Patent application number | Description | Published |
20090262109 | ILLUSTRATING A THREE-DIMENSIONAL NATURE OF A DATA SET ON A TWO-DIMENSIONAL DISPLAY - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090262979 | Determining a Material Flow Characteristic in a Structure - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090262980 | Method and Apparatus for Determining Tracking a Virtual Point Defined Relative to a Tracked Member - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090262982 | Determining a Location of a Member - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090262992 | Method And Apparatus For Mapping A Structure - An area of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of an area or volume can be determined based upon the sensing of the plurality of points without the use of an imaging device. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264727 | METHOD AND APPARATUS FOR MAPPING A STRUCTURE - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264738 | METHOD AND APPARATUS FOR MAPPING A STRUCTURE - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264740 | Locating an Introducer - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264741 | Determining a Size of A Representation of A Tracked Member - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264742 | Determining and Illustrating a Structure - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264743 | Interference Blocking and Frequency Selection - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264744 | Reference Structure for a Tracking System - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264745 | Method and Apparatus To Synchronize a Location Determination in a Structure With a Characteristic of the Structure - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264746 | TRACKING A GUIDE MEMBER - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264747 | DETERMINING AND ILLUSTRATING TRACKING SYSTEM MEMBERS - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264748 | VOLUMETRICALLY ILLUSTRATING A STRUCTURE - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264749 | IDENTIFYING A STRUCTURE FOR CANNULATION - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264750 | LOCATING A MEMBER IN A STRUCTURE - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264751 | DETERMINING THE POSITION OF AN ELECTRODE RELATIVE TO AN INSULATIVE COVER - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264752 | Method And Apparatus For Mapping A Structure - An area of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of an area or volume can be determined based upon the sensing of the plurality of points without the use of an imaging device. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264777 | Determining a Flow Characteristic of a Material in a Structure - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090264778 | Uni-Polar and Bi-Polar Switchable Tracking System between - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090265128 | CORRECTING FOR DISTORTION IN A TRACKING SYSTEM - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-22-2009 |
20090267773 | Multiple Sensor for Structure Identification - An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 10-29-2009 |
20090275843 | SYSTEM AND METHOD OF DETERMINING ARTERIAL BLOOD PRESSURE AND VENTRICULAR FILL PARAMETERS FROM VENTRICULAR BLOOD PRESSURE WAVEFORM DATA - A system and method of determining hemodynamic parameters uses sensed ventricular blood pressure during a portion of ventricular pressure waveform following peak pressure. An estimated arterial diastolic pressure is based upon an amplitude of the sensed ventricular pressure corresponding to a time at which a first derivative of ventricular pressure as a function of time is at a minimum (dP/dt | 11-05-2009 |
20090299198 | ESTIMATING PULMONARY ARTERY DIASTOLIC PRESSURE - A method for estimating pulmonary artery diastolic pressure, for a single heart beat, includes establishing a time window for sampling and storing pressure data points from a right ventricular pressure transducer. The time window may be established according to predetermined parameters and/or according to one or more triggering events. An approximate time at which the pulmonary artery valve opens is determined, either via the sampled pressure data points, or via another form of more direct monitoring, during the time window, in order to estimate the pulmonary artery diastolic pressure. A plurality of sets of N pressure data points may be collected, from the sampled data, and, for each collected set, a weighted sum is calculated. Each weighted sum may be employed to evaluate a quality of the sampled data and/or to estimate the pulmonary artery diastolic pressure, if the more direct monitoring of the pulmonary artery valve is not employed. | 12-03-2009 |
20100113943 | SYSTEM AND METHOD FOR SIMULTANEOUS CENTRAL AND BRACHIAL ARTERIAL PRESSURE MONITORING - An implantable medical device system and corresponding method to monitor blood pressure by transforming a measured pressure signal to estimate a blood pressure metric or waveform corresponding to a target site. An implantable sensor generates a signal corresponding to blood pressure at a first arterial branch location and a processor receiving the signal applies a transfer function to the signal to derive a blood pressure metric or waveform at a target site. | 05-06-2010 |
20100217135 | METHOD AND SYSTEM FOR INTERPRETING HEMODYNAMIC DATA INCORPORATING PATIENT POSTURE INFORMATION - Systems and methods for improving hemodynamic data interpretation by accounting for the effects of patient posture is disclosed. In certain embodiments, a posture signal is acquired and used to categorize hemodynamic data according to posture to facilitate distinguishing posture-related changes in acquired hemodynamic data from those due to pathophysiologic changes. Posture information may be used to normalize data acquired in various postures to facilitate interpretation of such data. Baseline measurements of hemodynamic data acquired in various postures may also be used to subsequently detect changes in patient posture without the need for an implanted posture sensor. | 08-26-2010 |
20110105927 | DETECTION OF WAVEFORM ARTIFACT - An implantable medical device system including a physiological sensor detects signal artifact in a signal waveform acquired by the sensor. Features of individual waveforms in the sensor signal are extracted. Sample waveforms are classified by expert observation into at least two classes including an artifact class. A distribution range for each of the extracted features from the sample waveforms is determined for each of the classes. Waveform classification criteria are established in response to the determined distribution ranges. | 05-05-2011 |
20110152698 | METHOD AND APPARATUS FOR BLOOD PRESSURE WAVEFORM BASELINE ESTIMATION AND REMOVAL - An implantable medical device system including an implantable blood pressure sensor extracts a baseline signal from the sensed blood pressure signal and subtracts the extracted baseline signal from the sensed blood pressure signal to obtain a corrected pressure monitoring signal. The corrected pressure signal is monitored to detect a cardiac-related condition. | 06-23-2011 |
20110160787 | OPTIMIZATION OF AV DELAY USING VENTRICULAR PRESSURE SIGNAL - An implantable medical device system including an intraventricular pressure sensor controls an atrioventricular (AV) delay based on the intraventricular pressure signal. An atrial kick pressure waveform corresponding to active contraction of an atrial chamber is detected from the intraventricular pressure signal. In one embodiment, a time interval corresponding to the atrial kick pressure waveform is measured. An AV delay is set in response to the measured time interval. | 06-30-2011 |
20120130232 | Illustrating a Three-Dimensional Nature of a Data Set on a Two-Dimensional Display - A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data. | 05-24-2012 |
20120150049 | IMPEDANCE MEASUREMENT TO MONITOR ORGAN PERFUSION OR HEMODYNAMIC STATUS - An implantable medical device system and associated method deliver drive signals having different frequencies to establish vector fields comprising an arterial volume and a venous volume corresponding to targeted portion of a patient's body. Impedance signals are determined in response to drive signals having different frequencies. Impedance parameter values are determined over time. A change in the hemodynamic status of a targeted portion of the patient's body is identified in response to the impedance parameter values. | 06-14-2012 |
20120150169 | IMPEDANCE MEASUREMENT TO MONITOR ORGAN PERFUSION OR HEMODYNAMIC STATUS - A system and method for deliverying an ablation therapy that includes delivering the ablation therapy, delivering drive signals to establish a drive signal vector fields, determining impedance signals in response to the drive signals, determining a first impedance parameter in response to the first impedance signal and a second impedance parameter in response to the second impedance signal, determining whether there is a change in a hemodynamic status of the tissue subsequent to delivery of the ablation therapy in response to the first impedance parameter and the second impedance parameter, and adjusting delivery of the ablation therapy in response to determining whether there is a change in a hemodynamic status of the tissue. | 06-14-2012 |
20120197088 | DETECTION OF WAVEFORM ARTIFACT - A medical device system including a physiological sensor is configured to perform a method for detecting signal artifact in a signal waveform acquired by the sensor. A signal waveform is sensed in a patient using the physiological sensor and a fiducial point associated with the sensed waveform is identified. A point value is established using the fiducial point. Signal artifact is detected in response to the established point value and an established threshold, and at least a portion of the signal waveform is rejected in response to detecting signal artifact. | 08-02-2012 |
20120290036 | PHRENIC NERVE STIMULATION DURING CARDIAC REFRACTORY PERIOD - A method includes estimating a cardiac signal of a patient, estimating a length of a cardiac refractory period based in part on the cardiac signal and selectively adjusting the length of phrenic nerve electrical stimulation to be delivered to the patient based on the estimated length of the cardiac refractory period. In some examples the method includes delivering phrenic nerve stimulation for approximately the entire refractory period. The phrenic nerve stimulation may be used to treat a variety of breathing disorders. | 11-15-2012 |
20130030495 | METHOD AND APPARATUS TO DETECT SUBCEREBRAL ISCHEMIA - A medical device and associated method detect ischemia using stimulation delivered to induce respiration. A spontaneous breathing response to the stimulation-induced respiration is determined. Ischemia is detected in response to the spontaneous breathing response. The spontaneous breathing response is measured as a response to adjusting a parameter controlling the stimulation. | 01-31-2013 |
20130030496 | TRANSVENOUS METHOD TO INDUCE RESPIRATION - A system and method for delivering a nerve stimulation therapy determines whether a cardiac EGM signal can be sensed by a bipolar pair of electrodes selected from a number of electrodes positioned for stimulating a nerve. In response to not being able to sense a cardiac signal using the bipolar pair, stimulation of the nerve using a selected pair of the electrodes is enabled. | 01-31-2013 |
20130030497 | NERVE STIMULATOR FOR REDUCED MUSCLE FATIGUE - A system and associated method deliver a respiration therapy. Stimulation pulse trains are delivered to activate a first portion of a patient's diaphragm at an established intended induced respiration rate during a time interval. Stimulation pulse trains are delivered to activate a second portion of a patient's diaphragm at a second rate during the time interval, the second rate being different than the first rate. | 01-31-2013 |
20130030498 | BILATERAL PHRENIC NERVE STIMULATION WITH REDUCED DYSSYNCHRONY - A system and associated method deliver a respiration therapy. Stimulation pulses are delivered to activate a right portion of a patient's diaphragm and to activate a left portion of a patient's diaphragm. A control processor determines dyssynchrony of a respiratory response to the stimulation pulses and adjusts a stimulation control parameter controlling the delivering of the stimulation pulses in response to dyssynchrony of the respiratory response. | 01-31-2013 |
20130116743 | METHOD AND APPARATUS FOR THERAPIES OF THE CARDIOVASCULAR AND CARDIORENAL SYSTEM - A system and method for controlling respiration depth or respiration rate is provided. A bipolar pair of a plurality of electrodes is selected in a location for stimulating a phrenic nerve. Electrical stimulation is delivered through a medical electrical lead electrode proximate phrenic nerve tissue. Modulating respiration is elicited in response to electrical stimulation of the phrenic nerve. | 05-09-2013 |
20130267840 | Method and Apparatus for Mapping a Structure - An area of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of an area or volume can be determined based upon the sensing of the plurality of points without the use of an imaging device. An implantable medical device can then be navigated relative to the mapping data. | 10-10-2013 |
20130289636 | TIMED IMPLANTABLE THERAPY DELIVERY DEVICE - Pulseless electrical activity (PEA) is reduced or eliminated. A medical electrical lead is implanted to deliver high voltage therapy to a fibrillating heart. Another medical electrical lead delivers electrical stimulation through an electrode proximate phrenic nerve tissue in response to the delivery of high voltage therapy to the fibrillating heart. | 10-31-2013 |