Minimally invasive counter-torque wrench system
US9980758B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 10, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/00234
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A minimally invasive counter-torque system may comprise a bone screw system, a counter-torque wrench, a set screw driver, a counter-torque wrench handle, and a removable set screw driver handle. A body of the counter-torque wrench may be positioned entirely within a space as defined by or between removable arms of a tulip head of the bone screw system, such that only the wings of the counter-torque wrench extend beyond a width of the bone screw system. In operation, the counter-torque wrench handle may be received on a proximal end of the counter-torque wrench and may be used to stabilize and prevent rotation of the counter-torque wrench and the bone screw system. Then, the removable set screw drive handle may be engaged to a proximal end of the set screw driver and may be used to fasten a set screw into the saddle of the bone screw system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.