Bone Compression and Fixation Devices
AssigneeGenossis LLC
InventorAmit Sinha
Life of this patent
Estimating the term…
Abstract
A bone screw, for drawing first and second bone fragments together, includes a shaft having a distal section and a proximal section. The distal section has a first external male screw thread and a minor diameter. The proximal section has a second external male screw thread. A major diameter of the distal section is larger than a major diameter of the proximal section. The bone screw includes a sleeve that has an internal female screw thread configured to mate with the second male screw thread. A distal portion of the sleeve has an outer diameter. The outer diameter is equal to or smaller than the minor diameter of the distal section of the shaft.
Claims27
A bone screw for drawing first and second bone fragments together, comprising:
- a shaft having a distal section and a proximal section, the distal section having a first external male screw thread and a minor diameter, the proximal section having a second external male screw thread, a major diameter of the distal section being larger than a major diameter of the proximal section;
- and
- a sleeve having an internal female screw thread configured to mate with the second male screw thread, a distal portion of the sleeve having an outer diameter, the outer diameter being equal to or smaller than the minor diameter of the distal section of the shaft.
A bone screw system for drawing first and second bone fragments together, comprising:
- a bone screw including:
- a shaft having a distal section and a proximal section, the distal section having a first external male screw thread, the proximal section having a second external male screw thread, a major diameter of the distal section being larger than a major diameter of the proximal section;
- and
- a sleeve having an internal female screw thread engageable with the second male screw thread, the sleeve being configured to receive a first tool for rotating the shaft and sleeve together and a second tool for rotating the sleeve relative to the shaft;
- a tool including:
- a first tool portion configured to rotate the sleeve relative to the shaft;
- and
- a second tool portion configured to rotate the shaft and the sleeve together.
A wire device for drawing first and second bone fragments together, comprising:
- a wire having an external male thread;
- and
- a sleeve having an internal female thread configured to mate with the external male thread.
A method for drawing first and second bone fragments together, comprising:
- screwing a wire having an external male thread into a first bone fragment;
- sliding a sleeve having an internal female thread configured to mate with the external male thread along the wire without rotating the sleeve relative to the wire to abut a second bone fragment;
- rotating the sleeve relative to the wire to draw the second bone fragment toward the first bone fragment, a proximal portion of the wire extending proximally from the second bone fragment and the sleeve;
- and
- cutting and removing the proximal portion of the wire from the remainder of the wire.
A bone fixation device comprising:
- a distal end configured to attached to a first bone section and a proximal end configured to attached to a second bone section,
- a flexible body secured to the distal end and movably attached to the proximal end;
- and
- a plurality of cannulated rigid segments surrounding the body,
- wherein the segments are spaced and allow the body to flex when the body is in a first position relative to the proximal end and
- wherein the segments abut and prevent the body from being flexed when the plate is moved from the first position to a second position relative to the proximal end.
Dependencies are inferred from the claim text.