WO2023094119A1 - Dispositif d'injection présentant au moins deux parties de coque, et procédé d'assemblage d'un tel dispositif d'injection - Google Patents

Dispositif d'injection présentant au moins deux parties de coque, et procédé d'assemblage d'un tel dispositif d'injection Download PDF

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Publication number
WO2023094119A1
WO2023094119A1 PCT/EP2022/080422 EP2022080422W WO2023094119A1 WO 2023094119 A1 WO2023094119 A1 WO 2023094119A1 EP 2022080422 W EP2022080422 W EP 2022080422W WO 2023094119 A1 WO2023094119 A1 WO 2023094119A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
shell part
injection device
shell
latching element
Prior art date
Application number
PCT/EP2022/080422
Other languages
German (de)
English (en)
Inventor
Lukas HEINIGER
Jürgen Wittmann
Original Assignee
Ypsomed Ag
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 Ypsomed Ag filed Critical Ypsomed Ag
Publication of WO2023094119A1 publication Critical patent/WO2023094119A1/fr

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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
    • 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
    • A61M5/31—Details
    • A61M5/3129—Syringe barrels
    • 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
    • A61M5/3129—Syringe barrels
    • A61M2005/3142—Modular constructions, e.g. supplied in separate pieces to be assembled by end-user
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/586—Ergonomic details therefor, e.g. specific ergonomics for left or right-handed users
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/59—Aesthetic features, e.g. distraction means to prevent fears of child patients
    • 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
    • A61M2207/00—Methods of manufacture, assembly or production

Definitions

  • Injection device with at least two shell parts and method for assembling such an injection device
  • the invention relates to an injection device for administering a product, in particular a medicament.
  • the invention also relates to a method for assembling such an injection device for administering a product.
  • Medicament includes any liquid or flowable medicinal formulation suitable for controlled administration through a means such as a cannula or hypodermic needle, for example comprising a liquid, solution, gel, or fine suspension containing one or more contains active medicinal ingredients.
  • Medicament may be a single active ingredient composition or a premixed, mixable or co-formulated composition comprising multiple active ingredients from a single container.
  • Medicament includes drugs such as peptides (e.g.
  • insulins insulin containing drugs, GLP-1 containing as well as derived or analogous preparations
  • proteins and hormones proteins and hormones, biologically derived or active substances, substances based on hormones or genes, nutritional formulations, enzymes and other substances both in solid (suspended) or liquid form, but also polysaccharides, vaccines, DNA or RNA or oligonucleotides , antibodies or parts of antibodies as well as suitable basic, auxiliary and carrier materials.
  • Injection devices are known from the prior art. In principle, an injection device can be used for the administration of a drug.
  • an injection device that has a consistent, proven, safe and specified technical design with a consistent housing, with additional add-on parts, in particular shell parts, which are firmly, in particular axially and rotationally fixed and non-detachably connected to the housing. Shape, feel, surface topography and ergonomics of the injection device can still be adjusted during the production of the injection device, so that the needs of the medical indication can be taken into account in a simple and inexpensive manner.
  • Injection devices are known from WO2016/179713 A1 and WO2018/053657 A1, which each have a housing to which differentiation shells can be attached.
  • a disadvantage of these add-on parts, in particular shell parts, is that the shell parts cannot simply be attached to the housing, since the shell parts can be deformed when they are attached to the housing.
  • the object is achieved with the injection device according to claim 1 and the method according to claim 10.
  • distal refers to the direction in which the injection needle of the injection device is pointing.
  • proximal refers to the direction opposite to the distal direction.
  • the invention is based on a device for administering a product, namely an injection device with a longitudinal axis (L).
  • the injection device according to the invention can be designed as an injection pen or as an auto-injector.
  • a pre-filled product container in particular a pre-filled medication container, is provided in each case.
  • a carpule with a detachable needle unit for dispensing the medicament or a ready-to-use syringe for dispensing the medicament is particularly preferably provided.
  • other injection devices for example needleless injection devices, pumps, patch injectors or inhalers can be provided. All injection devices according to the invention have in common that they are suitable for administering a medicament.
  • the needle unit of an injection pen can have a non-detachable injection needle at the distal end and a connecting element at the proximal end in order to detachably connect the needle unit directly or indirectly to the cartridge of the injection pen.
  • a part of the injection needle that protrudes in the proximal direction can be pierced into a septum of the carpule in order to form a fluid connection between the needle unit and the carpule.
  • the used needle unit can be removed from the injection pen after each injection, and an unused needle unit can be attached for a further injection.
  • the pre-filled syringe has an injection needle which is permanently connected to the pre-filled syringe and via which a medicament contained in the pre-filled syringe can be dispensed.
  • the injection needle is enclosed in a protective needle cap attached to the pre-filled syringe and sealed in a sterile manner with respect to the environment.
  • protective needle caps can be designed, for example, as a so-called soft needle shield (SNS) or as a rigid needle shield (RNS).
  • a soft needle shield has several parts, in particular an elastomeric cap-shaped part and a sleeve-shaped part made of a solid, i.e. non-elastomeric plastic, which receives the elastomeric part and is essentially permanently connected thereto.
  • a cap-shaped pull-off element in the form of a cap can preferably be used for this purpose be provided, which is attached to the distal end of the injection device and closes the distal end of the injection device, the needle protective cap attached to the pre-filled syringe is also pulled off, ie it is removed from the pre-filled syringe when the cap is removed.
  • the needle protective cap remains in the cap.
  • the cap has engagement elements which can be brought into engagement with the needle protective cap or are already engaged when the cap is pulled off. As the cap pull-off movement continues, the engaging members take the needle cap with them, causing it to be pulled off the pre-filled syringe.
  • the injection device according to the invention can preferably be designed as an auto-injector which has a mechanism which allows the product to be poured out automatically, such as, for example, B. by an energy store, in particular by a mechanical or electrical energy store, and optionally an automatic insertion and / or withdrawal of the injection needle.
  • an auto-injector the power to dispense the product is provided by the energy store, such as the spring or the motor.
  • the injection device according to the invention can alternatively be designed as a manual injection device, namely as an injection pen, i. H. that the force for dispensing the product by muscle power, such. B. done by the hand of the user himself.
  • the product container in particular the ready-to-use syringe or the carpule, can have a piston which is slidably mounted in the product container.
  • the piston can be moved in a dispensing direction, in particular in the distal direction, by means of a drive device, e.g. a piston rod of the injection device, in order to dispense a product from the product container.
  • the drive device can be driven by a mechanical or electrical energy store, e.g. a spring, a motor or by hand.
  • the drive device can include a dosing device which enables a specific dose of the product present in the product container to be set. Alternatively, the drive device can have no dosing device in order to deliver a dose that has already been set.
  • the injection device can be designed as a reusable or disposable injection device.
  • the injection device according to the invention comprises a housing.
  • the housing can be designed to at least partially accommodate the product container.
  • the housing can be designed to at least partially accommodate a drive device.
  • the drive device can act on the piston while the product is being dispensed in order to dispense a product, in particular a medicament.
  • the housing of the injection device according to the invention can also comprise another part of the injection device or be provided as an addition to the injection device.
  • the housing is preferably sleeve-shaped and/or cylindrical.
  • the housing includes an outer and an inner surface.
  • the injection device according to the invention also comprises at least two add-on parts, in particular at least two shell parts or differentiation shells.
  • the shell parts are preferably designed like a housing.
  • the shell parts include an outer and an inner surface.
  • the shell parts can be made of plastic be. Alternatively, the shell parts can be made of a different material.
  • the shell parts can be attached or attached to the outer surface of the housing.
  • the injection device can comprise exactly two shell parts, in particular housing-like shell parts, which are identical.
  • the shell parts are designed as half shells.
  • the two half-shells complement each other to form a cylinder jacket, preferably circular-cylindrical when they are attached to the housing.
  • the half-shells are approximately semicircular in cross-section, with the two half-shells being able to complement one another in cross-section to form a closed circumference, preferably a circle.
  • the two half-shells can also encompass only part of the housing of the injection device according to the invention or have a different shape.
  • the injection device can comprise more than two, in particular housing-like, shell parts which are identical.
  • the use of identical shell parts reduces the manufacturing costs.
  • the more than two shell parts can completely or only partially enclose the housing of the injection device according to the invention.
  • the shell parts can be identical on the inner surface and different on the outer surface.
  • one shell part can have one or more ribs on the outer surface for better holding of the injection device and no rib can be provided on the outer surface of the other switching part.
  • the entire configuration of the at least two shell parts can be different, provided that the attachment of the shell parts to the housing is not impaired.
  • one shell part can have an opening as a window for displaying the product container or for displaying the course of the product distribution, with the other shell part having no such opening.
  • the at least two shell parts can each have a shadow gap profile so that the at least two shell parts form at least one shadow gap when the at least two shell parts are attached, fastened or mounted on the outer surface of the housing of the injection device.
  • the shadow gap profile can be designed as a shadow gap groove or as a shadow gap rib.
  • the shadow gap rib may engage the shadow gap groove to form a shadow gap.
  • the shadow joint profile is preferably provided on the at least two shell parts on the corresponding shell edges. The shadow gap serves to compensate for a production-related gap or intermediate space between the at least two shell parts attached, fastened or mounted on the outer surface of the housing of the injection device.
  • Fastening elements are provided on the shell parts and on the housing for attaching, fastening or mounting the shell parts to the outer surface of the housing of the injection device.
  • the Fastening elements can be designed as grooves with undercuts, dovetail ribs, locking element, counter-locking element or element with a guide and/or a recess and/or a chamfer.
  • the undercut grooves and dovetail ribs may extend transversely to the longitudinal axis (L) of the injector.
  • the locking element, the counter-locking element or the element with the guide and/or the recess and/or the chamfer can preferably extend transversely to the longitudinal axis (L) of the injection device. Transverse to the longitudinal axis (L) means exactly 90 degrees to the longitudinal axis (L) of the injector or approximately 90 degrees to the longitudinal axis (L) of the injector.
  • grooves with undercuts or dovetail ribs are provided on the at least two shell parts or on the housing and corresponding dovetail ribs or corresponding grooves with undercuts on the at least two shell parts or on the housing for attaching, fastening or mounting the shell parts to the outer surface of the housing of the injection device .
  • the respective dovetail ribs can be inserted into the respective undercut grooves to radially and axially fasten or hold the at least two shell parts relative to the housing.
  • the combination of grooves with undercuts and dovetail ribs is preferably a dovetail guide.
  • a shell part preferably has the latching element, which can latch into a corresponding counter-latching element provided on the housing.
  • the element with the guide and/or the recess and/or the chamfer is preferably provided on the other shell part, wherein the latching element of one shell part and the element of the other shell part can be arranged one above the other in the radial direction and the element of the other shell part is shaped in this way is that when the at least two shell parts are attached to the housing, it is possible for the latching element of one shell part to latch with the corresponding mating latching element of the housing and the latching element of one shell part is prevented from latching out of the mating latching element of the housing when the at least two shell parts are on the housing are attached.
  • the guide and/or the recess and/or the chamfer of the element of the other shell part serve to ensure that one and/or the other shell part is not deformed when attaching, fastening or assembling one and the other shell part to the housing of the injection device when the latching element of one shell part collides with the element of the other shell part and/or comes into abutting contact.
  • the fastening elements of the at least two shell parts are arranged on the inner surface of the shell parts.
  • the fastening elements of the at least two shell parts are particularly preferably provided on the corresponding shell edges.
  • the fastening elements of the housing are provided on the outer surface.
  • the locking element of one shell part can be designed as a snap arm, in particular as an elastic snap arm.
  • the snap arm preferably extends transversely to the longitudinal axis (L) of the injector.
  • the element with the guide and/or the recess and/or the chamfer of the other shell part can be designed as a rib with the guide and/or the recess and/or the chamfer.
  • the rib with the guide or the recess or the chamfer preferably extends transversely to the longitudinal axis (L) of the injection device.
  • One and/or the other shell part can be easily attached or assembled to the housing of the injection device.
  • One and/or the other shell part can be attached, fastened or mounted to the housing by means of a relative movement, in particular a relative pressure movement transversely to the longitudinal axis (L) of the injection device.
  • a relative movement in particular a relative pressure movement transversely to the longitudinal axis (L) of the injection device.
  • one and/or the other shell part can be attached, fastened or mounted to the housing via a snap connection or latching connection.
  • the element can come into abutting contact with the guide and/or the recess and/or the chamfer of the other shell part, in particular radial abutting contact with the latching element of one shell part, in order to ensure that the latching element of one shell part disengages from the counter-latching element of the housing prevent when an external force acts on at least one shell part.
  • Prevent means complete prevention and partial prevention.
  • the at least two shell parts remain fastened or attached to the housing.
  • the element with the guide and/or the recess and/or the chamfer of the other shell part and the latching element of the one shell part can be spaced apart when the two shell parts are attached, fastened or assembled to the housing. The result of this is that the at least two shell parts can be attached, fastened or assembled to the housing of the injection device easily and without deforming one and/or the other shell part.
  • the guide and/or the recess and/or the chamfer of the element, in particular of the rib can preferably be of symmetrical, circular, oval or elongate form.
  • the guide and/or the recess and/or the chamfer of the element, in particular of the rib can also have a different shape or be shaped differently.
  • the element, in particular the rib can protrude into the interior of the other shell part.
  • the guide or the recess or the chamfer of the element, in particular the rib can also preferably protrude into the interior of the other shell part.
  • an edge of the guide and/or the recess and/or the chamfer of the element, in particular the rib of the other shell part can come into abutting contact, in particular radial abutting contact, with the latching element of one shell part in order to prevent the latching element of the one To prevent shell part from the counter-locking element of the housing when an external force acts on at least one shell part.
  • the edge of the guide and/or the recess and/or the chamfer of the element, in particular the rib of the other shell part, and the locking element of the one shell part can be arranged one above the other in the radial direction.
  • the latching element of one shell part latch or snap with the corresponding mating latching element of the housing when the at least shell parts are attached to the housing.
  • the locking element of one shell part is prevented from disengaging from the counter-locking element of the housing when the at least two shell parts are attached to the housing.
  • the counter-locking element of the housing can be designed as a depression and/or as a web.
  • the counter-locking element of the housing can be designed or shaped differently, insofar as locking or snapping with the locking element of one shell part is possible.
  • the indentation and/or the web preferably extend parallel to the longitudinal axis (L) of the injection device. Parallel to the longitudinal axis (L) means exactly or approximately parallel to the longitudinal axis (L) to the longitudinal axis (L) of the injector.
  • the latching element and the counter-latching element can preferably form a latching connection or a snap connection. In alternative embodiments, other connections can also be provided between the latching element and the counter-latching element.
  • the latching element of one shell part can have a sloping surface, in particular a sloping side surface.
  • the sloping surface, in particular the sloping side surface of the locking element prevents entanglement between different locking elements during assembly. If different locking elements collide with each other, the different locking elements can deflect in the radial direction and/or slide past one another due to the inclined surface, in particular the inclined side surface. This ensures a simple attachment or assembly of the at least two shell parts to the outer surface of the housing of the injection device.
  • a housing is provided in order to assemble an injection device according to the invention. Thereafter, a shell part is pushed onto an outer surface of the housing and fixed. Thereafter, one shell part is undetachably secured on the outer surface of the housing by pushing on and fastening another shell part on the outer surface of the housing.
  • the at least two shell parts are firmly, in particular axially and rotationally fixed and non-detachably connected to the housing.
  • an injection device according to the invention is assembled by providing a housing.
  • a shell part is then pushed onto an outer surface of the housing and pre-positioned. Thereafter another shell part is pushed onto the outer surface of the housing and pre-positioned. Then one and the other shell part are permanently secured on the outer surface of the housing by an external force, in particular a radially inward and/or transverse to the longitudinal axis (L) force acting on one and/or the other shell part.
  • the at least two shell parts are firmly, in particular axially and rotationally fixed and non-detachably connected to the housing.
  • one or the other shell part with an element with a guide and/or a recess and/or a chamfer should have a specific orientation when being attached, fastened or mounted on the outer surface of the housing.
  • the guide and/or the recess and/or the chamfer of the element are particularly preferably inclined by 45 degrees or approximately 45 degrees with respect to the outer surface of the housing of the injection device.
  • the element is particularly preferably designed as a rib.
  • FIG. 1 exploded view of an injection device according to a particularly preferred first embodiment of the invention.
  • FIGS 2a-2d exploded views of a cap (9) and a shell cap (8) of the injection device of Figure 1.
  • FIG. 3 shows the injection device from FIG. 1 in a delivery state, FIG. 3 being a sectional view running through the longitudinal axis (L) of the injection device.
  • FIGS. 4a-4b Detailed view of the other shell part (2a) according to the injection device from FIG. 1 and corresponding cross-sectional view of this embodiment, with one and the other shell part (2a, 2b) being visible.
  • FIGS 5a-5b Detailed view of the other shell part (2a) with a second embodiment of the invention and corresponding cross-sectional view of this embodiment, with one and the other shell part (2a, 2b) being visible.
  • FIGS 6a-6b Detailed view of the other shell part (2a) with a third embodiment of the invention and corresponding cross-sectional view of this embodiment, with one and the other shell part (2a, 2b) being visible.
  • FIG. 7 Detailed view of a preferred latching element (5) according to the injection device from FIG.
  • the injection device according to the invention can be designed as an auto-injector according to FIGS.
  • the injection device according to the invention can alternatively be used, for example, as an injection pen, needle-free injection devices, pumps, patch injectors or inhalers be trained. All injection devices according to the invention have in common that they are suitable for administering a product, in particular a medicament.
  • the injection device according to the invention for dispensing a product, in particular a medicament, with a longitudinal axis (L) comprises a housing (1).
  • the housing (1) can at least partially comprise a product container and/or a drive device and/or a dosing device.
  • the housing (1) can preferably be sleeve-shaped and/or cylindrical.
  • the housing (1) has an outer and an inner surface.
  • the injection device according to the invention comprises at least two, in particular exactly two, shell parts (2a, 2b).
  • the two shell parts (2a, 2b) are designed as half shells.
  • the two shell parts (2a, 2b) have an outer and an inner surface.
  • the two shell parts (2a, 2b) are of identical design.
  • the outer and/or the inner surface of the two shell parts (2a, 2b) can be designed differently.
  • several ribs are provided on the outer surfaces of the shell parts (2a, 2b) to better hold the injection device and openings are provided as windows to display the product container or the course of the product distribution.
  • more than exactly two shell parts (2a, 2b) can also be provided.
  • Fastening elements are provided on the two shell parts (2a, 2b) and on the housing (1) for attaching, fastening or mounting the two shell parts (2a, 2b) to the outer surface of the housing (1) of the injection device.
  • the housing (1) has grooves with undercuts (3) and the two shell parts (2a, 2b) have dovetail ribs (4).
  • the grooves with undercuts (3) of the housing (1) and the dovetail ribs (4) of the shell parts (2a, 2b) extend transversely to the longitudinal axis (L) of the injection device.
  • the corresponding dovetail ribs (4) of the shell parts (2a, 2b) are pushed into the corresponding grooves with undercuts (3) of the housing (1) to hold the two shell parts (2a , 2b) in the radial and axial directions relative to the housing (1).
  • the two shell parts (2a, 2b) can have the grooves with undercuts (3) and the housing (1) can have the dovetail ribs (4).
  • the injection device according to the invention has a latching element (Figure 7; 5), a counter-latching element (6) and an element ( Figures 4a, 5a and 6a; 7; 7';7") with a guide and/or a recess and/or a Chamfer (7a; 7a';7a”).
  • the latching element (5), the counter-latching element (6) or the element (7; 7';7'') with the guide and/or the recess and/or the chamfer (7a; 7a';7a'') extend transversely to the longitudinal axis (L) of the injection device.
  • One shell part (2b) has the latching element (5) which can latch into the corresponding counter-latching element (6) provided on the housing (1).
  • An element (7; 7';7") with the guide and/or the recess and/or the chamfer (7a; 7a';7a”) is provided on the other shell part (2a), the latching element (5) of the a shell part (2b) and the element (7; 7';7") of the other shell part (2a) can be arranged one above the other in the radial direction and the element (7; 7';7") of the other shell part (2a) is shaped in this way that when the two shell parts (2a, 2b) are attached to the housing (1), it is possible for the latching element (5) of one shell part (2b) to latch with the corresponding counter-latching element (6) of the housing (1) and for the latching element to disengage (5) of one shell part (2b) from the counter-locking element (6) of the housing (1) when the two shell parts (2a, 2b) are attached to the housing (1).
  • the locking element (5), the dovetail ribs (4) and the element (7; 7'; 7") with the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the two Shell parts (2a, 2b) can be provided on the inner surface thereof and on the shell edges of the respective shell parts (2a, 2b).
  • the grooves with undercuts (3) and the counter-locking element (6) of the housing (1) can preferably be arranged on its outer surface.
  • the locking element (5) of one shell part (2a) can be designed as an elastic snap arm (5).
  • the locking element (5), in particular the elastic snap arm (5) of one shell part (2b), can have a sloping surface (5a), in particular a sloping side surface, in order to prevent different locking elements (5) from becoming entangled during fastening or assembly.
  • the counter-locking element (6) of the housing (1) can be designed as a recess or a web (6) ( Figures 1 or 4b), so that between the snap arm (5) of one shell part (2b) and the recess or the web (6) of the housing (1) during and/or after the attachment, attachment or assembly of the two shell parts (2a, 2b) to the outer surface of the housing (1) of the injection device a snap connection can be made and/or is present.
  • the element (7; 7'; 7" can be designed as a rib (7; 7'; 7").
  • the rib (7; 7'; 7") includes the guide and/or the recess and/or the chamfer (7a; 7a'; 7a").
  • the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the rib can preferably be symmetrical, circular, oval-shaped or elongated. Other shapes or configurations can be envisaged.
  • the rib (7; 7'; 7") and the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the rib are on the inner surface of one or the other shell part (2a, 2b ) provided and protrude into the interior of one or the other shell part (2a, 2b).
  • One and/or the other shell part (2a, 2b) can be attached to the housing (1) by means of a relative movement, in particular a relative pressure movement transversely to the longitudinal axis (L) of the injection device, fastened or installed.
  • the elastic snap arm of one shell part (2b) snaps or engages with the indentation and/or the web (6) of the housing (1).
  • the rib (7; 7'; 7") with the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the other shell part (2a), in particular an edge of the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the rib (7; 7'; 7") of the other shell part (2a) can come into abutting contact, in particular radial abutting contact, with the elastic snap arm of one shell part (2b ) to prevent the elastic snap arm of one shell part (2b) from disengaging from the recess and/or the web (6) of the housing (1) when an external force acts on at least one shell part (2a, 2b).
  • the rib (7; 7'; 7") with the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the other shell part (2a) and the elastic snap arm (5) of the one Shell part (2b) to be spaced apart when attaching the two shell parts (2a, 2b) to the housing (1).
  • this ensures that the two shell parts (2a, 2b) remain latched or snapped together in the event of an impact with the ground and, on the other hand, that the two shell parts (2a, 2b) are simply attached to the housing (1) of the injection device and without deformation of one (2b) and/or the other shell part (2a) can be attached.
  • an edge of the guide and/or the recess and/or the chamfer (7a; 7a'; 7a") of the element (7; 7'; 7"), in particular the rib (7; 7'; 7" )) of the other shell part (2a) can come into abutting contact, in particular radial abutting contact, with the latching element (5), in particular the elastic snap arm (5) of one shell part (2b), in order to prevent the latching element (5), in particular the elastic snap arm (5) of one shell part (2b) from the counter-locking element (6), in particular the recess and/or the web (6) of the housing, when an external force acts on at least one shell part (2a, 2b).
  • the injection device according to the invention can be designed as an auto-injector according to FIGS. 1 and 3, the auto-injector comprising a cap (9) at the distal end for removing a protective needle cap attached to the product container, in particular to a pre-filled syringe.
  • the cap (9) comprises engagement members which can be brought into engagement with the needle protective cap when the cap (9) is pulled off, in order to take the needle protective cap with it when the cap (9) continues to be pulled off.
  • a shell cap (8) can be attached to the cap (9) in order to better meet special and individual requirements regarding the shape, feel, surface topography and ergonomics of the injection device.
  • the shell cap (8) can be made of plastic.
  • the shell cap (8) can be made of a different material.
  • the shell cap (8) comprises an inner and an outer surface, wherein the shell cap (8) can be attached, fastened or mounted to an outer surface of the cap (9).
  • the outer surface of the shell cap (8) can preferably have one or more ribs in order to better pull the cap (9) off the injection device via the shell cap (8) which is connected in an axially and rotationally fixed manner.
  • the shell cap (8) can comprise one or more guide ribs (8a) which engage with one or more guide grooves (9a) provided on the cap (9) in order to ensure a non-rotatable connection between the cap (9) and the cup cap (8).
  • the one or more guide ribs can be attached to the cap (9) and the one or more guide ribs can be attached to the cup cap (8).
  • an additional non-rotatable connection between the cap (9) and the shell cap (8) can preferably be provided, with a cap recess (9c) on the cap (9) and a shell projection (8c) on the shell cap (8) or alternatively on the Cap (9) has a projection and the shell cap (8) has a recess.
  • one or more snap ribs (8b) on the shell cap (8) and one or more snap grooves (9b) on the cap (9) are provided to form an axially fixed connection between the cap (9) and the shell cap (8).
  • the one or more snap grooves can be attached to the shell cap (8) and the one or more snap ribs can be attached to the cap (9).
  • the cap (9) is pushed or introduced into the shell cap (8) by means of a guide rib and guide groove until the snap rib (8b) of the shell cap (8) snapped with the snap groove (9b) of the cap (9).
  • the device may include another shell member, such as a hemispherical shell member, attached, attached or mounted to the proximal end of the injection device; to better respond to special and individual requests regarding the shape, feel, surface topography and ergonomics of the injection device.
  • This shell part can be attached, fixed or mounted on the housing of the injection device or on a part of the injection device that is fixed to the housing, in particular to a part of the injection device that is axially and rotationally fixed relative to the housing.
  • the connection can be designed as a snap and/or latching and/or rotary and/or bayonet connection.
  • This shell part is attached or connected in an axially and rotationally fixed manner to the housing or to the part of the injection device that is fixed to the housing, in particular to the part of the injection device that is axially and rotationally fixed relative to the housing.

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  • 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

L'invention concerne un dispositif d'injection pour administrer un produit, en particulier un médicament, et un procédé d'assemblage d'un tel dispositif d'injection pour l'administration d'un produit. Le dispositif d'injection comprend un boîtier (1) et au moins deux parties de coque (2a, 2b) qui peuvent être fixées à la surface extérieure du boîtier. Les au moins deux parties de coque (2a, 2b) sont reliées de manière permanente et non amovible au boîtier (1).
PCT/EP2022/080422 2021-11-29 2022-11-01 Dispositif d'injection présentant au moins deux parties de coque, et procédé d'assemblage d'un tel dispositif d'injection WO2023094119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH070620/2021A CH719185A2 (de) 2021-11-29 2021-11-29 Injektionsvorrichtung mit mindestens zwei Schalenteilen und Verfahren zum Montieren einer solchen Injektionsvorrichtung.
CHCH070620/2021 2021-11-29

Publications (1)

Publication Number Publication Date
WO2023094119A1 true WO2023094119A1 (fr) 2023-06-01

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PCT/EP2022/080422 WO2023094119A1 (fr) 2021-11-29 2022-11-01 Dispositif d'injection présentant au moins deux parties de coque, et procédé d'assemblage d'un tel dispositif d'injection

Country Status (2)

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CH (1) CH719185A2 (fr)
WO (1) WO2023094119A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016179713A1 (fr) 2015-05-13 2016-11-17 Tecpharma Licensing Ag Dispositif d'injection adaptable
WO2018053657A1 (fr) 2016-09-21 2018-03-29 Tecpharma Licensing Ag Capuchon à tirer de protection d'aiguille pour dispositif d'injection
WO2021160540A1 (fr) 2020-02-11 2021-08-19 Ypsomed Ag Auto-injecteur équipé d'un manchon de protection d'aiguille

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016179713A1 (fr) 2015-05-13 2016-11-17 Tecpharma Licensing Ag Dispositif d'injection adaptable
US20180126083A1 (en) * 2015-05-13 2018-05-10 Tecpharma Licensing Ag Adjustable injection device
WO2018053657A1 (fr) 2016-09-21 2018-03-29 Tecpharma Licensing Ag Capuchon à tirer de protection d'aiguille pour dispositif d'injection
US20190209786A1 (en) * 2016-09-21 2019-07-11 Tecpharma Licensing Ag Detachable needle protection cap for injection devices
WO2021160540A1 (fr) 2020-02-11 2021-08-19 Ypsomed Ag Auto-injecteur équipé d'un manchon de protection d'aiguille

Also Published As

Publication number Publication date
CH719185A2 (de) 2023-06-15

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