Effects of Bladder Geometry in Pneumatic Artificial Muscles
We present here modeling and experimental data on the actuation properties of artificial muscles constructed with varying bladder prestrain and wall thickness. The tests determine quasi-static force –length relationships during extension and contraction, for muscles constructed with unstretched bladder lengths equal to 55%, 66%, and 97% of the stretched muscle length and two different wall thicknesses. Actuator force and maximum contraction length are found to depend strongly on both the pres train and the thickness of the rubber, making existing models inadequate for choosing bladder geometry. A model is presented to be...
Source: Journal of Medical Devices, Transactions of the ASME - August 5, 2016 Category: Medical Equipment Source Type: research

A Review of Therapeutic Ablation Modalities
Understanding basic science and technical aspects is essential for scientists and engineers to develop and enhance ablative modalities, and for clinicians to effectively apply therapeutic ablative techniques. An overview of ablative modalities, anatomical locations, and indications for which ablations are performed is presented. Specifically, basic concepts, parameter selection, and underlying biophysics of tissue injury of five currently used therapeutic ablative modalities are reviewed: radiofrequency ablation (RFA), cryoablation (CRA), microwave ablation (MWA), high-intensity focused ultrasound (HIFU), and chemical abla...
Source: Journal of Medical Devices, Transactions of the ASME - August 5, 2016 Category: Medical Equipment Source Type: research

Effects of Varied Cortical Shells and Tooth Situations to the Structure Resonance in Dental Implantation 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Development of a Thin and Flexible Sensor System for Stress Evaluation of Contact Interface 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Design of a Compact High-Torque Actuation System for Portable Powered Ankle –Foot Orthosis 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Developing a Classification Algorithm for Plantarflexor Actuation Timing of a Powered Ankle –Foot Orthosis 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

A Novel Device and Technique for Trauma-Related Tube Thoracostomy 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Fluid –Structure Interaction Simulation of Cardiac Leads in the Heart: Developing a Computational Model for Use in Medical Device Design 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Temporal Discretization Errors Produce Minimal Effects on Vestibular Prosthesis Performance 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Effects of Grasp Frequency on the Dynamics of a Robotic Surgical Grasper 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Design of a Universal Instrumented Wheelchair Hand Rim 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Toward Hand Arthritis Diagnostics Using Smart Phones: Camera Distortion Effect Correction 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Rocker Shoes for Natural Immobilization of the Ankle During Single-Limb Support 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

A Rigid Mechanism With Uniform, Variable Curvature 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research

Design of an Ergonomic Wheelchair Drive System for Improved Shoulder Biomechanics 1
(Source: Journal of Medical Devices, Transactions of the ASME)
Source: Journal of Medical Devices, Transactions of the ASME - August 1, 2016 Category: Medical Equipment Source Type: research