Title:
FLUID DISPENSING DEVICE IN MICROCHANNEL AND MICROCHANNEL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/120648
Kind Code:
A1
Abstract:
[Problem] To provide: a fluid dispensing device for which the number of branching channels is not restricted; and a microchannel device having said dispensing device. [Solution] A dispensing device 100 comprises: dispensing channels 5 which branch off from a main channel 3; and discharge paths at the end of the dispensing channels. First intra-channel resistance parts 8 are provided near branching positions 31, 32 where the dispensing channels 5 of the main channel 3 are formed, and are further downstream than the branching positions. Second intra-channel resistance parts 9 are provided near the confluence positions 41 of the discharge paths. The burst pressure of each first intra-channel resistance part is greater than the pressure generated by the channel resistance until the fluid reaches a second intra-channel resistance part from a branching position. The burst pressure of each second intra-channel resistance part is greater than the sum of the burst pressure of a first intra-channel resistance part, the pressure generated by the channel resistance until the fluid reaches the sequentially next first-intra-channel resistance part from said first-intra-channel resistance part, and the pressure generated by the channel resistance until the fluid reaches the sequentially next second-intra-channel resistance part from the sequentially next branching-position. The microchannel device is provided with said dispensing device.
Inventors:
SHIBATA TAKAYUKI (JP)
NATSUHARA DAIGO (JP)
OKAMOTO SHUNYA (JP)
NAGAI MOETO (JP)
NATSUHARA DAIGO (JP)
OKAMOTO SHUNYA (JP)
NAGAI MOETO (JP)
Application Number:
PCT/JP2022/047386
Publication Date:
June 29, 2023
Filing Date:
December 22, 2022
Export Citation:
Assignee:
NATIONAL UNIV CORPORATION TOYOHASHI UNIV OF TECHNOLOGY (JP)
International Classes:
G01N35/08; B01J19/00; B81B1/00; G01N37/00
Domestic Patent References:
| WO2019082902A1 | 2019-05-02 |
Foreign References:
| JP2008281500A | 2008-11-20 | |||
| JP2010057403A | 2010-03-18 | |||
| JP2009284769A | 2009-12-10 | |||
| JP2022080026A | 2022-05-27 |
Other References:
NATSUHARA DAIGO, KEISUKE TAKISHITA, AZUSA KAGE, MOETO NAGAI, HIROTAKA KANUKA, TAKAYUKI SHIBATA: "Development of Chip-Based Microfluidic Device for Diagnosis of Arbovirus Infections ― Design Optimization of Microfluidic Channels for Sample Mixing and Dispensing", PROCEEDINGS OF THE 2018 JAPAN SOCIETY FOR PRECISION ENGINEERING AUTUMN MEETING. G02-12., 1 January 2018 (2018-01-01), pages 772 - 773, XP093073697, Retrieved from the Internet [retrieved on 20230815]
Attorney, Agent or Firm:
IKAWA Hirofumi et al. (JP)
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