| Patent application number | Description | Published |
|---|
| 20080221425 | System and method for local deformable registration of a catheter navigation system to image data or a model - A method for registering a catheter navigation system to a three-dimensional image generally includes obtaining a three-dimensional image including position information for a plurality of surface points on a part of a patient's body, using a catheter navigation system to place a tool at a location on the surface of the patient's body, measuring position information for the surface location, identifying a corresponding location on the image, associating position information for the surface location and the location identified on the image as a fiducial pair, and using at least one fiducial pair to generate a mapping function. The mapping function transforms points within the coordinate system of the catheter navigation to the coordinate system of the three-dimensional image such that, for each fiducial pair, the mapping error is about zero. Suitable warping algorithms include thin plate splines, mean value coordinates, and radial basis function networks. | 09-11-2008 |
| 20080221438 | AUTOMATED CATALOG AND SYSTEM FOR CORRECTION OF INHOMOGENEOUS FIELDS - A method for providing a localization system with detailed information regarding a catheter's construction, while at the same time preventing operator input errors, for use in a three-dimensional localization field, including providing a catheter having at least one feature, providing a catheter catalog for use by the localization system, wherein the catheter catalog comprises reference data relating to features of the catheter, placing the catheter into the localization field, creating a map with the localization field, locating the catheter on the map, and correlating features of the catheter within the localization field with measurements made by the localization system when the feature is at various locations. | 09-11-2008 |
| 20080221643 | System and method for correction of inhomogeneous fields - A method for determining a location of an object in a three-dimensional localization field created by a localization system includes the following steps: providing a catheter having known spacing between electrodes; providing a lookup table of data correlating locations of an object within the localization field with measurements made by the localization system; placing the catheter into the localization field; using the localization system to determine the location of the electrodes based on the lookup table; calculating an observed distance between electrodes; comparing the observed distance to the known electrode spacing; and adjusting the lookup table to more accurately measure the spacing of the electrodes. A Kernel function, such as the derivative of a Gaussian function, may be used to update the lookup table. | 09-11-2008 |
| 20090171196 | METHOD AND APPARATUS FOR ENCODING INTERVENTIONAL DEVICES - An imaging system comprises an image acquisition device configured to image certain internal anatomic structures of a patient, and an interventional device, at least a portion of which is configured to be inserted into the body of a patient. The interventional device includes one or more markers disposed on the insertable portion(s) of the interventional device. The material of which the marker is formed is suitable for detection by the image acquisition device, and is arranged in an identifying pattern. The image acquisition device is configured to detect the marker and to read the identifying pattern. In response to the detection and reading of the pattern, the image acquisition device is configured to identify and track the position of the interventional device. | 07-02-2009 |
| 20090171201 | METHOD AND APPARATUS FOR REAL-TIME HEMODYNAMIC MONITORING - The invention relates to an apparatus for monitoring hemodynamic performance of a cardiac chamber. In one embodiment, the apparatus takes real time measurements of the volume and pressure of the cardiac chamber and prepares a PV loop. The apparatus may include an intracardiac echocardiogram catheter with a pressure sensor positioned to measure intracardiac pressure when the distal end of the catheter is deployed in a cardiac chamber. The apparatus may further include control circuitry that receives heart wall surface image data signals from the ultrasound transducer and intracardiac pressure data signals from the pressure senor and generates pressure-volume loop data signals from the surface image data signals and intracardiac pressure data signals in real time. | 07-02-2009 |
| 20090171338 | SYSTEM AND METHOD FOR PREVENTING COLLATERAL DAMAGE WITH INTERVENTIONAL MEDICAL PROCEDURES - A system for performing an interventional medical procedure is disclosed. The system includes a treatment device having a treatment portion, a localization system, and a means for defining a boundary about the treatment portion relative to location data point. The system may further be configured to provide a response when a portion of the treatment device enter or leaves a defined boundary, region, or range. Methods for performing interventional medical procedures that, among other things, reduce or prevent collateral damage to non-target regions are also disclosed. | 07-02-2009 |
| 20090171627 | System and Method for Surface Reconstruction from an Unstructured Point Set - A method of modeling a surface from a plurality of geometry points representing an object generally includes binning the plurality of geometry points into an n-dimensional array of cells and associating a binary value with each cell; applying a dilation algorithm to the binned plurality of geometry points to output a dilated binary representation of the plurality of geometry points; applying an erosion algorithm to the dilated binary representation of the plurality of geometry points to output a segmented volume; and applying a surface construction algorithm to the segmented volume to form a surface model of the object. | 07-02-2009 |
| 20100073150 | ROBOTIC CATHETER SYSTEM INCLUDING HAPTIC FEEDBACK - A haptic feedback system for a robotic catheter system including a robotic catheter manipulator assembly including one or more removably mounted robotic catheter device cartridges and robotic sheath device cartridges, with each cartridge being generally linearly movable relative to the robotic catheter manipulator assembly. The haptic feedback system may include a user interface device for controlling an operation associated with the catheter and/or sheath device cartridges, and a control system for evaluating a predetermined and/or a measured operational parameter of the haptic feedback system. The user interface device may provide haptic feedback to a user based on the evaluation by the control system. | 03-25-2010 |
| 20100168558 | METHOD AND APPARATUS FOR THE CANCELLATION OF MOTION ARTIFACTS IN MEDICAL INTERVENTIONAL NAVIGATION - A method and apparatus for mapping a location of a point within the body is disclosed. A plurality of positional reference nodes are determined, each aligned on a first element. A second element is mapped with reference to the plurality of reference nodes to determine the relative location of a point on the second element. | 07-01-2010 |
| 20110087091 | METHOD AND APPARATUS FOR COLLECTION OF CARDIAC GEOMETRY BASED ON OPTICAL OR MAGNETIC TRACKING - A cardiac imaging system including an imaging module including an ultrasound emitter and one or more position markers. A tracking and control system may include a position sensing system for sensing a location and orientation of the position marker relative to a predetermined reference. The tracking and control system may be operable with the imaging module to produce at least a three dimensional image of a patient's anatomy. A method of cardiac imaging may include operatively attaching one or more position markers to an imaging module including an ultrasound emitter. The method may further include sensing a location and orientation of the position marker relative to a predetermined reference, and producing at least a three dimensional image of a patient's anatomy by evaluating one or more images obtained by the imaging module and aligning the image(s) obtained by the imaging module relative to the location and orientation of the position marker. | 04-14-2011 |
| 20110144806 | INTELLIGENT INPUT DEVICE CONTROLLER FOR A ROBOTIC CATHETER SYSTEM - A robotic catheter system includes a robotic controller; a robotic manipulator; and in input controller. The input controller includes communication circuitry configured to receive a signal from a user input device; memory having stored therein a plurality of device drivers associated with a different type of input device or a differently configured input device; and a processor configured to recognize an input device connected with the communications circuitry, load a device driver according to the recognized input device, initialize the input device, and/or one of reject and notify an end user, and deliver an image to a display or graphical user interface. | 06-16-2011 |
