1. Trey DeLong Lacey Gorochow Brian Rappa Adam Vandergriff Sandra Wadeer

2. Problem Statement  Current tissue retractors are narrow, multiple retractors are required especially in obese patients NY times reports 34% adults are obese +Surgical Techs($20.00/hr*2-4hr/surgery*200k surgeries/year) Time of surgery increases as well  Previous team designed an adjustable retractor Complex and impractical for industrial production Prototype could not be used in surgery

3. Adaptor Design Requirements  Must fit multiple patient sizes and provide a clear view of the surgical site  Must be cost efficient  Must function adequately in the surgical procedure

4. Primary Objective Design a modular adaptor for retractors that:  Keeps back adipose tissue  Is easy to attach to retractor  Is simple to manufacture  Is ready for use in surgery

5. Preliminary Design  Wing-like structure  Attachment mechanism: Hook and slot Tapering method  Form by bending metal

6. Goals  Reduce total hip replacement surgery cost Less personnel in the operating room Less retractors needed for surgery  Increase vision and work room for the surgeon Increase efficiency of the surgery Reduce surgery time

7. Design Parameters  Easy to use  Small size  Simple design- easy to manufacture  Lightweight  Smooth  Biocompatible- stainless steel  Curve/size of modular adaptor

8. Performance Metrics  Retractor attachment work on 95% of patients Different size attachments  Costs Keep production costs minimal Predicted to be ~$300 for retractor and attachments

9. System and Environment  Role in surgery Increase view of region and allows access  Why its beneficial to the surgeon Reduce people near patient Reduce number of retractors Make surgery easier

10. Testing Methods  Verification  Validation  Hardware Testing  Stress Testing Pro/E Mechanical Analysis  Safety Testing

11. Next Steps…

12. References  http://www.bls.gov/bls/blswage.htm http://www.bls.gov/bls/blswage.htm  http://www.innomed.net/hip_rets_mis.ht m#Anchor-APC-49575 http://www.innomed.net/hip_rets_mis.ht m#Anchor-APC-49575  http://www.nytimes.com/2010/01/14/heal th/14obese.html http://www.nytimes.com/2010/01/14/heal th/14obese.html  http://www.orthosupersite.com/view.aspx ?rid=1889 http://www.orthosupersite.com/view.aspx ?rid=1889  http://www.zimmer.com/z/ctl/op/global/ac tion/1/id/8140/template/PC/navid/10427 http://www.zimmer.com/z/ctl/op/global/ac tion/1/id/8140/template/PC/navid/10427