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US 2003/0149404 A1Published application
Needle cover and cannula support comprising a needle cover
AssigneeTecPharma Licensing AG
InventorHans-Ulrich Lehmann
Life of this patent
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AssigneeTecPharma Licensing AG
InventorHans-Ulrich Lehmann
Estimating the term…
A needle cover for covering an injection needle of an injection device, such as an injection pen, including a cover which can be shifted longitudinally along the longitudinal axis of the needle and which covers a proximal end of the needle in a needle protecting position, a restoring means for axially returning the cover from a retracted position towards the proximal end of the needle into an advanced position, and a latch for preventing the cover from being retracted in the needle protecting position, wherein the position of the cover is different in the advanced position and in the needle protecting position, and the latch is activated to prevent the cover from being retracted when the cover is shifted near to the needle protecting position. The present invention encompasses a cannula support comprising such a needle cover, wherein the needle cover is detachably or non-detachably connected to the cannula support.
A needle cover for covering an injection needle of an injection device, including:
The needle cover as set forth in the preceding claim, wherein the restoring means is designed such that a restoring force acts against the covering means advancing from the advanced position into the needle protecting position.
The needle cover as set forth in the preceding claim, wherein said flexible elements are curved radially outwards in the advanced position of the needle and can be compressed into the retracted position due to a force acting in the axial direction of the needle.
The needle cover as set forth in the preceding claim, wherein the flexible elements each comprise a weak point in a central region, such that halves of the flexible elements project from said weak point substantially mirror-symmetrically.
The needle cover as set forth in the preceding claim, wherein the restoring means includes two or four flexible elements, wherein said spring-elastic elements project from diametrically opposing facing sides of the spring-elastic elements.
The needle cover as set forth in the preceding claim, wherein said snapping element comprises a chamfer along which said edge of said opposing flexible element slides when the latching means is latched.
The needle cover as set forth in the preceding claim, comprising another sleeve which surrounds the needle, wherein said two sleeves are telescopic.
The needle cover as set forth in the preceding claim, wherein the latching means includes a coulisse guide on a side wall of a sleeve or on a proximal circumferential rim of a distal sleeve which guides the relative rotation, in order to transfer the sleeves to the needle protecting position.
A cannula support comprising an injection needle for injecting a fluid, comprising a needle cover as set forth in any one of the preceding claims and which is detachably or non-detachably connected to said cannula support.
The cannula support as set forth in the preceding claim, wherein the needle is a 31-gauge needle.
A needle cover for covering an injection needle, comprising:
Dependencies are inferred from the claim text.