Reloadable auto-injector
First Claim
1. A reloadable auto-injector comprising:
- a syringe (3);
a housing portion (101) designed to receive the syringe (3);
a cover portion (102) which is removably attached to the housing portion; and
an injection device for automatically injecting a substance contained in the syringe,said injection device comprising;
an actuating spring (22);
piston (21) comprising, in the vertical position of the auto-injector with the syringe (3) at the bottom, a high portion (21b) and a low portion (21c), said low portion (21c) co-operating with the plunger of the syringe, said piston (21) being mounted to move, under the effect of said spring (22) between a cocked position and an end-of-stroke position, said spring (22) being compressed in said cocked position; and
trigger means (19) mounted to move between a blocking position in which said trigger means holds the piston (21) in its cocked position, and a releasing position in which said trigger means releases the piston (21), said trigger means (19) being released from the blocking position by an actuating member;
wherein said auto-injector further includes recocking means for recocking the automatic injection device, said auto-injector being characterized in that said recocking means include a cocking member (150) that co-operates with at least one element (125) secured to the piston (21) during the operation of closing said cover portion (102) in order to bring said piston (21) from its end-of-stroke position to its cocked position, said piston (21) sliding inside a fixed sleeve (126) in the cover portion (102) which includes at least one axial slot (127) through which said at least one element (125) secured to the piston projects, in order to cooperate with said cocking member (150).
1 Assignment
0 Petitions
Accused Products
Abstract
A reloadable auto-injector including a housing portion (1, 101) designed to receive a syringe (3), and a cover portion (2, 102), the auto-injector incorporating an injection device for automatically injecting the substance contained in the syringe, the injection device comprising: a piston (21) comprising a high portion (21b) and a low portion (21c), the low portion (21c) co-operating with the plunger of the syringe, the piston (21) being mounted to move, under the effect of an actuating spring (22) between a cocked position and an end-of-stroke position, the spring (22) being compressed in the cocked position; and trigger means (19) mounted to move between a blocking position in which they hold the piston (21) in its cocked position, and a releasing position in which they release the piston (21), the trigger means (19) being released from their blocking position by an actuating member; the auto-injector being characterized in that it further includes recocking means for recocking the automatic injection device, the recocking means being organized to be actuated by the operation of opening and/or closing said cover portion (2, 102) of the auto-injector.
279 Citations
16 Claims
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1. A reloadable auto-injector comprising:
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a syringe (3); a housing portion (101) designed to receive the syringe (3); a cover portion (102) which is removably attached to the housing portion; and an injection device for automatically injecting a substance contained in the syringe, said injection device comprising; an actuating spring (22); piston (21) comprising, in the vertical position of the auto-injector with the syringe (3) at the bottom, a high portion (21b) and a low portion (21c), said low portion (21c) co-operating with the plunger of the syringe, said piston (21) being mounted to move, under the effect of said spring (22) between a cocked position and an end-of-stroke position, said spring (22) being compressed in said cocked position; and trigger means (19) mounted to move between a blocking position in which said trigger means holds the piston (21) in its cocked position, and a releasing position in which said trigger means releases the piston (21), said trigger means (19) being released from the blocking position by an actuating member; wherein said auto-injector further includes recocking means for recocking the automatic injection device, said auto-injector being characterized in that said recocking means include a cocking member (150) that co-operates with at least one element (125) secured to the piston (21) during the operation of closing said cover portion (102) in order to bring said piston (21) from its end-of-stroke position to its cocked position, said piston (21) sliding inside a fixed sleeve (126) in the cover portion (102) which includes at least one axial slot (127) through which said at least one element (125) secured to the piston projects, in order to cooperate with said cocking member (150). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A reloadable auto-injector comprising:
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a syringe (3); a housing portion (1,
101) designed to receive the syringe (3);a cover portion (2,
102) which is removably attached to the housing portion; andan injection device for automatically injecting a substance contained in the syringe, said injection device comprising; an actuating spring (22); a piston (21) comprising a high portion (21b) and a low portion (21c), said low portion (21c) co-operating with the plunger of the syringe, said piston (21) being mounted to move, under the effect of said spring (22) between a cocked position and an end-of-stroke position, said spring (22) being compressed in said cocked position; and a trigger mechanism (19) mounted to move between a blocking position in which said trigger mechanism holds the piston (21) in its cocked position, and a releasing position in which said trigger mechansim releases the piston (21), said trigger mechanism (19) being released from the blocking position by an actuating member; wherein said auto-injector includes a recocking mechanism for recocking the automatic injection device, said recocking mechanism being organized to be actuated by an operation of opening and/or closing said cover portion (2,
102) of the auto-injector.
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Specification