Medical

Sensory Feedback System for Prosthetic Hand Using Interferential Current

This sensory feedback system would help amputees execute fine tasks or handle delicate objects easily. A new type of sensory feedback system for a myoelectrically controlled biomimetic prosthetic hand was developed. One of the characteristic features of the human neuromuscular control system is the increase in the compliance around a joint with decreasing activity of a muscle. Interferential current that uses two waves and interferences was used to synthesize a low frequency in the body. One frequency was fixed at 4,000 Hz and the other frequency was changed from 3,700 Hz to 4,000 Hz. As a result, stimulus frequency in the body was changed from 0 Hz to 300 Hz. It was measured that the subjects could distinguish the change of stimulus frequency, and confirmed that the interference current is a useful method for sensibility feedback of a prosthetic hand.

Posted in: Bio-Medical, Sensors, Implants & Prosthetics, Medical, Briefs, TSP, MDB

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Remote Diagnostic Technology for Hearing Assessment

Clinicians can remotely assess, diagnose, and remedy hearing loss. Individuals with hearing loss need to have ready access to hearing screenings, assessments, treatment, and consultation. This diagnostic technology facilitates early detection and intervention of hearing loss. It allows for improved monitoring and expands service scope, reach, and access. By reducing or eliminating travel times, it is also a more efficient utilization of time for audiologists and professional staff. The tele-hearing device and protocol provides clinicians the tools and the ability to remotely assess, diagnose, and remedy hearing loss. This is accomplished either directly or indirectly by facilitating assistance to other less experienced clinicians remotely.

Posted in: Bio-Medical, Electronics & Computers, Electronics, Medical, Patient Monitoring, Briefs, MDB

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Three-Dimensional Near-Infrared Imaging of Pathophysiological Changes Within the Breast

New reconstruction method improves the quantitative and qualitative accuracy of NIR images. This project aims to improve the estimation of functional properties of breast tissue in near infrared (NIR) imaging. This imaging technique (also known as diffuse optical tomography (DOT)) is noninvasive and non-ionizing, and can be routinely used to characterize the breast tissue. In this technique, fibers placed on the boundary of the breast deliver NIR light (600 nm to 950 nm) and collect the propagated diffused light (the patient fiber-optic setup is shown in the photo). The attenuation and scattering of light through breast tissue volume provide an estimation of functional properties using a model-based approach.

Posted in: Bio-Medical, Medical, Diagnostics, Briefs, TSP, MDB

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Software Corrects for Inhomogeneities in Digital Radiographic Images

The corrected digital image can be used to enable computer-assisted diagnosis. When radiographic images are recorded, they are subject to inhomogeneities due to the construction of the radiation source and to the properties of the detection medium (detector or screen). As a result, erroneous results may appear when the digital images are processed to enhance diagnostic relevance. Software described here allows for the correction of these inhomogeneities, before any further processing of the digital images is undertaken.

Posted in: Bio-Medical, Software, Medical, Diagnostics, Briefs, MDB

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Nano-Pervaporation Membrane With Heat Exchanger Generates Medical-Grade Water

A small system produces high-quality water using a heat exchanger that meets requirements for evaporation of substances such as pharmaceuticals and vitamins. A nanoporous membrane is used for the pervaporation process in which potable water is maintained, at atmospheric pressure, on the feed side of the membrane. The water enters the non- pervaporation (NPV) membrane device where it is separated into two streams — retentate water and permeated water. The permeated pure water is removed by applying low vapor pressure on the permeate side to create water vapor before condensation. This permeated water vapor is subsequently condensed by coming in contact with the cool surface of a heat exchanger with heat being recovered through transfer to the feed water stream.

Posted in: Bio-Medical, Electronics & Computers, Electronics, Medical, Briefs, MDB

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Wireless Brain Implant Using a Telemetric Electrode Array System

A 3D intra-cortical electrode array is embedded for signal acquisition, processing, and wireless communication. The ability to monitor the activities of ensembles of single neurons is critically important in understanding the principles of information processing in the brain that underlie perception, cognition, and action. Multiple microelectrode recording using appropriate neuronal implants provides this ability. The Telemetric Electrode Array System (TEAS) project aims at developing and embedding a three-dimensional intra-cortical electrode array with all electronics required for signal acquisition, processing, and wireless communication entirely into the head.

Posted in: Bio-Medical, Electronics & Computers, Electronics, Implants & Prosthetics, Medical, Briefs, TSP, MDB

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Digital Wound Measurement and Tracking System

This Web-based platform tracks, documents, and measures the efficacy of wound treatments.Historically, the subjective nature of wound treatment has lead to many trial-and-error therapies to match wounds with the right treatment. The WoundMatrix™ digital wound measurement and tracking system provides an objective and qualitative tool and method to track, document, and measure the efficacy of wound treatments.

Posted in: Bio-Medical, Patient Data Management, Software, Medical, Briefs, MDB

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