Patents by Inventor Stuart D Edwards

Stuart D Edwards has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5827273
    Abstract: An ablation apparatus has a balloon that is inserted into an organ of a body and ablates all or a selected portion of the inner layer of the organ. Electrolytic solution fills the balloon, and the balloon includes a plurality of apertures from which electrolytic solution flows from the balloon. The flow rate of electrolytic solution is dependent on the pressure applied to the balloon by the electrolytic solution. A conforming member, with a conductive surface and a back side, is made of a material that substantially conforms, to a shape of the inner layer of the organ and delivers the electrolytic solution and RF energy through the conductive surface to the inner layer. Advantageously, difficult to access areas are reached with the inclusion of the conforming member. Optionally positioned between the conforming member and the balloon is a porous membrane. A printed circuit is printed in or on the conforming member and delivers RF energy to selected sections of the inner layer.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: October 27, 1998
    Assignee: Stuart D. Edwards
    Inventor: Stuart D. Edwards
  • Patent number: 5827277
    Abstract: A method and apparatus for ablating at least a portion of a nasal concha. The apparatus includes a catheter having a distal portion with a dimension configured for positioning through a nostril of a patient into a nasal meatus adjacent a nasal concha, and an energy delivery device coupled to the catheter distal portion including one or more energy delivering probes extendable from the catheter distal portion a sufficient distance to be inserted into an interior of the nasal concha to deliver ablative energy therein. The distal portion of the apparatus may also include an expandable member, expansion of the expandable member within the nasal meatus immobilizing the distal portion within the nasal meatus.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: October 27, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5823197
    Abstract: A method and apparatus for ablating at least a portion of a nasal concha. The apparatus includes a catheter having a distal portion with a dimension configured for positioning through a nostril of a patient into a nasal meatus adjacent a nasal concha, and an energy delivery device coupled to the catheter distal portion including one or more energy delivering probes extendable from the catheter distal portion a sufficient distance to be inserted into an interior of the nasal concha to deliver ablative energy therein. The distal portion of the apparatus may also include an expandable member, expansion of the expandable member within the nasal meatus immobilizing the distal portion within the nasal meatus.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: October 20, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5820580
    Abstract: A method for reducing a volume of a tongue provides a source of ablation energy and an ablation energy delivery device. At least a portion of the ablation energy delivery device is positioned in an interior of the tongue. A sufficient amount of energy is delivered from the energy delivery device into the interior of the tongue to debulk a section of the tongue without damaging a hypoglossal nerve. Thereafter, the at least portion of the ablation energy delivery device is removed from the interior of the tongue.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: October 13, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventors: Stuart D. Edwards, Ronald Lax, David Douglass
  • Patent number: 5817049
    Abstract: A method for debulking the tongue provides an ablation apparatus including a source of electromagnetic energy and one or more electromagnetic energy delivery electrodes coupled to the electromagnetic energy source. At least one electrode is advanced into an interior of the tongue. Electromagnetic energy is delivered from the electrode to debulk an interior section of the tongue without damaging a hypoglossal nerve. The electrode is then retracted from the interior of the tongue.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: October 6, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5807309
    Abstract: A transurethral needle ablation device for use with the human hand for radio frequency ablation of a target volume in the tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder. The device comprises a bridge having proximal and distal extremities and having a passage therein extending from the proximal extremity to the distal extremity. A sheath having proximal and distal extremities is secured to the bridge and has a passageway therein in communication with the passage in the bridge. The sheath is sized so that it can enter the urethra and has a length so that when its distal extremity is in the vicinity of the prostate, the proximal extremity is outside the urethra.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: September 15, 1998
    Assignee: Vidamed, Inc.
    Inventors: Ingemar H. Lundquist, Stuart D. Edwards, James A. Baker, Jr., Christopher S. Jones, Phillip R. Sommer, Kee S. Lee
  • Patent number: 5807308
    Abstract: An apparatus reduces the volume of selected sections of a tongue. The apparatus includes a catheter means. An electrode means is at least partially positioned in an interior of the catheter means. The electrode means is configured to deliver sufficient electromagnetic energy to ablate an interior of the tongue without damaging a hypoglossal nerve of the tongue. An electrode advancement and retraction means is coupled to the electrode means to advance and retract at least a portion of the electrode means in and out of a selected tongue surface. A cabling means is coupled to the electrode means.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: September 15, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5800484
    Abstract: An ablation apparatus has an introducer including an introducer lumen, a proximal portion and a distal portion. A handpiece with a proximal portion and a distal portion is coupled to the introducer proximal portion. Two or more electrodes are at least partially positioned in the introducer lumen. Each electrode is configured to be advanced from the introducer distal portion in a deployed state into a selected tissue site to define a volumetric ablation volume. A fluid delivery member is positioned on at least a portion of an exterior of one of the electrodes. The fluid delivery member is configured to be coupled to a fluid medium source. A cable is coupled to the electrodes.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: September 1, 1998
    Assignee: Rita Medical Systems, Inc.
    Inventors: Edward J. Gough, Alan A. Stein, Stuart D. Edwards, Patrick J. Burns
  • Patent number: 5800379
    Abstract: A method for reducing a volume of a tongue provides an ablative agent source. The ablative agent source is coupled to an ablative agent delivery device. At least a portion of the ablative agent delivery device is advanced into an interior of the tongue. A sufficient amount of an ablative agent is delivered from the ablative agent delivery device into the interior of the tongue to debulk a section of the tongue without damaging a hypoglossal nerve. Thereafter, the ablative agent delivery device is retracted from the interior of the tongue.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: September 1, 1998
    Assignee: Sommus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5800378
    Abstract: A medical probe device comprises a catheter having a stylet guide housing with one or more stylet ports in a side wall thereof and a stylet guide for directing a flexible stylet outward through the stylet port and through intervening tissue at a preselected, adjustable angle to a target tissue. The total catheter assembly includes a stylet guide lumen communicating with the stylet port and a stylet positioned in said stylet guide lumen for longitudinal movement from the port through intervening tissue to a target tissue. The stylet can be an electrical conductor enclosed within a non-conductive layer, the electrical conductor being a radiofrequency electrode. Preferably, the non-conductive layer is a sleeve which is axially moveable on the electrical conductor to expose a selected portion of the electrical conductor surface in the target tissue. The stylet can also be a microwave antenna. The stylet can also be a hollow tube for delivering treatment fluid to the target tissue.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: September 1, 1998
    Assignee: Vidamed, Inc.
    Inventors: Stuart D. Edwards, Ronald G. Lax, Ingemar H. Lundquist, Hugh R. Sharkey
  • Patent number: 5800429
    Abstract: An apparatus is provided for ablating at least a portion of a nasal concha. By ablating at least a portion of a nasal concha, the size of the nasal concha is reduced. The three nasal concha in the body (inferior, middle and superior nasal concha) form at least a portion of the three nasal meatus (inferior, middle and superior nasal meatus) in the body. By reducing the size of a nasal concha, obstruction of a nasal meatus is reduced or eliminated. As a result, air flow through the nasal meatus is improved. In one embodiment, the apparatus includes a catheter having a distal portion with a dimension configured for positioning the catheter distal portion through a nostril of a patient into a nasal meatus adjacent a surface of a nasal concha and a means at the catheter distal portion for delivering sufficient ablative energy to the nasal concha to ablate at least a portion of the nasal concha through heating without penetrating the surface of the nasal concha with an element of the apparatus.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: September 1, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5792173
    Abstract: A wound closure, hemostasis device, such as a femoral hemostat, includes an inflatable balloon with an inflation and deflation outlet. A placement patch includes an aperture for receiving the inflation and deflation outlet. The inflatable balloon is coupled to the placement patch and positioned adjacent to a wound site or a bleeding vessel. A belt straps through the placement patch and around the patient's body or a patient's appendage and holds the placement patch at the wound site or bleeding vessel. An inflation tube is coupled to the inflation and deflation outlet. An inflation apparatus is coupled to the inflation and deflation outlet.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: August 11, 1998
    Assignee: Stuart D. Edwards
    Inventors: Richard C. Breen, Peter H. Lazarus, Stuart D. Edwards, Edward J. Gough
  • Patent number: 5769846
    Abstract: An endocardial ablation apparatus, for introduction into a heart chamber formed by a wall, is provides. The ablation apparatus includes an inflatable, flexible porous membrane adapted to receive an electrolytic solution, and become inflated to substantially conform an exterior surface of the membrane to the wall of the heart chamber. An inner lumenal member is surrounded by and attached to the membrane. The inner lumenal member includes a lumen that permits blood flow through the inner lumenal member and heart chamber. An introducer catheter introduces the membrane and inner lumenal member into a selected heart chamber. A plurality of RF electrodes define a circuit positioned in the membrane or on an exterior surface of the inner lumenal member. The RF electrodes transfer thermal energy to the electrolytic solution. The electrolytic solution is the electrode that provides ablation of a selected site of the heart chamber. An RF power source is coupled to the RF electrodes.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: June 23, 1998
    Assignee: Stuart D. Edwards
    Inventors: Stuart D. Edwards, Hugh R. Sharkey
  • Patent number: 5762626
    Abstract: A transurethral needle ablation device for the treatment of the prostate of a human male using radio frequency energy wall comprising a sheath having a lumen extending therethrough. A guide tube assembly is slidably mounted in the lumen in the sheath and having a lumen extending therethrough. A needle electrode is slidably mounted in the lumen in the guide tube assembly. An insulating sheath is disposed about the needle electrode so that the distal extremity of the needle electrode is exposed. A handle adapted to be gripped by the human hand is mounted on the proximal extremity of the sheath. Levers are carried by the handle for causing bending of the distal extremity of the guide tube assembly at an angle with respect to its longitudinal axis whereby the lumen in the guide tube assembly can be directed so that it faces the urethral wall.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: June 9, 1998
    Assignee: Vidamed, Inc.
    Inventors: Ingemar H. Lundquist, Stuart D. Edwards, Hugh R. Sharkey, Ronald G. Lax, James A. Baker, Jr., Phillip R. Sommer
  • Patent number: 5749846
    Abstract: A medical probe device comprising a catheter having a stylet guide housing with at least one stylet port in a side thereof and stylet guide means for directing a flexible stylet outward through at least one stylet port and through intervening tissue to targeted tissues. The stylet guide housing has an optical viewing means positioned for viewing the stylet and adjacent structure which includes a fiber optic channel means for receiving a fiber optic viewing device. The fiber optic channel means can include a guide port means for directing longitudinal movement of a fiber optic device with respect to the stylet guide means in a viewing zone and a flushing liquid channel in the stylet guide housing having an exit port positioned to direct flushing liquid issuing therefrom across the end of a fiber optic device when positioned in the viewing zone.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 12, 1998
    Assignee: Vidamed, Inc.
    Inventors: Stuart D. Edwards, Hugh R. Sharkey, Ingemar H. Lundquist, Ronald G. Lax, James Allen Baker, Jr.
  • Patent number: 5746224
    Abstract: A method is provided for ablating at least a portion of a nasal concha. By ablating at least a portion of a nasal concha, the size of the nasal concha is reduced. The three nasal concha in the body (inferior, middle and superior nasal concha) form at least a portion of the three nasal meatus (inferior, middle and superior nasal meatus) in the body. By reducing the size of a nasal concha, obstruction of a nasal meatus is reduced or eliminated. As a result, air flow through the nasal meatus is improved.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: May 5, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5743870
    Abstract: An ablation apparatus suitable for the ablation of soft palate tissue, including but not limited to the uvula, includes a cannula with a distal end and a proximal end and a lumen. A vacuum assisted retainer device is coupled to the cannula distal end. The vacuum retainer member includes a uvula receiving member configured to retain at least a portion of the uvula with the application of vacuum. An electromagnetic electrode is coupled to an electromagnetic energy source. A vacuum source is coupled to the uvula receiving member.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: April 28, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5743904
    Abstract: The invention provides a method and system for precision placement of ablation apparatus. An ablation catheter having a plurality of electrodes and having a radius of curvature selected responsive to a size of a patient's tongue, is placed near to the tongue and offset from a gag-response region in the throat, preferably using an optical viewing apparatus and a view port in the catheter. The ablation catheter is coupled to a baseplate and to a measuring device for indicating an offset of a selected reference point of the ablation catheter from the baseplate. The baseplate is coupled to a reference body structure, such as the jaw, lips or teeth. In cases where multiple ablation operations are conducted, the ablation catheter (or a replacement ablation catheter) is coupled to the baseplate so that the selected reference point has the same distance from the baseplate, and thus from the reference body structure.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: April 28, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards
  • Patent number: 5741225
    Abstract: A method of medical treatment of the prostate provides an ablation apparatus. The ablation apparatus includes a cannula, an electrode at least partially positioned in the cannula, and an insulation sleeve positioned in a surrounding relationship to at least a portion of the electrode. A distal end of the cannula is positioned in a rectum of a patient. The distal end of the cannula is advanced through a rectal wall of the rectum. A distal end of the electrode if advanced from the cannula into the prostate. Electromagnetic energy is delivered from the electrode to the prostate and an ablation zone is created in the prostate.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: April 21, 1998
    Assignee: Rita Medical Systems
    Inventors: Ronald G. Lax, Stuart D. Edwards, Hugh R. Sharkey
  • Patent number: 5738114
    Abstract: A method for reducing a volume of a tongue in an oral cavity provides an ablation apparatus. The ablation apparatus including a source of electromagnetic energy and one or more electromagnetic energy delivery electrodes coupled to the electromagnetic energy source. A distal end of the ablation apparatus is introduced into the oral cavity. The distal end of the ablation apparatus is positioned outside of an oral cavity gag response zone. At least one electrode is introduced into an interior of the tongue when the distal end of the ablation apparatus is positioned outside of the oral cavity gag response zone. A sufficient amount of electromagnetic energy is delivered from the electrode into the interior of the tongue to debulk a section of the tongue without damaging the hypoglossal nerve. The electrode is then removed from the interior of the tongue.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: April 14, 1998
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Stuart D. Edwards