A screw holder for securing a screw having a longitudinal shank and a central axis, a spindle adjoining the front end of the shank and having a bore therethrough flush with a groove, configured and dimensioned for receiving an elastic component to secure a screw into a steady position while turning the screw in or out.
1. A method of securing a screw while implanting into a body comprising:
providing a screw having an aperture in a screwhead;
providing a device comprising:
a longitudinal shank having a central axis, a rear end and front end;
a spindle, located at the front end of the longitudinal shank and concentric to the central axis, having front and rear ends, a substantially polygonal-shaped cross-section with a plurality of rounded edges and a plurality of concave side surfaces, a groove substantially parallel to the central axis, and a borehole coextensive with the groove; and
a spring wire having top and bottom portions, and a bend positioned between the top and bottom portions, wherein the bottom portion is inserted into the borehole and the top portion is inserted into the grove and has a free end,
wherein the top portion projects transversely away from the central axis such that the free end of the top portion distal to the bend is further away from the central axis than any other portion of the top portion when the spring wire is unstressed, the spindle being receivable into a screwhead aperture of the screw so that the top portion of the spring wire secures the screw in position, and wherein the groove and the borehole are flush with one of the plurality of rounded edges and one of the plurality of concave side surfaces;
inserting the spindle into the aperture resulting in stress to the spring wire,
wherein upon application of the stress, the spring wire holds the screw in a steady position.
2. The method of claim 1 , wherein the screw is a bone or pedicle screw.
3. The method of claim 1 , wherein the groove and the borehole are flush with one of the plurality of concave side surfaces.
4. The method of claim 1 , wherein the elastic component can bend elastically substantially perpendicular to the central axis.
5. The method of claim 1 , wherein the top end of the elastic component is fixed in the groove.
6. The method of claim 5 , wherein the top end of the elastic component is bonded, soldered, or clamped into the groove.
7. A method of securing a screw while implanting into a body comprising:
providing a screw having an aperture in a screwhead;
providing a screw securing device comprising:
a longitudinal shank having a central axis, a first diameter, a rear end and a front end;
a spindle, located at the front end of the longitudinal shank and concentric to the central axis, having a width, a front end and a rear end, a substantially polygonal-shaped cross-section with a plurality of rounded edges and a plurality of concave side surfaces, a groove substantially parallel to the central axis, and a borehole coextensive with the groove, the width of the spindle being less than the diameter of the shank; and
an elastic component having top and bottom portions, and a bend positioned between the top and bottom portions, wherein the bottom portion is inserted into the borehole and the top portion is inserted into the groove and has a free end,
wherein the top portion projects transversely away from the central axis such that the free end of the top portion distal to the bend is further away from the central axis than any other portion of the top portion when the elastic component is unstressed, the spindle being receivable into a screwhead aperture of the screw so that the top portion of the elastic component secures the screw in position; and
inserting the spindle into the aperture so that the elastic component holds the screw in a steady position.