Patent ID: 8147531
Filing Date: 2012-04-03
Classification: A61B

Abstract:
1. A compression pin for urging two bone regions together, the compression pin comprising: a pin body having a distal end, an opposed proximal end, a first threaded region positioned near the distal end, and a second threaded region positioned near the first threaded region, the first threaded region including a first thread extending from a first diameter, the first thread having a first leading surface that is at a first leading angle and having a first radius of curvature formed between the first leading surface and the first diameter, and the second threaded region including a second thread extending from a second diameter, the second thread having a second leading surface that is at a second leading angle that is at least two degrees different than the first leading angle, the second thread having a second radius of curvature formed between the second leading surface and the second diameter, wherein the second radius of curvature is at least two percent smaller than the first radius of curvature.