WO2022191136A1 - 薬液投与装置 - Google Patents

薬液投与装置 Download PDF

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Publication number
WO2022191136A1
WO2022191136A1 PCT/JP2022/009752 JP2022009752W WO2022191136A1 WO 2022191136 A1 WO2022191136 A1 WO 2022191136A1 JP 2022009752 W JP2022009752 W JP 2022009752W WO 2022191136 A1 WO2022191136 A1 WO 2022191136A1
Authority
WO
WIPO (PCT)
Prior art keywords
drug
administration device
plunger
plunger rod
solution administration
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.)
Ceased
Application number
PCT/JP2022/009752
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
松本二三也
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.)
Terumo Corp
Original Assignee
Terumo Corp
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 Terumo Corp filed Critical Terumo Corp
Priority to JP2023505548A priority Critical patent/JPWO2022191136A1/ja
Publication of WO2022191136A1 publication Critical patent/WO2022191136A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically

Definitions

  • such a drug delivery device includes a needle protection sleeve and a piston slidably provided in a casing, and a sleeve acting on the piston when discharging a drug solution. a shaped actuating member and a first spring acting on the actuating member.
  • FIG. 19 is an overall cross-sectional view showing a state where the medicinal-solution administration device of FIG. 18 starts to pierce the skin; 22 is an enlarged cross-sectional view showing the vicinity of the proximal end of the drug-solution administration device of FIG. 21; FIG. FIG. 22 is an overall cross-sectional view showing a state in which puncturing of the skin by the drug-solution administration device of FIG. 21 is completed; 24 is an enlarged cross-sectional view showing the vicinity of the proximal end of the drug-solution administration device of FIG. 23; FIG. FIG. 24 is an overall cross-sectional view showing another cross-section of the drug-solution administration device after puncturing of FIG.
  • the housing 12 is made of, for example, a resin material, and includes a cylindrical body 20 having a circular cross section and substantially constant outer diameter and inner diameter along the axial direction (directions of arrows A and B), and a base of the cylindrical body 20. It is composed of a sleeve body 22 accommodated on the end side (in the direction of arrow A) and an end cap 24 closing the proximal end of the cylindrical body 20 .
  • the guide ribs 34 are, for example, provided at least three or more at equal intervals along the circumferential direction of the body main body 30, and have a substantially constant thickness along the inner periphery. They are formed in the same shape so that they linearly protrude radially inward from the surface and have the same protruding length in the radial direction from the inner peripheral surface.
  • four guide ribs 34 are arranged at intervals of 90° with respect to the axial center of the main body 30, and a set of guide ribs 34 are arranged so as to face each other with the axial center of the main body 30 interposed therebetween. A case will be described.
  • the rod body 84 has a circular cross-section, and a plurality of slide grooves 92 are formed on the outer peripheral surface thereof so as to be recessed radially inward and into which the guide ribs 34 of the sleeve body 22 are inserted.
  • the slide grooves 92 are recessed, for example, in a rectangular cross-section with respect to the outer peripheral surface, and are provided at equal intervals in the circumferential direction corresponding to the number and arrangement of the guide ribs 34 .
  • four slide grooves 92 corresponding to the guide ribs 34 will be described.
  • the outer diameter D1 of the collar portion 96 of the flexible portion 86 is slightly larger than the inner diameter D2 of the main body 30 of the sleeve body 22 (D1>D2).
  • a syringe holder 130 for holding the syringe 16 is formed with a pair of protrusions 142 protruding radially outward from the outer peripheral surface. 130 is held movably along the axial direction (directions of arrows A and B) inside the cover sleeve 14 together with the syringe 16 .
  • the axial length L1 of this engaging hole 120 is formed to be greater than the axial length L2 of the outer hook 150 (L1>L2). That is, the outer hook 150 is engaged with the engagement hole 120 so as to be movable in the axial direction (directions of arrows A and B).
  • the end cap 24 that constitutes the housing 12 has the shaft portion 78 that extends axially toward the distal end side (the direction of the arrow B).
  • a plunger rod 82 accommodated in the interior of the plunger 12 so as to be movable in the axial direction (directions of arrows A and B) has a second rod hole 100 through which the shaft portion 78 is inserted.
  • the shaft portion 78 is provided with a plurality of guide walls 78a projecting radially outward and extending in the axial direction. , and a second wall portion 79b provided in the vicinity of the tip of the shaft portion 78 with a width dimension W2 widened in the width direction with respect to the first wall portion 79a.

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)
PCT/JP2022/009752 2021-03-12 2022-03-07 薬液投与装置 Ceased WO2022191136A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023505548A JPWO2022191136A1 (https=) 2021-03-12 2022-03-07

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021040764 2021-03-12
JP2021-040764 2021-03-12

Publications (1)

Publication Number Publication Date
WO2022191136A1 true WO2022191136A1 (ja) 2022-09-15

Family

ID=83226718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/009752 Ceased WO2022191136A1 (ja) 2021-03-12 2022-03-07 薬液投与装置

Country Status (2)

Country Link
JP (1) JPWO2022191136A1 (https=)
WO (1) WO2022191136A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017518791A (ja) * 2014-05-07 2017-07-13 アムジエン・インコーポレーテツド 衝撃低減要素を有する自動注入器
WO2019202128A1 (en) * 2018-04-19 2019-10-24 Sanofi Force reduction in injection devices
JP2020524529A (ja) * 2017-06-22 2020-08-20 アムジエン・インコーポレーテツド デバイス起動による衝突／衝撃の低減

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017518791A (ja) * 2014-05-07 2017-07-13 アムジエン・インコーポレーテツド 衝撃低減要素を有する自動注入器
JP2020524529A (ja) * 2017-06-22 2020-08-20 アムジエン・インコーポレーテツド デバイス起動による衝突／衝撃の低減
WO2019202128A1 (en) * 2018-04-19 2019-10-24 Sanofi Force reduction in injection devices

Also Published As

Publication number Publication date
JPWO2022191136A1 (https=) 2022-09-15

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