Covetrus CH - Veterinary Instrumentation

Dental Equipment & Instrumentation 15 External Fixation 4

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Bicortical Negative Threaded Pins

Pre-Drilling ESF Pin Tracts

Bicortical Negative Pins have had a bad reputation for early failure at the thread pin junction.Where selection of pin and frame are appropriate, failure of negative threaded pins is rare. The important criterion is thread diameter not shaft diameter. For any given thread diameter both positive and negative threaded pins are equally strong. Shaft Thread Thread Overall Diameter Diameter Length Length BCNET08 0.8mm 0.8mm 8mm 70mm BCNET10 1.0mm 1.0mm 10mm 70mm BCNET11 1.1mm 1.1mm 12mm 70mm BCNET13 1.3mm 1.3mm 12mm 70mm BCNET15 1.5mm 1.5mm 12mm 70mm BCNET16 1.6mm 1.6mm 20mm 70mm BCNET18 1.8mm 1.8mm 24mm 85mm BCNET20 2.0mm 2.0mm 24mm 85mm BCNET24 2.4mm 2.4mm 25mm 100mm BCNET27 2.7mm 2.7mm 30mm 110mm BCNET30 3.0mm 3.0mm 35mm 130mm BCNET35 3.5mm 3.5mm 40mm 130mm BCNET40 4.0mm 4.0mm 45mm 150mm BCNET50 5.0mm 5.0mm 50mm 150mm

Pre-drilling a pin tract hole in the bone into which the ESF pin is subsequently inserted is very important as the ESF pins do not have drilling ends. Insertion of an ESF pin directly into the bone may cause impaction, micro-fracturing of the bone and excessive heat production with bone necrosis, all of which can lead to pin loosening.A drill bit that is about 10% smaller than the shank (core) diameter of the pin, or at least 0.1mm smaller should be used.A slow speed (electric) drill at about 150rpm is advisable, using flush to cool the pin and minimise heat generated in the bone that could cause bone necrosis and pin loosening. An appropriate drill guide is used to protect the soft tissues and minimise drill wobble and skidding. Once the hole is drilled, a K-wire can be used to maintain the pin tract (before the drill guide is removed) so it can be easily re-identified once the ESF pin is ready to be inserted.

H090202 H090203 H090205 H090207 H090101 H090102 H090104 H090106L

1.9mm Pre-Drill For 2.0mm Shank Positive Pin 2.3mm Pre-Drill For 2.4mm Shank Positive Pin 3.0mm Pre-Drill For 3.2mm Shank Positive Pin 3.8mm Pre-Drill For 4.0mm Shank Positive Pin 1.5mm Pre-Drill For 2.0mm Shank Negative Pin 2.0mm Pre-Drill For 2.4mm Shank Negative Pin 2.7mm Pre-Drill For 3.2mm Shank Negative Pin 3.5mm Pre-Drill For 4.0mm Shank Negative Pin

Safety Cutter Surgical Finish To 4mm Capacity

ESFTissue Protector

Protection of soft tissue is very important when placing an ESF frame. Protection prevents tissues from getting wrapped around the drill bit, and helps to maintain access to the pin tract in the bone. Once a connecting bar with clamps is in position, pin placement through a drill guide presents a specific problem because standard drill guide tissue protectors cannot be removed once the pin is in position. The ESF Tissue Protector splits along its length to allow removal.The tip has small serrations to encourage grip on the bone surface.

Safety implant cutter which leaves a smoother cut end than a conventional cutter.Very useful for external fixation pins. Cut end is temporarily retained within the head rather than flying off. Maximum capacity 4mm. Cuts 5mm below the face of the cutter. Telescopic handles reduce the overall length from 470mm to 340mm to fit most autoclaves. Head strips for cleaning.

001229

001548

Safety Cutter Stainless Steel Cuts To 4.0mm Capacity 340mm Long

ESF Tissue Protector

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