Injection device

Injection device according to the preceding claim wherein the slideable separator finger (24b) is laterally slidable in a transverse direction (Td) to the injection direction (Id) to disengage the separator fingers and allow the first and second jaws to move to a gripped position.

Injection device according to either of the two directly preceding claims wherein the slideable separator finger (24b) is laterally slidable between lateral shoulders (32) on the gripper, such that a lateral shoulder (31) of the slideable separator finger abuts against a lateral shoulder (32) of the gripper (13) to translate the gripper in the transverse direction (Td) when the second separator is actuated.

Injection device according to any of the three directly preceding claims wherein the slideable separator finger (24b) comprises a nut portion (21a) that is threadably engaged by the screw (20a) of said actuator (14a) of the cap actuation mechanism.

Injection device according to any preceding claim wherein the gripper comprises a spring (36) biasing the first jaw (23a) towards the second jaw (23b).

Injection device according to any preceding claim wherein the second jaw (23b) comprises a locking shoulder (29) that engages an end edge of the needle cap (8) such that the needle cap is clamped or gripped between the locking shoulder and a front wall (45) on the first jaw (23a).

Injection device according to any of preceding claim wherein the syringe actuation mechanism (5) comprises an actuator (14b) fixed in the housing and a movable syringe support frame (16c) for lodging the syringe coupled to an output of the actuator (14b) to displace the syringe support frame relative to the housing in the injection direction (Id).

Injection device according to the preceding claim wherein the actuator (14b) comprises a motor (17b) and a screw-nut linear displacement mechanism having a screw driven by the motor and engaging a nut connected to the syringe support frame (16c).

Injection device according to any preceding claim wherein the syringe cradle comprises a slot (41) to receive the syringe flange (11) with some play between a shoulder (42) formed on the support frame (16b) and a clamp shoulder (33b) formed on a syringe flange clamp (33) that is movably mounted relative to the syringe support frame (16c) and the housing to clamp the syringe flange against the shoulder.

Injection device according to the preceding claim wherein the syringe flange clamp (33) is biased by a spring (25) towards the clamping position.

Injection device according to the preceding claim wherein the plunger actuation mechanism (6) comprises an actuator paddle (34a) coupled to an output of an actuator motor (17c) configured to displace the syringe plunger, whereby in its fully rearward position the actuator paddle engages the syringe flange clamp (33) to pull it backwards against the force of the spring (25) such that the slot (41) allows the syringe flange (11) to be easily inserted in the slot with some play.

Injection device according to any preceding claim wherein the plunger actuation mechanism (6) comprises an actuator (14c) that is fixedly mounted to the syringe support frame (16c) such that the actuator displaces in the injection direction with the movement of the syringe support frame (16c) and couples to the syringe plunger (9) to advance the plunger in the container during administration of the liquid drug.

Injection device according to any preceding claim wherein the actuator of the plunger actuation mechanism comprises a motor and a screw-nut mechanism to accomplish the corresponding linear movements of the syringe flange clamp (33) and of the plunger (9) for the drug administration operation.