Segmented safety cover for needle delivery

A segmented safety cover comprising:

• a) a proximal segment fixed with a needle hub, said proximal segment also being integrated with a syringe body or a blood collecting needle;
• b) a distal end cap with a hollow bore that covers a needle tip through which said needle cannula may pass;
• c) a rigidly interlocked, torsion spring assisted centrally hinged toggle locking mechanism that covers the needle cannula, where said center segment comprises a hollow proximal cover segment and distal hollow cover segment linked through a central hinge;
• d) wherein said proximal cover segment and distal cover segment are configured with two vertical, contacting and abutting faces above said central hinge;
• e) wherein a proximal cover segment of said central toggle locking mechanism is hingedly connected to said proximal segment by a proximal hinge and said distal cover segment of said central toggle locking mechanism is hingedly connected to said distal end cap by a distal hinge;
• f) wherein the proximal hinge, distal hinge and central hinge are arranged in the form of an inverted triangle formed by a line connecting said proximal and said distal hinges that lies parallel to the cannula shaft and said central hinge defining a vertex of the inverted triangle below said proximal and distal hinges;
• and
• g) wherein an exposure position for a needle from within the cannula shaft is created only when the central hinge is elevated above the a line connecting said proximal and said distal hinges from the position of the central hinge as the vertex of the inverted triangle;
• wherein, when the two vertical abutting faces are in a safety mode abutting each other, a vector force passing through the central hinge towards the abutting faces, the vector forces causes the central hinge to elevate and rotate and the abutting faces to rotate away from each other.