Device for protection of the needle for a syringe and injection device comprising a syringe and said protection device
First Claim
1. A needle protection device comprising:
- a protector support (20) delimiting a syringe barrel (4);
a needle protector (22) able to move with respect to the protector support (20) between a retracted position and a deployed position;
a compression spring (24) pressing between the protector support (20) and the needle protector (22);
at least one stud (54)of the needle protector (22) retained within at least one opposing slot (38, 40) in the protector support (20), configured for initially restraining the needle protector (22) against the action of the compressed spring (24) in the retracted position, and wherein said needle protector (22) is releasable by moving the needle protector (22) with respect to the protector support (20) in a release direction;
at least one hook (56) secured to the needle protector (22) or the protector support (20) and engageable with the other of the needle protector (22) and the protector support (20) for immobilizing movement of the needle protector (22) with respect to the protector support (20) in the release direction when no syringe barrel (4) is present in the passage of the protector support; and
said at least one hook (56) is deformable by engaging a syringe barrel (4) in the passage of the protector support (20) for deactivating the immobilization of the needle protector (22).
1 Assignment
0 Petitions
Accused Products
Abstract
The needle protection device comprises: a protector support (20), defining an introduction duct for a syringe body, a needle protector (22) which may be displaced relative to the protector support (20), between a retracted position and a deployed position, a compression spring (24), applied between the protector support (20) and the needle protector (22) and initial retaining means (38, 40, 54) for the needle protector (22) against the force of the compressed spring (24), said means (38, 40, 54) being released by displacement of the needle protector (22) in a release direction with relation to the protector support (20). The device further comprises mechanical locking means (56) for the needle protector (22) with relation to the protector support (20) in the release direction in the absence of a syringe body in the protector support duct and said mechanical locking means (56) may be deactivated by engaging a syringe body in the duct on the protector support (20).
-
Citations
9 Claims
-
1. A needle protection device comprising:
-
a protector support (20) delimiting a syringe barrel (4); a needle protector (22) able to move with respect to the protector support (20) between a retracted position and a deployed position; a compression spring (24) pressing between the protector support (20) and the needle protector (22); at least one stud (54)of the needle protector (22) retained within at least one opposing slot (38, 40) in the protector support (20), configured for initially restraining the needle protector (22) against the action of the compressed spring (24) in the retracted position, and wherein said needle protector (22) is releasable by moving the needle protector (22) with respect to the protector support (20) in a release direction; at least one hook (56) secured to the needle protector (22) or the protector support (20) and engageable with the other of the needle protector (22) and the protector support (20) for immobilizing movement of the needle protector (22) with respect to the protector support (20) in the release direction when no syringe barrel (4) is present in the passage of the protector support; and said at least one hook (56) is deformable by engaging a syringe barrel (4) in the passage of the protector support (20) for deactivating the immobilization of the needle protector (22). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A needle protection device comprising:
-
a protector support (20) defining a passage for receiving a syringe barrel (4); a needle protector (22) moveable with respect to the protector support (20) between a retracted position and a deployed position; a compression spring (24) pressing between the protector support (20) and the needle protector (22); at least one stud (54) of the needle protector (22) retained within at least one opposing slot (38, 40) in the protector support (20), configured for restraining the needle protector (22) against the action of the compressed spring (24) when the needle protector (22) is in the retracted position, thereby preventing the needle protector (22) from moving from the retracted position to the deployed position, and wherein said needle protector (22) is releasable by moving the needle protector (22) with respect to the protector support (20) in an upward release direction opposite the action of the compressed spring (24); and at least one hook (56) of the needle protector (22) configured to; immobilize the needle protector (22) in the upward release direction when the needle protector (22) is in the retracted position and no syringe barrel (4) is present in the passage of the protector support (20), said at least one hook (56) being deformable by engaging a syringe barrel (4) advanced into the passage of the protector support (20) to deactivate the immobilization of the needle protector (22), and prevent return of the needle protector (22) to the retracted position when the needle protector (22) is in the deployed position.
-
Specification