Show simple item record

dc.contributor.supervisorLabossiere, Paul (Mechanical and Manufacturing Engineering)en_US
dc.contributor.authorMcAllister, Timothy
dc.contributor.authorNeill, Cory
dc.contributor.authorGeyson, Kristopher
dc.contributor.authorBoresky, Robert
dc.date.accessioned2012-06-11T18:39:12Z
dc.date.available2012-06-11T18:39:12Z
dc.date.issued2012-06-11
dc.identifier.urihttp://hdl.handle.net/1993/7886
dc.description.abstractThis 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].en_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectKerrisonen_US
dc.subjectrongeuren_US
dc.subjectredesignen_US
dc.subjectOssa Surgicalen_US
dc.titleKerrison rongeur redesignen_US
dc.typeinfo:eu-repo/semantics/bachelorThesis
dc.typebachelor thesisen_US
dc.degree.disciplineMechanical and Manufacturing Engineeringen_US
dc.contributor.examiningcommitteeElmekkawy, Tarek (Mechanical and Manufacturing Engineering)en_US
dc.degree.levelBachelor of Science (B.Sc.)en_US
dc.date.publishedDecember 2011


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record