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WO2012110040A1 - Injecteur jetable pour injecter un liquide dans un patient - Google Patents

Injecteur jetable pour injecter un liquide dans un patient Download PDF

Info

Publication number
WO2012110040A1
WO2012110040A1 PCT/DK2012/050052 DK2012050052W WO2012110040A1 WO 2012110040 A1 WO2012110040 A1 WO 2012110040A1 DK 2012050052 W DK2012050052 W DK 2012050052W WO 2012110040 A1 WO2012110040 A1 WO 2012110040A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
proximal
container
injection
distal
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/DK2012/050052
Other languages
English (en)
Inventor
Morten Mernoe
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.)
Injector ApS
Original Assignee
Injector ApS
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 Injector ApS filed Critical Injector ApS
Publication of WO2012110040A1 publication Critical patent/WO2012110040A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/281—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule
    • A61M5/282—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule by compression of deformable ampoule or carpule wall
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/285—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened
    • A61M5/286—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened upon internal pressure increase, e.g. pierced or burst
    • 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
    • A61M2005/206—With automatic needle insertion

Definitions

  • Disposable injector for injecting a liquid into a patient
  • the present invention relates to a disposable automatic injector for injecting an injection liquid.
  • a cylindrical housing with a distal wall and a proximal wall having a proximal surface for abutting the surface of an injection site
  • an injection needle having a sharp distal end and a sharp proximal end and arranged axially displaceable in said housing through a passage in said proximal wall
  • a compressible container for containing an injection liquid and having a proximal wall portion penetrable by said sharp distal end of said needle, a compression chamber containing said container and adapted to be reduced in volume so as to compress said container to press said injection liquid into said needle, and
  • Figs. 1 - 9 are schematic cross-sectional views of a currently preferred embodiment of an injector according to the invention illustrating sequential positions of the various elements of the injector when carrying out an injection,
  • Figs. 2a-2c are schematic enlarged scale views of details of Figs. 2 and 3, an
  • Figs. 10-1 1 are schematic perspective views of some elements of the currently preferred embodiment shown in Figs. 1 -9.
  • the injector device comprises a cylindrical release housing 1 in which a spring housing 2 is arranged axially displaceable, and a skin contact housing 9 in which a plunger assembly 3 is arranged axially displaceable.
  • Skin contact housing 9 has a proximal wall with a proximal surface 9c intended for being pressed against the skin of a patient during injection of a liquid
  • a coil spring 4 is arranged in spring housing 2 such that spring 4 exerts a force on plunger 3 in the proximal direction (towards proximal surface 9c).
  • a flexible container, capsule or bladder 5 for containing an injection liquid is arranged between a pressing surface of plunger 3 and an abutment surface of a needle guide body 7 in which an injection needle 8 having sharpened opposed proximal and distal ends, 8a and 8b respectively, is received axially displaceable and guided in a passage of the guide body 7 by means of a needle guide 7b fixedly attached to needle 8.
  • the proximal end 8a of needle 8 is also received axially displaceable in a needle passage 9b of skin contact housing 9.
  • the needle passage 9b protrudes slightly from the skin contact housing proximal wall to form a distally directed protrusion 9b.
  • a rubber film or disk 6 is adhered to the outer surface of capsule 5 in the region to be penetrated by distal end 8b of needle 8.
  • the distal surface of capsule 5 is adhered to pressing surface of plunger 3 in a region around the centre line of said pressing surface.
  • Flexible snap arms 9a of skin contact housing 9 engage recesses 2c in spring housing 2 and ensure that said two housings 9 and 2 cannot move relative to one another.
  • Release housing 1 is provided with flexible release arms 1 a.
  • Spring housing 2 is provided with blocking arms 2a, and plunger 3 is provided with locking arms 3a.
  • Spring housing 2 is provided with recesses 2b
  • the blocking arms 2a ensure that the release arms 1 a cannot be pressed towards one another and thereby prevent the plunger 3 in being displaced in the proximal direction. Locking arms 3a maintain the spring 4 clamped between spring housing 2 and plunger 3 by resting on recess 2b.
  • Skin contact surface 9c of skin contact housing is provided with a not shown layer of an antiseptic substance covered by a plastic film to protect the substance during storage.
  • the first operation steps are that the injector is held by the release housing 1 by a care giver while the protective plastic film is removed from the antiseptic layer and the antiseptic is applied to the injection site by rubbing the surface 9c against the injection site surface.
  • the care giver presses the release housing 1 towards the skin housing 9 in the direction of arrow R1 while the skin contact surface 9c is pressed against the injection site surface.
  • the release housing is pressed as far as possible in the proximal direction, the release arms 1 a are freed such that they can be pressed together in the direction of arrows R2 (see Fig. 3 and Figs. 2a-2c).
  • the needle 8 will automatically be retracted from the injection site and into concealment inside the spring housing and therefore cannot by accident prick the care giver or others with the risk of infecting them.
  • the injector cannot be re-utilized, thus eliminating the risk of infecting other persons because of non-sterilisation of the needle between multiple injections with the same needle.
  • the springs 4 and 10 may be replaced by various displacement means, for instance elastically expandable elements such as rubber bands and may be arranged in many different manners as long as the described functions are achieved.

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)

Abstract

La présente invention concerne un injecteur comprenant un boîtier cylindrique avec une paroi distale et une paroi proximale ayant une surface proximale (9c) pour affleurer la surface d'un site d'injection, une aiguille d'injection (8) ayant une extrémité distale tranchante (8b) et une extrémité proximale tranchante (8a) et agencée de façon axialement déplaçable dans ledit boîtier à travers un passage (9b) dans ladite paroi proximale, un conteneur compressible (5) pour contenir un liquide d'injection et ayant une partie de paroi proximale (6) pénétrable par ladite extrémité distale tranchante (8a) de ladite aiguille (8), une chambre de compression contenant ledit conteneur (5) et adaptée pour être réduite en volume de manière à comprimer ledit conteneur (5) pour presser le liquide d'injection dans l'aiguille (8), et des moyens de déplacement (4, 10) pour éjecter et rétracter respectivement l'aiguille (8).
PCT/DK2012/050052 2011-02-15 2012-02-14 Injecteur jetable pour injecter un liquide dans un patient Ceased WO2012110040A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100098 2011-02-15
DKPA201100098 2011-02-15

Publications (1)

Publication Number Publication Date
WO2012110040A1 true WO2012110040A1 (fr) 2012-08-23

Family

ID=46671954

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2012/050052 Ceased WO2012110040A1 (fr) 2011-02-15 2012-02-14 Injecteur jetable pour injecter un liquide dans un patient

Country Status (1)

Country Link
WO (1) WO2012110040A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12048541B2 (en) 2018-06-08 2024-07-30 Smiths Medical Asd, Inc. Blood sequestration device and method
WO2024251798A1 (fr) * 2023-06-05 2024-12-12 Sanofi Dispositif d'administration de médicament

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871856A (en) * 1954-10-27 1959-02-03 Astra Ab Hypodermic syringe
GB906574A (en) * 1960-03-29 1962-09-26 Fed Minister Of Defence Injection instrument
US3605744A (en) * 1969-04-22 1971-09-20 Edward M Dwyer Injection apparatus and method of injecting
US3977401A (en) * 1975-03-25 1976-08-31 William Floyd Pike Injection apparatus
US4031889A (en) * 1975-03-25 1977-06-28 William Floyd Pike Power operated aspirating hypodermic syringe
WO2007129324A2 (fr) * 2006-05-09 2007-11-15 Gil Yigal dispositif d'injection jetable avec mÉcanisme d'auto-rÉtraction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871856A (en) * 1954-10-27 1959-02-03 Astra Ab Hypodermic syringe
GB906574A (en) * 1960-03-29 1962-09-26 Fed Minister Of Defence Injection instrument
US3605744A (en) * 1969-04-22 1971-09-20 Edward M Dwyer Injection apparatus and method of injecting
US3977401A (en) * 1975-03-25 1976-08-31 William Floyd Pike Injection apparatus
US4031889A (en) * 1975-03-25 1977-06-28 William Floyd Pike Power operated aspirating hypodermic syringe
WO2007129324A2 (fr) * 2006-05-09 2007-11-15 Gil Yigal dispositif d'injection jetable avec mÉcanisme d'auto-rÉtraction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12048541B2 (en) 2018-06-08 2024-07-30 Smiths Medical Asd, Inc. Blood sequestration device and method
WO2024251798A1 (fr) * 2023-06-05 2024-12-12 Sanofi Dispositif d'administration de médicament

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