摘要:
A graphical user interface (GUI) is provided for assisting medical personnel in interpreting data collected by a multiple electrode catheter deployed within the body. The GUI generates and displays an image of the multiple electrode catheter. By manipulating appropriate controls, the medical personnel are able to change the orientation of the displayed image until it matches the orientation of the actual multiple electrode catheter as seen on a fluoroscope. Afterwards, the medical personnel can determine the relative position and orientation of the catheter by reference to the GUI generated image. To aid in interpreting data recovered by the catheter, the individual electrodes and splines are highlighted and labeled. Electrodes recovering particular types of physiological waveforms can be automatically identified and highlighted. Comments and anatomic landmarks can be inserted where desired to further assist in interpreting data. Views from various, virtual fluoroangles can be obtained, and various images can be recorded, stored and printed. The position of a roving electrode can also be indicated.
摘要:
Systems and associated methods place a temperature sensing element in an “edge regions” between an energy transmitting electrode and a non-electrically conducting support body, where higher temperatures are likely to exist. Reliable temperature sensing, which is sensitive to variations in temperatures along the electrode, results.
摘要:
Systems and methods identify the physical, mechanical, and functional attributes of multiple electrode arrays. The systems and methods provide a structure adapted for contact with tissue in an interior body region. The structure possesses a physical property affecting tissue contact. The systems and methods include an identification code that uniquely identifies the physical property of the structure, such as size of the structure, or shape of the structure, or symmetry or lack of symmetry of the structure, or a stiffness value of the structure, or combinations thereof. The systems and methods also include an identification element attached in association with the structure to retain the identification code. The identification element is adapted to provide an output representative of the identification code. The structure also carries at least one electrode. The electrode possesses-a physical property, or both. The identification code uniquely identifies both the physical property of the structure and the physical or functional property of the electrode. The identification element retains one or more of these physical or functional properties for output and consideration prior to use of the structure.
摘要:
Systems and associated methods position arrays of multiple emitters of ablating energy in straight or curvilinear positions in contact with tissue to form elongated lesion patterns. The elongated lesion patterns can continuous or interrupted, depending upon the orientation of the energy emitters.
摘要:
An interface is associated with a structure which, in use, is deployed in an interior body region of a patient. The structure includes an operative element coupled to a controller, which establishes an operating condition for the operative element to perform a diagnostic or therapeutic procedure in the interior body region. The interface generates a first display comprising an image of the structure at least partially while the operative element performs the procedure. The interface also generates a second display comprising one or more data fields reflecting the operating condition of the controller. The interface enables selection of the first display or the second display for viewing on a display screen.
摘要:
Systems and related methods guide a movable electrode within an array of multiple electrodes located within the body. The systems and methods employ the movable electrode or at least one of the multiple electrodes on the array to generate and then sense electrical or sonic energy in a predetermined fashion to generates an output that locates the movable electrode within the array.
摘要:
Systems and methods support arrays of multiple electrodes in asymmetric pattern, either radially, or axially, or both. Radial asymmetry makes it possible provide localized density of electrodes. Axial asymmetry makes it possible to locate electrodes in a pattern that closely conforms to the irregular contours of an interior body cavity, like the heart. In a preferred embodiment, the systems and methods operate the multiple electrode arrays to form continuous lesion patterns.
摘要:
An imaging element characterizes tissue morphology by analyzing perfusion patterns of a contrast media in tissue visualized by the imaging element, to identify infarcted tissue. In a preferred implementation, a catheter tube introduced into a heart region carries the imaging element, as well as a support structure spaced from the imaging element, which contacts endocardial tissue. The imaging element is moved as the imaging element visualizes tissue. A selected electrical event is sensed in surrounding myocardial tissue, which regulates movement of the imaging element. The support element stabilizes the moving imaging element as it visualizes tissue, providing resistance to dislodgment or disorientation despite the presence of dynamic forces.
摘要:
An imaging structure has a periphery adapted to selectively assume an expanded geometry and a collapsed geometry. The periphery of the imaging structure carries an array of spaced apart ultrasound transducers.
摘要:
An analog or digital processing element and associated method analyses electrograms or electrocardiograms to locate sites potentially appropriate for ablation. The element and method compares a first number of electrogram or electrocardiogram samples recorded over time during a cardiac event of known diagnosis with a second number of paced electrogram or electrocardiogram samples recorded over time. The comparison cross-correlates the first number of electrogram samples with the second number of paced electrogram samples. The element and method generate an output based upon the cross-correlation. The element and method compare the output to a predetermined value to determine whether a pacing site for the paced electrogram or electrocardiogram samples is near to a potential ablation site.