EZY-AIM Instrument Overview Guide Rev 7

F3 FEMORAL NAIL Attach the F3 Nail Holder (600062) to the Combo DTA Holder (610061).

Ensure the M8 Mounting Screw (632007) is fastened firmly using 6mm Hex Ball Driver (600045).

CANNULATED HUMERAL NAIL Attach the Cannulated Humeral Nail Holder (600075) to the Humeral DTA Adaptor (600077).

Then attach the Humeral DTA Adaptor (600077) to the Humeral DTA Holder (610105). Secure the Humeral DTA Holder (610105) using 3.5 Hex 250mm Screwdriver (610067).

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UNIVERSAL TIBIAL NAIL ANTERIOR-POSTERIOR ENTRY

Attach the Combo DTA Holder (610061) to the UTN & S2 Nail Holder (600083).

MEDIAL-LATERAL ENTRY

Attach the Combo DTA Holder (610061) to the Anterior Screw Guide (600084A).

Ensure the M8 Mounting Screw (632007) is fastened firmly using 6mm Hex Ball Driver (600045).

S2 SUPRACONDYLAR NAIL Attach the Combo DTA Holder (610061) to the Anterior Screw Guide (600084A).

Note: The S2 A-P holes are not accessible by Ezy-Aim. They are only used in free hand targeting

Ensure the M8 Mounting Screw (632007) is fastened firmly using 6mm Hex Ball Driver (600045).

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Distal Targeting Arm (DTA)

1.

To assemble the DTA and its attachments see below. 1.

Place the DTA (610046A) onto the DTA Holder with the length of the nail type facing out.

2.

Place the DTA onto the pivot point at the appropriate nail length.

2.

Note: Setting for 340mm Femoral Nail shown. For S2 Nails, use the lengths marked for Tibia.

3. 3.

Engage the Locking Knob (610050) on the DTA Holder and lightly tighten.

4. 4. Depending on surgeon’s preference, insert Static DTA Locking Sleeve (610046B-S) or Dynamic DTA Locking Sleeve (610046B-D) into the DTA ensuring the pin lines up. Set the semi-assembled unit aside.

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Calibration Calibrating the more Proximal Distal Hole 1.

Place the Ezy-aim Control Box (610055) near the surgeon but outside the sterile zone. Pass the ends of the Transmitter and Sensor cables to an unsterile person to attach to the Control Box. The cables are colour coded: yellow for Sensor and blue for Transmitter.

•

Turn on the Ezy-aim Control Box. Press ‘Proximal/Distal’ to select the Proximal hole.

2.

Pass the 4.5x340mm Drill (514534) through the Drill Sleeves and use the adjustment knobs on the DTA Holder (610060) to align the drill with the more proximal distal hole in the nail.

3.

Make sure the Drill is able to pass through the proximal hole in the nail freely.

1.

2.

3.

4.

4. Press ‘Set’ to Calibrate the Ezy-aim to the proximal hole.

Caution! To avoid interference from other instruments and equipment when setting, hold the instrument assembly so that the Ezy-aim Transmitter (610056) is up above the table, and more than 100mm from any other metal objects.

Surgical Technique | 13

Calibrating the Most Distal Hole 1.

1.

Keep the Sleeves and Transmitter in position over the more proximal hole and pass a second sleeve assembly through the distal hole of the DTA.

2.

Use the Adjustment Knobs on the DTA Holder and drill to align the Drill Sleeves with the Distal hole in the Nail. Normally no adjustment is needed for tibial and humeral nails, but a small adjustment may be needed for femoral nails.

2.

3.

Make sure the drill is able to pass through the distal hole in the nail freely.

3.

4.

4. Press ‘Proximal/Distal’ on the Ezy-aim Control Box (610055) to select the Distal hole. Press ‘Set’ to calibrate the Distal hole. •

Turn off the Ezy-aim Control Box.

The system is now calibrated to the Proximal and Distal Nail holes. It will need to be partially disassembled to insert into the patient.

Caution! To avoid interference from other instruments and equipment when setting, hold the instrument assembly so that the Transmitter is up above the table, and more than 100mm from any other metal objects. 14 | Austofix Surgical

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Disassemble Preparation for Nail Targeting 1.

Unscrew the M8 Mounting Screw (632007) from the Nail Holder.

2.

Separate the DTA assembly from the Nail Holder, keeping the rest of the assembly intact.

1.

2.

3. 3.

Remove the Ezy-aim Sensor (610057) from the Nail.

Note: For CHN Long procedures, the Ezy-Aim assembly including the Cannulated Humeral Nail DTA Adaptor (600077) must be removed following calibration and prior to nail insertion. The assembly can then be reattached once distal targeting is required after the nail has been inserted.

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Nail Targeting Nail Insertion 1.

1.

Insert Nail as per relevant Surgical Technique. Note: The setup must exclude any other metal objects within 100mm of the area of the distal screws. A traction table is preferred. If this is not used, the limb may need to be lifted up from the operating table when setting the Ezyaim.

2.

Insert Ezy-aim Sensor (610057) until Sensor Stop (610058) engages the Cannulated Nail Holding Screw. The Sensor Stop is kept set to the more proximal distal hole.

3.

Re-attach the assembled DTA and the Ezy-aim Transmitter (610056).

2.

3.

4.

4. Tighten M8 Mounting Screw (632007) untill firm. This can be done either by hand or with a 6mm Hex Ball Driver (600045).

Note: Check that no other metal objects are within 100mm of the targeting area. Also check that the Transmitter is free from contact with any other objects which might affect its alignment.

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Targeting the most Distal Hole 1.

Switch on the Ezy-aim Control Box (610055). Set proximal/distal display to ‘distal’. Turn adjustment knob to realign the Drill Sleeves with the distal nail hole untill the dot on the graphic display is centred and turns green. The distal hole of the nail is now aligned with the DTA (610046) and Drill Sleeves.

1.

2.

Make a 1cm stab incision and advance the Trocar (610063) through the Inner and Outer Sleeve assembly. Loosen the DTA Locking Sleeve Nut (610046B) allowing the Sleeve assembly and Trocar to advance through the incision to the bone. Lock this position using the Locking Nut on the DTA Locking Sleeve. Recheck alignment on the Ezy-aim graphic display and adjust as necessary.

2.

Note: Inadvertent movement of the Locking Knob will affect the alignment. Please check display regularly and adjust as required.

3.

The system is now ready for drilling of the distal hole. While drilling the hole, care must be taken to keep the targeting position aligned by maintaining the green dot in the distal hole in the graphic display.

3.

To check that the drill has passed through the Nail correctly, partially withdraw the Ezy-aim Sensor (610057), unlock the Ezy-aim Sensor Length Stop (610058), and advance the Ezy-aim Sensor until it is felt to hit the drill. Remove the Drill and Drill Sleeves and insert the screw following the relevant Austofix Nail Surgical Technique.

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Product Codes M8 Mounting Screw

632007

F1 DTA Holder

610045

F2, F3, UTN & S2 DTA Holder

610061

Humeral DTA Holder

610105

Distal Targeting Arm (DTA)

610046A

Dymanic DTA Locking Sleeve

610046B-D

Static DTA Locking Sleeve

610046B-S

Locking Knob

610050

Ezy-Aim Control Box

610055

Ezy-Aim Transmitter

610056

Ezy-Aim Sensor

610057

Ezy-Aim Small Sensor

610059

Ezy-Aim Sensor Length Stop Inner

610058A

Ezy-Aim Sensor Length Stop Outer

610058B

Ezy-aim Distal Targeting Tray (Empty)

621100

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