US Patent:
20080167721, Jul 10, 2008
Inventors:
Qi-Bin Bao - Marquette MI, US
Jeffrey L. Trudeau - Marquette MI, US
Thomas S. Kilpela - Marquette MI, US
Wade DePas - Ishpeming MI, US
Allison Koskey - Ishpeming MI, US
Brian P. Janowski - Marquette MI, US
International Classification:
A61F 2/44
A61B 17/56
US Classification:
623 1716, 623 1711, 606300
Abstract:
An implant retention device is provided to assist in restraining movement of a nuclear implant and to assist in preventing expulsion of the nuclear implant through an incision portal or defect in the annular wall. In one form, the implant retention device may include an elongated tensioning member having a portion configured to connect to the implant and at least one anchoring device disposed on the tensioning member, the anchoring device configured to at least partially penetrate spinal tissue such as the annulus, vertebral body, or other secure tissue.