This disclosure provides isolation for a medical amplifier by providing a low impedance path for noise across an isolation barrier. The low impedance path can include a capacitive coupling between a patient ground, which is isolated from control circuitry, and a functional ground of an isolation system that is isolated from earth ground. The low impedance path can draw noise current from an input of an amplifier of patient circuitry.

A sensor instrument for generation of electrocardiograms, in particular for cardiac computed tomography, has two electrodes, an electronic module and a support, wherein multiple suction elements for affixing the support to the body of a subject (are positioned on the support.

An ECG electrode application system includes an electrode distributor including a housing and a suction manifold assembly disposed within the housing. The suction manifold assembly includes a manifold, a plurality of pneumatic valves integrated within the manifold, and the manifold includes a common manifold chamber fluidly coupled to each pneumatic valve, and each pneumatic valve includes a venturi passage. The ECG electrode application system includes a plurality of suction electrodes, each suction electrode having an electrode suction dome and coupled to the electrode distributor via a lead wire, and each lead wire is coupled to a respective pneumatic valve. Each electrode suction dome is configured when pressed to cause a change in air pressure that results in a suction pressure being applied within a respective electrode suction dome to adhere a corresponding suction electrode to a subject at a pressure determined by the venturi passage of a corresponding pneumatic valve.

An ECG electrode application system includes an electrode distributor including a housing and a suction manifold assembly disposed within the housing. The suction manifold assembly includes a manifold, a plurality of pneumatic valves integrated within the manifold, and the manifold includes a common manifold chamber fluidly coupled to each pneumatic valve, and each pneumatic valve includes a venturi passage. The ECG electrode application system includes a plurality of suction electrodes, each suction electrode having an electrode suction dome and coupled to the electrode distributor via a lead wire, and each lead wire is coupled to a respective pneumatic valve. Each electrode suction dome is configured when pressed to cause a change in air pressure that results in a suction pressure being applied within a respective electrode suction dome to adhere a corresponding suction electrode to a subject at a pressure determined by the venturi passage of a corresponding pneumatic valve.

An electrocardiogram (ECG)-phonocardiogram (PCG) synchronous acquisition device and an ECG-PCG detection system are provided. The ECG-PCG synchronous acquisition device includes a conductive adsorption unit configured to be absorbed to human skin; and an acquisition unit connected to the conductive adsorption unit. The acquisition unit is configured to acquire ECG signals directly, and simultaneously acquire PCG signals through the conductive adsorption unit. The ECG-PCG synchronous acquisition device and the ECG-PCG detection system are used to solve the technical problem of low efficiency in synchronously acquiring electrocardiogram signals and heart sound signals in the related art.

An electrocardiogram (ECG)-phonocardiogram (PCG) synchronous acquisition device and an ECG-PCG detection system are provided. The ECG-PCG synchronous acquisition device includes a conductive adsorption unit configured to be absorbed to human skin; and an acquisition unit connected to the conductive adsorption unit. The acquisition unit is configured to acquire ECG signals directly, and simultaneously acquire PCG signals through the conductive adsorption unit. The ECG-PCG synchronous acquisition device and the ECG-PCG detection system are used to solve the technical problem of low efficiency in synchronously acquiring electrocardiogram signals and heart sound signals in the related art.