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US 12,268,606 B2Granted
Autonomous hydrogen evolution reaction threshold detection method and device
AssigneeGarwood Medical Devices, LLC
InventorsJason M. Maranhao, Brian R. Peterson, Jackson G. Hobble, Mary K. Canty
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Abstract
A method and apparatus to autonomously analyze the surface area and alloy composition ratios of a metallic implant, such as an orthopedic implant, so that an optimal voltage for biofilm disruption can be selected and make treatment easier based at least in part upon the autonomous detection of a hydrogen evolution reaction threshold.
Claims19
A method of providing cathodic voltage controlled electrical stimulation comprising:
- providing a metallic object to be treated that serves as a working electrode;
- applying a polarization scan to the metallic object to be treated;
- using a processor, autonomously detecting a hydrogen evolution reaction threshold from the polarization scan to determine a cathodic voltage to be applied to the object to be treated wherein the processor is programmed to detect specific inflection points in the applied polarization scan in order to precisely detect the cathodic voltage;
- and,
- applying the determined cathodic voltage to the metallic object to be treated, wherein the method further comprises:
- initiating the polarization scan at an open circuit potential and scanning cathodically to a target voltage that enables the detection of the hydrogen evolution reaction by the polarization scan, followed by analyzing the polarization scan in real time;
- and
- detecting a first change in slope in the polarization scan indicative of an oxygen reduction reaction prior to detecting the second change in slope in the polarization scan that indicates the hydrogen evolution reaction.
5 more elements
A device for controlling a cathodic stimulation voltage for treatment of a metallic object, the device comprising:
- a processor configured for connection to a potentiostat;
- working, counter and reference electrodes coupled to the potentiostat, wherein the working electrode is the metallic object to be treated;
- wherein the processor is programmed to:
- apply a polarization scan to the metallic object to be treated and generate polarization data;
- using the processor, autonomously detect a hydrogen evolution reaction threshold from the generated polarization data for determining a cathodic voltage to be applied to the metallic object to be treated for removal of biofilm wherein the processor is programmed to detect various inflection points of the applied polarization scan to determine the cathodic voltage;
- and,
- apply the determined cathodic voltage to the metallic object to be treated, wherein the processor is further programmed to:
- initiate the polarization scan at an open circuit potential and scan in a negative direction to a target voltage that enables detection of the hydrogen evolution reaction from the polarization data in real time;
- and
- detect a first change in slope in the polarization data indicative of an oxygen reduction reaction prior to detecting a second change in slope in the polarization data indicative of the hydrogen evolution reaction.
7 more elements
Dependencies are inferred from the claim text.