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Full-Text Articles in Engineering
A Concept For Direct Control Of Rotary Blood Pump Speed By Inlet Pressure, Ibrahim Seven
A Concept For Direct Control Of Rotary Blood Pump Speed By Inlet Pressure, Ibrahim Seven
ETD Archive
Heart failure remains a major health problem for the world. Heart transplantation is the most effective treatment for end stage heart failure. A major problem with heart transplantation is finding adequate numbers of appropriate donors. The lack of donor numbers in the world creates a significant clinical need for blood pumping devices. The ability of ventricular assist devices to relieve the consequences of less than terminal heart failure further creates a need for assist therapy. Current new ventricular assist devices are built around continuous flow technology. These nonpulsatile assist devices have had major clinical success in relieving symptoms and increasing …
Stress Shielding Minimized In Femoral Hip Implants A Finite Element Model Optimized By Virtual Compatibility, Christian E. Feldt
Stress Shielding Minimized In Femoral Hip Implants A Finite Element Model Optimized By Virtual Compatibility, Christian E. Feldt
Electronic Theses and Dissertations
Bone mechanics and traditional implant materials produce a recurring problem for patients of total hip arthroplasty (THA): the bone is “shielded” from the loading it has become accustomed to over many years of development. Bone adheres to what is called “Wolff’s Law”, meaning it is an adaptive structure which adjusts its geometry based on the loads experienced over its life (Pearson; Goldstein). As the new femoral hip implant transmits reduced stresses to the remaining bone, bone tissue atrophies at the interface, permitting loosening of the implant, pain, and thereby obliging additional surgery to correct the issue (Meade). In the present …