DIAG IM3 - Page 149

Dental Equipment & Instrumentation External Fixation15 4 Tel +44 0845114 130258 9596 8530info@vetinst.com info@vetinst.com Threaded ESF Pin with Olive Bicortical Negative Threaded Pins Used almost exclusively in the management of complex humeral fractures involving a variant on the ‘Y’ or ‘T’ fracture. The oliv e, positioned at the end of the threaded portion of the pin, acts as the screw head. Bone fragments may be compressed and incorporated into the external fixator frame. The bone fragment involved is usually the lateral condyle. Negative Bicortical 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.Virtually all human pins are negative threaded! BICORTICAL FINE NEGATIVE THREADED PINS CODE BCNET08 BCNET10 BCNET11 BCNET13 BCNET15 BCNET16 BCNET18 BCNET20 BCNET24 BCNET27 BCNET30 BCNET35 BCNET40 BCNET50 Shaft Thread Thread Overall Price Diameter Diameter Diameter Diameter 0.8mm 0.8mm 8mm 70mm £6.75 1.0mm 1.0mm 10mm 70mm £6.75 1.1mm 1.1mm 12mm 70mm £6.75 1.3mm 1.3mm 12mm 70mm £6.75 1.5mm 1.5mm 12mm 70mm £6.75 1.6mm 1.6mm 20mm 70mm £6.75 1.8mm 1.8mm 24mm 85mm £7.50 2.0mm 2.0mm 24mm 85mm £7.50 2.4mm 2.4mm 25mm 100mm £7.50 2.7mm 2.7mm 30mm 110mm £8.00 3.0mm 3.0mm 35mm 130mm £8.00 3.5mm 3.5mm 40mm 130mm £8.00 4.0mm 4.0mm 45mm 150mm £8.00 5.0mm 5.0mm 50mm 150mm £10.00 THREADED ESF PIN WITH OLIVE The much improved pull out resistance means that these pins can be placed parallel within the same bone fragment; useful when fragment is smaller or when aligning proximal and distal fragments. More prone to pin fracture than Ellis pins. Always use four pins on either side of the fracture if possible. Negative Pins (Ellis Type and Bicortical -VE Threaded) Insertion Data S 001529 BCNET16 S 1.1 H090100 1.6 - £23.18 £23.18 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 £17.25 £17.25 £19.25 £20.75 £15.75 £16.75 £17.75 £20.75 Self-Centring Drill-Guides - 2 S 1.5 H090101 001530 2.4 S/M 1.8 H090208 BCNET24 001550A 2.7 S/M 2.0 H090102 001551 BCNET30 £23.18 Drill bit code 001528 BCNET11 1.1 001550 BCNET20 Threaded ESF Pin with Olive Small 2.4mm Shank 33mm x 3.2mm Thread H090202 H090203 H090205 H090207 H090101 H090102 H090104 H090106L £7.50 £8.00 £8.50 Shank Size KE+ Clamp Pre Drill Size (mm) 001536 £23.18 PRE-DRILLS COARSE NEGATIVE THREADED PINS Pin Code Ellis Bicort Threaded ESF Pin with Olive Small 2.4mm Shank 25mm x 3.2mm Thread Threaded ESF Pin with Olive Medium 3.2mm Shank 40mm x 4.0mm Thread Threaded ESF Pin with Olive Large 4mm Shank 55mm x 4.8mm Thread 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. Otherwise 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. The thread on this pin is similar to a self-tapping cortical screw. The drilling tip is, again, the long Trochar. In young bone, use without predrilling; in older, hardened bone, use smaller pilot hole. Coarse Negative Threaded Pin 2mm Coarse Negative Threaded Pin 3mm Coarse Negative Threaded Pin 4mm 001534 001535 001537 Pre-drilling ESF Pin Tracts Coarse Negative Threaded Pins 001567 001568 001569 John Ferguson 3 S/M/L 2.3 H090203 001531 3.2 M/L 2.4 H090209 01551A BCNET35 3.6 M/L 2.7 H090104 001552 BCNET40 4 M/L 3.0 H090205 Whether it be for external fixation or screw application, it is desirable for implants to be positioned fairly centrally into bones. Sized for the most popular drill-bits, these devices will help achieve accurate positioning of pilot holes. SELF-CENTRING DRILL GUIDES CDG11 CDG15 CDG20 CDG25 CDG32 CDGSET BCNET50 5 L 3.5 H090106S H090106L 133 Self-centring Drill-guide for Ø1.1mm Drill 10mm spread Self-centring Drill-guide for Ø1.5mm Drill 12mm spread Self-centring Drill-guide for Ø2.0mm Drill 14mm spread Self-centring Drill-guide for Ø2.5mm Drill 18mm spread Self-centring Drill-guide for Ø3.2mm Drill 23mm spread Set of 5 Self-centring Drill-guides £95.00 £95.00 £95.00 £95.00 £95.00 £375.00