Patent · US Active

Ultrasonic handpiece

US8057480B2 · kind B2 · utility

11Cited by

4References

10Claims

0Family size

Assignee

Stryker Trauma GmbH · CH

Inventors

Klaus Dorawa · Schwentinental, DE
Manuel Schwager · Zürich, CH
Marcel Aeschlimann · Ligerz, CH
Philipp Seiler · Widnau, CH

Key dates

Filing date	Jul 13, 2007
Grant date	Nov 15, 2011
Priority date	—
Expiry date	Sep 13, 2030

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2017/8655
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An ultrasonic handpiece is used for augmenting a bone screw. The handpieces comprise a housing, an ultrasonic converter shiftingly accommodated in the housing, and a sonotrode connected to one end of the ultrasonic converter. The sonotrode protrudes from the housing into the bone screw. An adjuster wheel is adjustably connected to the housing. A spring is provided the ends of which are supported by the ultrasonic converter and the adjuster wheel, respectively. The ultrasonic converter is preloaded in the direction away from the adjuster wheel by setting the adjuster wheel, thereby the sonotrode is urged with a selected force into the bone screw and the augmentation material is pressed out of the bone screw and into the bone.

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