Patent Number: 6,248,105

Title: Device for connecting a longitudinal support with a pedicle screw

Abstract: The invention relates to a device for connecting a longitudinal rod with a bone anchoring element, such as a pedicle screw, thereby forming a system for fixation of the spine. The device includes a connecting member having upper and lower ends, a bore hole which is open at least towards the lower end and has a central axis, and a through hole positioned perpendicular to the central axis. The device also has a tensioning member insertable in the upper end of the connecting member for securing the bone anchoring element to the connector at a surgeon selected angle. A radially compressible spring chuck is arranged within the connecting member and has a cavity for receiving the head of the bone anchoring element. An insert slides into the bore hole of the connecting member and has a recess with a shape complementary to the outer surface of the spring chuck. The spring chuck is axially supported in the bore hole in such a fashion that radial movement of the spring chuck is not affected.

Inventors: Schlapfer; Fridolin (Glarus, CH), Hess; Martin (Holstein, CH)

Assignee: Synthes (U.S.A.)

International Classification: A61B 17/70 (20060101); A61B 017/56 ()

Expiration Date: 06/19/2018