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Class 607/99 - Localized application


Subclass of Class 607 - Surgery: light, thermal, and electrical application
Definition: Subject matter for directing the electric current to a defined limited
No. of patents: 465
Last issue date: 03/13/2012


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NumberTitleIssue Date
6117131Multi-electrode probe for thermal ablation
A multi-electrode probe for use with a catheter in an electrophysiological procedure to map and to ablate any of several tissue sites without repositioning the probe includes at least a plurality of electrodes, such as a tip and metallic rings, less than ...
09/12/2000
6113593Ablation apparatus having temperature and force sensing capabilities
An ablation apparatus system for treating tissues in a patient, the ablation apparatus comprising temperature sensing means for measuring a temperature, wherein said temperature sensing means comprises a temperature sensing probe and at least one temperat...
09/05/2000
6113592Apparatus and method for controlling ablation depth
During an ablation procedure in a chamber of the heart RF energy is used to form a myocardial lesion for treatment of some arrhythmias such as sustained supraventricular tachycardia and accessory pathways. A galvanic cell, formed by a metallic electrode h...
09/05/2000
6099526Electrode 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
6086584Cellular sublimation probe and methods
The invention provides exemplary electrosurgical probes and methods for their use. In one exemplary embodiment, an electrosurgical probe comprises a probe body having a proximal end, a distal end and at least one lumen. An electrode assembly is operably c...
07/11/2000
6086581Large 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
6083255Bronchial stenter
A device and method for treating collapsed bronchial tubes found in patients with chronic obstructive pulmonary disease and asthma are provided. The device which has a balloon at a distal end delivers energy so that the tissue is indirectly, i.e., conduct...
07/04/2000
6076012Structures for supporting porous electrode elements
A catheter assembly comprising a elongated, flexible support structure having an axis. The assembly also includes an elongated porous electrode assembly carried by the support structure along the axis for contact with tissue. The elongated porous electrod...
06/13/2000
6073051Apparatus for treating intervertebal discs with electromagnetic energy
An externally guidable intervertebral disc apparatus manipulates tissue at a selected location of an intervertebral disc. The apparatus comprises a catheter having a distal end, a proximal end and a longitudinal axis, the catheter having an intradiscal se...
06/06/2000
6071278Tissue 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
6068628Apparatus for treating chondromalacia
A thermal energy delivery apparatus has a probe including a distal end and a proximal end. A first electrode is positioned at the distal end of the probe such that the electrode is positioned on a recessed longitudinal portion of the probe. The first elec...
05/30/2000
6066134Method for electrosurgical cutting and ablation
An electrosurgical probe (10) comprises a shaft (13) having an electrode array (58) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (5...
05/23/2000
6064902Pulmonary vein ablation catheter
A catheter for ablating and/or mapping tissue on the inner wall of a blood vessel, including a body portion and a tip portion having a proximal section and a distal section, the proximal section including a proximal ablation electrode and a proximal mappi...
05/16/2000
6063077Linear ablation device and assembly
An intravascular device for the formation of linear lesions which has particular utility in the treatment of atrial fibrillation and flutter. The intravascular device has an outer delivery sheath with a distal section which has an elongated opening and a ...
05/16/2000
6053909Ionothermal delivery system and technique for medical procedures
An Rf energy applicator with a working end that carries a bi-polar Rf electrode system for creating a Rf-tissue interaction or ionothermal effect in subsurface tissue (a first ionothermal system) which effect is focused by concurrent actuation of a photon...
04/25/2000
6053912Systems 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
6050992Apparatus and method for treating tissue with multiple electrodes
A probe system for volumetric tissue heating and ablation comprises a cannula having a multiple electrode component reciprocatably mounted therein. Individual electrodes within the array have spring memory so that they assume a radially outward, arcuate c...
04/18/2000
6047215Method and apparatus for electromagnetically assisted liposuction
An improved method and apparatus for facilitating removal of fat from obese, or lipodystrophic patients, by external application of electromagnetic energy. After infiltrating the proposed zone with intumescing solution, radio frequency or microwave electr...
04/04/2000
6042590Apparatus and methods for fallopian tube occlusion
A sterilization device (10) is provided having a flexible housing element (12) that is smaller in diameter than the diameter of the lumen of the isthmic portion of the fallopian tube, a heating element (14) carried by the housing element adjacent to its d...
03/28/2000
6041260Method and apparatus for endometrial ablation
An endometrial ablation apparatus and method wherein an RF current having a frequency of between 250 kHz and 100 MHz is passed through the entire surface of an endometrium in order to provide heating of the endometrium. An electroconductive expandable mem...
03/21/2000
6039731Apparatus and method for determining the extent of ablation
A catheter for use in an electrophysiological procedure to ablate a site includes a first electrode having a first work function and energized by a source of RF energy. A second electrode having a second work function is disposed adjacent tissue. The diff...
03/21/2000
6036688Radio frequency refractive keratectomy apparatus and method
Apparatus for being held by the human hand for performing refractive keratectomy on the eye of a patient by the use of radio frequency energy from a radio frequency generator. An elongate probe has proximal and distal extremities. The proximal extremity i...
03/14/2000
6035238Noninvasive devices, methods, and systems for shrinking of tissues
The invention provides improved devices, methods, and systems for shrinking of collagenated tissues, particularly for treating urinary incontinence in a noninvasive manner by directing energy to a patient's own support tissues. This energy gently heats fa...
03/07/2000
6030379Systems 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
6029091Catheter system having lattice electrodes
A catheter system comprising a delivery catheter and an inner catheter, wherein the inner catheter is deployable and has a plurality of electrodes on the lattices of a trellis fixture. During a deployed state, the trellis fixture is fully extended to have...
02/22/2000
6017338Fluid cooled and perfused tip for a catheter
The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on a tip of a catheter, prevents the impedance rise of tissue in contact with the catheter tip, and maximizes the potential energ...
01/25/2000
6013074Apparatus and method for thermal ablation
A catheter for use in an electrophysiological procedure to ablate a site includes a metallic tip having a first work function and energized by a source of RF energy. The RF energy return path is through a relatively large plate of a metallic material havi...
01/11/2000
6011995Endovascular device for hyperthermia and angioplasty and method for using the same
Hyperthermic treatment of tissue such as cancer tumors, is realized by providing an ohmic heating element on the distal tip of a catheter endovascularly inserted upstream of the tissue. Electrical power is provided to the element for a selected time and d...
01/04/2000
6001094Implantable soluble electrode system
An implantable electrode is provided for treating tissue in a patient with energy. In one variation of this embodiment, the implantable electrode includes a shaft having a length sufficient to extend from outside a body of the patient to adjacent a tissue...
12/14/1999
5998597Method for improved selectivity in photo-activation of molecular agents
A method for the treatment of a particular volume of plant or animal tissue comprising the steps of treating the plant or animal tissue with at least one photo-active molecular agent, wherein the particular volume of the plant or animal tissue retains at ...
12/07/1999
5961513Tissue 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
5957961Multiple sensor, temperature controlled R-F ablation system
A catheter ablation system including a catheter having a distal segment carrying at least one electrode extending along the segment and having a number of temperature sensors arranged along the distal segment adjacent the electrode, each providing an outp...
09/28/1999
5951471Catheter-based coronary sinus mapping and ablation
A catheter-based method for coronary sinus mapping, pacing, and ablation, wherein a flexible electrode catheter, having a tip electrode with suspension structure, is pre-shaped to snugly fit into the coronary sinus, so that the tip electrode is positioned...
09/14/1999
5951546Electrosurgical instrument for tissue ablation, an apparatus, and a method for providing a lesion in damaged and diseased tissue from a mammal
An electrosurgical instrument, an apparatus employing such instrument, and a method for using such instrument and apparatus for tissue ablation, are useful for forming lesions in tissue, whereby tumors, birth marks, or the like may be removed. The electro...
09/14/1999
5928159Apparatus and method for characterization and treatment of tumors
Apparatus and methods are provided for performing an in situ characterization of a tissue mass which may be normal, malignant, or benign, and, based on the measured characteristics of the tissue mass, therapeutically treating the tissue mass to cause necr...
07/27/1999
5925038Expandable-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
5921923Method 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
5908446Catheter assembly, catheter and multi-port introducer for use therewith
A assembly for use in performing a medical procedure within a region in a body of a patient having a vessel therein comprising a multi-port introducer adapted to be inserted into a vessel of the patient. The multi-port introducer includes an elongate body...
06/01/1999
5906613Method for R-F ablation
A method and apparatus for ablation of body tissue. A catheter provided with a hollow needle is employed both for mapping the location to be ablated by injection of an excitability reducing agent and for ablating tissue, employing RF energy in conjunction...
05/25/1999
5897553Ball point fluid-assisted electrocautery device
An electrocautery device is disclosed. In accordance with one aspect of the invention, the electrocautery electrode/tip is provided with a hollow, conductive tube terminating at its distal end in a ball point type tip. Fluid, preferably conductive fluid, ...
04/27/1999
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