Abstract: An infusion system has a capability to monitor infusion complications such as extravasation, tissue necrosis, infiltration, phlebitis, and blood clots. The infusion system has at least partially transparent flexible film barrier dressing in a flexible membrane that incorporates a plurality of sensors capable of detecting tissue condition and a control unit capable of coupling to the film barrier dressing that monitors signals from the sensors. A device is capable of executing non-invasive physiological measurements to characterize physiologic information from cross-sectional surface and subcutaneous tissue to detect the presence or absence of tissue conditions such as infiltration or extravasation during intravascular infusion. In some examples, the device utilizes depth-selective methods to sense, detect, quantify, monitor, and generate an alert notification of tissue parameters.

Abstract: An impedance model of tissue is useful for describing conductivity reconstruction in tissue. Techniques for determining and mapping conductivity distribution in tissue supply useful information of anatomical and physiological status in various medical applications. Electrical Impedance Tomography (EIT) techniques are highly suitable for analyzing conductivity distribution. Electrical characteristics of tissue include resistive elements and capacitive elements. EIT techniques involve passing a low frequency current through the body to monitor various anatomical and physiological characteristics. The system can interrogate at multiple frequencies to map impedance. Analytical techniques involve forward and inverse solutions to boundary value analysis to tissue characteristics.

Abstract: A medical apparatus comprises a dressing, one or more sensor elements integrated into the dressing, a flexible membrane coupled to the dressing, and an adhesive layer coupled to the dressing and coupled to the flexible membrane, the adhesive layer capable of attaching the apparatus to a patient's skin.

Abstract: An impedance model of tissue is useful for describing conductivity reconstruction in tissue. Techniques for determining and mapping conductivity distribution in tissue supply useful information of anatomical and physiological status in various medical applications. Electrical Impedance Tomography (EIT) techniques are highly suitable for analyzing conductivity distribution. Electrical characteristics of tissue include resistive elements and capacitive elements. EIT techniques involve passing a low frequency current through the body to monitor various anatomical and physiological characteristics. The system can interrogate at multiple frequencies to map impedance. Analytical techniques involve forward and inverse solutions to boundary value analysis to tissue characteristics.

Abstract: An infusion system has a capability to monitor infusion complications such as extravasation, tissue necrosis, infiltration, phlebitis, and blood clots. The infusion system has at least partially transparent flexible film barrier dressing in a flexible membrane that incorporates a plurality of sensors capable of detecting tissue condition and a control unit capable of coupling to the film barrier dressing that monitors signals from the sensors. A device is capable of executing non-invasive physiological measurements to characterize physiologic information from cross-sectional surface and subcutaneous tissue to detect the presence or absence of tissue conditions such as infiltration or extravasation during intravascular infusion. In some examples, the device utilizes depth-selective methods to sense, detect, quantify, monitor, and generate an alert notification of tissue parameters.

Abstract: A flexible film barrier dressing incorporates a plurality of sensors that enable an infusion system to monitor tissue conditions. The film barrier dressing is a flexible membrane that can be attached to a patient's skin for a short time or for extended times of up to 70 days or more, and later removed. The film barrier dressing can be constructed from several flexible membrane materials such as breathable barrier films that supply moisture vapor permeability while preventing passage of liquids through the dressing. Typical flexible membrane materials include microporous materials and dense monolithic membranes. Some of the membrane materials are useful for infection control and pass water vapor while excluding or killing pathogenic microorganisms such as bacteria.