CH597836A5CH1003175ACH1003175ACH597836A5CH 597836 A5CH597836 A5CH 597836A5CH 1003175 ACH1003175 ACH 1003175ACH 1003175 ACH1003175 ACH 1003175ACH 597836 A5CH597836 A5CH 597836A5
Authority
CH
Switzerland
Application number
CH1003175A
Inventor
Michael Bertrand Devas
Original Assignee
Nat Res Dev
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nat Res DevfiledCriticalNat Res Dev
Publication of CH597836A5publicationCriticalpatent/CH597836A5/xx
A61B17/00—Surgical instruments, devices or methods
A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
A61B17/84—Fasteners therefor or fasteners being internal fixation devices
A61B17/86—Pins or screws or threaded wires; nuts therefor
A61B17/8625—Shanks, i.e. parts contacting bone tissue
A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper