Disposable self-shielding syringe guard

An injection device, comprising:

• a syringe comprising a barrel, a needle extending from a distal end of the barrel, and a needle protector cap detachably covering the needle;
• a radial element extending from the barrel;
• a body comprising open proximal and distal ends, and a cavity extending between the proximal and distal ends for receiving the syringe therein, the cavity having a cross-section for receiving the needle protector cap therethrough as the syringe is inserted into the cavity, the radial element contacting an inside surface of the body for preventing substantial lateral movement of the syringe within the cavity, the needle and needle protector cap at least partially extending beyond the distal end of the body when the syringe is received in the cavity;
• a shield slidably attached to the body, the shield having proximal and distal ends, the distal end of the shield having an opening through which the needle and the needle protector cap extend when the shield is in an unguarded position, the shield being slidable between the unguarded position and a guarded position wherein the needle is covered by the shield;
• and
• one or more detents on the shield for locking the shield in the guarded position.

A method for assembling an injection device, comprising:

• providing a body comprising open proximal and distal ends and a cavity extending therebetween;
• inserting a syringe into the proximal end of the body until a needle and needle protector cap extending from a distal end of the syringe extends through the open proximal end of the body;
• and
• deforming a portion of the body inwardly to contact a barrel of the syringe to prevent substantial lateral movement thereof within the cavity.

A method for assembling an injection device, comprising:

• providing a needle guard comprising open proximal and distal ends and a cavity extending therebetween;
• inserting a syringe into the proximal end of the needle guard until a needle and needle protector cap extending from a distal end of the syringe extends through the open proximal end of the needle guard;
• and
• deforming a portion of the needle guard inwardly to contact a barrel of the syringe to prevent substantial lateral movement thereof within the cavity.