Bone Screw
US8636785B2 · kind B2 · utility
4Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Apr 20, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8645
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw (10) having a lead portion (12) and a tail portion (14), each comprising a root and a thread (22, 24) (having a thread lead) formed on the root. The thread on each of the lead and tail portions has an approximately constant diameter along a significant portion of its length. The diameter of the thread on the tail portion is greater than that of the thread on the lead portion, and in which the thread lead of the thread on the lead portion is equal to the thread lead of the thread on the tail portion. The screw can be used to achieve fixation to a vertebra with an anterior approach.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.