Injection device for injecting a pharmaceutical substance, and injection loading part for such an injection device
Inventors
Naumburg, Torsten • Limbeck, Roland
Assignees
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Publication Number
US-12427255-B2
Publication Date
2025-09-30
Expiration Date
Abstract
The invention relates to an injection device (1) for injecting a pharmaceutical substance, having a proximal part (5) which has a drive (7) to implement an injection, and havinga distal part (13) which is configured to accommodate an injection loading part (3), which has a packaging means receiving part (17) and a primary packaging means (23) which held in the packaging means receiving part (17) and in which a pharmaceutical substance is received, wherein the pharmaceutical substance can be injected from the injection loading part (3) when the injection loading part (3) is arranged in the distal part (13), whereinthe distal part (13) is designed in such a way that the injection loading part (3) can be inserted axially into the distal part (13), and whereinthe injection device (1) has a screen (15) which is designed and arranged in such a way that an injection needle (25) of the injection loading part (3) is concealed from a user during use of the injection device (1).
Core Innovation
The invention relates to an injection device having a proximal part with a drive to implement an injection and a distal part configured to accommodate an injection loading part. The injection loading part has a packaging means receiving part and a primary packaging means holding a pharmaceutical substance, and the pharmaceutical substance can be injected when the injection loading part is arranged in the distal part. The distal part is designed so the injection loading part can be inserted axially into the distal part.
The injection device includes a screen configured and arranged so that an injection needle of the injection loading part is concealed from a user during use. The proximal end face of the distal part has a loading opening through which the injection loading part can be inserted. The injection device further has a locking part that can be inserted through the loading opening into the distal part and is configured to contact a proximal contact surface of the injection loading part, the locking part including a base body and at least one pivotably articulated locking element.
In a first axial position inside the distal part, remote from a locking opening formed in a peripheral wall of the distal part, the locking element is pivoted into the base body. In a second axial position inside the distal part, at the position of the locking opening, the locking element pivots out, passes through the locking opening, and blocks an axial displacement of the injection loading part. Additional embodiments include a rigid screen formed by the distal part and a displaceable screen controlled by a screen locking mechanism including a rotary disk and interactions with a blocking projection and a piston rod.
Claims Coverage
The partial content contains two independent claims. Across these claims, the main inventive features include an axially insertable injection loading part, needle concealment by a screen, and mechanical locking that blocks axial displacement or controls the screen position using a locking part or a screen locking mechanism with a rotary disk and piston-rod interaction.
Axially insertable injection loading part with packaging means
An injection device with a distal part configured to accommodate an injection loading part, wherein the injection loading part has a packaging means receiving part and a primary packaging means holding a pharmaceutical substance, and the distal part is designed so the injection loading part can be inserted axially into the distal part.
Concealed injection needle by screen during use
An injection device having a screen designed and arranged so that an injection needle of the injection loading part is concealed from a user during use of the injection device.
Loading opening and locking part blocking axial displacement
A proximal end face of the distal part has a loading opening, and the injection device has a locking part insertable through the loading opening into the distal part to contact a proximal contact surface of the injection loading part, the locking part having a base body and at least one pivotably articulated locking element that pivots out through a locking opening to block an axial displacement of the injection loading part.
Screen locking mechanism actuated by injection loading insertion and piston rod
An injection device in which the distal part has a screen locking mechanism configured to block the screen in a blocking position and release it in a release position, the screen locking mechanism being unblocked when the injection loading part is inserted into the distal part and being blocked by a piston rod assigned to the drive.
Rotary disk screen locking with recess passage and blocking projection
A screen locking mechanism having a rotary disk arranged in the distal part so it can rotate between the blocking position and the release position, wherein the rotary disk has at least one recess passage through which a blocking projection of the screen can be displaced in the release position, and wherein the blocking projection strikes the rotary disk in the blocking position.
Overall claim coverage centers on concealing an injection needle with a screen while using an axially insertable injection loading part and employing mechanical locking: either a pivotable locking part blocking axial displacement or a screen locking mechanism with a rotary disk where the blocking projection and piston rod switch the screen between blocking and release positions.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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