US 2022/0175430 A1 · IMPLANTABLE COMPRESSION SCREWS

Abstract

A compression screw for applying compression at a bone joint. The compression screw includes an axial screw body extending from a distal end to a proximal end with the distal end including a series of bone engaging threads configured to be self-drilling and self-tapping and the proximal end including a head which defines a radially extending shoulder. At least one proximal rotary cutting structure is defined proximally of the bone engaging threads. The at least one proximal rotary cutting structure is configured to be self-drilling such that a proximal portion of the axial screw body cuts into and advances within a bone of the bone joint as the axial screw body is advanced. A method of inserting the compression screw is also provided.

Claims17

Dependent claims

A method for applying compression between a first bone portion and a second bone portion having a gap therebetween, the method comprising:

providing a compression screw having an outer sleeve and an inner bone screw, the outer sleeve having a non-threaded head which defines a radially extending shoulder, the inner bone screw being threadedly engaged with the outer sleeve;
inserting the compression screw in the first bone portion and the second bone portion as a single unit until a distal end of the inner bone screw reaches a final location in the second bone;
rotating the inserted outer sleeve to move the outer sleeve toward the inner bone screw while the the distal end of the inner bone screw remains at the same final location such that the radially extending shoulder of the outer sleeve contacts an outer surface of the first bone and compresses the first bone towards the second bone, wherein the final location of the distal end of the inner bone screw remains the same before and after the compression.

Dependencies are inferred from the claim text.

Implantable compression screws

Life of this patent

Implantable compression screws

Life of this patent

Abstract

Claims17