Medical Device Simulation Using ANSYS


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Companies involved in R&D are under increasing pressure to produce complex, robust designs for less cost and in less time. Simulation is widely used as a primary design tool to help meet these demands. ANSYS, the world leader in simulation software, has developed the ANSYS Workbench Environment. 3D CAD data from all major CAD systems can be seamlessly imported and simulated in this virtual testing environment.

IDAC Ireland Ltd, CAE consultants and the ANSYS Channel Partner in Ireland, have the expertise to help you to exploit these advanced technologies to produce better products in less time. Contact us today to arrange a free consultation.

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Medical Device Simulation Using ANSYS

  1. 1. Medical Device Simulation Using ANSYS Derek Sweeney IDAC Ireland Ltd ANSYS, Inc. Proprietary
  2. 2. IDAC Company Background <ul><ul><li>CAE Consultants </li></ul></ul><ul><ul><li>Established in 1997 </li></ul></ul><ul><ul><li>4 Employees </li></ul></ul><ul><ul><ul><li>Derek Sweeney </li></ul></ul></ul><ul><ul><ul><li>Dr. Paul Fanning </li></ul></ul></ul><ul><ul><ul><li>Bob Moore </li></ul></ul></ul><ul><ul><ul><li>Barbara Leichtenstern  </li></ul></ul></ul><ul><ul><li>  ANSYS Channel Partner in Ireland </li></ul></ul><ul><ul><li>Members of Technology Network Alliance ( </li></ul></ul>
  3. 3. IDAC Company Activities <ul><ul><li>Consultancy </li></ul></ul><ul><ul><li>Training </li></ul></ul><ul><ul><li>Software Sales </li></ul></ul><ul><ul><li>European Projects </li></ul></ul><ul><ul><li>Customisation </li></ul></ul>
  4. 4. European Projects <ul><ul><li>BLOODSIM </li></ul></ul><ul><ul><ul><li>Simulation of cardiovascular and other biomedical problems </li></ul></ul></ul><ul><ul><ul><li>Provided simulation tools and methods to clinicians and medical device manufacturers </li></ul></ul></ul><ul><ul><li>GEMSS </li></ul></ul><ul><ul><ul><li>Grid Enabled Medical Simulation Services </li></ul></ul></ul><ul><ul><ul><li>As the Internet revolutionised access to information, the Grid will revolutionise accessibility to applications. GEMSS demonstrates how Grid technologies can be used to transform healthcare and enable Europe to lead that transformation. </li></ul></ul></ul><ul><ul><li>@neurIST </li></ul></ul><ul><ul><ul><li>@neurIST is focussed on cerebral aneurysms and intends to provide an integrated decision support system to assess the risk of aneurysm rupture in patients and to optimize their treatments. </li></ul></ul></ul>
  5. 5. Why Use Simulation? <ul><ul><li>Competitive World </li></ul></ul><ul><ul><li>R&D and Innovation is Key to Success </li></ul></ul><ul><ul><li>Design Cycle must be Compressed </li></ul></ul><ul><ul><li>Simulation to Design </li></ul></ul><ul><ul><ul><li>Better </li></ul></ul></ul><ul><ul><ul><li>Cheaper </li></ul></ul></ul><ul><ul><ul><li>Faster </li></ul></ul></ul>
  6. 6. Why Use Simulation? “ Novate are developing an innovative vena cava filter for treatment of patients who are at risk of deep vein thrombosis. The device must conform closely to the vena cava wall, but still provide sufficient stiffness and fatigue strength. “ To help to achieve this design balance, Novate have used IDAC’s services at each design iteration, to simulate deployment of the device inside the vessel and calculate fatigue life. Novate plans to commence a clinical trial in 2009.” 'At Abbott, we use simulations from the concept stage of stent design right through to finalization. At the concept stage, it is used for feasibility studies, sensitivity studies and design optimization. These allow us to better understand the behavior of different stent geometries and rapidly provide us with the information needed to make sound design decisions early in the design process.' says Erik Eli, Abbott Vascular, Santa Clara.
  7. 7. Medical Device Applications <ul><ul><li>Transcatheter Devices </li></ul></ul><ul><ul><li>Web Enabled Stent Applications </li></ul></ul><ul><ul><li>Stent Optimisation – Novate Medical </li></ul></ul><ul><ul><li>Knee Assist Device – Moximed </li></ul></ul><ul><ul><li>Composite Wheelchair – I Imagine Design </li></ul></ul><ul><ul><li>@neurIST – Role of Haemodynamics in Vascular Disease </li></ul></ul><ul><ul><li>@neurIST – Virtual Stenting </li></ul></ul>
  8. 8. Transcatheter Devices <ul><ul><li>Balloon Expanded & Self Expanding </li></ul></ul><ul><ul><li>Recoil </li></ul></ul><ul><ul><li>Shortening </li></ul></ul><ul><ul><li>Fatigue </li></ul></ul><ul><ul><li>Radial Strength/Stiffness </li></ul></ul><ul><ul><li>Bending (crimped and expanded) </li></ul></ul><ul><ul><li>Flat Plate Test </li></ul></ul><ul><ul><li>Flow Simulations of Stented Vessels </li></ul></ul>
  9. 9. Web Enabled Stent Applications
  10. 10. Stent Optimisation – Novate Medical
  11. 11. Stent Optimisation – Novate Medical
  12. 12. Stent Optimisation – Novate Medical
  13. 13. Knee Assist Device - Moximed
  14. 14. Knee Assist Device - Moximed
  15. 15. Knee Assist Device - Moximed
  16. 16. Composite Wheelchair – I Imagine Design
  17. 17. @neurIST – Role of Haemodynamics in Vascular Disease surface reconstruction 3 computer model flow prediction medical image surface reconstruction 1 surface reconstruction 2
  18. 18. @neurIST – Role of Haemodynamics in Vascular Disease <ul><li>Accepted “wisdom” Predicted the SAH patients? </li></ul><ul><ul><li>Size matters (7mm) 3/7 </li></ul></ul><ul><li>Proposed indices </li></ul><ul><ul><li>Aspect ratio (1.6) 5/7 </li></ul></ul><ul><ul><li>Size ratio (3) 1/7 </li></ul></ul><ul><ul><li>WSS 4/7 </li></ul></ul><ul><ul><li>Oscillatory shear index (0.40) 6/7 </li></ul></ul><ul><ul><li>Non-sphericity index (0.183) 6/7 </li></ul></ul><ul><li>The software is easy to use by clinicians </li></ul><ul><li>Results were interchangeable with Dr Marzo’s within 5 cases. </li></ul><ul><li>45 minutes clinician time + 2-3 hours computation </li></ul>
  19. 19. @neurIST – Role of Haemodynamics in Vascular Disease <ul><li>Size is not the best predictor of aneurysm’s rupture potential </li></ul><ul><li>Haemodynamic and shape indices may have greater influence on rupture potential </li></ul><ul><li>Strongest correlations found for Oscillatory Shear Index and Non-sphericity index </li></ul>
  20. 20. @neurIST – Virtual Stenting Comparison In-vitro vs. Virtual stent release
  21. 21. @neurIST – Virtual Stenting Validation Contrast fill-in/wash-out Enterprise Time density curves from the in-vitro experiment in the inlet (I, blue), in the aneurysm (A, pink) and in the aneurysm for the CFD simulation (A, green)
  22. 22. @neurIST – Virtual Stenting Silk Time density curves from the in-vitro experiment in the inlet (I, blue), in the aneurysm (A, pink) and in the aneurysm for the CFD simulation (A, green) Validation Contrast fill-in/wash-out