TH58229B - Band nails for bones - Google Patents

Abstract

A bone screw which includes two (5; 7) helical segments that have been formed axially. In the tip of the screw And intermediation (6) DVS outer diameter of the threaded front (5) smaller than the DKH axis diameter of the threaded back (7) and the small intermediate DMS outer diameter (6). Than the DKV axial diameter of the front threaded part (5). Pressing them together and Adhesion of bone fragments That includes a) an embedded tool (15) that includes a center hole (17) that extends through the tool with a common axis so that b) a screwdriver (16) may be inserted through the center hole (17). ) As from the back end (19) of the tool (15) c) the center hole (17) was prepared with the internal screw (20) that has been formed in the front end (18) of the tool. (15) which compensates the external screw thread (9) that has been formed It rises in the helical back portion (7) of the bone-spinning tap (1) and extends from the fore (18) of the implant (15) to the depth T and d). The depth T is T> or equal to LL is the length of the back part (7) of the screw for the bone (1).

Claims (1)

1. Bone screw (1) for bonding two bone fragments including (A), longitudinal axis (2) forehead (3), posterior tip (4) and path (11) for receiving. Screwdrivers (16) on the rear end (4) also include (B) the front end threaded (5) extended with The axis is joined to the longitudinal axis (2) and is positioned along the Core in the fore end Containing external screw threads (8) with axis diameter DKV, DVS outside diameter and distance between threads Sv C).