1 / 25

Biomedical Device Laboratory

Biomedical Device Laboratory. Dr. Duncan Maitland Associate Professor – Department of Biomedical Engineering Texas A&M University Mary Biediger John Marshall High School Northside Independent School District – San Antonio, Texas. Facts about Stroke. 750,000 cases per year

euclid
Download Presentation

Biomedical Device Laboratory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biomedical Device Laboratory Dr. Duncan Maitland Associate Professor – Department of Biomedical Engineering Texas A&M University Mary Biediger John Marshall High School Northside Independent School District – San Antonio, Texas

  2. Facts about Stroke • 750,000 cases per year • 150,000 deaths per year (3rd leading cause of death) • 30,000 hemorrhagic strokes (treatable) • Leading cause of disability • $40 billion spent on treatment and rehabilitation annually

  3. Historical Treatment (since 1937) • Surgical Clipping – via craniotomy Still used today

  4. If it’s working, why change it? • Surgery on any one area may cause problems with speech, memory, muscle weakness, balance, vision, coordination, and other functions. • Blood clot or bleeding in the brain • Seizures • Stroke • Coma • Infection in the brain, in the wound, or in the skull • Brain swelling Source: http://health.nytimes.com/health/guides/surgery/brain-surgery/overview.html

  5. Timelines • Hospitalization – 5 to 7 days • Recovery time before returning to work – 6 to 12 weeks Source: http://www.umm.edu/news/releases/brain_aneurysm.htm

  6. Alternative Treatment (since 1991) Detachable coil embolization -Can reach previously inoperable aneurysms

  7. Risks • Catheter-related risks: Intra-arterial catheterization involves a risk of bleeding, infection and arterial damage. • Surgical risks: As with any invasive procedure, there is a slight risk of death or illness. • Approximately 7% of cases require additional treatment or surgery. Source: http://www.crrnc.com/dce.php#9

  8. Additional Complications • Surgery time (varies with number of coils being implanted) • Doctors not happy • Patients not happy • Customers not happy – product less likely to sell • Clots forming in the blood stream • Problems downstream

  9. Timelines • Hospitalization – 2 days • Recovery time before returning to work – about a week Source: http://www.umm.edu/news/releases/brain_aneurysm.htm

  10. Cutting Edge Treatment • SMP Foam – made to fill aneurysm

  11. Cutting Edge Treatment • Crimped to a cylindrical shape to be fed through a micro-catheter and actuated at the site.

  12. Why do it? • Catheter and Anesthesia • Foam is more biocompatible • Healing time significantly reduced *This is one aspect of the work going on in the lab. It is nearly ready for animal trials, not yet used in humans.

  13. Another treatment (currently in use) - Metal Stent Reinforce the weak artery wall Encourage normal blood flow Reopen partially blocked passages

  14. Angioplasty vs. Stent Source: http://www.heartsite.com/html/stent.html

  15. Stent use for aneurysm treatment • In combination with coiling • For “wide-neck” aneurysm. Source: http://www.muschealth.com/bin/h/a/stent%20bridging%20aneurysm%20neck%20to%20asisst%20coiling.jpg

  16. In the lab • SMP plastic tube

  17. Why do this? • Can you tell me

  18. What I will do • Use an MRI from a current patient

  19. What I will do • Make a model using 3D printer

  20. What I will do • Make a negative model

  21. What I will do • Create a SMP plastic stent to treat the aneurysm and test it in the model.

  22. Summary • Focus of the lab: • Design devices to treat aneurysms, fistulas, and stroke • Improve treatment options from what is currently used in practice • Use Shape Memory Polymers to create devices that will be more readily accepted by the human organism

  23. Acknowledgements • TAMU E3 program • NSF, NPI, and TWC • Dr. Duncan Maitland, PhD.

  24. Acknowledgements • John Horn – Graduate student who is graciously donating his time to teaching me about the work in the lab. • All of the graduate students in the biomedical lab who gleefully answer my queries about their various projects.

  25. Questions?

More Related