The present disclosure provides a multi-layer body surface electrode. The multi-layer body surface electrode includes a first layer having a first diameter, a second layer having a second diameter, and a third layer having a third diameter. The second layer is positioned between the first layer and the third layer, and the second diameter is smaller than the first diameter and the third diameter.

The present disclosure provides a multi-layer body surface electrode. The multi-layer body surface electrode includes a first layer having a first diameter, a second layer having a second diameter, and a third layer having a third diameter. The second layer is positioned between the first layer and the third layer, and the second diameter is smaller than the first diameter and the third diameter.

A biological data measurement device includes a substrate disposed at a position spaced a predetermined distance from a body surface of a living organism as a measuring object via a support member so that an air layer is formed between the substrate and the body surface. The substrate is provided with a temperature measurement device including an infrared thermometer for measuring a body surface temperature Tsk of the body surface and a substrate thermometer for measuring a substrate temperature Tsub of the substrate. The temperature measurement device measures the body surface temperature Tsk and the substrate temperature Tsub in the same place at least twice of a first timing A and a second timing B.

A biological data measurement device includes a substrate disposed at a position spaced a predetermined distance from a body surface of a living organism as a measuring object via a support member so that an air layer is formed between the substrate and the body surface. The substrate is provided with a temperature measurement device including an infrared thermometer for measuring a body surface temperature Tsk of the body surface and a substrate thermometer for measuring a substrate temperature Tsub of the substrate. The temperature measurement device measures the body surface temperature Tsk and the substrate temperature Tsub in the same place at least twice of a first timing A and a second timing B.

A biological data measurement device in which a living organism having a first thermal resistance Rth1 from a core to a surface is a measuring object, includes a heat insulating layer which is disposed on a body surface of the measuring object and has a second thermal resistance Rth2; a measurement device for measuring a first and a second temperatures, which is segregated by the heat insulating layer; and an adding device for adding a predetermined delay time to the second temperature in order to correct a response delay of the first temperature as compared with the second temperature. The first temperature is a bottom side temperature of a bottom surface of the heat insulating layer, which is in contact with the body surface, and the second temperature is a top side temperature of a top surface of the heat insulating layer.

A biological data measurement device in which a living organism having a first thermal resistance Rth1 from a core to a surface is a measuring object, includes a heat insulating layer which is disposed on a body surface of the measuring object and has a second thermal resistance Rth2; a measurement device for measuring a first and a second temperatures, which is segregated by the heat insulating layer; and an adding device for adding a predetermined delay time to the second temperature in order to correct a response delay of the first temperature as compared with the second temperature. The first temperature is a bottom side temperature of a bottom surface of the heat insulating layer, which is in contact with the body surface, and the second temperature is a top side temperature of a top surface of the heat insulating layer.

A bio-electrode includes an electro-conductive base material and a living body contact layer. The living body contact layer includes a water-free resin layer and a permeation layer on a surface side of the resin layer where a living body comes into contact. The permeation layer is permeated with water and a water-soluble salt selected from the group consisting of sodium salts, potassium salts, calcium salts, magnesium salts, and betaines. This aims to provide: a dry-type bio-electrode that enables quick signal collection after attachment to skin, the bio-electrode being excellent in electric conductivity and biocompatibility, light-weight, and manufacturable at low cost, and capable of preventing significant reduction in the electric conductivity even when wetted with water or dried; a method for manufacturing the bio-electrode; and a method for measuring a biological signal.

A wearable arrhythmia monitoring and treatment device for improving confidence in determined arrhythmias prior to treatment includes a plurality of sensing electrodes, one or more therapy electrodes, and an electrode signal acquisition circuit having a plurality of inputs. The electrode signal acquisition circuit is configured to sense a respective signal provided by each of a plurality of different pairings of the plurality of sensing electrodes. The wearable arrhythmia monitoring and treatment device includes a monitoring and detection circuit including at least one processor configured to analyze the respective signals provided by each of the plurality of different pairings of the plurality of sensing electrodes, change a confidence level in a determined arrhythmia condition based on the respective signals provided by the plurality of different pairings of the plurality of sensing electrodes, and initiate a therapy to the patient via the one or more therapy electrodes based on the confidence level.

A wearable arrhythmia monitoring and treatment device for improving confidence in determined arrhythmias prior to treatment includes a plurality of sensing electrodes, one or more therapy electrodes, and an electrode signal acquisition circuit having a plurality of inputs. The electrode signal acquisition circuit is configured to sense a respective signal provided by each of a plurality of different pairings of the plurality of sensing electrodes. The wearable arrhythmia monitoring and treatment device includes a monitoring and detection circuit including at least one processor configured to analyze the respective signals provided by each of the plurality of different pairings of the plurality of sensing electrodes, change a confidence level in a determined arrhythmia condition based on the respective signals provided by the plurality of different pairings of the plurality of sensing electrodes, and initiate a therapy to the patient via the one or more therapy electrodes based on the confidence level.

An arrhythmia monitoring device includes a plurality of pairs of ECG sensing electrodes disposed in a garment configured to be worn about a torso of a patient, and signal acquisition circuit configured to be electrically coupled to the plurality pairs of ECG sensing electrodes. The device includes a processor in communication with the signal acquisition circuit configured to execute a selection process comprising identifying a quality of each of a plurality of ECG signals, ranking the signals based on the identified quality, and selecting at least two ECG signals to monitor having highest quality. The processor is configured to re-execute the selection process following an event including at least one of the garment shifting on the torso, the garment being repositioned on the torso, and the garment being removed and returned to the torso of the patient, and monitor the selected at least two ECG signals for a cardiac arrhythmia.