Patent application number | Description | Published |
20080200784 | Method and device for measuring parameters of cardiac function - A device for non-invasively measuring parameters of a cardiac blood vessel in a patient is provided. The device comprises at least one light source that emits light in the 400 nm to 1000 nm wavelength range and at least one photodetector adapted to receive light emitted by the light source, which light is reflected from or transmitted through tissue of the patient, the output of said photodetector correlating with a parameter of the blood vessel. The device also includes a probe which permits delivery of light from the light source to an external tissue site on the patient in the proximity of a cardiac blood vessel and permits the photodetector to receive light originating from the light source which has been reflected from or transmitted through tissue at the patient site. | 08-21-2008 |
20090326352 | METHOD AND DEVICE FOR MEASURING PARAMETERS OF CARDIAC FUNCTION - A device for non-invasively measuring at least one parameter of a cardiac blood vessel in a patient is provided. The device comprises at least one light source that emits light in the 400 nm to 1000 nm wavelength range; at least one photodetector adapted to receive light emitted by the light source and generate an output based on the received light, wherein said light is reflected from or transmitted through tissue of the patient, the output of said photodetector being correlated with a parameter of the blood vessel; and at least one probe for facilitating delivery of light from the light source to an external tissue site on the patient in the proximity of the cardiac blood vessel and receipt of light by the photodetector. A system and methods of monitoring/measuring cardiac parameters utilizing the device and/or system are also provided. | 12-31-2009 |
20100116058 | METHOD AND DEVICE FOR MEASURING PARAMETERS OF CARDIAC FUNCTION - A full tube is closed in a closing station of a tube filling machine by forming a welded joint, and the closed tube is then tested in terms of the tightness thereof. In order to do so, sound wave energy is introduced into the welded joint, and the sound wave that penetrates the welded joint is detected and is compared with a reference sound wave. The tube is classified as faulty if the detected sound wave deviates from the reference sound wave by more than a predetermined measure. | 05-13-2010 |
20100222658 | SYSTEM AND METHOD FOR NON-INVASIVE MONITORING OF CEREBRAL TISSUE HEMODYNAMICS - A method and system are provided which are useful for the non-invasive determination and monitoring of cerebral tissue oxygenation. The method comprises the steps of generating at least first and second jugular venous output signals against time based on the reflection of at least first and second wavelengths of light, respectively, from an external tissue site on the patient in the proximity of the internal jugular vein; obtaining corresponding first and second cardiac arterial output signals for the first and second wavelengths of light, respectively, from the patient, and separating the first and second cardiac arterial output signals from the first and second jugular venous output signals, respectively, to generate first and second cerebral venous output signals; and determining cerebral tissue oxygenation based on the first and second cerebral venous output signals. A system useful to monitor cerebral tissue oxygenation may comprise a first module for optically generating at least first and second jugular venous output signals against time at at least first and second wavelengths of light, respectively, from the patient; a second module for generating first and second cardiac arterial output signals at the first and second wavelengths of light, respectively, from the patient; and a signal processing means adapted to separate the first and second cardiac arterial output signals from the first and second jugular venous output signals, respectively, to yield first and second cerebral venous output signals, for the determination of cerebral tissue oxygenation. | 09-02-2010 |
20130150735 | METHOD AND DEVICE FOR MEASURING PARAMETERS OF CARDIAC FUNCTION - A device for non-invasively measuring at least one parameter of a cardiac blood vessel in a patient is provided. The device comprises at least one light source that emits light in the 400 nm to 1000 nm wavelength range; at least one photodetector adapted to receive light emitted by the light source and generate an output based on the received light, wherein said light is reflected from or transmitted through tissue of the patient, the output of said photodetector being correlated with a parameter of the blood vessel; and at least one probe for facilitating delivery of light from the light source to an external tissue site on the patient in the proximity of the cardiac blood vessel and receipt of light by the photodetector. A system and methods of monitoring/measuring cardiac parameters utilizing the device and/or system are also provided. | 06-13-2013 |
Patent application number | Description | Published |
20090234245 | NON-INVASIVE MONITORING OF INTRACRANIAL PRESSURE - Methods, systems, and related computer program products for are described for non-invasive detection of intracranial pressure (ICP) variations in an intracranial compartment of a patient. Optical radiation is propagated transcranially into the intracranial compartment, and optical radiation that has migrated through at least a portion of the intracranial compartment and back out of the cranium is detected. At least one signal representative of the detected optical radiation is processed to extract therefrom at least one component signal that varies in time according to at least one of an intrinsic physiological oscillation and an externally driven oscillation in the patient. Examples of suitable intrinsic physiological oscillations include intrinsic respiratory and cardiac oscillations. Examples of suitable externally driven oscillations include ventilated respiratory oscillations and externally mechanically induced oscillations. The extracted component signal is then processed to generate an output signal representative of the ICP variations in the intracranial compartment. | 09-17-2009 |
20090326345 | RESULT VALIDATION IN NON-INVASIVE CEREBRAL OXYGENATION LEVEL MONITORING - Methods, systems, and related computer program products for optically monitoring a chromophore level in a body part of a patient are described. An optical source introduces optical radiation into the body part, and an optical detector receives optical radiation that has propagated through at least a portion of the body part and produces a first signal representative of the received optical radiation. The first signal is processed to produce a chromophore level metric, which is output on a user display, and is further processed to produce a second signal known to exhibit measurably significant timewise fluctuations corresponding to at least one intrinsic physiological oscillation of the patient when the optical source and the optical detector are in proper optical coupling with the body part. An error condition indication is provided if the measurably significant timewise fluctuations are not present in the second signal. | 12-31-2009 |
20100152559 | APPARATUS AND METHOD FOR NON-INVASIVE AND MINIMALLY-INVASIVE SENSING OF PARAMETERS RELATING TO BLOOD - Medical diagnostic system, apparatus and methods are disclosed. Optical transmitters generate radiation-containing photons having a specific interaction with at least one target chromophore in a target structure, preferably a blood vessel such as the interior jugular vein. The optical transmitters transmit the radiation into at least a first area including a substantial portion of the target structure and into a second area not including a substantial portion of the target structure. Optical receivers detect a portion radiation scattered from at least the first area and the second area. A processor estimates oxygenation, pH or cardiac output based on the scattered radiation detected from the first area, and the scattered radiation from the second area. | 06-17-2010 |
20100152591 | APPARATUS AND METHOD FOR NON-INVASIVE AND MINIMALLY-INVASIVE SENSING OF PARAMETERS RELATING TO BLOOD - A system and method for monitoring one or more parameters relating to blood, such as cardiac output, of a patient is provided. The system preferably includes an acoustic energy transducer unit configured and positioned to transmit acoustic energy into a target structure, preferably a blood vessel, within the patient so as to induce a measurable change, preferably a change in blood volume, within the target structure. The transducer unit can be an ultrasonic array, annular array, or groups thereof, or a single element transducer. The unit can also be a vibrator or acoustic loudspeaker. An optical transmitter transmits light into the target structure, and an optical receiver senses light scattered from within the target structure. The blood parameter can then be estimated from the sensed scattered radiation. Relative blood oxygen saturation in the blood vessel can be estimated by transmitting two wavelengths to measure oxy-hemoglobin and deoxy-hemoglobin. | 06-17-2010 |