Biodegradable Anterior Cervical Fusion System Surgical Technique

Product Overview The Inion S-1™ Biodegradable Anterior Cervical Fusion System consists of plates and screws made of degradable co-polymers composed of L-lactic and D-lactic acid. These polymers have a long history of safe medical use and they degrade in vivo by hydrolysis into alpha-hydroxy acids that are metabolised by the body. Based on in vitro testing, the implants retain most of their initial strength up to 16 weeks and gradually lose their strength thereafter; bioresorption takes place within two to four years. The plates and screws contain radiopaque tantalum markers for postoperative...

Surgical technique 1. Determine the correct plate size 2. Contour the Inion S-1™ plate Once the graft is in place, the plate templates Using the plate holder, precondition the chosen can be used to determine the right size of the Inion S-1™ plate in the Inion Thermo+™ water Inion S-1™ plate. The plate holder can be used bath for approximately 1 minute. for positioning the template and is attached by positioning the distal end of the plate holder Soon after heating position the plate on the into the middle hole of the template and then cervical spine and contour the plate to the tightening the...

3. Insert the temporary fixation screws 4. Drill the screw hole Using the plate holder, place the contoured Inion It is advised that you always use the drill guide S-1™ plate at the desired level and insert at least whenever preparing screw holes in the Inion S-1™ one temporary fixation screw in each end of the plate. This allows the correct screw trajectory and plate, ideally in opposing screw holes. depth to be achieved as well as ensuring the plate is sufficiently seated to the bone. The drill bits are Once the plate is fixed into position, with colour coded. Each colour corresponds to a screw...

Surgical technique 6. Insert the first Inion S-1™ screw As with step 4, it is advised that you always use Load the desired Inion S-1™ screw on to the the drill guide when ever tapping the screw holes screwdriver supplied. Ensure the screw is seated in the Inion S-1™ plate. This allows the correct by applying a firm downward pressure when screw trajectory and depth to be maintained as engaging the screwdriver shaft into the Inion well as ensuring the plate is sufficiently seated to the bone. The taps, like the drill bits, are colour coded. Each colour corresponds to a screw depth. It is advised...

7. Finalise fixation of the plate Ensure you maintain downward pressure on the Repeat steps 4–6 for the second Inion S-1™ screw plate using the drill guide and on the screw using ideally in a position at the other end of the Inion The markers on the screwdriver shaft will Once you have positioned an Inion S-1™ screw in allow you to monitor the progress of the screw each end of the plate, ideally in opposing screw advancement. As the resistance increases and holes, remove the temporary fixation screws and screw advancement reaches its optimum, reduce repeat steps 4–6 for the remaining screw holes...

Ordering information Instruments Art. No. INS-9540 Drill bit 3.7 mm, stop for 12 mm screw INS-9541 Drill bit 3.7 mm, stop for 14 mm screw INS-9544 Drill bit 4.2 mm, stop for 14 mm screw Qty INS-9543 Drill bit 4.2 mm, stop for 12 mm screw INS-9542 Drill bit 3.7 mm, stop for 16 mm screw INS-9545 Drill bit 4.2 mm, stop for 16 mm screw SPN-5110 Single level plate, 21 x 19 x 2.0 mm INS-9546 Bone tap 4.5 mm, stop for 12 mm screw SPN-5111 Single level plate, 23 x 19 x 2.0 mm INS-9547 Bone tap 4.5 mm, stop for 14 mm screw SPN-5112 Single level plate, 25 x 19 x 2.0 mm INS-9548 Bone tap 4.5 mm, stop for...

Instrument trays

Surgical technique quick reference 1. Determine the correct plate size 2. Contour the Inion S-1™ plate 3. Insert temporary fixation screws 4. Drill the screw hole 6. Insert the first Inion S-1™ screw 7. Finalise fixation of the plate

INION OY Lääkärinkatu 2 FI-33520 Tampere, FINLAND tel: +358-10-830 6600 fax: +358-10-830 6601 email: [email protected] internet: www.inion.com This publication is not intended for distribution in the USA. INION INC 2800 Glades Circle Suite 138, Weston FL 33327 USA Toll-free tel: 866-INION-US tel: 954-659-9224 fax: 954-659-7997