Safety device actuation system

A safety needle assembly comprising:

• a syringe;
• and
• a safety mechanism positioned at a distal end of the syringe, the safety mechanism including:
• a housing defining an internal cavity;
• a shield member at least partially disposed within the internal cavity;
• and
• first and second locking members configured to selectively engage the shield member to maintain the shield member in one or more predetermined positions, the first and second locking members being movable between a locked position, in which the first and second locking members are in engagement with the shield member to substantially prevent axial movement thereof, and a release position, in which the first and second locking members are disengaged from the shield member to permit axial movement of the shield member, wherein the first and second locking members are discrete structures, and each include a biasing member, the biasing member of each locking member being positioned to cooperate with the other of the first and second locking members to normally bias the locking members towards the locked position.

A safety mechanism adapted for use with a medical device, the safety mechanism comprising:

• a housing defining an internal cavity;
• a shield member at least partially disposed within the internal cavity;
• and
• first and second locking members configured and dimensioned to selectively engage the shield member to maintain the shield member in one or more predetermined positions, wherein the first and second locking members are movable between a locked position, in which the first and second locking members are in engagement with the shield member to substantially prevent axial movement thereof, and a release position, in which the first and second locking members are disengaged from the shield member to permit axial movement of the shield member, wherein the first and second locking members are discrete structures, and each include a biasing member, the biasing member of each locking member being positioned to cooperate with the other of the first and second locking members to normally bias the locking members towards the locked position.