公开(公告)号：US10702199B2

公开(公告)日：2020-07-07

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 ,  A61B5/022 ,  A61B5/151 ,  A61B5/02 ,  A61B5/154

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：US11426721B2

公开(公告)日：2022-08-30

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: G01N35/08 ,  G01N21/05 ,  B01L3/00 ,  G01N37/00 ,  C12M1/00

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：US10364900B2

公开(公告)日：2019-07-30

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 ,  G01N30/20 ,  F16K11/074 ,  G01N30/26 ,  G01N30/38

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.

公开(公告)号：US09492821B2

公开(公告)日：2016-11-15

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 ,  B01F3/00 ,  B01J19/00 ,  B01F13/00

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

Abstract: In some examples, a liquid feeding device includes a main flow passage in which a fluid may be fed between an upstream side and a downstream side. A first flow passage may branch from the main flow passage, and may include a narrow flow passage at a terminal end portion, having a smaller cross-sectional area than the first flow passage. A liquid feeding mechanism may feed the fluid to the main flow passage and the first flow passage. The narrow flow passage may suppress the fluid from leaking from first flow passage. Thus, the liquid feeding device may quantitatively determine a first volume of the fluid by filling the first flow passage with the fluid, and subsequently feeding the quantitatively determined fluid back to the main flow passage.

Abstract translation: 在一些示例中，液体供给装置包括主流路，流体可以在上游侧和下游侧供给。 第一流路可以从主流路分支，并且在末端部可以包括具有比第一流路更小的横截面面积的窄流路。 液体供给机构可以将流体供给到主流路和第一流路。 狭窄的流动通道可以抑制流体从第一流动通道泄漏。 因此，液体供给装置可以通过用流体填充第一流路来定量地确定第一体积的流体，并且随后将定量确定的流体送回到主流动通道。