A fetal movement measuring device includes a detection unit and a smart device. The detection unit is selected from elastic materials and is attachable to an abdomen of a pregnant woman. The detection unit includes multiple branch sections extending outward therefrom. Each of the branch sections includes a fetal movement sensor and an electrode patch. The fetal movement sensor and the electrode patch are connected to a main circuit board to transmit an abdominal dynamic physiological signal detected by the fetal movement sensor and a fetal electrocardiographic signal detected by the electrode patch to the main circuit board. The smart device is operable to receive the abdominal dynamic physiological signal and the fetal electrocardiographic signal from the main circuit board and includes a fetal movement algorithm program that calculates and generates fetal movement data and the fetal heart rate.

A system for the assessment and monitoring of the fetal electrocardiogram (ECG) and heart rate in a pregnant mother comprises wearable mechanical-electronic sensors, e.g., embedded in a wrist or arm band, which can measure the mechanical pulse signals from the mother, and an abdomen patch which can measure the combined ECG signals of the fetus and mother. The wrist or arm unit and the abdominal patch unit communicate wirelessly. By signal processing and gating out the maternal ECG signals as correlated with the mechanical maternal pulse signals, the fetal ECG and heart rate can be measured and monitored. These measurements may be displayed on the wrist or arm band device, or wirelessly through a remote device, mobile phone or computer. Electronic-mechanical sensors can also be embedded in the abdominal patch to measure uterine electromyogram (EMG), uterine contractions and fetal movements, to be correlated with the fetal ECG.

A leadless wireless ECG measurement system for measuring of bio-potentials includes at least one multi-contact bio-potential electrode assembly adapted for attachment to the patient's body to measure ECG. A processing unit is configured to produce a transfer function which computes estimated long-lead ECG signals based on the measured short-lead ECG signals from the plurality of contact points. This invention describes calibration process of short-lead ECG with standard lead ECG without requiring use of lead wires, only using a flexibly moving body part (finger) to calibrate patch. The invention describes use of algorithms for biopotential signal separation from mixed sources. The invention describes use of signal separation for identification of abnormal signals and the localization of biopotential source tissue. This invention describes effective biopotential evoked potential stimulation. The invention also describes biopotential neutralization of undesired biopotential.

Described herein are systems and methods for contraction monitoring. For example, a system for contraction monitoring includes an electrode patch including at least two electrodes, and a sensor module configured to be connected to the electrode patch. In some embodiments, the sensor module includes a signal acquisition module, a signal processing module, a power management module, a sensor control module, and a memory module and/or a data transmission module. In some embodiments, a method for contraction monitoring includes measuring, using the signal acquisition module, bio-potential signals by providing at least two electrodes on the abdomen of a pregnant woman. In some embodiments, a method for contraction monitoring includes processing, using the signal processing module, the bio-potential signal to extract electrohysterogram signals, maternal electrocardiogram signals and fetus electrocardiogram signals, and processing, using the signal processing module, the individual signals to extract uterine contraction.

A seamless, smart fetal monitoring garment and methods of using thereof. The system includes a knitted or interwoven garment having a multiplicity of conductive textile electrodes for sensing maternal and fetal electrical vital signals. The maternal and fetal electrical vital signals are selected from a group including maternal heart rate, fetal heart rate and electromyogram (EMG) activities including uterine activities. The method includes wearing the garment, acquiring electrical mixed common, maternal and fetal vital signals from surface region of a pregnant woman, using the plurality of textile electrodes, optimally weighted summing-up the acquired signals, analyzing the summed-up signals to thereby extract the maternal signal and the fetal signal, including determining their heart rates, and including detecting health hazards and in some embodiments, including detecting a uterine contraction sequence suggesting the need to be hospitalized for birth giving.

The invention concerns a multi-electrode patch for abdominal electrophysiological detection. The patch has a flexible substrate interconnecting multiple electrodes and a module unit for removably engaging with an electronic readout device for detecting a maternal and/or fetal electrophysiological signal from the electrodes. The module has a mechanical module unit for removable mechanical engagement with a housing of the readout device, and an electrical module unit for making an electrical connection from the electrodes to the readout device. Engaging the patch with the readout device comprises engaging both the mechanical module unit and the electrical module unit. The patch may be flexible in a manner that allows variation in the relative positioning between the electrodes. The patch and/or electronic readout device may comprise a security device for communication of an authentication code.

An electrode includes a cutaneous contact for sensing electrocardiogram signals from a pregnant human subject, the electrocardiogram signals containing fetal electrocardiogram signals; a connector in contact with the cutaneous contact for transmission of the electrocardiogram signals from the cutaneous contact to a destination; and a cushion including a cavity, the cushion configured such that the cavity faces the pregnant human subject when in use, the cutaneous contact being coupled to the cushion such that the cutaneous contact is positioned within the cavity, the cushion and the cutaneous contact configured to allow the cutaneous contact to be an electrical interface with skin of the subject when the electrode is in use, the cavity being configured to receive and retain therein an amount of a conductive wetting substance sufficient to provide a skin-electrode impedance of less than 150 k when the electrocardiogram signals are at frequencies of 10 Hz or less.

The present invention provides a medical electrode, which comprises an annular adhesive pad (203) to be attached to a living being, a conductive pad (205) disposed in the central hole (207) of the annular adhesive pad, a first conductive snap element (209), a conductive element (211) and a sealing film (213). The conductive element (211) is configured to establish electrical communication between the conductive pad (205) and the first conductive snap element (209) and the sealing film (213) is attached to the annular adhesive pad (203) and to fix at least a portion of the conductive element (211) between the annular adhesive pad (203) and the sealing film (213). The flexibility and/or length of the conductive element is chosen to be large enough so as to allow the first conductive snap element (209) to move without causing the conductive pad (205) to move, resulting in reliable electrical contact between the conductive pad and the skin of the living being.

The present disclosure relates to a maternal monitoring transducer (20), comprising a housing (60), a substrate board (72), particularly a PCB (70), disposed in the housing (60) and comprising control components (74), and a displacement measurement arrangement (76) comprising a displacement-sensitive structure (78) that is arranged to detect deformations of a deflectable measurement section (80) of the substrate board (72), wherein the maternal monitoring transducer (20) supplies a signal that is representative of maternal motion. The disclosure further relates to a method of operating a maternal monitoring transducer (20).

Described herein are systems and methods for contraction monitoring. For example, a system for contraction monitoring includes an electrode patch including at least two electrodes, and a sensor module configured to be connected to the electrode patch. In some embodiments, the sensor module includes a signal acquisition module, a signal processing module, a power management module, a sensor control module, and a memory module and/or a data transmission module. In some embodiments, a method for contraction monitoring includes measuring, using the signal acquisition module, bio-potential signals by providing at least two electrodes on the abdomen of a pregnant woman. In some embodiments, a method for contraction monitoring includes processing, using the signal processing module, the bio-potential signal to extract electrohysterogram signals, maternal electrocardiogram signals and fetus electrocardiogram signals, and processing using the signal processing module, the individual signals to extract uterine contraction.