A connector may include a first housing configured to detachably secure a first input cable of a first sensor configured to generate a first signal, and a second housing configured to detachably secure a second input cable of a second sensor configured to generate a second signal. The second housing may be configured to transmit the second signal from the second input cable to the first housing. The first housing may be configured to transmit at least one of the first signal and the second signal to an output cable. A coupling of the first housing may be configured to mate with a coupling of the second housing such that the first housing and the second housing are configured to be detachably secured to each other. The coupling may be mechanical, electro-mechanical, or magnetic. Either sensor may be an electrocardiogram sensor or a pulse oximetry sensor.

A connector may include a first housing configured to detachably secure a first input cable of a first sensor configured to generate a first signal, and a second housing configured to detachably secure a second input cable of a second sensor configured to generate a second signal. The second housing may be configured to transmit the second signal from the second input cable to the first housing. The first housing may be configured to transmit at least one of the first signal and the second signal to an output cable. A coupling of the first housing may be configured to mate with a coupling of the second housing such that the first housing and the second housing are configured to be detachably secured to each other. The coupling may be mechanical, electro-mechanical, or magnetic. Either sensor may be an electrocardiogram sensor or a pulse oximetry sensor.

Implantable medical device configured to detect an atrial electric signal of a heart, and a ventricular electric signal of the same heart. Atrial events are evaluated in the atrial electric signal detected by a first detection unit and/or ventricular events are evaluated in the ventricular electric signal detected by a second detection unit for recognizing a condition of the device in which atrial electric signals are insufficiently detected.

Evaluation is done by applying at least one of: morphology of the detected atrial electric signals; lacking stability of atrial events; absence of atrial events over a period of time; an amplitude of the detected atrial electric signal being lower than a predefined threshold value; absence of atrial events during detection of ventricular electric signals simultaneously; comparison of atrial events sensed with first and second sensing profiles, the second being more sensitive than the first.

Implantable medical device configured to detect an atrial electric signal of a heart, and a ventricular electric signal of the same heart. Atrial events are evaluated in the atrial electric signal detected by a first detection unit and/or ventricular events are evaluated in the ventricular electric signal detected by a second detection unit for recognizing a condition of the device in which atrial electric signals are insufficiently detected.

Evaluation is done by applying at least one of: morphology of the detected atrial electric signals; lacking stability of atrial events; absence of atrial events over a period of time; an amplitude of the detected atrial electric signal being lower than a predefined threshold value; absence of atrial events during detection of ventricular electric signals simultaneously; comparison of atrial events sensed with first and second sensing profiles, the second being more sensitive than the first.

In the present invention, a right leg drive RLD monitoring system is employed on a medical computing system/computer, such as an ECG, HEMO and/or EP monitoring, mapping and/or recording system, that includes a number of RLD circuits to be utilized for different procedures or monitoring states to be performed using the system. The RLD monitoring system operates to actively monitor and/or record the feedback voltage to the RLD isolated from the patient. Using the measured feedback voltage data, the RLD monitoring system can identify and determine if the RLD circuit in use is approaching saturation, has reached saturation and the duration the RLD circuit was in saturation. The RLD monitoring system can concurrently and/or subsequently select and/or provide selection information regarding an optimal RLD circuit to be utilized to most effectively perform the desired function of the RLD in the procedure being performed using the monitoring, mapping and/or recording system.

In the present invention, a right leg drive RLD monitoring system is employed on a medical computing system/computer, such as an ECG, HEMO and/or EP monitoring, mapping and/or recording system, that includes a number of RLD circuits to be utilized for different procedures or monitoring states to be performed using the system. The RLD monitoring system operates to actively monitor and/or record the feedback voltage to the RLD isolated from the patient. Using the measured feedback voltage data, the RLD monitoring system can identify and determine if the RLD circuit in use is approaching saturation, has reached saturation and the duration the RLD circuit was in saturation. The RLD monitoring system can concurrently and/or subsequently select and/or provide selection information regarding an optimal RLD circuit to be utilized to most effectively perform the desired function of the RLD in the procedure being performed using the monitoring, mapping and/or recording system.

A method and apparatus or system are disclosed for a procedure with minimal or no fluoroscopy, for example an electrosurgical procedure, and which uses a three dimensional mapping system. The procedure typically involves electrical measurement of the electrode of a needle to determine its position. Some embodiments further include intracardiac echocardiography (ICE) for tracking devices. The apparatus includes a needle with a tip electrode, an electroanatomical mapping (EAM) system, and an electrical generator, wherein a switching device is used to restrictively electrically connect the needle to only one of the mapping system or generator at a given time.

A device for functional electrical stimulation (FES), neuromuscular electrical stimulation (NMES), and/or in receiving electromyography (EMG) signals includes a sleeve and electrodes. The sleeve is sized and shaped to be worn on a human arm, and comprises a stretchable fabric The sleeve has a distal end disposed on or adjacent a wrist of the human arm when the sleeve is worn on the human arm and a proximal end opposite from the distal end. The electrodes are secured with the sleeve and positioned to contact skin of the human arm when the sleeve is worn on the human arm. The sleeve may include an inner sleeve contact with the skin and an outer sleeve disposed over the inner sleeve. The inner sleeve has openings in which the electrodes are disposed.

A method for detecting a position of a signal source in a living body includes: arranging three electrodes on a surface of the living body and alternately connecting a first external resistance and a second external resistance in parallel between the electrodes and a ground potential; measuring first voltages V.sub.i (i=1, 2, 3) generated at the respective electrodes when the first external resistance is connected in parallel between the electrodes and the ground potential, and second voltages V.sub.i (i=1, 2, 3) generated at the respective electrodes when the second external resistance is connected in parallel between the electrodes and the ground potential; and calculating three ratios V.sub.i/V′.sub.i (i=1, 2, 3) from the first and second voltages V.sub.i and V′.sub.i, and detecting the position of the signal source in the living body based on the three ratios V.sub.i/V′.sub.i (i=1, 2, 3).

A method and apparatus of processing a signal, where the method may include receiving spike signals of neurons detected by each of a plurality of electrodes, grouping electrodes, from among the plurality of electrodes, corresponding to spike signals generated from a neuron of the neurons into a group, calculating weights corresponding to the grouped electrodes, and processing signals for each of the neurons based on the weights.