Covetrus CH - Veterinary Instrumentation

15 Dental Equipment & Instrumentation 4 External Fixation

www.vetinst.com www.veterinary-instrumentation.co.uk

ESF Pins

Positive Threaded Pins - Cancellous

Positive Threaded Pins Positive threaded pins are the pin of choice for ESF application as they have excellent resistance to pull-out, and no inherent point of weakness. End threaded pins are used as half pins in Type IA and IB ESF frames. Centre threaded pins are used as full pins in Type II frames.

The coarser threads of these pins are appropriate for use in metaphyseal bone.

Positive Threaded Pins - Cortical

CANET0026 2.4mm Shank 3.5mm Threads 115mm Long Cancellous End Thread CANET0027 3.2mm Shank 4.8mm Threads 150mm Long Cancellous End Thread CANMT0029 2.4mm Shank 3.5mm Threads 150mm Long Cancellous Mid Thread CANMT0030 3.2mm Shank 4.8mm Threads 180mm Long Cancellous Mid Thread

End Thread

Trochar Pins

The fine threads of these pins are proud of the shank eliminating the weak point where the thread ends in other pins. The major benefit of positive threaded pins is that the additional thread diameter creates a larger bone pin interface for a given shaft diameter. This style of pin is useful where a good pull out resistance is required and where it is anticipated that the frames will be left in situ for long periods - 6 weeks plus.

CET0014 CET0013 CET0015 CET0016 CET0017 CET0018 CET0026 CET0019 CET0020 CET0020A CET0020B CET0021 CET0024A CET0022

0.8mm Shank 1.1mm Threads 60mm Long - End Thread 1.0mm Shank 1.3mm Threads 65mm Long - End Thread 1.2mm Shank 1.5mm Threads 65mm Long - End Thread 1.2mm Shank 1.6mm Threads 70mm Long - End Thread 1.4mm Shank 1.8mm Threads 70mm Long - End Thread 1.6mm Shank 2.0mm Threads 70mm Long - End Thread 1.8mm Shank 2.2mm Threads 80mm Long - End Thread 2.0mm Shank 2.4mm Threads 85mm Long - End Thread 2.4mm Shank 3.2mm Threads 100mm Long - End Thread 2.7mm Shank 3.5mm Threads 110mm Long - End Thread 3.0mm Shank 3.8mm Threads 120mm Long - End Thread 3.2mm Shank 4.0mm Threads 130mm Long - End Thread 3.5mm Shank 4.3mm Threads 130mm Long - End Thread 4.0mm Shank 4.8mm Threads 150mm Long - End Thread

The smooth shanks of trochar pins provide minimal pull out resistance, there is therefore little advantage to their use.When used, trochar pins should be placed at diverging angles to maximise pull-out resistance. 130mm long.

001556 001557 001558

Trochar Pin 2mm Trochar Pin 3mm Trochar Pin 4mm

Cortical Negative Threaded Pins Ellis Type

Mid Thread

The short fine negative thread engages the trans (far)cortex and the smooth shank engages the cis (near) cortex. The thread/shank junction (the weakest part of the pin) is positioned in the medullary cavity and protected from potential failure. Ellis type pins have better pull out resistance over Trochar pins and the angle of placement is not as critical.

The Mid Threaded Pin provides good pull out resistance in frames where the fixation pins are supported on either side of the limb by connecting bars. i.e.Type II frames.

CMT0013 CMT0014 CMT0015 CMT0016 CMT0017 CMT0018

0.8mm Shank 1.1mm Threads 85mm Long - Mid Thread 1.1mm Shank 1.4mm Threads 85mm Long - Mid Thread 1.2mm Shank 1.5mm Threads 85mm Long - Mid Thread 1.4mm Shank 1.8mm Threads 85mm Long - Mid Thread 1.6mm Shank 2.0mm Threads 85mm Long - Mid Thread*

Pin Diameter

Overall Length

001528 001529 001533 001550 001530

1.6mm Shank 2.0mm Threads 85mm Long - Mid Thread** CMT0018A 1.8mm Shank 2.2mm Threads 90mm Long - Mid Thread CMT0019 2.0mm Shank 2.4mm Threads 105mm Long - Mid Thread CMT0019A 2.2mm Shank 2.6mm Threads 105mm Long - Mid Thread CMT0023 2.4mm Shank 3.2mm Threads 105mm Long - Mid Thread CMT0023A 2.7mm Shank 3.5mm Threads 115mm Long - Mid Thread CMT0023B 3.0mm Shank 3.8mm Threads 120mm Long - Mid Thread CMT0024 3.2mm Shank 4.0mm Threads 130mm Long - Mid Thread CMT0024A 3.5mm Shank 4.3mm Threads 140mm Long - Mid Thread CMT0025 4.0mm Shank 4.8mm Threads 150mm Long - Mid Thread

Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin Ellis Pin

1.1mm 1.6mm 1.8mm 2.0mm

76mm 85mm 127mm 127mm 127mm 127mm 127mm 127mm 127mm 127mm

2.4mm - (3/32") 2.7mm - (7/64")

001550A

001551 001531

3.0mm

3.2mm - (1/8")

001551A

3.5mm 4.0mm

001552

*CMT0017 has a 16mm thread length. **CMT0018 has a 20mm thread length.

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