EP2129414A1 - Dispositif d'injection à systèmes de sécurité anti-déclenchement - Google Patents

Dispositif d'injection à systèmes de sécurité anti-déclenchement

Info

Publication number
EP2129414A1
EP2129414A1 EP08718194A EP08718194A EP2129414A1 EP 2129414 A1 EP2129414 A1 EP 2129414A1 EP 08718194 A EP08718194 A EP 08718194A EP 08718194 A EP08718194 A EP 08718194A EP 2129414 A1 EP2129414 A1 EP 2129414A1
Authority
EP
European Patent Office
Prior art keywords
movement
securing
blocking
sleeve
injection device
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.)
Withdrawn
Application number
EP08718194A
Other languages
German (de)
English (en)
Inventor
Markus Bollenbach
Ulrich Moser
Jürg HIRSCHEL
Céline KÄNEL
Daniel Künzli
Ursina Streit
Markus Tschirren
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.)
Tecpharma Licensing AG
Original Assignee
Tecpharma Licensing 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
Priority claimed from DE102007013837A external-priority patent/DE102007013837A1/de
Priority claimed from DE102007013838A external-priority patent/DE102007013838A1/de
Application filed by Tecpharma Licensing AG filed Critical Tecpharma Licensing AG
Publication of EP2129414A1 publication Critical patent/EP2129414A1/fr
Withdrawn legal-status Critical Current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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2006—Having specific accessories
    • A61M2005/2013—Having specific accessories triggering of discharging means by contact of injector with patient body
    • 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
    • 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
    • A61M2005/2073—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically preventing premature release, e.g. by making use of a safety lock
    • 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
    • A61M2205/581—Means for facilitating use, e.g. by people with impaired vision by audible feedback
    • 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
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31566—Means improving security or handling thereof
    • A61M5/3157—Means providing feedback signals when administration is completed
    • 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
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • A61M5/3204—Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices
    • 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
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means

Definitions

  • the invention relates to an injection device, in particular an auto-injector for administering a product.
  • the product may be a preferably liquid drug, e.g. an insulin, growth hormone or the like.
  • the injection device may be such as to allow manual piercing of a needle and automatic dispensing of the product.
  • the injection device is an autoinjector, which after triggering allows automatic needle insertion and automatic dispensing of the product.
  • the auto-injector may cause automatic retraction of the needle after injection or require manual withdrawal of the needle.
  • Injection devices are known from the prior art, which have relatively movable parts. These parts can be secured relative to each other with a blocking element, wherein a release of the blocking element allows a relative movement of the two parts to each other.
  • a relative movement of the two parts to each other should still be avoided, it may be due to various circumstances, such. Vibrations, unintentionally applied forces, etc., come to a release of the blockage between the two parts. This can result in negative consequences, such as an unintentionally triggered product distribution result.
  • the invention is based on a device for administering a product, in particular of an injection device, preferably designed as an autoinjector.
  • the device comprises a first element and a second element which is movable relative to the first element, in particular rotatable or preferably axially movable or a combination of these movements.
  • First and second elements may abut each other or slide against each other in a movement relative to each other.
  • the first and second elements are at least adjacent.
  • the first member and / or the second member may be sleeve-shaped, wherein one of the first member and the second member may be disposed within the other of the first member and the second member. It is possible that the two elements are arranged concentrically to each other.
  • a sleeve shape does not necessarily require a closed tubular shape but may, for example, have one or a plurality of apertures and / or webs.
  • the injection device may comprise a blocking element which is movable from a blocking position in which it blocks movement between the first element and the second element to an unlocked position in which it releases the movement between the first element and the second element.
  • the blocking element may be a separate part, e.g. a cam, a bolt, a ball, or a member formed on one of first member and second member, e.g. be integrally formed, part.
  • the blocking element may be elastically supported, such as e.g. be formed by means of an elastic arm on the first element or the second element.
  • the blocking element may be arranged such that it tends to move out of the locking engagement or to remain in the locking engagement, wherein it is preferred that no later than a relative displacement between the first element and the second element, the blocking element is movable out of the locking engagement.
  • the blocking element may for this purpose have a shape such that it is pressed with a relative displacement between the first element and the second element of the locking engagement and thus occupies the unlocked position.
  • the blocking element can be moved out of the blocking position with a movement directed transversely to the longitudinal direction of the injection device into the unlocked position.
  • a movement may, for example, a circumferentially directed movement or in Radial direction, such as to a center or longitudinal axis of the injection device directed towards or directed away from the central or longitudinal axis movement.
  • the movement may be a linear movement or preferably a pivoting or rotating movement.
  • the device according to the invention may particularly preferably have a securing element which, from a securing position in which it blocks the blocking element from moving from the blocking position to the unlocked position, into an unlocked position in which it releases the movement of the blocking element into the unlocked position allows, is movable.
  • the securing element In the securing position, the securing element can hold the blocking element in its blocking position, so that movement between the first element and the second element is blocked by means of the blocking element.
  • locking elements can be relatively weak or filigree formed in an injection device, whereby the size of the injection device decreases, and that the reliability of the injection device is increased. A buyer or user will find the injection device more appealing, as it appears less clunky to him.
  • first element and the second element may be biased by a biased spring for relative movement, so that without a blocking element
  • Injection devices in particular in auto-injectors, eg for the Product discharge or piercing can be biased with a relatively high force
  • the locking elements must be made relatively stable, so that despite the relatively high force, the locking element remains in locking engagement. This also increases the switching forces, ie the forces necessary to release the locking engagement.
  • the blocking element can be of finer construction, since in its securing position it holds the blocking element securely in the locking engagement. Furthermore, the switching forces can be reduced. In the locking engagement or in the blocking position, the blocking element engages in at least one of the first element or the second element.
  • the securing element blocks the blocking element in the securing position and thus prevents it from moving from the blocking position to the unlocked position.
  • the securing element is arranged in the direction of movement, in which the blocking element can move, when the securing element is moved out of the securing position.
  • the securing element can perform a rotational movement or an axial movement, with which it is movable from the securing position to the unlocked position.
  • the rotational movement may e.g. around a longitudinal axis, e.g. directed in the advancing direction of a product container used in the device or in the discharge direction of a product.
  • the securing element may be an axial movement, e.g.
  • the securing element can - viewed along the longitudinal axis or a longitudinal direction - be arranged at the level of the blocking element.
  • the securing element can assume a rotational angle position directed about the longitudinal axis or longitudinal direction relative to the blocking element, so that the securing element is in a rotational angle position in front of the blocking element.
  • the securing element can assume different rotational angle positions, preferably a securing position and an unlocked position.
  • the securing element may move in the same direction as the locking element during the movement from the securing position to the unlocked position
  • the securing element in the movement from the securing position in the moved unlocked position transversely to the direction that can perform the blocking element in the movement from the locked position to the unlocked position.
  • the blocking element may be movable toward the longitudinal axis of the injection device to or away from the longitudinal axis of the injection device. For example, starting from the longitudinal or central axis of the
  • Elements can be arranged or vice versa.
  • the securing element can be arranged within the first element or the second element.
  • the securing element in the unlocked position, may be remote from the injection device, in particular physically separate, or remain on or in the injection device, i. be connected to the injection device.
  • the inventive arrangement can be arranged at a plurality of positions in an injection device.
  • the arrangement according to the invention can be used everywhere, where position-dependent of a particular device, such as a propulsion member or a piston rod, switching operations must be made. For example, this can be achieved a flow control, which is switched in particular in an autoinjector between a piercing movement and a Aus presentiolo.
  • the arrangement according to the invention can also be used wherever one or more parts are moved to trigger a product discharge.
  • an unintentional movement of such parts should be prevented, as they can be caused, for example, when dropped by the inertia or during transport by vibration.
  • the arrangement can be arranged on a triggering device or integrated into the triggering device, whereby the negative consequences of a force applied from the outside to the injection device inadvertently or by an "accident" can be avoided.
  • the injection device is safer.
  • the arrangement according to the invention can be arranged, for example, in a device for administering a product which has an actuating element, such as an actuating sleeve. Through the actuation of the actuating element, a product discharge or a piercing process can be started directly or indirectly.
  • the actuating element can be regarded as a second element in the sense of the invention.
  • the actuating element can be mounted by a housing of the device, which can be regarded as a first element in the sense of the invention, for example. By actuating the actuating element, this is moved relative to the housing, in particular axially displaced.
  • the housing and the actuator may be sleeve-shaped, in particular cylindrical.
  • the actuating element can protrude laterally, in particular transversely to the longitudinal direction, or axially, ie in the longitudinal direction, from the device.
  • the actuator may protrude from the device in the proximal direction such that it may be actuated, for example, with a thumb of the user, or distally so that it may be actuated by being pressed against an injection site.
  • the actuating element preferably projects distally beyond the distal end of the housing.
  • the distal end of the actuator may be attached to an injection site of a patient.
  • the user preferably surrounds the housing and presses the housing in the direction of the patient or puncture site.
  • the actuating element is displaced relative to the housing, in particular into the housing.
  • a product distribution or a piercing process can be triggered.
  • the actuating element and / or the distal end of the housing by means of a cover, in particular a cap, be covered.
  • the cap can protect the actuator from accidental operation by preventing access to the actuator.
  • one of the housing and the actuating element may have at least one blocking means, which engages in the other of the housing and the actuating element.
  • the element in which engages the locking element have a recess for the Blocking element. In principle, it is sufficient if the blocking element engages in the end face of the housing.
  • the blocking element As long as the blocking element is in its blocking position, ie in the engagement, it can prevent movement between the actuating element and the housing, although it is fundamentally possible for the blocking element to be disengaged from the housing by a movement of the actuating element, ie the blocking position is moved to an unlocked position.
  • the blocking element may preferably be arranged on a resilient arm on the actuating element and in particular be moved approximately in the radial direction.
  • the securing element In order to prevent the blocking element from being pressed out of engagement with the housing by a movement of the actuating element, the securing element according to the invention is provided which can assume a securing position in which it blocks the blocking element from moving from the blocking position to the unlocked position.
  • the securing element can be moved from the securing position to an unlocked position, so that the movement of the blocking element into the unlocked position is possible.
  • the securing element is preferably in the securing position.
  • the securing element may be a part or be formed by a part which is removed prior to use of the injection device.
  • the securing element is formed by the cap.
  • the cap may have a surface which is in the mounted state of the cap in the direction of movement of the locking element in front of the locking element, so that the locking element is not movable from the locking position to the unlocked position.
  • the surface may be arranged so that it holds the blocking element in the blocking position or in the blocking position, that is, presses the engagement.
  • the removal of the cap corresponds to the movement of the securing element from the securing position to the unlocked position, as the surface releases the movement of the blocking element from the blocking position.
  • the surface which prevents the disengagement of the blocking element from the blocking position is arranged in the securing position within the sleeve-shaped actuating element.
  • the actuating element can be pressed by a spring, in particular a return spring in the distal direction, so that upon actuation of the actuating element against the direction of the spring force, the return spring is tensioned.
  • a spring in particular a return spring in the distal direction
  • the arrangement according to the invention can be arranged where a propulsion member is held and released for a propulsion movement.
  • the advancing member may correspond to the second element according to the invention and e.g. be a functional sleeve or a piston rod.
  • the propelling movement may e.g. for piercing a needle and / or for product dumping serve.
  • the propelling movement may e.g. be effected by means of a biased propulsion spring, when the second element is movable relative to the first element.
  • the first element may be a housing or an element connected to the actuator, in particular axially fixedly connected, e.g. be a switching sleeve.
  • the first element may be formed on the actuating element.
  • the securing element may be axially fixedly coupled or connected to the first element, such as with the housing or the switching sleeve.
  • the securing element may preferably perform a rotational movement for the movement from the securing position to the unlocked position.
  • the movement may, for example, be carried out prior to a triggering movement, in particular for "arming" the injection device or during, in particular, "arming during a triggering movement, triggering a dispensing or puncturing operation of the securing element.”
  • at least one positional locking device may be provided for example, the securing element and / or a part to which the securing element is movably attached and which in particular causes the securing element to be held in the securing position and / or the unlocked position such that the securing element, when it is moved out of the securing position, This resistance is higher than the resistance that must be overcome in the transition from static to sliding friction
  • the position lock is preferably a positive or / and non-positive engagement of
  • Force and torque may be directed in the direction corresponding to the direction of movement following release.
  • a position lock in the unlocked position of the fuse element causes the fuse element after reaching the unlocked position remains there or at least not readily, ie not accidentally, from the unlocked position is movable.
  • the positional lock may be a cam or generally a projection which engages a notch or generally a recess.
  • the release or locking of the position locking is preferably carried out due to the material elasticity of the securing element and / or of the securing element receiving part, which participates in the position locking.
  • the fuse element may e.g. be rotatable by hand or automatically during a release movement.
  • the securing element may be a button graspable on the housing and by the user or at least formed on the button.
  • an activation cam can be arranged on the housing or rotatable knob, which can move the blocking element out of the locking engagement.
  • the activation cam can be arranged in the circumferential direction of the device angularly offset from the activation fuse, so that either by rotational position of the knob either the activation fuse or the activation cam with the blocking element in a matching angular position.
  • An e.g. automatically releasable securing element is preferably protected from access by the user or is located within the housing.
  • a guide or transmission element can be provided, which converts the actuation movement of the actuating element into a movement of the securing element from the securing position into the unlocked position.
  • the transmission element can be formed, for example, by the housing or a housing-fixed element or the shift sleeve or another actuation element-fixed element. It is generally preferred that the transmission element is arranged in such a way or that there is a real-time movement between the securing element and the transmission element when the actuating element is triggered.
  • This relative movement is preferably directed along the longitudinal axis of the injection device, eg, proximally. By the relative movement, the securing element in a rotational movement of the Backup position to be offset.
  • the blocking element can be fixed axially relative to the securing element during actuation, in particular if the securing element is arranged axially fixed relative to the actuating element, or can be movable, in particular if the securing element is arranged axially fixed relative to the housing.
  • securing element In an axially displaceable from the securing position securing element, it may be coupled axially fixed to the actuating element.
  • the securing element is preferably displaced from an axial position in which it is at the level of the blocking element to an axial position in which it is no longer in the height of the blocking element, whereby the support for the blocking element is eliminated.
  • the securing element can be arranged in its unlocked position proximal of the blocking element.
  • Advantageous method steps result from the operation of the device.
  • the method steps of the device can also be carried out so that no administration takes place in a patient.
  • FIGS. 1a and 1b are sectional views of an injection device according to the invention according to a first embodiment with an attached cap, wherein FIG. 1b is a view rotated by 90.degree. Relative to FIG. 1a by the longitudinal axis;
  • FIGS. 2 a and 2 b are sectional views of the injection device of FIGS. 1 a and 1 b with a cap removed, FIG. 2 b being a view rotated by 90 ° about the longitudinal axis as compared with FIG.
  • Figures 3a and 3b are sectional views of the injection device of Figures Ia and Ib in an activated state, Figure 3b is a comparison with FIG.
  • Figures 4a and 4b are sectional views of the injection device of Figures Ia and Ib in a tripped state, Figure 4b is compared to Figure 4a rotated by 90 ° about the longitudinal axis view, Figures 5a and 5b are sectional views of the injection device of Figures Ia and
  • FIG. 5b is a view rotated by 90 ° with respect to FIG. 5 a, about the longitudinal axis;
  • FIGS. 6a and 6b are sectional views of the injection device from FIGS. 1a and 1b in a dispensed state, FIG. 6b being a view rotated by 90.degree. Relative to FIG. 6a about the longitudinal axis;
  • Figures 7a and 7b are sectional views of the injection device of Figures Ia and
  • FIG. 7b is a view rotated by 90 ° relative to FIG. 7a about the longitudinal axis
  • Figures 8a and 8b are sectional views of the injection device of Figures Ia and Ib in which a retraction of the injection needle is activated, Figure 8b is compared to Figure 8a rotated by 90 ° about the longitudinal axis view, Figures 9a and 9b are sectional views of the injection device of Figures Ia and
  • FIG. 9b is a view rotated by 90 ° with respect to FIG. 9a around the longitudinal axis
  • FIGS. 10a and 10b are sectional views of an inventive injection device according to a second embodiment with an attached cap, wherein Figure 10b is compared to Figure 10a rotated by 90 ° about the longitudinal axis view, FIGS. 11a and 11b show sectional views of the injection device from FIGS. 10a and 10b with a cap removed, wherein FIG. 1b is a view rotated by 90 ° relative to FIG. 1a by the longitudinal axis;
  • Figures 12a and 12b are sectional views of the injection device of Figures 10a and 10b in a tripped state, Figure 12b is a opposite
  • FIG. 12a is a view rotated by 90 ° about the longitudinal axis
  • FIG. 13 shows a perspective view of a securing element arranged in a securing position from FIGS. 10a and 10b, FIG.
  • FIG. 14 shows a perspective view of the securing element from FIG. 13, which has been moved into the unlocked position
  • FIG. 15 shows perspective views of an individual securing element from FIGS. 10a and 10b
  • FIG. 16 shows a perspective view of a switching sleeve for the device from FIGS. 10a and 10b
  • FIG. 17 shows a sectional view of an injection device according to the invention in accordance with a third embodiment with a securing element in a securing position
  • FIG. 17 shows a sectional view of an injection device according to the invention in accordance with a third embodiment with a securing element in a securing position
  • Figure 18 is a sectional view of the injection device according to Figure 17 with the securing element in an unlocked position.
  • FIGS. 1 a and 1 b show an injection device of a preferred embodiment.
  • the injection device has a housing 1 which comprises a proximal housing part 1 a and a distal housing part 1 b fixedly connected axially to the proximal housing part with a latching connection I c.
  • the latching connection Ic is formed from a window contained in the proximal housing part, in which an elastic tongue formed by the distal housing part Ib is snapped.
  • a product container 2 is accommodated, at the distal end of which an injection needle 4 for dispensing a liquid contained in the product container 2 Product is located.
  • the product container 2 has a displaceable piston 3, the movement of which causes a product discharge relative to the product container 2 and in the direction of the injection needle 4, for which reason it is also possible to speak of a dispensing movement.
  • the product container 2 is received in the device such that it is displaceable in the distal direction, so that the injection needle 4 emerges from the distal end of the injection device. Therefore, here can be talk of a plunge.
  • the product container 2 is axially fixedly connected to a holder 10 for the product container 2.
  • the holder 10 surrounds the product container 2 in the form of a sleeve so that, in order to reveal the view of the container 2, it either itself has a viewing window or, as in this example, a transparent material.
  • the product container 2 is axially fixedly connected to a functional sleeve 11 arranged proximally thereof, namely by means of a clamp formed on the proximal end of the holder 10.
  • the product container 2 has at its proximal end a radially projecting collar which is grasped by the clamp.
  • the functional sleeve 11 has at its distal end on a radially projecting collar, which is also encompassed by the clip.
  • product container 2, functional sleeve 11 and holder 10 are axially fixed together, so that they can be moved as a single part.
  • this combination is referred to as a propulsion structure 2, 10, 11.
  • the functional sleeve 11 surrounds a piston rod 5, which can act on the piston 3 for a product discharge.
  • the piston rod 5 has a sleeve-shaped part, which surrounds a propulsion spring 6, wherein the propulsion spring 6 is supported distally on the piston rod 5 and proximally on a switching sleeve 8, in particular on a base 8a formed thereon.
  • the piston rod 5 may be arranged a signaling unit, with the one for the piercing and / or the dispensing, preferably at least three or more haptic and / or acoustic signals can be generated.
  • the signaling unit comprises a grid rod 23 connected to the shift sleeve 8 and an engagement sleeve 22 surrounding the grid rod 23, which sleeve is axially fixedly connected to the piston rod 5. is locked in particular.
  • the engagement sleeve 22 has an engagement element 26 which engages in a groove 27 formed by the grid bar 23.
  • the grid rod 23 has at its proximal end a head 24 which is movable in a direction formed by the activation element 13 sliding guide 25 in the proximal direction.
  • the head is with its distal end in engagement with a base 8a formed by the shift sleeve 8, wherein the engagement prevents the head 24 and thus the grid bar 23 in the distal direction relative to the shift sleeve 8 is movable.
  • German Patent Application No. 10 2007 013 836.0 with reference to Figures 10 and 11, in which the signaling unit shown in Figures 1 to 9 is shown in detail.
  • the signaling unit from FIGS. 10 and 11 of the cited German patent application can be replaced by another signaling unit according to FIGS. 12 to 14 and still another signaling unit according to FIGS. 15 and 16, which are likewise disclosed in German patent application no. 10 2007 013 836.0 ,
  • the injection device shown in FIGS. 1 to 9 need not be substantially changed for this purpose.
  • the propulsion spring 6 is biased so that they advance the needle 4 and in particular the propulsion structure 2, 10, 11 for a piercing movement and move the piston 3 for a dispensing movement.
  • the functional sleeve 11 has a locking element 16, on which a radially inwardly directed shoulder is formed, which cooperates in the initial state with a radially outwardly projecting shoulder formed at the distal end of the piston rod 5, so that the piston rod 5 for movement relative to the functional sleeve 11 is locked.
  • the blocking element 16 is held by a radially inwardly facing surface of the switching sleeve 8 in engagement with the piston rod 5.
  • the blocking element 16 is connected via a spring arm elastically connected to the functional sleeve 11, in particular in one piece.
  • the resilient arrangement may be configured such that the blocking element 16 tends to move radially outwards, this being prevented by the radially inwardly facing surface of the switching sleeve 8.
  • the functional sleeve 11 serving as a second element in the sense of the invention has at its proximal end at least one snap element 15 serving as a blocking element 15, which in the initial state to prevent movement of serving as a second element according to the invention functional sleeve 11 and thus the propulsion structure 2, 10, 11 snaps into the shift sleeve 8.
  • the prestressed spring 6 can not yet relax and the propulsion structure 2, 10, 11 does not yet move in the distal direction.
  • the injection device has at the proximal end of its housing 1 on an activation element 13 which is axially fixed and rotatable relative to the housing 1.
  • the activation element 13 receives a return spring 21, which is supported distally at the proximal end of the shift sleeve 8 and proximally to the activation element 13.
  • the return spring 21 has the task of applying the switching sleeve 8 and an axially acting on the switching sleeve 8 actuating sleeve 9 with a force acting in the distal direction, so that switching sleeve 8 and actuating sleeve 9 are pressed in the distal direction.
  • the activating element 13 has an activation fuse 14 serving as a securing element in the sense of the invention, which engages behind the snap element 15 in the switching states of the injection device shown in FIGS. 1a, 1b, 2a and 2b such that the snap element 15 disengages for movement the shift sleeve 8 is blocked or secured.
  • an accidental triggering of the injection device can advantageously be prevented.
  • the user has access to the activation element 13 and thus in a broader sense to the trip fuse.
  • the activation fuse 14 from the engagement with the snap element 15, i. from the backup position to be moved. This is done to prepare the device preferably before triggering.
  • a return spring 7 acting in the longitudinal direction of the device is distally supported on the shift sleeve 8 and proximally on the functional sleeve 11. As shown in this example, the return spring 7 surrounds the shift sleeve 8 and the functional sleeve 11. The return spring
  • the return spring 7 is supported proximally, in particular on a collar 11a formed by the functional sleeve 11, which engages radially outward through an opening formed in the switching sleeve 8. In certain switching positions, therefore, the return spring 7 can cause a relative movement between the shift sleeve 8 and the functional sleeve 11.
  • the return spring 7 is a
  • the return spring 7 is not or preferably only with a small Preload biased.
  • the biasing force of the return spring 7 is less than the biasing force of the propelling spring. 6
  • the actuating sleeve 9 is arranged relative to the housing 1 movable.
  • the shift sleeve 8 and the actuating sleeve 9 can each act on each other with a compressive force, in particular be locked together and thereby move. So that the actuating sleeve 9 does not block the view of the product container 2, it also has a window in the region of the window 12.
  • the actuating sleeve 9 may be formed of a transparent material.
  • the actuating sleeve 9 is advanced in the initial state of the return spring 21 via the switching sleeve 8 distally over the distal end of the housing 1.
  • the distal end of the actuating sleeve 9 serves to be attached to an injection site of a patient.
  • the holder 10 has a switching cam 17 which engages in a recess 18 of the actuating sleeve 9, which, as shown in this example, may be a breakthrough.
  • the switching cam 17 is elastic with the holder 10, such. B. via a resilient arm, in particular integrally connected.
  • the switching cam 17 is preferably biased to tend to engage the recess 18 or to move radially outwardly.
  • the radially projecting from the holder 10 outwardly switching cam 17 has distally an oblique surface, which can help to push the switching cam 17 out of engagement with the recess 18.
  • the switching cam 17 proximally a transversely, in particular perpendicular to the longitudinal direction stop surface, which can get into an axial stop with the proximal boundary of the recess 18, through which the switching cam 17 can not be moved out of the recess 18.
  • the actuating sleeve 9 has an axial stop 19, on which the distal end of the holder 10 can strike at the end of a piercing movement.
  • a cap 32 is arranged, which protects the interior of the injection device from contamination, in particular the needle 4 keeps sterile.
  • the injection device is pulled off the cap 32, so that in particular the needle 4 and the actuating sleeve 9 are exposed, as shown in Figures 2a and 2b.
  • the state of the injection device shown in Figures 2a and 2b differs from the state shown in Figures Ia and Ib only in that the cap 32 is removed.
  • the force exerted at the withdrawal of the needle cap 32 on the injection device is passed through the holder 10 on the functional sleeve 11 and there passed over the snapper 15 on the shift sleeve 8, which is supported on the actuating sleeve 9.
  • the actuating sleeve 9 is in turn latched to the housing 1 via a projection Id formed by the distal housing part 1, so that the removal of the cap 32 from the injection device does not have any undesired effect on the mechanism.
  • the actuating sleeve 9 can not or only very slightly pushed into the distal end of the injection device, since this sliding movement is forwarded via the switching sleeve 8 to the snapper 15, wherein the snapper 15 at a movement in Proximal direction is prevented by the activation element 13.
  • the injection device is shown in an activated state, that is to say that the injection device can be triggered.
  • Activated or unlocked is the
  • Injection device with a rotational movement of the activation element 13 z. B. by 90 °.
  • the snap elements 15 are released for a radially inwardly directed movement characterized in that the activation fuse 14 from the engagement with the
  • Snap elements 15 moves, in particular is rotated. Thus, there is room for the snap elements 15 to be deflected inwards. Furthermore, the
  • Activation element 13 for the snap element 15 an activation cam 13 a, by the rotational movement of the activation element 13 in an axial alignment with the
  • Snap element 15 is brought.
  • the snap element 15 has proximally and the activating cam 13 a arranged proximally thereof has a contour distally, which during the movement of the snap element 15 in engagement with the activation cam 13
  • Snap element 15 can deflect radially inward.
  • the contours are two sloping planes sliding off each other.
  • the user sets the previously activated by rotation of the activation fuse 14 device with the distal end of the preferably previously disinfected injection site.
  • the actuating sleeve 9 is displaced relative to the housing 1 in the proximal direction, preferably so far until the distal end of the actuating sleeve 9 is approximately flush with the distal end of the distal housing part Ib.
  • the switching sleeve 8 is taken in the proximal direction, wherein the snap elements 15 are pressed by means of the activation cam 13a out of engagement with the switching sleeve 8 in particular radially inwardly.
  • the actuating sleeve 9 in the distal direction, as long as the snap elements 15 are snapped into the switching sleeve 8, and the elements of the propulsion structure 2, 10, 11 taken in the proximal direction. Since the piston rod 5 is in a locking engagement with the functional sleeve 11, the piston rod 5 is also taken in the proximal direction. Similarly, the recorded in the piston rod 5 signaling unit is taken in the proximal direction.
  • the head 24 formed proximally on the grid bar 23 can slide along in the guide 25 formed by the activation element 13.
  • the spring 21 is preferably a compression spring and formed from a plastic material. Alternatively, of course, springs made of a spring steel material or other spring material can be used.
  • the axial attachment of the activation element 13 to the housing 1 is in the form of a Ringschnappthetic with the housing.
  • the injection device is removed from the injection device Injection point a provision of the trigger mechanism, such as the switching sleeve 8 and the actuating sleeve 9 by the return spring 21st
  • the movement of the actuating sleeve 9 in the proximal direction forms a blocking window 20, which is delimited distally from the housing 1, in particular the projection Id and proximally from the actuating sleeve 9. Since no relative movement between the propulsion structure 2, 10, 11 and the actuating sleeve 9 takes place during the movement of the actuating sleeve 9 in the proximal direction, the switching cam 17 remains in the recess 18.
  • the propulsion spring 6 can relax partially, whereby the propulsion structure 2, 10, 11 is displaced in the distal direction. In this case, the injection needle 4 protrudes beyond the distal end of the injection device. Since the functional sleeve 11 is moved relative to the switching sleeve 8 in this piercing movement, the return spring 7 is compressed, i. curious; excited. The spring force of the propulsion spring 6 is during the entire piercing operation, i. also at the beginning and at the end of the piercing operation greater than the spring force of the return spring 7. This has e.g. the advantage that the piercing force is reduced, which helps to protect the injection device.
  • the blocking element 16 engages in the recess 18 with a radially outwardly directed movement, as should be shown with the arrows in FIG. 5b ,
  • the blocking element 16 has a radially outwardly directed projection.
  • the blocking element 16 fulfills a dual function. When engaging the locking element 16 in the recess 18 simultaneously locks the locking element 16 with the radially outwardly directed movement of the piston rod 5, so that it is released for a dispensing movement. In return, the movement of the propulsion structure 2, 10, 11 locked in the axial direction, in particular in the proximal direction.
  • Shift sleeve 8 caught and not supported on the housing.
  • the product container 2 drives forward and the piston rod 5 can dispense after the engagement of the locking elements 16 in the recesses 18.
  • Puncturing is stopped by the stop 19 on the actuating sleeve 9.
  • this distance is used to generate a haptic or acoustic signal intended to signal complete product release.
  • the small distance z arises from the difference between the distance which prevails between the stop face of the control cam 17 pointing in the proximal direction and the stop face pointing in the proximal direction, and the distance between the proximal boundaries of the recess 18 and the stop window 20.
  • the piston rod 5 may have a recess or be dimensioned in length so that after the product has been discharged, the securing of the blocking element 16 through the outer peripheral surface of the piston rod 5 is eliminated, so that the blocking element 16, as shown in Figure 6b, from the recess 18 can disengage.
  • the disengagement can be due to an elastically biased arrangement of the locking element 16 or due to the geometry of the locking element 16, which causes a pushing out of the locking element 16 from the recess 18, caused.
  • Propulsion spring 6 is now lower than the spring force of the prestressed return spring. 7
  • Switching cam 17 abruptly with its proximal end to the distal end of
  • Locking window 20 is moved.
  • a haptic and / or acoustic signal is generated.
  • the needle 4 is not yet completely pulled out of the patient.
  • the patient or the user of the device can now wait any time until the needle is completely pulled out of the patient, since he the automatic needle retraction of the
  • Locking window 20 and thereby blocks the relaxation of the spring 7.
  • FIGS. 9a and 9b the injection device is shown in a final state. In this state, the injection device again has the same dimensions as on
  • the cap 32 can be replaced and disposed of the injection device.
  • the needle In the end position the needle is completely in the distal end of the
  • the piercing or dispensing operation in the above-described injection device can be initiated by the user in substantially three steps, namely, by peeling off the cap and rotating the button 13, or vice versa, and pressing the distal end of the injection device to the injection site.
  • Figures 10 to 16 show a preferred embodiment of the invention in an auto-injector.
  • the auto-injector is similar to the operation of the auto-injector of Figs. 1a-9b, but with some differences in the initiation of the piercing operation.
  • the differences from the autoinjector from FIGS. 1 to 9 will therefore be described below, reference being otherwise made to the description of the embodiment shown in FIGS. 1a to 9b.
  • FIG. 10a shows the injection device in a starting position, ie unreleased, and with a cap 32 placed on the distal end of the injection device.
  • the cap 32 prevents access to the actuating sleeve 9, which acts as the second element in FIG Meaning of the invention can be considered. Above all, however, the cap 32 forms a securing element in the sense of the invention.
  • the actuating sleeve 9, which protrudes distally beyond the distal end of the housing 1 has a blocking element 9a which engages in the housing 1, which can be regarded as the first element in the sense of the invention.
  • the cam-shaped blocking element 9a is integrally formed on a resilient arm on the actuating sleeve 9, so that it can spring transversely to the longitudinal direction L of the injection device.
  • the blocking element 9 a engages in the distal end, in particular in the distal end side of the housing 1.
  • the housing 1 could also have a recess into which the blocking element 9a can engage.
  • the serving as a fuse element cap 32 has a surface which prevents movement of the locking element 9a out of engagement with the housing 1. The blocking element 9 a is held by this surface in engagement with the housing 1 or pressed into engagement with the housing 1.
  • the cap 32 has a sleeve-shaped portion which forms the surface which holds the locking member 9a in engagement with the housing 1. To ensure the engagement, the surface of the cap 32 is disposed below the cam 9a, that is, the surface is disposed in the path in front of the cam 9a, which the cam 9a would follow in a disengaged from the housing 1.
  • the cap 32 is in the securing position blocking the locking element 9a from moving from the locked position to the unlocked position.
  • the cap 32 is moved to the unlocked position in which it releases the movement of the locking element 9a in the unlocked position, which does not necessarily mean that the locking element 9a due to the Pulling the cap 32 is moved to the unlocked position. Rather, it may be necessary for this still another movement, such as the actuating sleeve 9.
  • the injection device is shown in a state in which the cap 32 is removed. Despite removed cap 32, the locking element 9a is still engaged with the housing. 1
  • a cap covering the needle 4 which for example may be made of an elastic material such as rubber or rubber, may be withdrawn from the needle 4.
  • the cap 32 may include an engaging member, such as a plastic claw, preferably metal, which engages the needle cover and transmits the peel movement of the cap 32 to the needle cover.
  • the engagement member may be axially fixed to the cap 32.
  • the injection device is ready for triggering.
  • the actuating sleeve 9 By placing and pressing the distal end, in particular the distal end face of the actuating sleeve 9 to the injection site, the actuating sleeve 9 is moved in the proximal direction in the housing 1, whereby the piercing process and indirectly also the Artsaus sectionvorgang is triggered.
  • the resiliently radially outwardly biased cams 9a are pushed inwardly, that is from the locking position to the unlocked position, whereby the movement between the first element and the second element is released.
  • the locking element 9a has a shape, in particular a pointing in the proximal direction inclined surface which causes the movement of the locking element 9a from the locking position to the unlocked position when the actuating sleeve 9 is moved relative to the housing 1 in the proximal direction.
  • Figures 12a and 12b show the actuating sleeve 9 in its shifted in the proximal direction state.
  • the locking element 9a in its unlocked position in which it remains pressed in this example from the inner circumference of the housing 1 radially inward. In the state shown in Figures 12a and 12b, the injection device is triggered.
  • the injection device can be removed from the injection site, so that the actuating sleeve 9 is displaced by the return spring 21 relative to the housing 1 in the distal direction, so that the cap 32 can be placed on the injection device for common disposal, this step is not necessary.
  • FIGS. 10a to 16 show a securing element in the form of an activation safeguard 14.
  • the activation fuse 14, which is best shown in FIG. 15, serves to secure the snap element 15, which acts as a blocking element in the sense of FIG the invention serves to hold in engagement with the shift sleeve 8, which can be regarded as the first element of the invention.
  • This engagement may be referred to as a blocking position, since movement of the functional sleeve 11 serving as a second element relative to the shift sleeve 8 due to the engagement of the snap elements 15 in the shift sleeve 8 is prevented.
  • the activation fuse 14 supports the snap element 15 radially from the inside and thus prevents disengagement of the snap element 15 from the shift sleeve 8, in particular in an unlocked position in which the functional sleeve 11 is movable relative to the shift sleeve 8 in the distal direction.
  • the activation fuse 14 is rotatably and axially fixedly connected to the shift sleeve 8.
  • the switching sleeve 8 has a web 8a, in which the activation fuse 14 is positively locked, so that it is rotatable relative to the shift sleeve 8, at least by an angle ⁇ .
  • the activation fuse 14 Upon actuation of the actuating sleeve 9, the activation fuse 14 is displaceable together with the shift sleeve 8. The activation fuse 14 remains at the triggering and until the end of the triggering at the axial height of the snap element 15. The snap element 15 is moved in the tripping movement of the actuating sleeve 9 together with the switching sleeve 8 in the proximal direction.
  • the activation safeguard 14 is movable into an unlocked position during the release movement, ie the movement of the shift sleeve 8 in the proximal direction from the securing position shown in FIGS. 10 a, 11 a and 13 a, in particular being rotatable through an angle ⁇ .
  • the snap element 15 is released for movement from the locked position to an unlocked position.
  • the movement of the snap element 15 in the unlocked position take place in that the snap elements 15 disengage from the engagement with the shift sleeve 8, for example, due to their sprung bias when omitting the support by the activation fuse 14.
  • the snap element 15 remains in engagement with the shift sleeve 8 when the activation fuse 14 is moved from its secure position.
  • the snap element 15 may be in such an engagement with the housing 1 that it is movable from the locked position to the unlocked position, in particular when the actuating sleeve 9 is actuated.
  • the housing may have an activation cam 13a, which is axially aligned with the snap element 15 in the direction of actuation, so that upon actuation of the actuation sleeve 9, the snap element 15 engages with the activation cam 13a, whereby the axial movement of the snap element 15 into a movement transverse to Longitudinal axis L is converted.
  • the snap element 15 may have an inclined surface in the proximal direction, which slides on the activation cam 13a during axial movement and thus pushes the snap element 15 in the direction of the central axis L, in particular in the unlocked position. In the unlocked position of the snap element 15, the functional sleeve 11 can be displaced in the distal direction, whereby the piercing of the needle 4 takes place.
  • the activation fuse 14 can be advised upon actuation of the actuating sleeve 9 in such an engagement with the housing 1, that the axial movement of the activation fuse 14 is converted into a rotational movement.
  • the housing 1 may have a guide element 13b, on which the activation fuse 14 slides off during its axial movement and is set into a rotational movement.
  • the guide member 13b is arranged so that upon actuation of the actuating sleeve 9, first the activation fuse 14 is rotated from the securing position to the unlocked position and then the snap element 15 is moved by means of engagement with the activation cam 13a from the locked position to the unlocked position.
  • the guide element 13b and / or the activation fuse 14 may have an inclined surface 14a.
  • the oblique surfaces may in particular be chamfered in the circumferential direction, as shown for example in FIGS. 13 to 15.
  • the user can trigger the device with essentially two steps, wherein the device is ensured against unintentional release during handling and during transport.
  • the triggering comprises the steps of removing the cap and pressing the device with its distal end to the puncture site. These movements are essentially gross motor movements, which can also be performed by persons suffering from a fine motor movement handicap.
  • the axial fixing of the activating fuse 14 relative to the switching sleeve 8 is achieved by connecting the web or base 8a of the switching sleeve 8 between a bifurcated portion 14d and a collar 14b with a small axial play is enclosed.
  • the activation fuse 14 has a shank, protrude from the T-shaped two wings, which can hold the snap elements 15 in their locked position.
  • the bifurcated portion 14d of the activation fuse 14 serves to ensure that the activation fuse 14 can be positively locked in the recess provided for this purpose for the switching sleeve 8.
  • the activation fuse 14 has at least one projection 14c, in particular on the circumference of the shaft.
  • the Abragung 14c can optionally engage in the recess 8c and 8d of the shift sleeve 8, depending on the angular position. As a result, an undesired rotation of the activation fuse 14 is prevented, such as by vibrations. Rather, the engagement with, for example, the housing 1 is necessary to cause a rotation of the activation fuse 14.
  • the recess 8d, in which the Abragung 14c engages when the activation fuse 14 is in its unlocked position, is offset by the angle ⁇ to the recess 8c, in which the Abragung 14c is in the secure position of the activation fuse 14.
  • the angle is preferably an angle less than or equal to 90 °, such as 45 ° +/- 10 °, although angles greater than 90 ° but less than 180 ° may be possible.
  • the switching sleeve 8 is shown, wherein the distal direction points to the viewer.
  • the switching sleeve 8 has recesses 8b, through which the arms of the functional sleeve 11, on which the locking elements 15 are arranged, can reach through.
  • FIGS. 17 and 18 show a further embodiment of the invention.
  • the device comprises a housing 100, at the proximal end of which a closure element 130 is connected in an axially fixed manner and preferably also in a rotationally fixed manner to the housing 100.
  • the closure member 130 may be considered part of the housing 100.
  • a piercing and / or ejection spring 60 is supported with its proximal end on the closure element 130 and with its distal end on a hollow piston rod 50, in which the spring 60 is received from.
  • the spring 60 is biased in the state shown in Figures 17 and 18 with the energy necessary for piercing and dumping.
  • the piston rod 50 is held by a functional sleeve 110.
  • the functional sleeve 110 has a snap element 150, which engages in an inwardly projecting projection of the housing 100.
  • the Snap element 150 can be regarded as a blocking element, the housing 100 as a first element and the functional sleeve 110 as a second element in the context of the invention.
  • the device further comprises an activation fuse 140 serving as a securing element, which, as shown in FIG. 17, is in an initial state at the axial height with the snap element 150. This prevents movement of the snap element 150 out of engagement with the housing 100 corresponding to the lock position to an unlocked position where the snap element 150 is no longer in engagement with the housing 100.
  • the activation fuse 140 is fixedly connected to an actuating element, such as an actuating sleeve of FIG.
  • the activation fuse 140 When pressing the injection device to the injection site, the activation fuse 140 is displaced in the distal direction (arrow), that is, from a securing position in which the snap element 150 is blocked from moving from the blocking position to the unlocked position, into an unlocked position, in which the Movement of the locking element 150 is released to the unlocked position.
  • the activation safeguard 140 is no longer at the axial height of the snap element 150, so that the snap element can execute a movement into the unlocked position.
  • the snap element 150 and / or the housing 100 are shaped or in particular have chamfered surfaces, which cause the snap element 150 due to the force of the biased spring 60, which is transmitted via the piston rod 50 to the functional sleeve 110, on the housing 100 and thus performs a movement radially inwardly in the unlocked position, whereby the functional sleeve 110 for movement relative to the housing 100, driven by the spring 60, is released.
  • a product container is coupled, which is displaced by the movement of the functional sleeve 110 in the distal direction, whereby a needle attached to the product container is inserted into the patient. Subsequently, the piston rod 50 is released for a dispensing movement.

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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'administration d'un produit, en particulier d'un médicament, qui comprend : a) un premier élément (1; 8; 100), b) un second élément (9; 11; 110) qui déplaçable par rapport au premier élément (1; 8; 100), et c) un élément de blocage (9a; 15; 150) qui peut être déplacé entre une position de blocage dans laquelle il empêche un déplacement entre le premier élément (1; 8; 100) et le second élément (9; 11; 110) et une position de déblocage dans laquelle il permet le déplacement entre le premier élément (1; 8; 100) et le second élément (9; 11; 110). Ce dispositif est caractérisé par e) un élément de sécurité (32; 14; 140) qui peut être déplacé entre une position de sécurité dans laquelle il bloque le déplacement de l'élément de blocage (9a; 15; 150) de sa position de blocage vers sa position de déblocage et une position de libération dans laquelle il permet le déplacement de l'élément de blocage (9a; 15; 150) vers la position de déblocage.
EP08718194A 2007-03-22 2008-03-25 Dispositif d'injection à systèmes de sécurité anti-déclenchement Withdrawn EP2129414A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007013837A DE102007013837A1 (de) 2007-03-22 2007-03-22 Federanordnung in einer Injektionsvorrichtung
DE102007013838A DE102007013838A1 (de) 2007-03-22 2007-03-22 Injektionsvorrichtung mit zeitkonstantem Ausschüttsignal
DE102007013836A DE102007013836A1 (de) 2007-03-22 2007-03-22 Injektionsvorrichtung mit gesteuertem Nadelrückzug
PCT/EP2008/053510 WO2008113864A1 (fr) 2007-03-22 2008-03-25 Dispositif d'injection à systèmes de sécurité anti-déclenchement

Publications (1)

Publication Number Publication Date
EP2129414A1 true EP2129414A1 (fr) 2009-12-09

Family

ID=39523491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08718194A Withdrawn EP2129414A1 (fr) 2007-03-22 2008-03-25 Dispositif d'injection à systèmes de sécurité anti-déclenchement

Country Status (4)

Country Link
US (1) US20100152659A1 (fr)
EP (1) EP2129414A1 (fr)
CN (1) CN101674857A (fr)
WO (1) WO2008113864A1 (fr)

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US9895493B2 (en) 2004-05-28 2018-02-20 Cilag Gmbh International Injection device
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