Applicator

An applicator comprising:

• a body via which a liquid to be injected passes;
• a needle mounted on the body and through which the liquid is to be injected;
• a retractable shroud movably mounted on the body for movement between an extended position and a retracted position by engagement with a surface through which the needle is to pass, the shroud in its extended position covering said needle while in said retracted position exposing a desired length of said needle;
• a trigger mounted on the body and which governs the delivery of liquid to the needle, said trigger being movable between an inoperative position and an operative position at which the liquid is delivered to said needle, said trigger in said inoperative position engaging the shroud to prevent movement thereof from its extended position;
• and
• a trigger lock mounted on the body and engaged by the shroud to be moved from a first position to a second position, said trigger lock in said first position engaging said trigger preventing movement thereof to said operative position while in said second position permitting movement of said trigger to said operative position.