external fixation system - stryker - brochure.pdf · external fixation system. ... over 30% and...

EXTERNAL FIXATION SYSTEM

The Apex® Pin Fixation System is a one step procedurereducing insertion time and reducing insertion temperature.†

There are three types of fixation pins:

Self-drilling / Self-tapping Apex® Pins

The unique One Step Cutting Technology offers significantadvantages over traditional pins.

Apex Pins always act as a new drill, so there is no need to pre-drill

Their One Step Insertion and high cutting performanceleads to reduced operative time.

Reduced insertion temperatures due to reduced friction.

Blunt Apex® Pins

Designed with a smooth non-cutting tip for use in hard corticalbone or for use in zones where a previous fracture may haveoccurred. Blunt Apex Pins are based on the same technologyas One Step Pins, however due to their lack of a drill tip, BluntApex Pins require pre-drilling.

Blunt Apex Pins should be used when betterprotection of soft tissues is required.

Intended for use in the pelvis.

Transfixing Apex® Pins

Designed for use in double frames requiring a high degreeof stability.

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Cancellous Apex® Pins

Designed for use in metaphyseal / epiphyseal areas i.e. incancellous areas to ensure a higher pin stability and thereforea higher frame stability. Note that Cancellous Apex Pinsrequire pre-drilling.

Titanium Apex® Pins

Titanium Apex Pins offer the same One Step CuttingTechnology as the self drilling / self tapping pins i.e.:

Titanium Apex Pins always act as a new drill, so there is no need to pre-drill

One Step Insertion and high cutting performanceleads to reduced operative time

Reduced insertion temperatures due to reduced friction

Titanium alloy Ti6Al-4V offers an excellent biocompatibilityand is particularly recommended for patients

Requiring MRI or CT scans since titanium alloy reduces image distortions

Allergic to nickel contained in Stainless Steel

Titanium alloy Ti6Al-4V has been chosen for titanium ApexPins due to

Its hardness which is equivalent to 316L Stainless Steel (37 HRC) and superior to pure titanium (17 HRC) whose pin tip may be damaged during insertion

Its greater resistance to fatigue than pure titanium

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The Apex® Pin Fixation System uses an advanced cylindricalthread profile that is designed to improve anchorage and pull-out resistance.

Apex One Step Pins have a tip design, that providesoptimal cutting conditions during the drilling phase.

A U-shaped thread increases contact with the bone byover 30% and optimises the stress distribution in the bone by reducing radial cortical tension.

A unique double helical flute creates homogenous threadprofiles and evacuates bone chips to the rear.

These design features have significantly reduced insertion time and temperature, and have improved anchorage conditions. The axial force and the torque required to insert the pins have also been significantlyreduced.†

Self-drilling tip

Self-tappingsection

U-shaped thread

Cutting Technology

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Positive cutting angle improves cortical contact

Act as a drill bit and a screw simultaneously.

Allow an accurate drilling of the second cortex.

Minimise cortical protrusion due to a shorter tip pointwhich reduces soft tissue damage.

Reduce insertion moments due to improved cuttingparameters.

Reduce insertion temperature tobelow 50°C.

Reduce operative time due totheir one step procedure.

Improve the cutting of the threaddue to a better evacuation ofbone chips through a uniquedouble helical flute.

Reduce risk of cortical damagedue to uniform stressdistribution.

Provide improved anchorage

Improve frame stability

Reduce risk of infection

Improve fatigue and pull out resistance

Advanced Cutting Tip

Designed to:

Designed to:

Advanced Thread Profile

50°C

The advanced cutting technology combined with the advanceddesign of the tip of the pin allows high cutting performanceswith an optimal bone debris removal.

This combination provides a positive influence on the followingparameters which are of vital importance for pin stability:

Pin stability is vital to the success of external fixation because,whatever the external fixation components and whatever theframe constructions, if the pin stability is not good a stableframe construction cannot be reached.

Cutting Technology Summary

Lower insertion forces

Lower friction between bone andmetal during pin insertion

Lower insertion temperature

Lower rate of bone necrosis

Higher pin stability

Conical design may lead to loosening

Radial compression may lead

to cortical damage

Conical Design Looks OK in Theory, But…

Need for pre-drilling means two step insertion procedure.

High pressure on bone during insertion and increased riskof thermal necrosis during the pre-drilling phase.

Risk of loosening due to the conical design.

Impossible to back-up the pin if the tip protrudes too far.

Competitive Design

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7

2’000

N/m 10-3

2’000

2’000

2’000

2’000

1,675.4

860.0

364.8

5 mm

6 mm

4 mm

Pin BiomechanicsThe effect of pin diameter on axialframe stiffness.†

Drill sleeves are imperative in order to protect soft tissues.

Don’t tap the trocar. Turn anticlockwise for a few turnsto create an insertion point and then proceed clockwise.

Drill sleeves can be utilised together with the clamps or with the insertion guide.

Use Stryker® Trauma Drill Brace!!Apex® Pins have an integrated safety feature to reducepotential breakage of the pin tip. Apex Pins must be usedwith a Stryker® Trauma drill brace to effect this feature.

Increased drilling sensitivity.

Better feeling of the second cortex.

Integrated safety featurereduces potential tip breakageunder high insertion forces

In external fixation the global stiffness, stability and elasticity of frames is strongly influenced by the configuration i.e. thenumber of rods, pin placement, pin diameter and the numberof pins.

Pin PlacementA bigger distance between pins induces a higher frame stabilityi.e. it is recommended to place the pins in the extreme holes ofthe clamps when it is possible.

Pin Diameter The choice of pin diameter should be determined by takinginto account all the following parameters:

Stability Size of bone

Anatomical location Soft tissues

Rigidity / elasticity

When comparing axial frame stiffness a 1mm increase in pindiameter will approximately double frame stiffness.

However, as a general rule, we can consider that:Minimum pin shaft diameter = Cortical bone thickness / 2

Number of PinsThe number of pins is dependent on

Efforts on the frame (lengthening)

The frame stiffness to be reached

By adding pins, the frame stiffness will be increased.

Instrumentation

Pin Characteristics

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Compatibility between the Apex® Pins and theStryker® Trauma External Fixation Systems

Stryker® Trauma Components Stryker® Trauma Apex® Pin Shaft Diameters

Hoffmann® II pin to rod coupling (4920-1-020) Ø 4mmØ 5mm

Hoffmann® II pin clamp (4920-2-020) Ø 4mmØ 5mmØ 6mm

Hoffmann® II Compact™ pin to rod coupling (4940-1-020) Ø 3mmØ 4mm

Hoffmann® II Compact™ clamp (4940-2-020) Ø 3mmØ 4mm

Hoffmann® II Compact™ peri-articular clamp (4940-2-200) Ø 3mm

Triax™ pin clamp red (5150-3-075) Ø 5mmØ 6mm

Triax™ pin clamp blue (5150-3-070) Ø 4mmØ 5mm

Triax™ pin clamp yellow (5150-3-065) Ø 3mmØ 4mm

Triax™ single pin clamp red (5150-3-175) Ø 5mmØ 6mm

Triax™ single pin clamp blue (5150-3-170) Ø 4mmØ 5mm

Triax™ single pin clamp yellow (5150-3-165) Ø 3mmØ 4mm

Tenxor™ pin post (4936-2-030) Ø 4mmØ 5mmØ 6mm

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Dimensions (mm)Cat No. Shaft & Thread Total Thread Cat No.

Diameter Length Length

Products

Self Drilling/Self Tapping

5038-5-060 3 60 105038-1-080 3 80 105038-2-080 3 80 155038-5-080 3 80 205038-1-110 3 110 105038-2-110 3 110 25

5023-1-090 4 90 105023-2-090 4 90 205023-3-090 4 90 305023-3-120 4 120 305023-5-120 4 120 355023-5-150 4 150 405023-6-150 4 150 505023-4-180 4 180 405023-6-180 4 180 50

TITANIUM5018-3-120 5 120 305018-5-120 5 120 35 5016-5-1115018-5-150 5 150 40 5016-5-117 5018-6-150 5 150 50 5016-5-1185018-6-180 5 180 50 5016-5-1225018-8-180 5 180 605018-5-200 5 200 505018-6-200 5 200 605018-5-250 5 250 505018-7-250 5 250 70

5021-7-150 6 150 505021-6-180 6 180 605021-8-200 6 200 705021-8-250 6 250 80

Blunt

5036-2-060 3 60 105036-1-080 3 80 10

5036-1-580 3 80 15

5036-2-080 3 80 20

5036-1-110 3 110 10

5036-2-110 3 110 25

5027-1-090 4 90 105027-2-090 4 90 205027-3-090 4 90 305027-3-120 4 120 305027-4-120 4 120 355027-4-150 4 150 405027-5-150 4 150 505027-4-180 4 180 405027-5-180 4 180 50

Apex® Pins Range

Cancellous

5015-3-120 5 6 120 355015-4-150 5 6 150 405015-5-150 5 6 150 505015-6-180 5 6 180 605015-7-250 5 6 250 70

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Dimensions (mm)Cat No. Shaft Thread Total Thread

Diameter Diameter Length Length

Products

Transfixing

5030-3-200 4 5 200 355030-4-200 4 5 200 405030-5-200 4 5 200 505030-3-250 4 5 250 355030-4-250 4 5 250 405030-5-250 4 5 250 505030-6-250 4 5 250 605030-4-300 4 5 300 405030-5-300 4 5 300 505030-7-300 4 5 300 70

Dimensions (mm)Cat No. Shaft & Thread Total Thread

Diameter Length Length

Blunt continuation

5020-3-120 5 120 305020-6-120 5 120 355020-3-150 5 150 405020-7-150 5 150 505020-7-180 5 180 505020-8-180 5 180 605020-7-200 5 200 505020-6-200 5 200 605020-7-250 5 250 505020-8-250 5 250 70

5019-7-150 6 150 505019-6-180 6 180 605019-8-200 6 200 705019-8-250 6 250 80

Apex® Pins Range

Catalogue DescriptionNumber

5057-0-100 Apex® Drill Guide Assembly

5057-0-200 Drill Brace Assembly for 3mm/4mm/5mm/6mm Apex® Pins

5057-3-100 3mm Predrilling Assembly-Short

5057-3-200 3mm Predrilling Assembly-Long







5085-1-222 Drill 2.2mm for 3mm pins




5057-9-900 Apex® Pins and Instrumentation Storage and Sterilisation Tray

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Instruments

Stryker®, Hoffmann® II, Monotube®, Apex®, Tenxor™, Compact™ and Triax™are trademarks of Stryker Corporation.

Hoffmann®II Swiss Patent Application: 01-709/94-3. Other Patents Pending. * Patents: EU 385,929; 374,093;Canada 1,193,506; U.S. 5,160,335 and 5,207,676. ** Swiss Patent Application: 02-709/94-3. Other Patents Pending.*** Patents: EU 190,990; U.S. 4,784,125; 5,095,919. **** Patents: EU 230,856; Swiss CH 671,150; U.S. 4,978,350.†Data on file at Stryker® Howmedica Osteonics USA.

Manufacturing location5 chemin des AulxCH-1228 Plan-les-OuatesGeneva, SwitzerlandTel: 00 41 22 884 0111Fax:00 41 22 884 0199

Cat No: 5075-4-000

© 2001 Stryker Corporation. All rights reserved.1101

MANUFACTURER:

Unilateral frame system designed to handle a wide variety of fracturesand limb-lengthening applications. This simple, colour-coded systemoffers both dynamic and carbon tubes for individualised performanceand economy. True simplicity, versatility, and economy.

Modular frames which allow for true independent pin placement.Completely compatible with Original Hoffmann® components, this newsystem improves flexibility and ease-of-use, while enhancing frameeconomics through minimal componentry. It’s external fixation with a“snap.”

Designed to complement the anatomy of the distal radius by allowing independentmovement of its clamps in multiple planes. Standard unilateral or bi-lateral bridgingframes for intra-articular fractures and peri-articular non-bridging frames for extra-articular fractures. Fully compatible with the Hoffmann® II System, based on aspring-loaded snap-fit mechanism that improves flexibility and ease-of-use.

The DJD II is a Dynamic Elbow Joint Distractor. Fully compatible withthe Hoffmann® II Compact™ System, it is designed to treat post-traumatic elbow stiffness as well as acute elbow trauma fractures.

The Tenxor™ System is a hybrid system providing advanced technologyand ease of application. Fully compatible with Hoffmann® II andMonotube® Triax™, based on a spring-loaded, snap-fit mechanism thatimproves flexibility and ease of use.

Every Fixator incorporates the high quality pin-to-bone interfaceprovided by Apex® Pins. The Apex® Pin cuts more sharply with lesstorque, friction and heat upon insertion improving purchase whileminimising the risk of pin tract problems.† Available in self-drilling andblunt tip designs, only from Stryker® Howmedica Osteonics!

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