Patent application number | Description | Published |
20100023092 | ENERGY TRANSFER AMPLIFICATION FOR INTRABODY DEVICES - Apparatus for driving current in a power circuit of a medical device inserted into a body of a subject includes a power transmitter, which is adapted to generate, in a vicinity of the body, an electromagnetic field having a predetermined frequency capable of inductively driving the current in the power circuit. A passive energy transfer amplifier, having a resonant response at the frequency of the electromagnetic field is placed in proximity to the medical device so as to enhance the current driven in the power circuit by the electromagnetic field. | 01-28-2010 |
20100023093 | ENERGY TRANSFER AMPLIFICATION FOR INTRABODY DEVICES - Apparatus for driving current in a power circuit of a medical device inserted into a body of a subject includes a power transmitter, which is adapted to generate, in a vicinity of the body, an electromagnetic field having a predetermined frequency capable of inductively driving the current in the power circuit. A passive energy transfer amplifier, having a resonant response at the frequency of the electromagnetic field is placed in proximity to the medical device so as to enhance the current driven in the power circuit by the electromagnetic field. | 01-28-2010 |
20100121393 | ISOLATION OF SENSING CIRCUIT FROM PACE GENERATOR - In a system for sensing electrical signals within a living body, and specifically for tracking location of an object in the body using impedance measurements, an isolation circuit maintains isolation between the pacing and position sensing circuits, even while the heart is being paced. | 05-13-2010 |
20120109242 | ROUTING OF PACING SIGNALS - An apparatus includes a sensing unit and control circuitry. The sensing unit is connected to a channel that delivers Electro-Physiological (EP) signals from a cardiac catheter to an EP recording system and pacing signals from the EP recording system to the catheter. The sensing unit is configured to automatically identify time intervals during which the pacing signals are delivered. The control circuitry is configured to route the EP signals on the channel from the catheter to the EP recording system via an intervening system that is detrimental to the pacing signals, to switch the channel to an alternate path that bypasses the intervening system during the identified time intervals, and to route the pacing signals from the EP recording system to the cardiac catheter over the alternate path. | 05-03-2012 |
20120195078 | PREVENTION OF SAFETY HAZARDS DUE TO LEAKAGE CURRENT - Medical apparatus includes an electrical power supply, which is configured for connection to an electrical medical device that is coupled to a body of a patient. In one embodiment, the apparatus includes alternating current (AC) lines that include a ground line. A switch is coupled to connect and disconnect the AC lines from an AC power source. A current sensor is coupled to sense a current flowing in the ground line and to actuate the switch to disconnect the AC lines when the current exceeds a predetermined threshold. In another embodiment, a plurality of electrocardiogram (ECG) leads, including a common lead, are coupled to the body of the patient. An auxiliary current sensor is coupled to monitor a current flowing through the common lead and to actuate the switch to disconnect the power connection when the current exceeds a predetermined limit. | 08-02-2012 |
20130330701 | PHYSICAL HEART SIMULATOR - Apparatus, including a mockup cavity, simulating an actual body cavity of a human subject, wherein walls defining the mockup cavity comprise a tissue equivalent material (TEM). An array of electrodes are embedded in the walls. The apparatus further includes a programmable signal generator, connected to the electrodes, and configured to apply varying potentials to the array of electrodes so as to simulate electrophysiological potentials occurring in the actual body cavity on surfaces of the walls. | 12-12-2013 |
20140155723 | MULTI-CHANNEL ECG MEASUREMENT - A method for acquiring electrical signals from a living subject, including injecting, via an injection electrode attached to the subject, a known calibration signal to the subject and measuring respective levels of output signals generated at input electrodes attached to the subject in response to the calibration signal. The method further includes deriving respective weighting factors for the input electrodes in response to the respective levels, and applying the respective weighting factors to physiological signals acquired by the input electrodes, so as to generate respective corrected physiological signals. | 06-05-2014 |
20140378902 | ELECTROCARDIOGRAM NOISE REDUCTION - Methods and systems of catheterization include a flexible catheter adapted for insertion into a heart of a living subject. The catheter has a lumen for passing an electrically conductive fluid therethrough with the fluid exiting the catheter at the distal portion. The lumen is connectable to an irrigation pump to form a fluid communication therewith. A fluid reservoir connected to the lumen supplies the fluid to the catheter. Electrocardiogram circuitry is connectable to the subject for monitoring electrical activity in the heart. An electrically conductive cable diverts induced charges in the fluid from the catheter electrodes, for example by connection to an isolated ground of the electrocardiogram. | 12-25-2014 |