A biogalvanic battery therapeutic appliance that can effectively pass electric current even at a negative electrode with an extended length and a high resistance value, achieving excellent current stimulation effect with comfortable touch, is configured such that a negative electrode component and a positive electrode component are connected to a conductive member and are brought into contact with a skin forming an energized circuit in the skin. The conductive member connects the negative electrode component and the positive electrode component between a surface of the negative electrode component and a surface of the positive electrode component on the opposite side from a skin contact surface. The conductive member and the positive electrode component are both made of the same carbon material.

Apparatus is provided that includes a two-dimensional arrangement (70) of extracranial electrodes (30), configured to be placed outside and in electrical contact with a skull of a subject identified as at risk of or suffering from a disease; and a cerebrospinal fluid (CSF) electrode (32), configured to be implanted in a ventricular system of a brain of the subject. Control circuitry is configured to drive the extracranial and the CSF electrodes (30, 32) to clear a substance from brain parenchyma of the subject into at least one region of the brain selected from the group consisting of: a subarachnoid space of the brain and dural sinuses of the brain. Other embodiments are also described.

Apparatus is provided that includes a two-dimensional arrangement (70) of extracranial electrodes (30), configured to be placed outside and in electrical contact with a skull of a subject identified as at risk of or suffering from a disease; and a cerebrospinal fluid (CSF) electrode (32), configured to be implanted in a ventricular system of a brain of the subject. Control circuitry is configured to drive the extracranial and the CSF electrodes (30, 32) to clear a substance from brain parenchyma of the subject into at least one region of the brain selected from the group consisting of: a subarachnoid space of the brain and dural sinuses of the brain. Other embodiments are also described.

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.

An embodiment discloses a healthcare device for non-invasive brain stimulation, including a plurality of electrode units that applies electrical stimulation to a brain of a subject; a power supply unit that supplies power to the plurality of electrode units; and a control unit that controls the electrical stimulation applied to the brain of the subject by controlling the plurality of electrode units and the power supply unit, wherein the electrical stimulation includes a buffer mode using tACS and a main mode using tDCS.

An embodiment discloses a healthcare device for non-invasive brain stimulation, including a plurality of electrode units that applies electrical stimulation to a brain of a subject; a power supply unit that supplies power to the plurality of electrode units; and a control unit that controls the electrical stimulation applied to the brain of the subject by controlling the plurality of electrode units and the power supply unit, wherein the electrical stimulation includes a buffer mode using tACS and a main mode using tDCS.

Chronic pain management can be achieved by electrically anesthetizing a peripheral nerve with on-demand electrical nerve block (OD-ENB). OD-ENB can be provided by an implantable capsule. Externally, at least a portion of the capsule can be constructed of a conductive membrane and the rest of the capsule comprises a biocompatible material. A blocking electrode contact, a return electrode contact, and a powering/communication component can be within the capsule. The blocking electrode contact can deliver a direct current (DC) through a portion of the conductive membrane to block conduction in the neural tissue to provide the OD-ENB. The return electrode contact can receive a return current from the neural tissue through another portion of the conductive membrane. The powering/communication component can communicate with one or more external components located external to the patient's body to receive a power signal. Notably the capsule has no internal battery.

Chronic pain management can be achieved by electrically anesthetizing a peripheral nerve with on-demand electrical nerve block (OD-ENB). OD-ENB can be provided by an implantable capsule. Externally, at least a portion of the capsule can be constructed of a conductive membrane and the rest of the capsule comprises a biocompatible material. A blocking electrode contact, a return electrode contact, and a powering/communication component can be within the capsule. The blocking electrode contact can deliver a direct current (DC) through a portion of the conductive membrane to block conduction in the neural tissue to provide the OD-ENB. The return electrode contact can receive a return current from the neural tissue through another portion of the conductive membrane. The powering/communication component can communicate with one or more external components located external to the patient's body to receive a power signal. Notably the capsule has no internal battery.

A method for assisting a user with meditation includes applying, to the user, a distributor at or near a brain portion of the user; operating a signal generator to provide a signal to the brain portion the user, the signal being applied to the brain portion of the user by the distributor; and engaging in one or more meditation practices by the user while the signal is being applied to the brain portion of the user. The signal may correspond to an electrical signal, and the distributor may include an anode and a cathode. The anode may provide the signal to the user, and the cathode may receive the signal from the user to transfer the signal back to the signal generator.

A method for assisting a user with meditation includes applying, to the user, a distributor at or near a brain portion of the user; operating a signal generator to provide a signal to the brain portion the user, the signal being applied to the brain portion of the user by the distributor; and engaging in one or more meditation practices by the user while the signal is being applied to the brain portion of the user. The signal may correspond to an electrical signal, and the distributor may include an anode and a cathode. The anode may provide the signal to the user, and the cathode may receive the signal from the user to transfer the signal back to the signal generator.