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| Engineering Design & Optimization Group |
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332 Leonhard Building Penn State University University Park, PA 16802 (814) 863-7523 |
A collaborative effort by faculty in: Mechanical & Nuclear Engineering and Industrial & Manufacturing Engineering |
  
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| About | Ryan Dziedzic | ||||||
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Title: Graduate Student (M.S.)
Department: Mechanical and Nuclear Engineering Office: 332 Leonhard Building Phone: (814) 863-7523 Fax: (814) 863-4745 E-mail: rpd126@psu.edu Project Title: Methodology for design of multifunctional tools for minimally invasive surgery Project Supervisor: Dr. Mary Frecker Project Description: Minimally invasive surgery (MIS) has many advantages over open surgery, such as decreased trauma and improved recovery time. Current MIS tools have significant limitations including lack of multifunctionality and dexterity. With the goal of improving current MIS procedures and extending the use of MIS to more difficult operations, this project will attempt to develop methods to design MIS tools that can efficiently perform multiple functions. A method has been developed which adds multifunctionality by incorporating compliant mechanisms into the design of tool end-effectors using topology optimization. An optimization routine developed in Matlab, utilizes an SLP algorithm to generate 3-D topology solutions. To achieve multifunctionality, a single topology allows multiple input loads to each produce distinct output deflections. This method has been effectively demonstrated to produce tool designs, and a combination grasper-scissors multifunctional tool is currently being manufactured. Work is currently being done to incorporate "smart materials" such as piezoelectric actuators into the tool end-effectors by specifying elements within the topology to be active elements. Smart materials will allow for more precise control of the tool, thus further increasing multifunctionality. Project Sponsor: The Whitaker Foundation Biomedical Engineering Research Grant Publications:
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