Open Access. Powered by Scholars. Published by Universities.®

Biomedical Engineering and Bioengineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 3 of 3

Full-Text Articles in Biomedical Engineering and Bioengineering

Method For Improving Consolidation Of Powder Resin, David A. Pienkowski, Eric A. Grulke, Robert J. Jacob Sep 1998

Method For Improving Consolidation Of Powder Resin, David A. Pienkowski, Eric A. Grulke, Robert J. Jacob

Biomedical Engineering Faculty Patents

A method for improving consolidation of powder resin is provided. The method broadly includes the steps of: (1) sorting particles of the powder resin according to their diameter; (2) combining the sorted particles having a first diameter D1 with the sorted particles having a second diameter D2 so as to form a particle mixture; (3) applying a vibration to the particle mixture; (4) heating the particle mixture; and (5) delivering the particle mixture through a nozzle or into a mold. The particle diameters D1 and D2 are chosen so that once combined there is optimal close packing of the three-dimensional …


Multidirectional Ecg Coherent Optimal Timing Of Defibrillation Shocks, Abhijit R. Patwardhan, Fabio M. Leonelli Apr 1998

Multidirectional Ecg Coherent Optimal Timing Of Defibrillation Shocks, Abhijit R. Patwardhan, Fabio M. Leonelli

Biomedical Engineering Faculty Patents

A method for of delivering a defibrillation shock to a heart at an optimal time to stop ventricular fibrillation which involves obtaining an electrocardiogram of a heart in at least two directions, determining a time-coherency of the electrocardiogram based upon each of the at least two directions, and computing a tracking function from the time-coherency. An optimal time to apply a defibrillation shock to the heart is determined by locating a local maximum on the tracking function. The method utilizes spacia characteristics of the ventricular fibrillation. The method can be incorporated into implantable cardioverter defibrillators utilizing existing hardware technology.


Method For Reducing The Generation Of Wear Particulates From An Implant, David A. Pienkowski, Kwon-Yong Lee Jan 1998

Method For Reducing The Generation Of Wear Particulates From An Implant, David A. Pienkowski, Kwon-Yong Lee

Biomedical Engineering Faculty Patents

A method is provided for reducing the amount of wear particulates generated by a total joint orthopaedic implant. The implant consists of two matched articulating components wherein at least one of the components is made of polymer or other material with similar physical properties. The method includes the steps of placing the total joint orthopaedic implant in a fluid bath and articulating the implant in the fluid bath for at least 1,000 cycles. The articulation may be performed in three stages. In the first, the implant is articulated under a load of substantially 0.1-500 Newtons with sliding speeds of substantially …