Embodiments of the present disclosure relate to monitoring one or more physiological parameters of a subject using a multilayer wearable device. In an embodiment, a multilayer wearable device is configured to be attached to a subject. The multilayer wearable device comprises a substrate having multiple layers including a first portion connected to a second portion. The first portion has a first side and a second, opposite side. And the second portion has a first side and a second, opposite side. The first side of the first portion is configured to be attached to the subject and the second portion is arranged on top of the first portion such that the first side of the second portion is disposed adjacent the second side of the first portion. And, the wearable device includes one or more electrical components configured to sense a physiological parameter of the subject.

Embodiments of the present disclosure relate to monitoring one or more physiological parameters of a subject using a multilayer wearable device. In an embodiment, a multilayer wearable device is configured to be attached to a subject. The multilayer wearable device comprises a substrate having multiple layers including a first portion connected to a second portion. The first portion has a first side and a second, opposite side. And the second portion has a first side and a second, opposite side. The first side of the first portion is configured to be attached to the subject and the second portion is arranged on top of the first portion such that the first side of the second portion is disposed adjacent the second side of the first portion. And, the wearable device includes one or more electrical components configured to sense a physiological parameter of the subject.

A biological sensor includes a sensor body for acquiring biological information; an electrode connected to the sensor body; a first layer member configured to store the sensor body, a first adhesive layer being disposed on one surface of the first layer member facing the electrode; and a second layer member being stuck onto the one surface of the first layer member, and having a shape for covering the sensor body and exposing the electrode, a second adhesive layer being disposed on a surface of the second layer member opposite to the first layer member. A sticking surface onto a living body is formed by the first layer member and the second layer member.

A biological sensor includes a sensor body for acquiring biological information; an electrode connected to the sensor body; a first layer member configured to store the sensor body, a first adhesive layer being disposed on one surface of the first layer member facing the electrode; and a second layer member being stuck onto the one surface of the first layer member, and having a shape for covering the sensor body and exposing the electrode, a second adhesive layer being disposed on a surface of the second layer member opposite to the first layer member. A sticking surface onto a living body is formed by the first layer member and the second layer member.

A conductive composite structure having a metal substrate and a conductive film on a surface of the metal substrate, the conductive film including a layered material of one or plural layers; the one or plural layers being a layer body represented by M.sub.mX.sub.n, where M is at least one metal of Group 3, 4, 5, 6 or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; n is not less than 1 and not more than 4; and m is more than n but not more than 5, and a modifier or terminal T exists on a surface of the layer body; and a residue derived from an organic compound having a hydroxyl group, a carbonyl group, or a combination thereof and having 2 to 8 carbon atoms, is bonded to each of the surface of the metal substrate and a surface of the layer body.

A non-invasive wearable sensor device for detecting biomarkers in secretion according to this invention comprises a colorimetric sensor (1), an electrochemical sensor (2), an electrochemical detector and processor (3) and a housing (4). The housing (4) is formed such that allows the colorimetric sensor (1) and electrochemical sensor (2) to contact with the secretion directly and continuously during wearing of the sensor device. This sensor device provides high performance of secretion absorption and retention, leading to high sensitivity to detection of biomarkers using a trace level of secretion sample. This sensor device is developed for detecting biomarkers based on two techniques: the colorimetric sensor (1) which allows the user to interpret a result by comparing it with a standard col or chart, and the electrochemical sensor (2) which provides a digital readout result. This sensor device can be used or simultaneous detection of several biomarkers in the same secretion sample.

A non-invasive wearable sensor device for detecting biomarkers in secretion according to this invention comprises a colorimetric sensor (1), an electrochemical sensor (2), an electrochemical detector and processor (3) and a housing (4). The housing (4) is formed such that allows the colorimetric sensor (1) and electrochemical sensor (2) to contact with the secretion directly and continuously during wearing of the sensor device. This sensor device provides high performance of secretion absorption and retention, leading to high sensitivity to detection of biomarkers using a trace level of secretion sample. This sensor device is developed for detecting biomarkers based on two techniques: the colorimetric sensor (1) which allows the user to interpret a result by comparing it with a standard col or chart, and the electrochemical sensor (2) which provides a digital readout result. This sensor device can be used or simultaneous detection of several biomarkers in the same secretion sample.

A conformal patch device can be provided to a patient. The patch device can include sensors configured to be positioned over a chest of a patient. The sensors can include PPG sensors, ECG sensors, and SCG sensors. The conformal patch device can to adhere to a single continuous area of the chest. Some sensors may attached to a viscoelastic substrate to achieve mechanical isolation from other patch components. The conformal patch device can capture measurements from the sensor doing a time window sufficient enough to detect disordered breathing. The system can determine disordered breathing and related cardiorespiratory parameters during the time window for the patient using the sensor measurements.

Provided is a biological electrode including: a polarizable electrode layer; and a non-polarizable electrode layer laminated on the polarizable electrode layer, in which the non-polarizable electrode layer includes a resin, silver, and silver chloride supported by silica, a content of the silver is 150 to 300 mass parts based on 100 mass parts of the resin, a ratio between the silver and the silver chloride is 97:3 to 95:5, and the non-polarizable electrode layer has a thickness of 3 to 5 μm.

A stretchable mounting board that includes a stretchable substrate having a main surface, a stretchable wiring disposed on the main surface of the stretchable substrate, a mounting electrode section electrically connected to the stretchable wiring, solder electrically connected to the mounting electrode section and including bismuth and tin, and an electronic component electrically connected to the mounting electrode section with the solder interposed therebetween. The mounting electrode section has a first electrode layer on a side thereof facing the stretchable wiring and which includes bismuth and tin, and a second electrode layer on a side thereof facing the solder and which includes bismuth and tin. A concentration of the bismuth in the first electrode layer is lower than a concentration of the bismuth in the second electrode layer.