Title:
SYRINGE
Document Type and Number:
WIPO Patent Application WO/2022/092138
Kind Code:
A1
Abstract:
This syringe is provided with a barrel which is formed in the shape of a tube with a distal end and a base end and which has an ejection hole provided on the distal end for ejecting a drug; a filter which is arranged on the base end side with respect to the ejection hole inside of the barrel; and a holding member which holds the filter and which has a base-end part that is arranged on the base end side with respect to the filter. In the base-end part, a flow path is provided through which the drug flows; on the base end side of the filter, a base end space is provided where the drug in the flow path enters; on the distal end side of the filter, a distal end space is provided into which the drug flows through the filter from the base end space; when viewed from the axial direction of the barrel, the area of the ejection hole is less than the area of the base end space, less than the area of the distal end space and less than the area of the flow path.
Inventors:
YAMANAKA YUJI (JP)
EGAMI KIICHI (JP)
HORITA TAIJI (JP)
OGAWA YUKIHIRO (JP)
TANIGUCHI KENSUKE (JP)
MIYAGAWA JUNKI (JP)
EGAMI KIICHI (JP)
HORITA TAIJI (JP)
OGAWA YUKIHIRO (JP)
TANIGUCHI KENSUKE (JP)
MIYAGAWA JUNKI (JP)
Application Number:
PCT/JP2021/039614
Publication Date:
May 05, 2022
Filing Date:
October 27, 2021
Export Citation:
Assignee:
TAISEI KAKO CO (JP)
CHUGAI PHARMACEUTICAL CO LTD (JP)
CHUGAI PHARMACEUTICAL CO LTD (JP)
International Classes:
A61M5/31
Foreign References:
| KR101668686B1 | 2016-10-24 | |||
| US4306554A | 1981-12-22 | |||
| US20160091399A1 | 2016-03-31 | |||
| JP2019517319A | 2019-06-24 | |||
| JP2020179783A | 2020-11-05 | |||
| JP6464430B2 | 2019-02-06 |
Attorney, Agent or Firm:
FUJIMOTO & PARTNERS (JP)
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