Covetrus CH - Veterinary Instrumentation

15 Dental Equipment & Instrumentation 3 Internal Fixation

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

Drill Bits - Anti-Skid - Round Shank

Pre-Drilling ESF Pin Tracts

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.

Anti-skid drill bits have a special tip which bites into the bone surface, accurately positioning the hole. Particularly useful for holes which are not perpendicular to the bone surface, and where a drill guide is not used. Round shank multi-use drill bits made from hardened stainless steel, suitable for use with a standard Jacobs chuck.

Diameter

Total

Flute

(mm)

Length (mm)

Length (mm)

H090101AS H090208AS H090102AS H090209AS H090112AS H090104AS H090105SAS H090106SAS H090108SAS

1.5 1.8

90

20 25 30 30 30 40 40 50 50

110 110 120 120 130 130 130 130

2

2.4 2.5 2.7 3.2 3.5 4.5

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

Drill Bits - Cannulated - Round Shank & AO Fit

Drill Stops

For use with a 1.1mm guide wire for accurate placement of holes.

Round Shank

Round shank multi-use cannulated drill bits made from hardened stainless steel, suitable for use with a standard Jacobs chuck.

Diameter

Total

Flute

(mm)

Length (mm)

Length (mm)

H090112CAN H090104CAN H090106CAN

2.5 2.7 3.5

130 130 130

25 30 35

Drilling to a pre-measured depth can be a challenge.A drill stop is tightened onto the drill bit at the required depth.The Set includes 4 Stops to cover all the standard drill sizes. 1.5mm, 2.0mm, 2.5mm, 2.7mm, 3.2mm, 3.5mm and 4.5mm.The stop is tightened onto the drill bit using the hex driver provided.

Quick Release AO Fit Quick release multi-use cannulated drill bits made from hardened stainless steel, suitable for use with an AO style quick release chuck.

DRILLSTOP Drill Stop Set in Stainless Case

Diameter

Total

Flute

(mm)

Length (mm)

Length (mm)

S090112CAN S090104CAN S090106CAN

2.5 2.7 3.5

105 105 105

25 30 35

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