Patent · US Active

Stripped pedicle screw driver bit

US9216044B2 · kind B2 · utility

7Cited by

6References

20Claims

0Family size

Assignee

Regents of the University of Minnesota · US

Inventors

David Nuckley · Minneapolis, US
David W. POLLY · Edina, US

Key dates

Filing date	Oct 5, 2012
Grant date	Dec 22, 2015
Priority date	—
Expiry date	Dec 10, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B17/8888
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A pedicle screw driver bit includes an elongated shank and a head. The shank includes a plurality of threads. The head is connected to one end of and configured to rotate relative to the shank. The head is configured to be received by a tulip connected to a pedicle screw. The threads of the shank are configured to engage a plurality of threads of the tulip such that when the shank is rotated the tulip is drawn into engagement with the head such that the shank, the head, the tulip, and the pedicle screw are substantially prevented from rotating relative to one another.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.