| CPC A61M 5/3202 (2013.01) | 13 Claims |
|
1. A protective device for a needle tube of a syringe, the protective device comprising:
a base; and
a cover connected to the base,
wherein the base is configured to cooperate with a needle carrier by positive form locking wherein the needle carrier supports the needle tube,
wherein the cover is configured elongated along a longitudinal axis and defines an interior space in which the needle tube is storable so that a person is protected against an unintentional contact with the needle tube,
wherein the cover is pivotably supported at the base so that the cover is transferable relative to the base within a pivot plane from a starting position where the needle tube is stored in the interior space before being used for injection in a first pivot direction into an operating position where the needle tube is available for injection, and eventually transferrable in a second pivot direction opposite to the first pivot direction into a protective position where the needle tube is stored in the interior space again after being used for injection,
wherein the cover is open at one side in the pivot plane so that the needle tube is able to initially exit from the interior space for injection by performing the pivot movement of the cover in the first pivot direction and able to enter the interior space again by performing the pivot movement of the cover in the second pivot direction after being used for the injection,
wherein the cover includes a retaining device in the interior space wherein the retaining device is configured to interlock the needle tube by positive form locking during a transfer of the cover into the protective position so that an unintentional exit of the needle tube from the interior space is prevented after a completion of the transfer of the cover into the protective position,
wherein the retaining device includes a deformable lobe, a stop associated with the deformable lobe and at least one guide element,
wherein the deformable lobe is configured to be deformed by the needle tube during transfer of the cover into its protective position and displaced in a first displacement direction so that the needle tube is able to enter into a safety area arranged behind the deformable lobe in which the needle tube is interlocked behind the deformable lobe,
wherein the stop is configured at an inner enveloping surface of the cover opposite from the deformable lobe, so that the deformable lobe when deformed by the needle tube contacts a contact surface of the stop in a second displacement direction opposite to the first displacement direction so that an unintentional exit of the needle tube from the safety area is prevented,
wherein the guide element is associated with the stop and configured to guide the needle tube so that a presence of the needle tube below a stop surface of the stop is prevented after the needle tube enters the safety area,
wherein the deformable lobe extends in undeformed condition from the inner enveloping surface of the cover into the interior space and defines a lobe angle of at least 35° with the pivot plane viewed in a cross section orthogonal to the longitudinal axis of the cover.
|