Source: http://www.google.com/patents/US6804984?dq=6,272,646
Timestamp: 2017-05-28 18:46:13
Document Index: 110208566

Matched Legal Cases: ['Application No. 09', '§ 120', 'Application No. 2000', '§ 119', 'Application No. 2000', '§119']

Patent US6804984 - Sheath liquid supplying apparatus, sheath liquid supplying method, and ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA sheath liquid supplying apparatus includes a syringe including a piston and a cylinder slidably accommodating the piston and a stepping motor for causing the piston to slide in the cylinder, wherein the cylinder has an injection/suction hole of a sheath liquid positioned at a distal end thereof and...http://www.google.com/patents/US6804984?utm_source=gb-gplus-sharePatent US6804984 - Sheath liquid supplying apparatus, sheath liquid supplying method, and evaluating method of sheath liquid supplying conditionAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6804984 B2Publication typeGrantApplication numberUS 10/336,789Publication dateOct 19, 2004Filing dateJan 6, 2003Priority dateAug 18, 2000Fee statusPaidAlso published asUS20020020207, US20030107725, US20030110826Publication number10336789, 336789, US 6804984 B2, US 6804984B2, US-B2-6804984, US6804984 B2, US6804984B2InventorsMasaharu ShibataOriginal AssigneeSysmex CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (12), Referenced by (2), Classifications (15), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetSheath liquid supplying apparatus, sheath liquid supplying method, and evaluating method of sheath liquid supplying condition
This application is a continuation of co-pending Application No. 09/930,967, filed on Aug. 17, 2001, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. § 120; and this application claims priority of Application No. 2000-248689 filed in Japan on Aug. 18, 2000 under 35 U.S.C. § 119.
This application is related to Japanese Patent Application No. 2000-248689 filed in Aug. 18, 2000, whose priority is claimed under 35 USC §119, the disclosure of which is incorporated by reference in its entirety.
A flow cytometer using a so-called sheath flow method has been well-known as an apparatus for analyzing particles such as a cell, blood cell, or the like in a sample. In this method, a sheath liquid is flown around a sample solution (particle-floating solution) elected from a nozzle in a sheath flow cell to form a sheath flow, whereby the sample solution can be converged into a small flow in the sheath flow cell. The converged sample solution is optically measured for analyzing particles in the sample solution. The “sheath flow” means a flow for causing particles in the particle-floating solution (sample solution) pass therethrough in a line with precision by converging the sample solution into a small flow having an outside diameter approximately same as that of the particle at the center portion of the sheath liquid that is flowing through an orifice in a laminar flow state. Analysis of various cells has been performed by using a sample solution obtained by adjusting a sample of blood or urine with a dyeing solution, hemolytic agent or reaction reagent.
FIG. 2 is a view in section taken along the line A—A in FIG. 1;
FIG. 1 is a side view showing an embodiment of a sheath liquid supplying apparatus according to the present invention and FIG. 2 is a view in section taken along the line A—A in FIG. 1.
When the ripple occurs in the sample liquid flow at the orifice portion 13 due to the fluctuation in flow velocity of the sheath liquid, the scattered light intensity from the laser beam L changes because of the difference in refractive index between the sheath liquid and the sample liquid flow, whereby the output signal from the amplifier 32 fluctuates (it is considered that the fluctuation in the output signal depends upon “each refractive index of sample liquid and sheath liquid” and “a width of ripple in sample liquid flow”).
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3831618 *Dec 22, 1972Aug 27, 1974Abbott LabApparatus for the precision metering of fluidsUS4111051 *May 21, 1976Sep 5, 1978Bodenseewerk Perkin-Elmer & Co., GmbhSampling procedure and device for flameless atomic absorption spectroscopyUS4476734 *Mar 7, 1983Oct 16, 1984International Business Machines CorporationWet needle sampler for use with a gas chromatographUS4736732 *Aug 29, 1986Apr 12, 1988Olympus Optical Co., Ltd.Endoscopic fluid changing deviceUS5182617 *Jun 29, 1990Jan 26, 1993Canon Kabushiki KaishaSample supply device and sample inspection apparatus using the deviceUS5215714May 30, 1991Jun 1, 1993Toa Medical Electronics Co., Ltd.Immunoagglutination measurement apparatusUS5374398Jan 16, 1992Dec 20, 1994Toa Medical Electronics Co., Ltd.Apparatus for analyzing particlesUS5603700Dec 27, 1993Feb 18, 1997Daneshvar; YousefSuction and injection systemUS6365106 *Jan 21, 2000Apr 2, 2002Sysmex CorporationSheath flow cell and blood analyzer using the sameJP2001059839A Title not availableJPH08201267A Title not availableJPH10260129A Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7628956 *Sep 22, 2004Dec 8, 2009Sysmex CorporationSheath flow forming device and sample analyzer provided with sameUS20050074364 *Sep 22, 2004Apr 7, 2005Katsuhiko JindoSheath flow forming device and sample analyzer provided with same* Cited by examinerClassifications U.S. Classification73/1.36, 73/864.87, 73/864.21International ClassificationG01N15/14, G01P21/02Cooperative ClassificationB01L2400/049, B01L2400/0478, B01L2200/0652, B01L2200/0636, B01L3/502784, B01L3/502776, G01N2015/1409, G01N15/1404, G01P21/025European ClassificationG01P21/02BLegal EventsDateCodeEventDescriptionApr 4, 2008FPAYFee paymentYear of fee payment: 4Apr 4, 2012FPAYFee paymentYear of fee payment: 8Apr 6, 2016FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services