A wound monitoring and/or therapy apparatus can include multiple sensor circuits, a selection circuit coupled to each sensor circuit, and a processor configured to be in communication with the selection circuit. Each sensor circuit can process multiple sensor signals to generate a single output signal from the multiple sensor signals. Each of the sensor signals can correspond to a measurement of a sensor positioned on a substrate that is configured to be positioned at least partially in a wound. The selection circuit can receive the single output signals from the sensor circuits and outputs a selected single output signal. The processor can receive the selected single output signal and decomposes the selected signal output signal into the multiple sensor signals used to generate the selected single output signal. The processor can activate sensors and receive sensor data from the sensors. The processor can digitize the sensor data and transmit the digitized sensor data to a remote controller.

Methods, materials, articles, assemblies, systems, devices, kits and computer hardware/software for improving medical procedures, including, but not limited to, hemodialysis. Particular beneficial designs and uses of disinfecting patches, scab removal patches, hemostatic patches, healing patches and artificial scabs are included. For example, scab removal patches that avoid tenting, hemostatic patches with needle stabilizing elements, hemostatic patches applying pressure at a skin puncture site and a vessel puncture site, artificial scabs that release antimicrobial agents, etc.