JP7193887B2 - ピストン - Google Patents

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Publication number
JP7193887B2
JP7193887B2 JP2021542470A JP2021542470A JP7193887B2 JP 7193887 B2 JP7193887 B2 JP 7193887B2 JP 2021542470 A JP2021542470 A JP 2021542470A JP 2021542470 A JP2021542470 A JP 2021542470A JP 7193887 B2 JP7193887 B2 JP 7193887B2
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JP
Japan
Prior art keywords
annular projection
annular
piston
syringe barrel
vertex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2021542470A
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English (en)
Japanese (ja)
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JPWO2022044340A1 (https=
Inventor
洋司 須藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikyo Seiko Ltd
Original Assignee
Daikyo Seiko Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikyo Seiko Ltd filed Critical Daikyo Seiko Ltd
Priority to JP2022019646A priority Critical patent/JP2022062227A/ja
Publication of JPWO2022044340A1 publication Critical patent/JPWO2022044340A1/ja
Application granted granted Critical
Publication of JP7193887B2 publication Critical patent/JP7193887B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31513—Piston constructions to improve sealing or sliding

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
JP2021542470A 2020-08-31 2020-08-31 ピストン Active JP7193887B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022019646A JP2022062227A (ja) 2020-08-31 2022-02-10 ピストン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/032958 WO2022044340A1 (ja) 2020-08-31 2020-08-31 ピストン

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2022019646A Division JP2022062227A (ja) 2020-08-31 2022-02-10 ピストン

Publications (2)

Publication Number Publication Date
JPWO2022044340A1 JPWO2022044340A1 (https=) 2022-03-03
JP7193887B2 true JP7193887B2 (ja) 2022-12-21

Family

ID=80355002

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2021542470A Active JP7193887B2 (ja) 2020-08-31 2020-08-31 ピストン
JP2022019646A Pending JP2022062227A (ja) 2020-08-31 2022-02-10 ピストン

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2022019646A Pending JP2022062227A (ja) 2020-08-31 2022-02-10 ピストン

Country Status (9)

Country Link
US (1) US20230293820A1 (https=)
EP (1) EP4205784A4 (https=)
JP (2) JP7193887B2 (https=)
KR (1) KR20230058099A (https=)
CN (1) CN116157169A (https=)
AU (1) AU2020465340A1 (https=)
CA (1) CA3192018A1 (https=)
TW (1) TW202224714A (https=)
WO (1) WO2022044340A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102794309B1 (ko) * 2023-05-10 2025-04-15 제이더블유생명과학 주식회사 주사기
EP4609898A1 (en) * 2024-02-28 2025-09-03 Becton, Dickinson and Company Method of manufacturing a laminated stopper, polymer blends for same and stoppers made therefrom

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895773A (en) 1956-10-22 1959-07-21 Robert K Mcconnaughey Variable diameter tensed ring piston
JP2012205931A (ja) 2012-07-26 2012-10-25 Terumo Corp シリンジ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918427B2 (ja) 1979-10-09 1984-04-27 テルモ株式会社 シリンジ用ガスケツト
US6511459B1 (en) * 2000-09-29 2003-01-28 Mallinckrodt Inc. Syringe plunger having an improved sealing ability
JP2006519070A (ja) * 2003-02-27 2006-08-24 バクスター・インターナショナル・インコーポレイテッド 注射器のためのピストンアセンブリ
JP2006181027A (ja) 2004-12-27 2006-07-13 Daikyo Seiko Ltd 注射器用ピストン
WO2008151239A2 (en) * 2007-06-04 2008-12-11 Becton, Dickinson And Company Positive displacement stopper for a pre-filled syringe
WO2014196056A1 (ja) * 2013-06-06 2014-12-11 テルモ株式会社 注射器およびプレフィルドシリンジ
WO2015150646A1 (fr) * 2014-04-02 2015-10-08 Aptar Stelmi Sas Ensemble de seringue anti-reflux
JP6478325B2 (ja) * 2015-05-08 2019-03-06 住友ゴム工業株式会社 プレフィルドシリンジ用ガスケットおよびプレフィルドシリンジ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895773A (en) 1956-10-22 1959-07-21 Robert K Mcconnaughey Variable diameter tensed ring piston
JP2012205931A (ja) 2012-07-26 2012-10-25 Terumo Corp シリンジ

Also Published As

Publication number Publication date
WO2022044340A1 (ja) 2022-03-03
EP4205784A1 (en) 2023-07-05
TW202224714A (zh) 2022-07-01
EP4205784A4 (en) 2023-10-04
CA3192018A1 (en) 2022-03-03
JPWO2022044340A1 (https=) 2022-03-03
AU2020465340A1 (en) 2023-05-04
US20230293820A1 (en) 2023-09-21
JP2022062227A (ja) 2022-04-19
KR20230058099A (ko) 2023-05-02
CN116157169A (zh) 2023-05-23
AU2020465340A9 (en) 2024-06-06

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