• Libraries
    • Log in to:
    View Item 
    •   MSpace Home
    • Price Faculty of Engineering
    • Engineering Undergraduate Theses
    • Engineering Undergraduate Theses
    • View Item
    •   MSpace Home
    • Price Faculty of Engineering
    • Engineering Undergraduate Theses
    • Engineering Undergraduate Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Kerrison rongeur redesign

    Thumbnail
    View/Open
    17-Final Report.pdf (3.889Mb)
    Date
    2012-06-11
    Author
    McAllister, Timothy
    Neill, Cory
    Geyson, Kristopher
    Boresky, Robert
    Metadata
    Show full item record
    Abstract
    This report outlines the redesign of a Kerrison surgical instrument used by surgical staff at the Winnipeg Health Sciences Center (HSC). The primary goal of the redesign was to strengthen the current instruments while maintaining the vitally important ease of sterilization. Our team was also requested to determine any notable causes of failure in the current instruments. It was determined through physical testing and computer analysis that a significant weakness was evident in the cutting tip of the Kerrison. The center of the crossbar was noted to experience relatively high tensile strain along the top portion causing a bowing effect that was noticeable by the technical staff at HSC. Our redesign of the Kerrison comprises several new elements. These include multiple stages of sharpening to improve the service life of the instrument, a set of handles with varying geometries to accommodate the stage sharpening, and a redesigned hand rest for improved comfort. The material of the Kerrison was also altered to 420 martensitic stainless steel containing Molybdenum along with Titanium Nitride and Zirconium Nitride coatings to improve durability and corrosion resistance. Finite element analysis (FEA) was performed on a computer model of our redesigned Kerrison showing that the stresses experienced in various locations were reduced due to the stronger material that was chosen. During the FEA it was determined that a reduction in the height of the blade did not contribute significantly enough to a reduction in stress to warrant altering the geometry. Our design has been determined to fulfill the objectives set by our client. Consideration of the various elements in our design would lengthen the service life of the Kerrison while still being able to be easily accommodated in the current sterilization techniques at HSC [1-2].
    URI
    http://hdl.handle.net/1993/7886
    Collections
    • Engineering Undergraduate Theses [192]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of MSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    Statistics

    View Usage Statistics

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV