A battery operated device and method of removing a battery therefrom are described. The battery operated device includes a battery compartment, a battery in the battery compartment, and an electric component powered by the battery. The battery compartment is mounted on a deformable base and includes a top surface which is adapted to be ruptured by deforming the deformable base, thereby enabling removal of the battery from the battery compartment. The method of removing a battery from a battery compartment of a battery operated device includes rupturing a top surface of the battery compartment by deforming a deformable base of the battery compartment, and removing the battery from the battery compartment.

Provided is a wireless 12-lead or multiple unipolar-lead electrocardiograph system without cable connection between a measurement electrode and device body. The present invention includes: a measurement electrode that acquires an electrocardiographic signal of a subject 150; a Wilson terminal 180 that is connected to the measurement electrode and forms an indifferent electrode; and an electrocardiograph body 300 that generates an electrocardiogram. The measurement electrode has: active measurement electrodes 200A-200F, 200H, 200J that wirelessly communicate with the electrocardiograph body 300; and passive measurement electrodes 200G, 200I that are connected to the active measurement electrodes 200A-200F, 200H, 200J and the Wilson terminal 180. The electrocardiograph body 300 generates the electrocardiogram on the basis of a lead signal sent by the active measurement electrodes 200A-200F, 200H, 200J.

A method includes receiving analog body-surface signal from body-surface electrode, and multiple analog unipolar signals from multiple unipolar electrodes of an invasive probe. A first unipolar electrode is assigned to serve as a common electrical ground and a common timing reference for the analog unipolar signals and the analog body-surface signal. The analog unipolar signals are digitized to produce digital unipolar signals sampled relative to a digital ground. Defined are an analog bipolar signal between the first unipolar electrode and a second unipolar electrode of the probe, and digital bipolar signal formed from the first unipolar electrode and the second unipolar electrode. Ground and timing offsets between the analog bipolar signal and the digital bipolar signal are estimated, while the first unipolar electrode is connected to the digital ground. The ground offset and the timing offset are applied in measuring a third unipolar signal, sensed by a third unipolar electrode.

This invention relates to a universal ECG monitor of cardiac signals with enhances possibilities of scanning. The prior art monitors of cardiac signals make possible either a short-time touching by fingers or by other part of the human body of the electrodes, or they are permanently for a long time by means of a chest belt or by other means attached to the human body, wherein, such means are impractical and non-emergency. The equipment according to the present invention is a universal ECG monitor of a compact and easily portable design, which monitor substitutes the prior art costly and with difficulty movable hospital equipment. Moreover, it is a very economical solution, which makes possible to obtain a complete set ECG curves, i.e. the 12-lead ECG, by means of one of the monitor subsequently moved into various positions, and so to scan signals from different parts of the human body.

A blood pressure monitoring device configured to attach and supply air to a blood pressure cuff can include a housing having an interior, a port configured to enable fluid communication between the interior of the housing and an interior of the blood pressure cuff, and an air intake configured to allow ambient air to enter the interior of the housing and further configured to inhibit liquids from entering the interior of the housing. The air intake can define a non-linear passageway for ambient air to enter the interior of the housing. The housing can have a first side and a first inner wall. The air intake can be defined by a first opening in the first side and a second opening in the first inner wall. The first opening can be not aligned with the second opening.

A blood pressure monitor configured to removably mount to a cuff in a substantially symmetrical position with respect to a width of the cuff can include a housing defining an interior, a first port, and a second port. The first port can: secure to a first prong of the cuff when the cuff is mounted in a first orientation; receive and secure to a second prong of the cuff when the cuff is mounted in a second orientation; and enable fluid communication between the interior and at least one of a first fluid passage within the first prong and a second fluid passage within the second prong. The second port can: secure to the second prong of the cuff when the cuff is mounted in the first orientation; and receive and secure to the first prong of the cuff when the cuff is mounted in the second orientation.

An electrocardiogram device configured to transmit at least one signal responsive to a wearer's cardiac electrical activity can include a disposable portion and a reusable portion configured to mechanically and electrically mate with each other. The disposable portion can include a base having at least one mechanical connector portion, a plurality of cables and corresponding external ECG electrodes, and a first plurality of electrical connectors associated with the plurality of cables. The reusable portion can include a cover having at least one mechanical connector portion, a second plurality of electrical connectors configured to electrically connect with the first plurality of electrical connectors of the disposable portion, and an output connector port configured to transmit at least one signal responsive to one or more signals outputted by the external ECG electrodes of the disposable portion.

An assembly for enabling a caregiver to secure a physiological monitoring device to an arm of a user can include the physiological monitoring device a cradle configured to removably secure to the physiological monitoring device and to the user's arm. The physiological monitoring device can include a first connector port configured to electrically connect to a first cable and a first locking tab movable between an extended position and a retracted position. The cradle can include a base, first and second sidewalls, a back wall connected to the base and the first and second sidewalls. The cradle can further include a first opening in the back wall configured to receive the first connector port and a second opening in the first sidewall configured to receive the first locking tab when the physiological monitoring device is secured to the cradle and the first locking tab is in the extended position.

A patient-worn arrhythmia monitoring and treatment device includes a pair of therapy electrodes and at least one pair of sensing electrodes disposed proximate to the skin and configured to continually sense at least one ECG signal of the patient over an extended period of time. The device includes a therapy delivery circuit coupled to the pair of therapy electrodes and configured to deliver one or more therapeutic pulses. A controller coupled to therapy delivery circuit is configured to analyze the at least one ECG signal and detect one or more treatable arrhythmias and cause the therapy delivery circuit to deliver the one or more therapeutic pulses to the patient. At least one of the one or more therapeutic pulses is formed as a biphasic waveform delivering within 15 percent of 360 J of energy to a patient body having a transthoracic impedance from about 20 to about 200 ohms.

A charging station for providing power to a physiological monitoring device can include a charging bay and a tray. The charging bay can include a charging port configured to receive power from a power source. The tray can be positioned within and movably mounted relative to the charging bay. The tray can be further configured to secure the physiological monitoring device and move between a first position and a second position. In the first position, the tray can be spaced away from the charging port, and, in the second position, the tray can be positioned proximate the charging port, thereby allowing the physiological monitoring device to electrically connect to the charging port.