Abstract:
The invention is related to a system (1) for providing a representation of dynamic cardiac cell charge state, comprising a sensor unit (107, 109) for receiving cardiac potential data, further comprising a sensor data acquisition module (10) for acquiring and providing said cardiac potential data to a cardiac cell charge state estimation module (20) of the system (1), wherein said estimation module (20) generates an estimation (200) of the cardiac cell charge state, wherein that the sensor unit (107) is realised as an esophageal ECG catheter.
Abstract:
A method of preventing or suppressing a false alarm during administration of food or medicine to a human or animal through a feeding tube having one or more sensors that generate a signal, comprises analyzing the signals to determine whether food or medicine is being administered and, if it is determined that food or medicine is present, preventing or suppressing an alarm. In a further step, the time and length of administration of food or medicine is recorded. When the feeding tube has at least two temperature sensors, differences in the temperatures recorded for the different temperature sensors indicate that food or medicine was administered. In a case where there is only one temperature sensor, the rate and extent of any temperature change of temperatures recorded from that temperature sensor are compared to an algorithm to determine whether feeding occurred. If the feeding tube has two or more electrodes that sense a change in impedance (galvanic or non-galvanic), that change indicates whether food or medicine is being administered. The signals are analyzed by a processor, monitor, or controller that generates an alarm signal.
Abstract:
Endotrachealtubus mit einem Tubusrohr und einer Kontaktelektrode zu Anlage an mindestens einem Stimmband eines mit dem Tubus intubierten Patienten, wobei zur Herstellung und Aufrechterhaltung eines zuverlässigen Kontakts zwischen den Stimmbändern des Patienten und der Kontaktelektrode während der Dauer einer Operation erfindungsgemäß vorgesehen ist, dass die Kontaktelektrode (18; 19) mindestens eine das Tubusrohr (15) in einem Kontaktbereich (16) wenigstens annähernd umlaufend umgebende Leiterschleife (20) aufweist.
Abstract:
An apparatus for monitoring EMG signals of a patient's laryngeal muscles includes an endotracheal tube having an exterior surface. Conductive ink electrodes are formed on the exterior surface of the endotracheal tube. The conductive ink electrodes are configured to receive the EMG signals from the laryngeal muscles when the endotracheal tube is placed in a trachea of the patient. At least one conductor is coupled to the conductive ink electrodes and is configured to carry the EMG signals received by the conductive ink electrodes to a processing apparatus.
Abstract:
A monitoring catheter (30) that inserts into the patient's esophagus alone or in combination with an existing catheter (84), such as a feeding or aspiration tube. The monitoring catheter (30) includes a pair of EMG electrodes (48, 50) on an exposed surface that contact the patient's esophageal wall to measure the activity of the diaphragm and/or a pair of pressure detecting mechanisms (36, 38) that measure the pressures within the patient at separate locations.
Abstract:
A combined naso-gastric feeding tube and electrode is described comprising a tube (1) in the region of one end is a luer (2) of conventional construction with a closing cap (3) joined to the luer by a strap (4). The electrode is an electroconductive wire (5) secured to the luer (2) by a plastics sleeve (6) shrunk onto the tube (1), the wire (5) passing down the inside of the tube (1) at one end to emerge through the wall of the tube adjacent its other end. A method of manufacturing the combined feeding tube and electrode is also described.
Abstract:
A system for performing a diagnostic or therapeutic procedure within a subject includes a device having a distal portion configured for insertion within a lumen or duct of the subject, the device including an elongate body having a longitudinal axis, the elongate body comprising a polymeric material and having a proximal end and a distal end, one or more electrically-conductive tracings carried on a first surface of the elongate body and configured to carry a signal, and one or more conductors embedded within the polymeric material and configured to carry a signal.
Abstract:
A system for obtaining signals related to electrical activity of the heart of a subject includes a sensing device including an elongate member having a distal end configured for placement within a body lumen of a subject, and a proximal end configured to extend from the subject, an actuation portion carried by the elongate member and configured for placement within the body lumen, the actuation portion having a low-profile state for delivery within the body lumen and an expanded state, and one or more sensors disposed on the actuation portion, each including a contact surface configured to contact an interior wall of the body lumen, wherein the actuation portion is configured to cause the contact surface of each of the one or more sensors to contact a location on the interior wall of the body lumen to provide a signal component for producing one or more electrocardiogram signals.
Abstract:
A medical imaging system employs a transesophageal probe (20) including an ultrasound transducer (21) for scanning a patient's heart and atrial electrode(s) (22) for generating atrial electrocardiogram signal(s) predominately indicative of electrical activity of atrium chambers of the patient's heart. The medical imaging system further employs ventricular electrode(s) (23) for generating ventricular electrocardiogram signal(s) predominately indicative of electrical activity of ventricle chambers of the patient's heart. The medical imaging system further employs an electrocardiogram machine (30) for generating an electrocardiogram waveform based on the indicated electrical activities of the patient's heart, and for generating a cardiac gating signal representative of a cyclical cardiac phase period of the electrocardiogram waveform. The medical imaging system further employs an ultrasound machine (40) for reconstructing an ultrasound image of the patient's heart encompassing a time segment or an entirety of the cyclical cardiac phase period.
Abstract:
Sensor arrangement for sensing activity in a nerve or muscle, the sensor arrangement being arranged to be secured to an insertion member for insertion into a body cavity, the sensor arrangement (2) comprising a support for supporting one or more sensing elements, the support comprising a first zone (10a) and a second zone (10b) spaced apart longitudinally from the first zone, where each of the first and second zones are arranged to be secured to the insertion member to define a fixed spacing therebetween, wherein a plurality of strips (16) comprising one or more sensing elements bridge at least part of the spacing between the first and second zones, the strips being moveable laterally relative to the longitudinal length of the support.