Patent · US Active

Systems and methods for manipulating bone

US9949731B2 · kind B2 · utility

7Cited by

3References

24Claims

0Family size

Assignee

Medos International Sarl · CH

Inventors

Seetal Erramilli · Naperville, US
Grant Mellor · Cottles Bridge, AU
Frank Spratt · Bridgewater, US

Key dates

Filing date	Oct 7, 2015
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Mar 21, 2036

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2090/037
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Systems and methods are disclosed in which a distraction sleeve can be attached to a bone anchor assembly to lock or limit the polyaxial degree of freedom of the bone anchor assembly and facilitate true parallel distraction. In some embodiments, the distraction sleeve can lock polyaxial movement of the bone anchor assembly without directly engaging the shank of the bone anchor assembly, without directly engaging the exterior of the receiver member of the bone anchor assembly, and/or without requiring that a rod or closure mechanism be installed in the bone anchor assembly. The distraction sleeve can be preloaded onto the bone anchor assembly prior to inserting the bone anchor assembly using a selectively detachable driver, thereby providing simplified, streamlined insertion and facilitating use with protection and/or retraction sheaths. Countertorque tubes, torque wrenches, and other related instrumentation are also disclosed herein.

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