公开(公告)号：US20190314809A1

公开(公告)日：2019-10-17

申请号：US16313485

申请日：2017-06-26

Applicant: Hitachi High-Technologies Corporation

Inventor： Yoshihiro NAGAOKA ,  Taro NAKAZAWA ,  Mitsuhiro MIYAZAKI ,  Ryusuke KIMURA ,  Motohiro YAMAZAKI

IPC: B01L3/00 ,  G01N35/08

Abstract: Provided are a bubble eliminating structure and a bubble eliminating method which eliminate bubbles in a liquid by agitating the liquid, and an agitating method using the same. A first groove 114, which is an upstream bubble eliminating groove, and a second groove 131, which is a downstream bubble eliminating groove, are branched from a mixing well 13. After starting suction of the liquid from mixing well 13 into the first groove 114, suction of the liquid from the mixing well 13 into the second groove 131 is started, and after completion of discharge of the liquid from the first groove 114 into the mixing well 13, discharge of the liquid from the second groove 131 into the mixing well 13 is completed. This operation is repeated to eliminate bubbles.

公开(公告)号：US20180220944A1

公开(公告)日：2018-08-09

申请号：US15579957

申请日：2016-04-27

Applicant: Hitachi High-Technologies Corporation

Inventor： Ayano OTSUBO ,  Yoshihiro NAGAOKA ,  Taku SAKAZUME ,  Kenko UCHIDA ,  Shigenori TOGASHI

IPC: A61B5/15

Abstract: A blood collecting device collects blood in a short time after puncture without scattering the blood into the open air other than a container for collecting the blood. One of representative blood collecting devices has a container unit that includes a screw portion, a holder that holds the container unit serving as a system whose one end is closed, a puncture unit that can be attached to the container or the holder, a through-hole of the puncture unit, and a puncture unit protection member that protects the puncture unit and the container unit.

公开(公告)号：US20160016167A1

公开(公告)日：2016-01-21

申请号：US14770978

申请日：2014-01-30

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Yoshihiro NAGAOKA ,  Hisao INAMI ,  Motohiro YAMAZAKI

IPC: B01L3/00

CPC classification number: B01L3/502715 ,  B01F13/0083 ,  B01J19/00 ,  B01L3/502738 ,  B01L2200/0621 ,  B01L2300/0867 ,  B01L2300/0877 ,  B01L2400/0633

Abstract: The liquid feeding device includes a branched portion at which a fluid is branched into a main flow passage that feeds the fluid from an upstream side to a downstream side and a first flow passage being branched from the main flow passage; a narrow flow passage being provided at a terminal end portion, and has a smaller cross-sectional area than the first flow passage; and a liquid feeding mechanism which feeds the fluid to the main flow passage and the first flow passage, wherein the narrow flow passage suppresses the fluid, being fed from the main flow passage side to the first flow passage using the mechanism in the branched portion, from leaking from first flow passage, quantitatively determines fluid as a first volume by filling the first flow passage, which has the first volume, with the fluid, and feeds the quantitatively determined fluid to the main flow passage.

Abstract translation: 液体供给装置包括分支部分，在该分支部分处，流体被分支成主流道，其从上游侧向下游侧供给流体，第一流动通道从主流动通道分支; 一个窄流道设在末端部分，并且具有比第一流道更小的横截面面积; 以及液体供给机构，其将流体供给到主流路和第一流路，其中，窄流路抑制流体，使用分支部的机构从主流路侧向第一流路供给， 从第一流路泄漏，通过用流体填充具有第一体积的第一流路，将流体定量地确定为第一体积，并将定量确定的流体供给到主流路。

公开(公告)号：US20200047181A1

公开(公告)日：2020-02-13

申请号：US16609248

申请日：2018-05-11

Applicant: Hitachi High-Technologies Corporation

Inventor： Yoshihiro NAGAOKA ,  Motohiro YAMAZAKI

IPC: B01L3/00 ,  G01N35/02 ,  G01N35/08 ,  B81B3/00

Abstract: This sample processing device comprises: an analysis chip having a flow path on a lower surface side; a drive unit having a plurality of recesses on an upper surface side; an elastic film positioned between the analysis chip and the drive unit; and an air pressure control unit that switches whether the elastic film is adhered to the analysis chip side or adhered to the drive unit side. The analysis chip includes a quantitative flow path for quantifying liquid, and at least four branch flow paths branched from the quantitative flow path. The drive unit includes recesses below each of the ends of the four branch flow paths not on the quantitative flow path side, and each of the recesses communicates with the air pressure control unit.

公开(公告)号：US20160377184A1

公开(公告)日：2016-12-29

申请号：US15038895

申请日：2015-01-22

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Takaaki HARA ,  Hiroshi MORIYA ,  Ayano OTSUBO ,  Yoshihiro NAGAOKA ,  Kiyotoshi MORI ,  Shoji TOMITA

IPC: F16K3/06 ,  G01N30/26

CPC classification number: F16K3/06 ,  F16K11/0743 ,  G01N30/20 ,  G01N30/26 ,  G01N2030/202 ,  G01N2030/385

Abstract: Provided are: a flow path switching valve that reduces the pressure load in a contact surface outer peripheral section of the flow path switching valve and inhibits friction between constituent components; and a liquid chromatographic device using the flow path switching valve. The flow path switching valve is provided with a stator having a plurality of through holes and a seal having conduction grooves for causing the through holes to conduct. The seal has a first portion present vertically beneath a region comprising at least a surface of contact with the stator, and a second portion having lower rigidity than the first portion, on the outside of the first portion. Due to this configuration, it is possible to reduce the pressure load when a flow path of a liquid is switched under high-pressure conditions, and inhibit the phenomenon of friction itself.

Abstract translation: 提供：流路切换阀，其减小流路切换阀的接触面外周部的压力负荷，并且抑制构成部件之间的摩擦; 以及使用流路切换阀的液相色谱装置。 流路切换阀设置有具有多个通孔的定子和具有用于使通孔导通的导电槽的密封件。 密封件具有在第一部分的外侧上垂直地包括至少与定子接触的表面的区域和具有比第一部分低的刚性的第二部分的第一部分。 由于这种构造，当在高压条件下切换液体的流路时，可以降低压力负荷，并且可以抑制摩擦现象本身。