Patents Examined by Rosiland S. Kearney
  • Patent number: 6584360
    Abstract: A device for monitoring temperature generated by an ablation apparatus on organic tissue is provided. The device comprises a temperature sensing pad; and an output device to receive and display a representation of a lesion found on the ablated organic tissue. Ablation systems incorporating the device and methods of using the device are also provided.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: June 24, 2003
    Assignee: Medtronic Inc.
    Inventors: David E. Francischelli, Scott E. Jahns, James R. Keogh
  • Patent number: 6582455
    Abstract: The invention provides a method and device for selectively controlling the temperature of a selected organ of a patient for performance of a specified application. The method includes introducing a guide catheter into a blood vessel. The guide catheter may have a soft tip and a retaining flange, and may be used to provide treatments such as administration of thrombolytic drug therapies, stenting procedures, angiographic procedures, etc. A supply tube is provided having a heat transfer element attached to a distal end thereof. The heat transfer element having a plurality of exterior surface irregularities, these surface irregularities having a depth greater than the boundary layer thickness of flow in the feeding artery of the selected organ. The supply tube and heat transfer element may be inserted through the guide catheter to place the heat transfer element in the feeding artery of the selected organ.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: June 24, 2003
    Assignee: Innercool Therapies, Inc.
    Inventors: John D. Dobak, III, Juan C. Lasheras, Randell L. Werneth
  • Patent number: 6582426
    Abstract: A modular biopsy, ablation and track coagulation needle apparatus is disclosed that allows the biopsy needle to be inserted into the delivery needle and removed when not needed, and that allows an inner ablation needle to be introduced and coaxially engaged with the delivery needle to more effectively biopsy a tumor, ablate it and coagulate the track through ablation while reducing blood loss and track seeding. The ablation needle and biopsy needle are adapted to in situ assembly with the delivery needle. In a preferred embodiment, the ablation needle, when engaged with the delivery needle forms a coaxial connector adapted to electrically couple to an ablating source. Methods for biopsying and ablating tumors using the device and coagulating the track upon device removal are also provided.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: June 24, 2003
    Assignee: Vivant Medical, Inc.
    Inventors: Jack W. Moorman, M. Elizabeth Bush
  • Patent number: 6565561
    Abstract: An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft (10), and a tissue treatment electrode (12) at the distal end of the shaft for electrosurgically excising tissue pieces at an operation site. The tissue treatment electrode (12) is cyclically movable relative to the distal end of the shaft (10). Threshold control means are provided for controlling the power threshold for vaporisation of the electrically-conductive fluid medium at the tissue treatment electrode (12).
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: May 20, 2003
    Assignee: Cyrus Medical Limited
    Inventors: Nigel M. Goble, Colin C. O. Goble, Alan N. Syrop
  • Patent number: 6565560
    Abstract: An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft (10), a tissue treatment electrode (12) at one end of the shaft, and removal means, the instrument having an apertured portion (20a) through which matter can be aspirated by the removal means from the region surrounding the tissue treatment electrode. The removal means comprises a channel formed within the instrument shaft (10) and leading from the apertured portion (20a). The channel is provided with agitation means (14) for preventing the build-up of sublimation products within the channel.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: May 20, 2003
    Assignee: Gyrus Medical Limited
    Inventors: Nigel M Goble, Colin CO Goble, Alan N Syrop
  • Patent number: 6565556
    Abstract: The invention relates to a cryoinstrument which is provided for carrying out cryosurgical interventions in the area of human and veterinary medicine, especially for treating tumors, and in the area of phytopathology and which is connected to a connecting device of a cryogenic appliance or system. The inventive cryoinstrument is comprised of a housing (1) in which a line is located that is provided for the direct flow (2) and for the return flow (3) of a cryogenic medium, e.g. liquid nitrogen. The housing has at least one closed end piece (4) which forms a working surface (5) with an exterior side (6) for cooling a tissue, and has a temperature sensor (7). In order to be able to constantly maintain the minimal temperature, in particular, between −40° C. and −196° C.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: May 20, 2003
    Inventors: Nikolai Korpan, Jaroslav Zharkov
  • Patent number: 6562037
    Abstract: A technique for bonding soft biological tissue having an incision therein with forceps adapted to grip a portion of the tissue on both sides of the incision. Electrodes are secured to the forceps for contacting the tissue portion. An electrical power source provides a high frequency electrical signal to the electrodes to be passed through the tissue portion. The electrical power source is controlled to provide the electrodes with one voltage signal during a first of two stages, and another voltage signal during a second of the two stages. During the first stage the voltage rises linearly. During the second stage, the voltage is stabilized and is modulated with a low frequency rectangular signal. A clamping means applies force with the forceps to compress the tissue at one level or at different levels during two time periods while the high frequency voltage is passed through the electrodes. The tissue impedance is measured as a function of time, with its minimal value being determined and stored.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: May 13, 2003
    Inventors: Boris E. Paton, Vladimir K. Lebedev, David S. Vorona, Volodimir I. Karchemsky, Yuri A. Furmanov, Alexsey V. Lebedev, Valery A. Vasilchenko, Dmitry F. Sidorenko, Vitaly P. Iemchenko-Ribko, Olga N. Ivanova, Alexandr Y. Furmanov, Yevgen V. Zhyvodernikov, Andrei A. Lyashenko, Irina M. Savitskaya
  • Patent number: 6551313
    Abstract: An electrosurgical instrument having a working end that utilizes a coagulation surface and a cutting surface that can be moved relative to each other and wherein only one of the two surfaces is electrically enabled depending on their relative positions. The user can then depress a switch to activate the electrically enabled surface.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: April 22, 2003
    Inventor: John M. Levin
  • Patent number: 6546932
    Abstract: A method of promoting blood vessel growth includes the steps of providing a cryocatheter having a thermally transmission region; placing the cryocatheter proximate an area of tissue to be treated; cooling the thermally transmissive region of the cryocatheter proximate the area of tissue to a temperature sufficient to injure the area of tissue; allowing the area of tissue to warm; and removing the cryocatheter from the area of tissue. Prior, during or after the cooling step, the area of tissue can be mechanically traumatized, and drugs can be injected into the tissue.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: April 15, 2003
    Assignee: CryoCath Technologies Inc.
    Inventors: Daniel Nahon, Mathieu-Philippe Aubert, Philippe Marchand, Marwan Abboud, Steven G. Arless, Richard Gallo, Marc Dubuc, Sean Carroll, Dan Wittenberger, John W. Lehmann
  • Patent number: 6546935
    Abstract: A method for transmural ablation using an instrument containing two electrodes or cryogenic probes. A clamping force is exerted on the two electrodes or probes such that the tissue of the hollow organ is clamped therebetween. Bipolar RF energy is then applied between the two electrodes, or the probes are cryogenically cooled, thus ablating the tissue therebetween. A monitoring device measures a suitable parameter, such as impedance or temperature, and indicates when the tissue between the electrodes has been fully ablated.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 15, 2003
    Assignee: AtriCure, Inc.
    Inventor: Michael D. Hooven
  • Patent number: 6527767
    Abstract: A medical device, and related method, use epicardial ablators and detectors for intraoperative epicardial approaches to ablation therapy of cardiac conduction pathways. An epicardial gripper is sized to grasp the cardiac circumference or smaller structures on the epicardial surface of the heart. Ablators are disposed on the arms of the gripper for epicardial ablation of cardiac conduction tissue. In another embodiment of the invention, an electrode system includes a flexible, adjustable probe forming a loop for epicardial ablation. Ablators are provided on one or multiple surfaces of the probe for epicardial ablation of cardiac conduction tissue. In yet another embodiment of the invention, an endocardial ablator detection system provides an indicator adjacent an ablator on an endocardial catheter, and a detector on an epicardial probe.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: March 4, 2003
    Assignee: New England Medical Center
    Inventors: Paul J. Wang, Hassan Rastegar
  • Patent number: 6527768
    Abstract: A microwave ablation instrument including a transmission line having a first conductor and a second conductor suitable for the transmission of microwave energy. A horn antenna device is mounted to the end of the transmission line, and include an outer conductor and an inner conductor. The outer conductor of the horn antenna is electrically coupled to the second conductor of the transmission line, and includes a peripherally extending interior wall flaring outwardly to define a recess therein. The inner conductor of the horn antenna is electrically coupled to the first conductor of the transmission line and terminates in the outer conductor recess. The inner conductor and the outer conductor cooperate to emit an electromagnetic field sufficiently strong to cause tissue ablation in a direction generally away from the flared interior wall of the outer conductor.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: March 4, 2003
    Assignee: AFx Inc.
    Inventor: Dany Berube
  • Patent number: 6527700
    Abstract: An apparatus for managing the physiological and/or psychological state of an individual comprising a source of biophilic images; a device for sensing at least one physiological parameter of an individual; and a display, linked to said source and said device, for displaying biophilic images from said source as a function of the sensed physiological parameter in order to manage a physiological or psychological state of the individual.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: March 4, 2003
    Inventors: Joseph A. Manico, Tomasz A. Matraszek, Girish V. Prabhu
  • Patent number: 6520905
    Abstract: A method of classifying an individual's personal preference for an image, comprising: viewing an image for a period of time; and ranking the image on a scale extending between a “detached” feeling and an “attached” feeling, where “detached” is a feeling of not being able to personally connect to the object or situation depicted in the image, and “attached” is a feeling of a personal connection to the object or situation depicted in their image.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: February 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: Swatee N. Surve, Girish V. Prabhu, Elena A. Fedorovskaya, David L. Patton, John R. Fredlund, Cecelia M. Horwitz, Jose M. Mir
  • Patent number: 6520959
    Abstract: This invention concerns a lateral-irradiation type laser irradiation device which is capable of effectively irradiating a target site, particularly at a considerable deth, with a laser beam while infallibly and easily preventing normal tissue from injury/and a method for curing prostate gland by the use of the laser irradiation device. The laser irradiating device 1 moves either or both of the laser probes 3, 4 having the reflecting mirrors 32, 42 provided at the distal end parts of the optical fibers 31, 41 in the longitudinal direction of the sheath 2 so as to alter the interval between the reflecting mirrors 32, 42 and move the position at which the reflected laser beams are concentrated (condensed), namely the target position 5 moves, in the direction perpendicular to the longitudinal axis of the sheath 2.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 18, 2003
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Shigenobu Iwahashi, Shigeki Ariura, Shin Maki
  • Patent number: 6520185
    Abstract: The present invention provides systems and methods for applying RF energy to injured tissue, particularly the peritoneum, in order to prevent harmful post-surgical adhesions. One aspect of the invention is RF energy delivery systems employing trocars, which are designed for use in laparotomies and laparoscopies. Another aspect of the invention is an RF delivery system comprising a surgical sheet with one or more electrodes for delivering the RF energy to the injured tissue resulting from conventional surgical incisions into the abdominal wall. Additionally, another aspect of the invention provides methods for controlling the treatment dosage of RF heat to the injured tissue using parameters such as treatment time, change in tissue temperature, and change in tissue impedance.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: February 18, 2003
    Assignee: Ntero Surgical, Inc.
    Inventors: D. Bommi Bommannan, Michael D. Laufer
  • Patent number: 6522930
    Abstract: A tissue ablation device assembly ablates a region of tissue of a body space wall of a patient. In a tissue ablation device assembly, an ablation member is disposed on the distal end portion of an elongated body. The ablation member includes an ablation element and at least one conductor coupled to the ablation element. A porous membrane covers the ablation element and defines an inner space between the ablation element and an inner surface of the porous membrane. A pressurizable fluid passageway extends between a fluid port on the proximal end portion of the elongated body and the inner space within the porous membrane. Fluid can pass from the fluid port, through the pressurizable fluid passageway, to the inner space. The porous membrane allows a volume of pressurized fluid to pass through the porous membrane to an exterior of the ablation member so as to irrigate the ablation element.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: February 18, 2003
    Assignee: Atrionix, Inc.
    Inventors: Alan K. Schaer, Aurelio Valencia
  • Patent number: 6517536
    Abstract: A method and apparatus for transmural ablation using an instrument containing two electrodes or cryogenic probes. A clamping force is exerted on the two electrodes or probes such that the tissue of the hollow organ is clamped therebetween. Bipolar RF energy is then applied between the two electrodes, or the probes are cryogenically cooled, thus ablating the tissue therebetween. A monitoring device measures a suitable parameter, such as impedance or temperature, and indicates when the tissue between the electrodes has been fully ablated.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: February 11, 2003
    Assignee: AtriCure, Inc.
    Inventors: Michael D. Hooven, James A. Chaldekas
  • Patent number: 6514251
    Abstract: Device for delivering radio frequency (RF) energy, for example during tissue ablation procedures, comprising an electrode having a distal end associated with tissue puncturing means and a proximal end connectable to a radio frequency energy source, wetting means for wetting the proximity of the distal end of the electrode with a non-toxic (RF) conductive solution and cooling means for cooling at least the distal end of the electrode. The invention further relates to a process for cooling and wetting a radio frequency energy delivering device and to a guidance element therefor.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: February 4, 2003
    Assignee: K.U. Leuven Research & Development
    Inventors: Yicheng Ni, Yi Miao, Guy Marchal
  • Patent number: 6510854
    Abstract: A surgical technique for treating bladder outflow obstruction is disclosed in which access is gained to the treatment site via the bladder itself through one or more suprapubic conduits. The disclosed technique includes inserting at least a first conduit suprapubically into the bladder, inserting at least a surgical instrument along the first conduit, distending the bladder with an isotonic fluid, viewing the position of the instrument using remote visualisation means, direct visualisation means, or a combination of the two, and using the surgical instrument to create at least one hole in the prostate gland, thereby to debulk the adenoma. Preferably the procedure is performed using electrosurgery, which offers significant advantages in terms of minimally invasive surgery and patient recovery times in comparison to more conventional forms of surgery.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: January 28, 2003
    Assignee: Gyrus Medical Limited
    Inventor: Nigel M. Goble