A medical needle assembly, comprising: a needle comprising a body and a tip, wherein the tip is disposed at a distal end of the needle, wherein the needle is movable from a first position to a second position; a catheter adapter comprising an inner wall, wherein the inner wall comprises an annular groove; a shield comprising: a first engagement arm, wherein a distal end of the first engagement arm comprises a first hook; and a second engagement arm, wherein a distal end of the second engagement arm comprises a second hook; characterized by a retention washer connected to the first engagement arm, a canting plate integrally formed with the retention washer; a spring, wherein the retention washer and the canting plate are connected by the spring, wherein when the needle is the first position, the needle is disposed between the first and second hooks thereby urging the first and second hooks and the engagement arms radially outward and positioning the first and second hooks in the annular groove, wherein when the needle is the first position, the needle is also aligned with a longitudinal axis of the medical needle assembly, wherein when the needle is withdrawn proximally from between the first and second hooks to the second position, the first and second engagement arms flex radially inwardly and disengage the annular groove, wherein when the needle is in the second position, the spring urges the canting plate into a canted condition and the canting plate engages an exterior of the needle 30. a needle comprising a body and a tip, wherein the tip is disposed at a distal end of the needle, wherein the needle is movable from a first position to a second position; a catheter adapter comprising an inner wall, wherein the inner wall comprises an annular groove; a shield comprising: a first engagement arm, wherein a distal end of the first engagement arm comprises a first hook; and a second engagement arm, wherein a distal end of the second engagement arm comprises a second hook; a first engagement arm, wherein a distal end of the first engagement arm comprises a first hook; and a second engagement arm, wherein a distal end of the second engagement arm comprises a second hook; characterized by a retention washer connected to the first engagement arm, a canting plate integrally formed with the retention washer; a spring, wherein the retention washer and the canting plate are connected by the spring, wherein when the needle is the first position, the needle is disposed between the first and second hooks thereby urging the first and second hooks and the engagement arms radially outward and positioning the first and second hooks in the annular groove, wherein when the needle is the first position, the needle is also aligned with a longitudinal axis of the medical needle assembly, wherein when the needle is withdrawn proximally from between the first and second hooks to the second position, the first and second engagement arms flex radially inwardly and disengage the annular groove, wherein when the needle is in the second position, the spring urges the canting plate into a canted condition and the canting plate engages an exterior of the needle 30. a retention washer connected to the first engagement arm, a canting plate integrally formed with the retention washer; a spring, wherein the retention washer and the canting plate are connected by the spring, wherein when the needle is the first position, the needle is disposed between the first and second hooks thereby urging the first and second hooks and the engagement arms radially outward and positioning the first and second hooks in the annular groove, wherein when the needle is the first position, the needle is also aligned with a longitudinal axis of the medical needle assembly, wherein when the needle is withdrawn proximally from between the first and second hooks to the second position, the first and second engagement arms flex radially inwardly and disengage the annular groove, wherein when the needle is in the second position, the spring urges the canting plate into a canted condition and the canting plate engages an exterior of the needle 30.