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| Number | Title | Issue Date |
| 6516807 | System and methods for locating and guiding operative elements within interior body regions Systems and methods for locating an operative element within an interior body space use a locating probe, which includes at least one transmitting element to transmit an electric waveform output within at least a portion of the space. The systems and meth... | 02/11/2003 |
| 6485455 | Catheter steering assembly providing asymmetric left and right curve configurations A catheter has an electrode tip assembly that is bendable at the selection of the user in two different directions. The electrode tip assembly assumes different asymmetric predetermined curve configurations when bent in the two directions and is manipulat... | 11/26/2002 |
| 6460545 | Medical device with three dimensional collapsible basket structure An electrode support structure has a slotted hub and an integral body with a mid-section and opposed pair of spline elements that extend from the mid-section. The mid-section is captured within the slot, securing the integral body to the hub with the oppo... | 10/08/2002 |
| 6456864 | Systems and methods for guiding movable electrode elements within multiple-electrode structures 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 e... | 09/24/2002 |
| 6293943 | Tissue heating and ablation systems and methods which predict maximum tissue temperature Systems and methods heat or ablate body tissue by positioning an electrode to transmit heat or ablation energy to a tissue region. The systems and methods measure a first temperature using a temperature sensing element associated with the electrode. The s... | 09/25/2001 |
| 6241724 | Systems and methods for creating lesions in body tissue using segmented electrode assemblies A multiple electrode array for ablating tissue carries at least two electrode segments that are circumferentially spaced from each other. Insulation electrically isolates the separated electrode segments from each other. Signal wires attached to the separ... | 06/05/2001 |
| 6216044 | Medical device with three dimensional collapsible basket structure An electrode support structure has a slotted hub and an integral body with a mid-section and opposed pair of spline elements that extend from the mid-section. The mid-section is captured within the slot, securing the integral body to the hub with the oppo... | 04/10/2001 |
| 6179835 | Expandable-collapsible electrode structures made of electrically conductive material Electrode assemblies and associated systems employ a nonporous wall having an exterior for contacting tissue. The exterior peripherally surrounds an interior area. The wall is essentially free of electrically conductive material. The wall is adapted to as... | 01/30/2001 |
| 6165169 | Systems and methods for identifying the physical, mechanical, and functional attributes of multiple electrode arrays 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 prope... | 12/26/2000 |
| 6099526 | Electrode structure including hydrophilic material Electrode structures are formed from flexible, porous, or woven materials. One such structure is made by forming first and second body sections, each including a peripheral edge. The first and second body sections are joined together about their periphera... | 08/08/2000 |
| 6095150 | Systems and methods for locating and guiding operative elements within interior body regions Systems and methods for locating an operative element within an interior body space use a locating probe, which includes at least one transmitting element to transmit an electric waveform output within at least a portion of the space. The systems and meth... | 08/01/2000 |
| 6086581 | Large surface cardiac ablation catheter that assumes a low profile during introduction into the heart A cardiac ablation catheter has an energy emitting surface for thermally destroying tissue. The surface normally presents a compact, low profile for introduction into the heart. Once introduced, the energy emitting surface can be significantly enlarged. T... | 07/11/2000 |
| 6071278 | Tissue heating and ablation systems and methods using porous electrode structures with specified electrical resistivities Systems and methods for heating or ablating tissue use a porous electrode. The porous electrode comprises a wall having an interior area that contains an electrically conductive element. At least a portion of the wall comprises a porous material sized to ... | 06/06/2000 |
| 6070094 | Systems and methods for guiding movable electrode elements within multiple-electrode structures 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 e... | 05/30/2000 |
| 6053912 | Systems and methods for sensing sub-surface temperatures in body tissue during ablation with actively cooled electrodes Systems and associated methods for ablating body tissue employ an electrode for contacting tissue to form a tissue-electrode interface. The electrode is adapted to be connected to a source of ablation energy to conduct ablation energy for transmission by ... | 04/25/2000 |
| 6047218 | Systems and methods for visualizing interior tissue regions 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... | 04/04/2000 |
| 6030379 | Systems and methods for seeking sub-surface temperature conditions during tissue ablation Systems and methods for ablating body tissue use an ablation element for contacting tissue to form a tissue interface. The ablation element is adapted to be connected to a source of ablation energy to conduct ablation energy for transmission by the ablati... | 02/29/2000 |
| 6022346 | Tissue heating and ablation systems and methods using self-heated electrodes Systems and methods using an electrode able to transmit heating or ablation energy into tissue include first and second sensing elements associated with the electrode for measuring first and second temperatures. The electrode also includes a heating eleme... | 02/08/2000 |
| 6014590 | Systems and methods employing structures having asymmetric mechanical properties to support diagnostic or therapeutic elements in contact with tissue in interior body regions Structures having asymmetric mechanical properties provide enhanced ability to support therapeutic or diagnostic elements in contact with tissue in an interior body region. The support structure includes a first region, which exhibits a first mechanical p... | 01/11/2000 |
| 6014581 | Interface for performing a diagnostic or therapeutic procedure on heart tissue with an electrode structure An interface for performing a diagnostic or therapeutic procedure on heart tissue with an electrode structure includes a controller which operates to establish an operating condition for the electrode structure, a processing unit coupled to the controller... | 01/11/2000 |
| 5984907 | Transition sleeve assembly for catheters A sleeve assembly for use in the transition region of a catheter between a relatively stiff catheter body and a less stiff distal catheter region mediates the difference in stiffness between these two catheter regions.... | 11/16/1999 |
| 5968040 | Systems and methods using asymmetric multiple electrode arrays 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 ... | 10/19/1999 |
| 5964753 | Integrated cardiac mapping and ablation probe A probe for cardiac diagnosis and/or treatment has a catheter tube. The distal end of the catheter tube carries first and second electrode elements. The probe includes a mechanism for steering the first electrode element relative to the second electrode e... | 10/12/1999 |
| 5961513 | Tissue heating and ablation systems and methods using porous electrode structures Porous electrode assemblies for tissue heating and ablation systems and methods enable ionic transport of electrical energy to occur substantially free of liquid perfusion.... | 10/05/1999 |
| 5954662 | Systems and methods for acquiring endocardially or epicardially paced electrocardiograms Systems and methods acquire electrocardiograms using a first electrode associated with a region of heart tissue and a second body surface electrode. An analog or digital processing element is coupled to the first and second electrodes for conditioning the... | 09/21/1999 |
| 5941251 | Systems for locating and guiding operative elements within interior body regions Systems and methods for locating an operative element within an interior body space use a locating probe, which includes at least one transmitting element to transmit an electric waveform output within at least a portion of the space. The systems and meth... | 08/24/1999 |
| 5935079 | Systems and methods for positioning multiple electrode structures in electrical contact with the myocardium Systems and methods evaluate electrical contact between the myocardium and one or more electrodes inside the heart. The systems and methods electrically sense electrical contact between the myocardium and electrodes and generate unitary contact-indicating... | 08/10/1999 |
| 5928228 | Flexible high density multiple electrode circuit assemblies employing ribbon cable An electrode circuit has a distal region for carrying at least one electrode, a proximal region for connection to external apparatus, and an intermediate region electrically coupling the distal region with the proximal region. At least one, and preferably... | 07/27/1999 |
| 5925038 | Expandable-collapsible electrode structures for capacitive coupling to tissue Electrode assemblies and associated systems employ a nonporous wall having an exterior for contacting tissue. The exterior peripherally surrounds an interior area. The wall is essentially free of electrically conductive material. The wall is adapted to as... | 07/20/1999 |
| 5921923 | Method for locating accessory pathways in the heart using multiple pairs of sensing electrodes A multiple electrode array senses electrical events in heart tissue at different orientations in a localized region. First, second, and third electrode elements are spaced apart along different axes. The electrodes are electrically isolated from each othe... | 07/13/1999 |
| 5911720 | Ablation catheter with segmented tip An ablation catheter having self assembling large surface area distal component provided with one or more energy emitting surfaces for thermally destroying tissue. The distal component is oriented to present a compact, low profile for introduction into th... | 06/15/1999 |
| 5911739 | Structures for supporting diagnostic or therapeutic elements in internal body regions Elongated spline members are threaded through a hub to form depending spline legs. In one embodiment, the spline members are threaded through a puncturable material on the hub. In another embodiment, the spline members are threaded through a slotted hub, ... | 06/15/1999 |
| 5908445 | Systems for visualizing interior tissue regions including an actuator to move imaging element 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... | 06/01/1999 |
| 5906590 | Bidirectional steerable catheter with deflectable distal tip A bidirectional catheter with a deflectable tip at a distal end includes a handle at a proximal end and a tubular member extending between the tip and the handle. The handle includes a first piston member slidably mounted in a handle base with proximal en... | 05/25/1999 |
| 5904651 | Systems and methods for visualizing tissue during diagnostic or therapeutic procedures A catheter tube carries an imaging element for visualizing tissue. The catheter tube also carries a support structure, which extends beyond the imaging element for contacting surrounding tissue away from the imaging element. The support element stabilizes... | 05/18/1999 |
| 5904680 | Multiple electrode support structures having optimal bio-mechanical characteristics An electrode support structure comprises a distal hub and a proximal base aligned along a major axis with the distal hub. An array of generally flexible spline elements extend between the hub and the base. The spline elements each have an elongated axis t... | 05/18/1999 |
| 5902291 | Spring assembly for catheter A catheter having a proximal portion and a distal portion terminating in a distal tip, is provided with a spring assembly contained within its distal tip portion for providing a bias against side to side deflection of the distal tip. The assembly preferab... | 05/11/1999 |
| 5893847 | Multiple electrode support structures with slotted hub and hoop spline elements An electrode support structure has a slotted hub and an integral body with a mid-section and opposed pair of spline elements that extend from the mid-section. The mid-section is captured within the slot, securing the integral body to the hub with the oppo... | 04/13/1999 |
| 5891088 | Catheter steering assembly providing asymmetric left and right curve configurations A catheter has an electrode tip assembly that is bendable at the selection of the user in two different directions. The electrode tip assembly assumes different asymmetric predetermined curve configurations when bent in the two directions and is manipulat... | 04/06/1999 |
| 5891135 | Stem elements for securing tubing and electrical wires to expandable-collapsible electrode structures A collapsible electrode body is assembled to an end of a catheter tube. A generally rigid stem element having an exterior diameter is connected to the catheter tube. A flexible tube, which has an initial interior diameter smaller than the exterior diamete... | 04/06/1999 |
