摘要:
A biological particle enrichment apparatus (2) and a pico-droplet generator (21) thereof are provided. The pico-droplet generator (21) includes a container (211), a hollow needle (212) connected to the container (211), a first piezoelectric member (213) disposed on the container (211), and a second piezoelectric member (214) disposed on the hollow needle (212). The container (211) can receive a liquid specimen (200) having biological particles (201). The hollow needle (212) and the container (211) are fluid communicated with each other, and an inner diameter (D211) of the container (211) is within a range from 5 times to 30 times of an inner diameter (D212) of the hollow needle (212). The first piezoelectric member (213) is annularly disposed on a surrounding lateral side (2112) of the container (211), and enables the biological particles (201) in the container (211) to move along a direction away from the surrounding lateral side (2112) by vibrating the container (211). The second piezoelectric member (214) can squeeze the hollow needle (212), so that the liquid specimen (200) flows outwardly to form a pico-droplet (202).
摘要:
A flow cytometer capable of easily and reliably providing flow cytometry results without requiring a special trained technician is provided. The flow cytometer 10 includes an input unit 60 that receives an input of information for specifying a measurement item, a condition selection unit 71 for selecting a measurement condition from among one or a plurality of measurement conditions corresponding to information for specifying the measurement item received by the input unit 60, and a measurement unit 65 having a flow cell 20 through which a particle-containing liquid containing particles in the sample passes, wherein the measurement unit 65 optically measures particles of the particle-containing liquid flowing through the flow cell 20 in accordance with the measurement condition selected by the condition selection unit 71.
摘要:
A sample measuring apparatus 10 includes: a laser diode 16a that applies laser light to a measurement specimen prepared from a sample; a detection unit 120 that acquires optical information from a particle in the measurement specimen to which the laser light is applied; a drive circuit 13 that supplies a direct-current drive signal to the laser diode 16a; and a high-frequency conversion circuit 14 that generates a potential that switches between a high level and a low level in a predetermined cycle to guide the drive signal outputted from the drive circuit 13 to a second signal path 103 which is different from a first signal path 102 connected to the laser diode16a in the predetermined cycle, thereby converting the drive signal to be supplied to the laser diode 16a into a high-frequency signal.
摘要:
Provided are a microparticle sorting device, and a method and a program for sorting microparticles capable of stabilizing sorting performance over a prolonged period of time. The microparticle sorting device includes an imaging element and a controller. The imaging element obtains an image of fluid and fluid droplets at a position where the fluid discharged from an orifice which generates a fluid stream is converted into the fluid droplets. The controller controls driving voltage of an oscillation element which gives oscillation to the orifice and/or controls a position of the imaging element based on a state of the fluid in the image and/or a state of a satellite fluid droplet. The satellite fluid droplet does not include microparticles and exists between the position, where the fluid is converted into the fluid droplets, and a fluid droplet, among fluid droplets including the microparticles, which is closest to the position where the fluid is converted into the fluid droplets.
摘要:
Disclosed herein is an optical detection method and optical detection apparatus, the apparatus including: a light irradiation section (4) configured to irradiate a laser beam (5) upon one of fine particles (3) which are successively fed in a flow path (2); and a light detection section (9) configured to detect fluorescent light and/or scattered light (10) generated from any of the fine particles (3) upon which the laser beam (5) is irradiated; the method including the steps of: irradiating a laser beam (5) upon one of fine particles (3) which are successively fed in a flow path (2); and detecting fluorescent light and/or scattered light (10) generated from the fine particle (3); wherein the laser beam (5) being formed as a pulse laser beam whose pulse intensity is modulated such that one laser beam or two or more laser beams (5) having different wavelengths are irradiated by a plural number of times upon one fine particle (3) with the intensity varied.
摘要:
Zur Erfassung einer Dekalibrierung einer Vorrichtung zum Untersuchen kleiner Partikel sieht die Erfindung ein Verfahren vor, bei dem die Partikel (5) mit Licht (4) bestrahlt werden, von den Partikeln gestreutes Licht (6) detektiert (8), das gewonnene elektrische Signal verstärkt (9), digitalisiert (10) und entsprechend der die Partikelgröße repräsentierenden Intensität in einer Vielzahl von digitalen Kanälen erfasst wird und darüber hinaus, dass das Auftreten des Mie-Peaks in der gemessenen größenabhängigen Häufigkeitsverteilung überwacht wird und bei Abweichung des Mie-Peaks in einem anderen als dem ihm aufgrund der Messeinstellungen zukommenden digitalen Normkanal eine Meldung ausgegeben wird. Hierzu ist bei einer Vorrichtung zur Erfassung der Konzentration kleiner Partikel in Gas, mit einem Proberohr (1), einer dieses bestrahlenden Lichtquelle (2), einem Detektor (8) zur Erfassung von an den Teilchen (5) gestreutem Streulicht (6), einem Analogverstärker (9), einem Analog-Digital-Wandler (10), einer Auswerteelektronik (11) und einer Anzeige- und Bedieneinheit (12), die Auswertelektronik zur Erfassung eines Mie-Peaks in der gemessenen Partikelanzahlverteilung und Zuordnung zu einem digitalen Erfassungskanal ausgebildet.
摘要:
A microparticle sorting device that automatically and accurately adjusts the positions of a fluid stream and a collection container is provided. The microparticle sorting device including a pair of deflecting plates that face each other with a passage area of a fluid stream therebetween, a camera that captures the image of the fluid stream, and a fluid stream detection light source that emits light parallel to a direction in which the deflecting plates face each other and that is movable in a direction perpendicular to the fluid stream and the light is provided. In the microparticle sorting device, the collection container that receives the fluid stream is mounted so as to be movable in the direction perpendicular to the fluid stream and the light.
摘要:
Systems and methods for regarding a cytometry system are disclosed. The system can include a plurality lasers which are spatially separated from each other. Each laser can be assigned to a single detector. The single detector can process multiple events from each laser by digital switching of signal processing circuitry. Additional detectors can be assigned to receive light in a similar manner.
摘要:
A bacteria analyzer comprising: a sample preparing section for preparing a measurement sample from a specimen; a detector for detecting bacteria contained in the measurement sample prepared by the sample preparing section; and a controller including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations, comprising: obtaining the distribution state of bacteria detected by the detector; setting a bacteria count region according to the obtained bacteria distribution state; and counting the number of bacteria contained in the set bacteria count region is disclosed. Method for analyzing bacteria, and a computer program product for bacteria analyzer are also disclosed.