Splay control closure for open bone anchor
US8926672B2 · kind B2 · utility
31Cited by
342References
31Claims
0Family size
Inventors
Key dates
| Filing date | Nov 21, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Open implant closure structures include a helically wound guide and advancement flange form having splay control surfaces. Multi-start closures and closures with inner set screws have splay control contours for interlocking with cooperating flange forms of bone anchor receivers. Flange form heights, thicknesses and other geometry, such as splay control ramp angle may be varied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.