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Novel Polysaccharide-derived Fixation Device for Anterior Cruciate Ligament (ACL) Reconstruction

Novel Polysaccharide-derived Fixation Device for Anterior Cruciate Ligament (ACL) Reconstruction. Team #13 Weekly Meeting Alexander Werne , Derek Holyoak, Benjamin Roberts. Faculty Advisor Dr. Krystyna Gielo-Perczak. Clients Dr. Sangamesh Kumbar Gloria Kolb. Summary of Timeline.

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Novel Polysaccharide-derived Fixation Device for Anterior Cruciate Ligament (ACL) Reconstruction

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  1. Novel Polysaccharide-derived Fixation Device for Anterior Cruciate Ligament (ACL) Reconstruction Team #13 Weekly Meeting Alexander Werne, Derek Holyoak, Benjamin Roberts Faculty Advisor Dr. KrystynaGielo-Perczak Clients Dr. SangameshKumbar Gloria Kolb

  2. Summary of Timeline • Finalize ANSYS Testing • Finalized SolidWorks drawings to Tom Mealy for 3D Printing in ME Lab • Visit Dr. Kumbar’s lab to evaluate heat press for molding technique • Molding of our devices from biodegradable material • Physical Testing in April

  3. Alternate Design Ideas • Since Dr. Kumbar expressed a desire to use a hamstring graft instead of a bone block graft, we have begun working on alternate designs for our device • Eliptical Cavity instead of circular to increase amount of material supporting the hamstring graft

  4. Alternate Device

  5. Device Testing in ANSYS Max Stress: 6.5e8 Pa Max Stress: 3.06e7 Pa

  6. Interference Screw Design • Pitch = 8 • Length = 30mm (typical for tibial design) • Diameter = 10mm • Threads dulled since used for securing soft tissue graft • Sharper on the tapered end of screw

  7. Interference Screw Design

  8. Interference Screw Testing in ANSYS

  9. Future Work • Finalize ANSYS Testing • Final SolidWorks Design for Manufacturing • Speak with Tom Mealy to 3D print a scaled-up version of our devices for next meeting

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