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Novel Pedicle Screw Assembly for Minimally Invasive Surgery

详细技术说明

Project ID: D2009-12/D2010-34Invention novelty: Improved structure for a retractable pedicle screw assembly. Pedicle screw assembly utilizes a self-drilling tip that terminates in a cutting tip that can remove bone material from a vertebra and includes an internally drilled threaded bore into which the cutting tip is withdrawn once pedicle screw is placed.  Value proposition: Tip portion of the pedicle screw assembly may be manually moved from the extended position to the retracted position to allow the final installation of the pedicle screw assembly Pedicle screw assembly may be mono-axial, having a fixed or unidirectional head permitting movement along one axis only; Avoids the use of fluoroscopic or other imaging or navigational techniques, saving time and significant radiation exposure; Initial advancement of drill tip is by use of the included impaction tool; Further advancement is by simple rotation of threaded pedicle screw assembly which cuts threads directly into the bone; Tip portion becomes permanently housed within the shank of the body portion and is left within the vertebra after installation of the pedicle screw assembly;Other embodiments and tip configurations, such as pyramidal, diamond, conical, spear, or any other desired shape or combination of shapes may be chosen to facilitate the system.Applications: May generally be used to secure a device to a bone, but may be used for any desired purpose or surgical procedure.IP Status: Issued U.S. Patent No. 8,343,201

*Abstract

*Principal Investigation

Name: Ashok Biyani, Associate Professor

Department: Orthopedic

Name: Gary Durivage, President

Department:

国家/地区

美国