Patent application number | Description | Published |
20080269820 | Heart Monitoring Device and a System to Detect Vibrations Concerning the Status of the Heart - An implantable heart monitoring system has a control circuit that operates an implanted vibrator to emit a vibration signal that interacts with tissue in vivo. A vibration sensor detects vibrations after interaction with the tissue, and supplies a detection signal to the control circuit. The control circuit analyzes the vibrations in the detected signal relative to the vibration signal, and derives information concerning at least one mechanical property of the heart therefrom, such as stiffness and/or thickness of at least a part of the heart. | 10-30-2008 |
20080294216 | Implantable Cardiac Stimulator , System, Device and Method for Monitoring Cardiac Synchrony - In a system and method for monitoring cardiac synchrony in a human heart, a first sensor is positioned at a first cardiac wall location of a heart that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and the first sensor measures said cardiac wall movements at the first cardiac wall location and emits a first sensor output signal corresponding thereto, a second sensor is positioned at a second cardiac wall location of the heart that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and the second sensor measures the cardiac wall movements at the second cardiac wall location and emits a second sensor output signal corresponding thereto. A lead arrangement is electrically connected to the first and second sensors and conducts the first and second sensor output signals therefrom to processing circuitry that processes the first and second sensor output signals to produce a synchronization signal therefrom indicative of synchrony in the respective valve plane movements at the first and second cardiac wall locations. | 11-27-2008 |
20090125090 | IMPLANTABLE MEDICAL LEAD - An implantable lead for sensing mechanical activity of a human heart has an insulating polymeric tube extending from a proximal end to a distal end of the lead, an electrical conductor provided in the lumen of the polymeric tube, and a sensor connected to the conductor at the distal end thereof. The polymeric tube is provided with a conductive surface layer along the inner face between the polymeric tube and the electrical conductor, the conductive surface layer being in electrical contact with this conductor. Accumulation of electrical charges between the electric conductor and the polymeric tube is thereby prevented. | 05-14-2009 |
20090137932 | HEART TRACKING DEVICE - A vessel tracking device for use with a pressure source has an elongate introduction element configured for introduction into a vessel of a human body, the introduction element having a proximal end and a distal end, and the distal end having a flexible distal end portion containing an internal cavity that is closed at the distal end. A pressure adjuster is configured for communication with said pressure source. The introduction element has a connection channel connected to the pressure adjuster at the proximal end of the introduction element, the connection channel being connected with the internal cavity and placing the internal cavity in communication with the pressure source, with the pressure adjuster controlling an internal pressure in the internal cavity. The distal end portion has different wall portions that are differently deformed as the internal pressure is adjusted, to produce a change in direction of the distal end controlled by the pressure controller. | 05-28-2009 |
20090177049 | Piezoelectric film - A method for producing a biocompatible material of the formula Na | 07-09-2009 |
20090177145 | MEDICAL DEVICE AND METHOD FOR MONITORING HEMATOCRIT AND SVO2 - A method, an implantable medical device, and a computer-readable medium encoded with programming instructions allow monitoring of a hematocrit value and an SvO2 level of a patient, making use of at least one medical lead connected to an implantable medical device that carries an optical sensor module that measures at least one hematocrit value and at least one SvO2 value using at least first, second and third light radiation wavelengths, by determining a present hematocrit value from at least one of the measured hematocrit values and determining a present SvO2 value from at least one of the measured SvO2 values, and determining a patient status by evaluating the present hematocrit value and the present SvO2 value, to allow a change in the patient status to be identified. | 07-09-2009 |
20090210023 | IMPLANTABLE HEART STIMULATING DEVICE WITH STIMULATION RATE OPTIMIZATION - An implantable heart stimulating device has a stimulation pulse generator that emits stimulation pulses at an adjustable stimulation rate, an activity sensor that emits an activity signal in response to detected activity of the patient, and a physiological parameter sensor that generates a physiological sensor signal in response to a detected physiological parameter. The activity and physiological sensor signals are supplied to a control arrangement that sets the stimulation rate for the stimulation pulse generator by executing a stimulation rate algorithm dependent on those signals. In the stimulation rate algorithm, if the physiological signal indicates an emotional stress on the part of the patient, the stimulation rate is increased to an adjustable emotional stress rate level, and if no increase in the activity signal occurs during a predetermined time period following the stimulation rate increase, the stimulation rate is decreased. | 08-20-2009 |
20090287269 | MEDICAL SYSTEM FOR MONITORING AND LOCALIZATION OF ELECTRODE LEADS IN THE HEART - A medical system has an implantable heart stimulator with sensing and stimulating pairs of electrodes, with an electric field through the heart being generated by the respective pairs by the application of alternating voltages at a preset frequency to the respective pairs. A signal receiver receives a signal representing the voltage potential difference between the voltage potential at one of the electrodes in the pair, and a reference electrode. The detected voltage is related to the generated electric field, and the signal receiver generates a potential different signal that is supplied to a control unit to determine parameters therefrom representing cardiac activity. | 11-19-2009 |
20100010600 | PIEZOELECTRIC SENSOR, A METHOD FOR MANUFACTURING A PIEZOELECTRIC SENSOR AND A MEDICAL IMPLANTABLE LEAD COMPRISING SUCH A PIEZOELECTRIC SENSOR - In a piezoelectric sensor, a method for the manufacture thereof, and an implantable lead embodying such a piezoelectric sensor, a layer of piezoelectric material, having aligned, polarized dipoles, is applied to a tubular supporting substrate, the layer of piezoelectric material having at least one electrode at an outer surface thereof and at least one electrode at an inner surface thereof. The piezoelectric material is applied on the inner circumference of the tubular supporting substrate. | 01-14-2010 |
20100121398 | IMPLANTABLE MEDICAL DEVICE AND METHOD FOR MONITORING VALVE MOVEMENTS OF A HEART - An implantable medical device for monitoring the movements of the valve planes of the heart to determine at least one hemodynamic measure reflecting a mechanical functioning of a heart of a patient, includes an impedance measuring circuit that measures impedance between at least electrode pairs including at least one electrode placed substantially at the level of the valve plane. The measured impedances reflect valve plane movements. A hemodynamic parameter determining circuit determines at least one hemodynamic parameter based on the impedances reflecting the mechanical functioning of the heart. | 05-13-2010 |
20100185252 | DEVICE AND METHOD OF A MEDICAL IMPLANT FOR MONITORING PROGRESSION OF HEART FAILURE IN A HUMAN HEART - In a device and method for a medical implant for monitoring progression of heart failure in a human heart, an activity sensor provides information related to the activity level of a patient and an oxygen sensor provides information related to the level of oxygen content in venous blood. A determined level of venous oxygen content at a determined activity level is obtained, and that level of venous oxygen content is compared to stored values at a corresponding activity level. The result of the comparison is used as a basis for determining a degree of heart failure. | 07-22-2010 |
20110017841 | JETTING DEVICE AND METHOD AT A JETTING DEVICE - A method and a system for jetting droplets of viscous medium, such as solder paste, onto a substrate, such as an electronic circuit board. The volume of the droplets are adjusted by regulating the amount of viscous medium that is fed into a jetting nozzle for subsequent jetting of the viscous medium droplets therefrom. The exit velocity of the jetted droplets is adjusted or maintained substantially constant by regulating the velocity with which the viscous medium is impacted. Furthermore, the rate at which viscous medium is fed, for instance by a feed screw, into the nozzle is adjusted in order to regulate the feeding time required for feeding the viscous medium into the jetting nozzle, for instance in order to maintain a constant feeding time. | 01-27-2011 |
20120089035 | IMPLANTABLE CARDIAC STIMULATOR, SYSTEM, DEVICE AND METHOD FOR MONITORING CARDIAC SYNCHRONY - In a system and method for monitoring cardiac synchrony in a human heart, a first sensor is positioned at a first cardiac wall location that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and measures the cardiac wall movements at the first cardiac wall location and a second sensor is positioned at a second cardiac wall location that is subject to movements related to longitudinal valve plane movements along the longitudinal axis of the heart, and measures the cardiac wall movements at the second cardiac wall location. A lead arrangement conducts respective output signals from the first and second sensors to processing circuitry that processes the first and second sensor output signals to produce a synchronization signal therefrom indicative of synchrony in the respective valve plane movements at the first and second cardiac wall locations. | 04-12-2012 |
20120276279 | PIEZOELECTRIC FILM - A method for producing a biocompatible material of the formula Na | 11-01-2012 |
20120282451 | PIEZOELECTRIC FILM - A method for producing a biocompatible material of the formula Na | 11-08-2012 |
20120289807 | PIEZOELECTRIC FILM - A method for producing a biocompatible material of the formula Na | 11-15-2012 |