Patent ID: 8747355

Claim:
A locking needle cover, comprising: a needle having a longitudinal axis and a distal tip; a housing attached with the needle, the housing configured to couple with a medical implement such that the medical implement and the distal tip of the needle are in fluid communication; a sleeve having a flange with a circumferential notch and at least a portion received in the housing, the sleeve configured to rotate about and translate proximally along the longitudinal axis from an initial position to a retracted position, the sleeve also configured to translate distally along the longitudinal axis from the retracted position to a locked position, a greater longitudinal length of the sleeve being received in the housing in the retracted position than in the initial position; indicia positioned along the sleeve, the indicia configured to indicate a longitudinal distance between a distal end of the sleeve and the distal tip of the needle, thereby providing an indication of the insertion depth of the distal tip of the needle into a body; and a locking member configured to pass through the circumferential notch in the flange in the sleeve when the sleeve is moved from the initial position to the retracted position, the locking member configured to engage with and be radially outwardly deflected by the flange in the sleeve when the sleeve is moved from the retracted position to the locked position, the locking member configured to inhibit proximal movement of the sleeve when the sleeve is in the locked position.