Invention Grant
- Patent Title: Orthopedic compression screw
- Patent Title (中): 骨科压缩螺丝
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Application No.: US12283777Application Date: 2008-09-16
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Publication No.: US08394132B2Publication Date: 2013-03-12
- Inventor: Derek S. Lewis , Deepa Mani , David B. Kay , Amanda Martin
- Applicant: Derek S. Lewis , Deepa Mani , David B. Kay , Amanda Martin
- Applicant Address: US OH Medina
- Assignee: Orthohelix Surgical Designs, Inc.
- Current Assignee: Orthohelix Surgical Designs, Inc.
- Current Assignee Address: US OH Medina
- Agency: Hudak, Shunk & Farine Co. LPA
- Main IPC: A61B17/58
- IPC: A61B17/58

Abstract:
A cannulated compression screw is used as an orthopedic implant and has a threaded distal end with an insertion tip that includes at least one and preferably two, three or four flutes to allow the screw to be self-tapping. Optionally, the screw also includes one or more reverse cutting flutes proximal to the insertion tip. The distal threads are cancellous threads having a generally constant minor diameter and a generally constant major diameter and a generally constant thread pitch. An intermediate portion of the screw is non-threaded and the proximal end includes a compression wedge or taper that has at least one, and preferably two to five flutes that terminate before the top of the screw. The proximal end further includes a radiused bevel to the terminal surface that includes a hexagonal torque driving recess. The diameter of the non-threaded shaft section is constant distal from the compression wedge to the distal tip where it defines the minor diameter of the threaded portion. The screw optionally includes a tapered insertion tip.
Public/Granted literature
- US20100069970A1 Orthopedic compression screw Public/Granted day:2010-03-18
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