Patent ID: 8936467
Filing Date: 2015-01-20
Classification: A61C

Abstract:
1. A method for extracting an implant installed in a bone comprising: a) inserting a threaded extraction tool having a tapered threaded body into an implant cavity; b) causing the threaded extraction tool to rotate and thread into the implant cavity, the threaded extraction tool meeting an increasing resistance to rotation originated by an increasing friction between the threaded extraction tool and inner walls of the implant cavity, whereby the threaded extraction tool is caused to rotate by applying an increasing torque on said tool in order to overcome said increasing resistance to rotation; c) ceasing rotation of the threaded extraction tool when said torque applied on the threaded extraction tool to produce rotation of said tool has reached a specific maximum torque value; d) partially unthreading said threaded extraction tool relative to the implant; e) and without removing said threaded extraction tool from the implant, carrying out a plurality of repetitions of steps b) through d), wherein in each execution of step c) a greater specific maximum torque value is reached than in the previous execution of step c), until an osseointegrated connection between said implant and the bone breaks, thereby allowing the implant to be removed.