Patent ID: 9095397
Filing Date: 2015-08-04
Classification: A61B,A61C

Abstract:
1. An arrangement for insertion of an implant, the arrangement comprising an implant and a screwing tool, the implant having a male thread to facilitate fastening into a bone by the screwing tool, the implant having a receiving opening with at least a partially conical interior surface, whereby a pin of an attachment part can be connected to the implant after insertion of the implant by placement into the receiving opening of the implant, the screwing tool having a pin that has a conical exterior surface and engages in the receiving opening of the implant, the screwing tool being provided with a radially-expanded intermediate part positioned between the pin and a handle comprising a head part of the screwing tool, the radially-expanded intermediate part, when viewed in cross-section, increasing in diameter from the pin toward the handle and including a flat support surface forming a one-piece construction with the intermediate part of the screwing tool and lying perpendicular to a long axis of the screwing tool, the screwing tool further having a through hole and a tension screw positioned in the screw hole, the tension screw being connectable to the implant, the tension screw having a screw head in contact with an interior support surface provided in the through hole, the interior support surface being located between the pin and the flat support surface, and when viewed in cross-section, increasing in diameter in a direction extending away from the receiving opening of the implant so that a terminal portion of the interior support surface is substantially coplanar with the flat support surface, the conical exterior surface of the screwing tool being complementary to the conical interior surface of the implant and being maintained in pre-tension at least partially against the conical interior surface of the implant such that at least a pre-defined portion of the torque required for screwing in the implant can be transferred via a self-locking conical connection of the screwing tool and the implant.