26/11/2004
AO Technical Commission Approved

Screw Extraction Set

The Screw Extraction Set includes already existing and new instruments to enable screw removal in a minimally invasive procedure, especially in difficult situations.

Screws with a stripped hex can be removed with a left-threaded, conical hexagon socket set.

Pliers for Screw Removal, narrow

Furthermore, the set includes several specially designed instruments for screw removal, eg, Pliers for Screw Removal which features a very thin tip but still has a very strong grip. It has sharp edges at the tip to awl the bone if the screw is not pointing out.


Slim Screw Extraction Forceps

During explantation the screw might be striped out of the cortex or become trapped in the soft tissues.

The Slim Screw Extraction Forceps enable the removal of a screw with or without rotation of the screwdriver. The screw is grasped behind the screw head. The forceps arms are slim and stable. They are bent in a way that the closed forceps arms lay parallel and tight to the screwdriver shaft.

The forceps can also be used together with a screwdriver to support insertion by creating an angular stable connection between screwdriver and screw. This is relevant in low laying, funnel-like operation areas such as in pelvic surgery or a screw inserted by a minimal-invasive stitch incision.

The Slim Screw Extraction Forceps is available in two sizes for small and large screws/short and long screwdrivers.


Carbide Drill

If necessary, a destroyed hex can be drilled with a slightly larger special drill in such a way that a left-threaded chuck finds good hold or the head becomes separated from the shaft. Left-over screw shafts can (but dont have to) be removed with a hollow drill and a left-threaded sleeve.

The Carbide Drill is a special drill to bore up screw heads and/or hex. The special alloy and design enable very efficient drilling of metal. These drills come from the metalworking industry. Compared to the usual carbide drills, they are more aggressive and efficient. The drill is available in 4 and 6 mm diameter.

The length of the drill is fixed. If the length of the drill is not sufficient, the Drill Elongator provides additional extension.


Drill Suction Device

The drill suction device is very helpful in cases of problematic screw removal (either locked or conventional). It is indicated to guide, cool, lubricate, and aspirate drill debris when drilling into screw heads with damaged hex or with broken instrument in the hex (eg, screw driver or extraction bolt). The drill suction device allows an efficient aspiration of the drill chips (no debris in the soft tissue) while at the same time cooling and lubricating the drill bit. The lubricating provides the drilling procedurea craftsman never drills metal without cooling and lubricating. The drill sleeve provides guidance of the drill and protection of the surrounding soft tissue.

The drill suction device consists of one handle and five different attachable drill sleeves with a clip-on mechanism, fitting with the available drill bits for metal (HSS 2.5, 3.5, and 4.8 mm and carbide drill bits 4.0 and 6.0 mm). The handle can be connected to the normal existing suction system of the OR (the vacuum connection is compatible to standard suction device in OR) and to water or saline irrigation with a luer lock connection.

The system is very easy, safe, and quick to handle. All those who have used it once, recommend using it every time there is a need of overdrilling screw heads.

Using Drill Suction Device

a Debris.

b No debris due to use of drill suction device.

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. 


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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.

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Check www.aofoundation.org/disclaimer for more information.

 

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


"approved by AO Technical Commission" and "approved by AO Foundation"

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.

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