container 21a is immediately sucked using the ejection mechanism 1337.
- the storage section 13 8 is connected to the pipeline 14 0, and the suction and discharge mechanism 13 7 discharges to wash the inside of the sample loop section 13 9.
- the washing in the sample loop section 1339 is repeated several times from the switching of the three-way valve 133.
- the three-way valve 1 3 3 is switched to connect the cleaning liquid nozzle 13 6 a with the pipe 14 5, and the four-way valve 13 2 is switched so that the pipe 1 4 5 and the reservoir 1 3 8 Then, the cleaning liquid is suctioned by the suction / discharge mechanism 13 7.
- the four-way valve 13 2 is switched to connect the reservoir 13 8 to the pipe 14 1
- the three-way valve 13 4 is switched to connect the pipe 14 2 and the waste liquid nozzle 14 4.
- the suction and discharge mechanism 1 37 discharges to clean the pipes 14 1 and 14 2. From the switching of the three-way valve 133, the washing of the pipes of the pipes 141 and 142 is repeated several times.
- FIG. 16 shows a flow path 146 according to the eighth embodiment.
- the measurement flow path 146a in which the measurement is performed is formed to be curved in a force curve shape.
- Two or more measurement points 149 are provided on the side of the measurement flow path 146a where there is no center of curvature, and a light-receiving fiber as a light-receiving section provided with a tip at each measurement point 149a. 1 4 8 are provided.
- the magnetic field direction is in a direction along the flow path on the upstream side of the measurement flow path 144a, and the direction of the magnetic field is along the flow path on the upstream side.
- Proximity ⁇ Separation A permanent magnet (or an electromagnet) may be provided as the magnetic means 150 movably provided. When the magnetic force means 150 comes close to the measurement flow path 144a, a magnetic field of a predetermined strength is applied to the measurement flow path 144a to pass through the measurement flow path 144a. When the magnetic particles are passed so as to be aligned along the measurement flow path 146a and are separated from each other, a magnetic field of a predetermined intensity does not reach the measurement flow path 146a, and the magnetic particles are affected. Is provided not to give.
- FIG. 17 shows an example of the measurement result of the target minute object by the identification unit 32 according to the first embodiment.
- FIG. 17 illustrates an example in which the target minute object illustrated in FIG. 5 is identified.
- the first one is a small-diameter minute object 34a in Fig. 5 (a)
- the second is a medium-diameter minute object 34b in Fig. 5 (a)
- the third is a large one in Fig. 5 (a).
- the minute object 34c, the fourth is the minute object 34e in Fig. 5 (b), the fifth is the minute object 34f in Fig. 5 (c), and the sixth is the one shown in Fig. 5 (d).
- An example in which the microscopic object 34 g and the 7th object are captured by the measurement unit by passing through the flow path in the order of the microscopic object 34 h in Fig. 5 (e) or moving relatively. It shows.
- the first microparticle has only one-third of the items in the shape column, so it is the smallest particle among the three types of strength and thus the diameter, and other labeling substances. Are not bound.
- the second minute object has only two-thirds of the items in the shape column, so it is the middle minute object among the three types of strength, and thus the diameter, and the other labeling substance Not bound.
- the third microscopic object is identified as the largest particle among the three types, because only the items in the shape column are completely coated, so the strength, and thus the diameter, is large.
- a In ⁇ column A 2: ratio of A 3 are 1: 2: 1, and in ⁇ of ⁇ of B, B i: B 2: the ratio of B 3 is 1: 1: 2 ,: C 2: the ratio of C 3 is 2: 1: that are labeled are identified to have a first ratio.
- the intensity of the light wavelength in each column of FIG. 14 is appropriately standardized since the quantity ratio may be measured for each minute object.
- the measurement may be performed by measuring an electric field or the like.
- the description has been given only of the case where a fluorescent substance is used as a labeling element.
- another luminescent substance for example, a luminescent substance that does not require excitation light may be used.
- each measurement point and each irradiation point can be variously combined. Further, in the above embodiment, only the case where it is necessary to irradiate light such as excitation light has been described, but the present invention is not necessarily limited to the case where it is necessary to irradiate light.
- the size of the minute object, the type of marker element, the position and number of measurement points and irradiation points, the arrangement and size of the flow path, the mechanism, the size of the fiber, etc. are limited to the above examples. Let's go. Further, the fiber can be provided with various optical systems such as a filter, a branch, a connector, and a lens.
- the magnetic force device is used only when the measurement is performed by moving the measurement point in a state where the magnetic microscopic substance is kept stationary in the measurement flow path, but is not limited to this example.
- the magnetic microparticles are slowed down and aligned in the measurement flow path, or used to prolong the passage time in the measurement flow path. You can also.
- the time difference between the measurement points is finite
- the time difference may be zero.
- a set of eight measurement points (which are also irradiation points) arranged so as to surround a small-diameter flow path is arranged along the flow path, for example, 10 sets.
- one optical fiber is a light receiving fiber and an irradiation fiber.
- the measuring instrument is, for example, a receiving unit, an attachment
- the shapes and spatial arrangements of the fixture, the receiving fiber, the irradiating fiber, the irradiating side holding unit, the receiving side holding unit, and the optical fiber connector be substantially the same as each other. As a result, measurement deviation can be minimized.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20020711227 EP1371965B1 (en) | 2001-01-25 | 2002-01-25 | Small object identifying device and its identifying method |
| JP2002559643A JP4057422B2 (ja) | 2001-01-25 | 2002-01-25 | 微小物識別装置およびその識別方法 |
| US10/470,208 US7283229B2 (en) | 2001-01-25 | 2002-01-25 | Small object identifying device and its identifying method |
| US11/867,585 US7426027B2 (en) | 2001-01-25 | 2007-10-04 | Small object identifying device and its identifying method |
| US12/189,001 US7724364B2 (en) | 2001-01-25 | 2008-08-08 | Small object identifying device and its identifying method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001017630 | 2001-01-25 | ||
| JP2001-17630 | 2001-01-25 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10470208 A-371-Of-International | 2002-01-25 | ||
| US11/867,585 Continuation US7426027B2 (en) | 2001-01-25 | 2007-10-04 | Small object identifying device and its identifying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002059576A1 true WO2002059576A1 (fr) | 2002-08-01 |
Family
ID=18883794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/000563 Ceased WO2002059576A1 (fr) | 2001-01-25 | 2002-01-25 | Dispositif d'identification de petits objets et son procede d'identification |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US7283229B2 (ja) |
| EP (1) | EP1371965B1 (ja) |
| JP (1) | JP4057422B2 (ja) |
| WO (1) | WO2002059576A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006004176A1 (ja) * | 2004-07-01 | 2006-01-12 | Tama-Tlo Corporation | 検体分析素子 |
| EP1574838A4 (en) * | 2002-12-03 | 2011-09-28 | Bay Bioscience Kabushiki Kaisha | DEVICE FOR COLLECTING INFORMATION ON A BIOLOGICAL PARTICLE |
| JP2016527494A (ja) * | 2013-07-05 | 2016-09-08 | ユニバーシティ オブ ワシントン スルー イッツ センター フォー コマーシャライゼーション | マイクロ流体アッセイのための方法、組成物およびシステム |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1574838A4 (en) * | 2002-12-03 | 2011-09-28 | Bay Bioscience Kabushiki Kaisha | DEVICE FOR COLLECTING INFORMATION ON A BIOLOGICAL PARTICLE |
| WO2006004176A1 (ja) * | 2004-07-01 | 2006-01-12 | Tama-Tlo Corporation | 検体分析素子 |
| JPWO2006004176A1 (ja) * | 2004-07-01 | 2008-04-24 | タマティーエルオー株式会社 | 検体分析素子 |
| JP4565205B2 (ja) * | 2004-07-01 | 2010-10-20 | タマティーエルオー株式会社 | 検体分析素子 |
| JP2016527494A (ja) * | 2013-07-05 | 2016-09-08 | ユニバーシティ オブ ワシントン スルー イッツ センター フォー コマーシャライゼーション | マイクロ流体アッセイのための方法、組成物およびシステム |
Also Published As
| Publication number | Publication date |
|---|---|
| US7724364B2 (en) | 2010-05-25 |
| JPWO2002059576A1 (ja) | 2004-06-10 |
| US20040095568A1 (en) | 2004-05-20 |
| EP1371965A1 (en) | 2003-12-17 |
| US20080037831A1 (en) | 2008-02-14 |
| US7283229B2 (en) | 2007-10-16 |
| US7426027B2 (en) | 2008-09-16 |
| EP1371965A4 (en) | 2007-01-17 |
| JP4057422B2 (ja) | 2008-03-05 |
| EP1371965B1 (en) | 2015-04-29 |
| US20080297793A1 (en) | 2008-12-04 |
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