Cavity Resonator Wireless Power Transfer System for Freely Moving Animal Experiments.

Objective: The goal of this paper is to create a large wireless powering arena for powering small devices implanted in freely behaving rodents.

Methods: We design a cavity resonator based wireless power transfer (WPT) system and utilize our previously developed optimal impedance matching methodology to achieve effective WPT performance for operating sophisticated implantable devices, made with miniature receive coils (<8 mm in diameter), within a large volume (dimensions: 60.96 cm × 60.

Enhancing the versatility of wireless biopotential acquisition for myoelectric prosthetic control.

Objective: A significant challenge in rehabilitating upper-limb amputees with sophisticated, electric-powered prostheses is sourcing reliable and independent channels of motor control information sufficient to precisely direct multiple degrees of freedom simultaneously.

Approach: In response to the expressed needs of clinicians, we have developed a miniature, batteryless recording device that utilizes emerging integrated circuit technology and optimal impedance matching for magnetic resonantly coupled (MRC) wireless power transfer to improve the performance and versatility of wireless electrode interfaces with muscle.

Main Results: In this work we describe the fabrication and performance of a fully wireless and batteryless EMG recording system and use of this system to direct virtual and electric-powered limbs in real-time.

Magnetically Inserted Neural Electrodes: Tissue Response and Functional Lifetime.

Neural recording and stimulation have great clinical potential. Long-term neural recording remains a challenge, however, as implantable electrodes eventually fail due to the adverse effects of the host tissue response to the indwelling implant. Astrocytes and microglia attempt to engulf the electrode, increasing the electrical impedance between the electrode and neurons, and possibly pushing neurons away from the recording site.

Current state of craniofacial prosthetic rehabilitation.

Purpose: This study aimed to review the current state of the techniques and materials used to rehabilitate maxillofacial defects.

Materials And Methods: The MEDLINE and EMBASE databases were searched for articles pertinent to maxillofacial prostheses published from January 1990 to July 2011. The main clinical stages were the subject of analysis.