Trauma | November 2021

UNIUM™ Small Bone and Trauma Power Tool

Andrew Sands, Michael Swords


The UNIUM™ Power Tool was designed for increased reliability, efficiency, and comfort of use for an enhanced surgical experience and improved outcomes. It is intended for use in traumatology and orthopedic surgery that may include drilling, reaming, burring, screwing, tapping, sawing, and setting pins and wires.

The power tool system consists of a modular handpiece for general use and a standalone reciprocating saw handpiece for cardiothoracic surgery (specifically for sternotomies) (Fig 1). The strength and durability of both UNIUM Handpieces is enhanced by a high-quality PEEK housing and a stainless-steel coupling. The UNIUM Handpiece is 18% more powerful than the Colibri II/Small Battery Drive II, although it weighs 19% less.

The UNIUM Power Tool has a different trigger mechanism compared to the Colibri II/Small Battery Drive II: The lower trigger is for forward operation and the upper trigger for reverse operation. The oscillation mode is activated by pressing both triggers simultaneously. Additionally, the handpiece can be put in “forward only mode”.

Fig 1 UNIUM™ power tool system.


You might also be interested in

Cannulated Screw System CSS+

Improving cutting performance and facilitating accurate screw insertion.

The new Variable Angle Locking Patella Plating System

The Variable Angle Locking Patella Plating System was developed to reduce complication rates.

VA-LCP Clavicle Systems

The next generation of internal fixation for the clavicle and a solution for fractures and injuries.

VA-LCP Distal Fibula Plates in titanium

Line extension enhancing the VA-LCP Ankle Trauma 2.7/3.5 System and introduction of an anatomic tray for the USF System.

FIBULINK Syndesmosis Repair System

The first adjustable syndesmotic repair system to enable precise, anatomical syndesmotic fixation.


Hazards and labeling

Due to varying countries’ legal and regulatory approval requirements, consult the appropriate local product labeling for approved intended use of the products described on this website. All devices on this website are approved by the AO Technical Commission. For logistical reasons, these devices may not be available in all countries worldwide at the date of publication. 

Legal restrictions

This work was produced by AO Foundation, Switzerland. All rights reserved by AO Foundation. This publication, including all parts thereof, is legally protected by copyright.

Any use, exploitation or commercialization outside the narrow limits set forth by copyright legislation and the restrictions on use laid out below, without the publisher‘s consent, is illegal and liable to prosecution. This applies in particular to photostat reproduction, copying, scanning or duplication of any kind, translation, preparation of microfilms, electronic data processing, and storage such as making this publication available on Intranet or Internet.

Some of the products, names, instruments, treatments, logos, designs, etc referred to in this publication are also protected by patents, trademarks or by other intellectual property protection laws (eg, “AO” and the AO logo are subject to trademark applications/registrations) even though specific reference to this fact is not always made in the text. Therefore, the appearance of a name, instrument, etc without designation as proprietary is not to be construed as a representation by the publisher that it is in the public domain.

Restrictions on use: The rightful owner of an authorized copy of this work may use it for educational and research purposes only. Single images or illustrations may be copied for research or educational purposes only. The images or illustrations may not be altered in any way and need to carry the following statement of origin “Copyright by AO Foundation, Switzerland”.

Check for more information.


If you have any comments or questions on the articles or the new devices, please do not hesitate to contact us

The brands and labels "approved by AO Technical Commission" and "approved by AO Foundation", particularly "AO" and the AO logo, are AO Foundation's intellectual property and subject to trademark applications and registrations, respectively. The use of these brands and labels is regulated by licensing agreements between AO Foundation and the producers of innovation products obliged to use such labels to declare the products as AO Technical Commission or AO Foundation approved solutions. Any unauthorized or inadequate use of these trademarks may be subject to legal action.