Patents Examined by David M. Ruddy
  • Patent number: 6324414
    Abstract: A monitoring system includes a lead having a terminal covered by a removable sheath. In one embodiment, the lead has a first end coupled to an implantable electrode and a second end which includes a terminal for coupling to a mating terminal. The sheath prevents bodily fluids from contacting the terminal as the lead is tunneled under a patient's scalp. After the terminal exits the scalp, the sheath is removed from the terminal to allow its connection to the mating terminal.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: November 27, 2001
    Assignee: Depuy Orthopaedics, Inc.
    Inventors: Paul Gibbons, Timothy Beardsley, Terrence Young
  • Patent number: 6321103
    Abstract: A fetal electrode sleeve and wire interconnect system for transmitting signals indicative of fetal heart rate from a fetus inside a mother through a cable to a monitor external to the mother. The system includes a holder having a fetal spiral electrode on one end and a maternal reference electrode on its opposite end. A safety cap has a retention groove, a grip, a tip with a recessed end opposite the grip, and a conductive sleeve. The conductive sleeve has a first end enclosed by the grip, a second end enclosed by the tip, and an intermediate exposed portion enclosed by neither the grip nor the tip.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 20, 2001
    Assignee: The Ludlow Company LP
    Inventors: Edward Dowd, Robert J. Graumann, Brian E. Haug, James F. McIntire, Joseph T. O'Neill
  • Patent number: 6319251
    Abstract: A medical device for treating intravascular restenosis of a patient, the medical device comprising a catheter shaft and an inner catheter, the inner catheter having a deployable wire assembly arrangement, wherein the deployable wire assembly arrangement comprises a plurality of preshaped expandable metallic basket members at the distal end of the inner catheter adapted to contact a pre-implanted stent and to apply RF current to the tissues for therapeutic purposes through a wire guide shaft. Alternately, a plurality of expandable metallic basket members are secured to the distal section of the catheter shaft for contacting a pre-implanted stent of the patient through a wire guide shaft.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: November 20, 2001
    Inventors: Hosheng Tu, Steve Chun-Guang Tu
  • Patent number: 6321102
    Abstract: A lead assembly adapted for endocardial fixation to a human heart is provided. The lead assembly includes a lead body that has a proximal end provided with a connector for electrical connection to a cardiac stimulator. The cardiac stimulator may be a pacemaker, a cardioverter/defibrillator, or a sensing instrument. The distal end of the lead body is connected to a tubular electrode housing. The lead body consists of one or more noncoiled conductor cables surrounded by a coextensive insulating sleeve. Each conductor cable consists of a conducting element covered by a coextensive insulating sleeve. The conducting element may be a single filament wire or a plurality of individual conductor wires. In contrast to conventional leads, the lead body of the present invention does not require coiled conductor wires. Lead body diameters of 1.04 mm or smaller are possible.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: November 20, 2001
    Assignee: Intermedics Inc.
    Inventors: Paul R. Spehr, Elmar R. Fischer, Sr., James E. Machek
  • Patent number: 6317615
    Abstract: A first electrode is positioned within an artery proximate an implanted intravascular stent. A second electrode is positioned at a separate location relative the position of the first electrode. Electrical energy is then delivered between the first and the second electrodes to produce an electrical field adjacent the implanted intravascular stent. When a intravascular stent is implanted in a coronary artery, the delivery of the electrical energy is coordinated to cardiac cycles detected in sensed cardiac signals, where the delivery of the electrical energy between the first electrode and the second electrode occurs during a predetermined portion of the cardiac cycle.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: November 13, 2001
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Bruce H. KenKnight, Jay A. Warren, Stephen John Hahn
  • Patent number: 6309384
    Abstract: Methods and devices for occlusion of the fallopian tubes of a women. The method involves thermally damaging the lining of the utero-tubal junction with relatively low power, followed by placement of a reticulated foam plug. In one embodiment, vascularized tissue grows into the plug and prevents or discourages formation of scar tissue around the plug. Another embodiment with a relatively small foam pore size encourages formation of a vascularized capsule around the plug. The presence of this vascularized capsule limits the patient's foreign body response, so that the capsule does not constrict around the plug. Also presented is a catheter designed for wounding the epithelial layer of the utero-tubal junction, and a method of using the catheter to form a long yet shallow lesion in the utero-tubal junction.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: October 30, 2001
    Assignee: Adiana, Inc.
    Inventors: Douglas C. Harrington, Victoria E. Carr-Brendel, Brett S. Bowman
  • Patent number: 6309388
    Abstract: The present invention goes to a tissue electrocautery device that accommodates anatomical structures lying at more than one longitudinal axes. Such a circumstance is encountered when attempting to perform symmetric tissue electrocautery of an endocervical canal where the longitudinal axis of the vaginal vault is at an angle to the longitudinal axis of the endocervical canal. The device of the present invention uses a hollow housing, elongate along a first longitudinal axis, having a proximal portion with a proximal end and a distal end, and includes a distal portion from the distal end. The distal portion is elongate along a second longitudinal axis and pivotable in relation to the proximal portion at a selectable angle to the first longitudinal axis.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: October 30, 2001
    Assignee: Mayo Foundation for Medical Education and Research
    Inventor: Robert Stuart Fowler
  • Patent number: 6309386
    Abstract: It is an object of the present invention to provide a multi-channel radio frequency (RF) power delivery and control system for applying energy to multiple electrodes of an RF tissue heating device. In a first embodiment of the invention an apparatus for controlling electrical cross-talk in an electro-surgical instrument is disclosed. The apparatus includes: a driver, a first electrode, a second electrode, a ground for delivery of power to a surgical site, a power measurement circuit and a waveform generator. The power measurement circuit computes differences between a target power and an actual power delivered to the first electrode and the second electrode to establish an amount by which to increase and to decrease the power emanating from the first electrode and the second electrode.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: October 30, 2001
    Assignee: Somnus Medical Technologies, Inc.
    Inventor: Robin B. Bek
  • Patent number: 6308090
    Abstract: A catheter-based method for coronary sinus mapping, pacing, and ablation, wherein a distal tip portion having longitudinally stretchable/compressible capability is pre-shaped to snugly fit into the coronary sinus with resilience and trauma-free manner, so that the distal tip portion is positioned in the sinus; the distal tip portion is deflected to expose a plurality of electrodes; and RF energy is then applied to the coronary sinus tissue through the electrodes to cause pacing, mapping, and/or ablation.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: October 23, 2001
    Assignee: Irvine Biomedical, Inc.
    Inventors: Hosheng Tu, Alan de la Rama
  • Patent number: 6302881
    Abstract: During the treatment of biological tissues by high-frequency surgery, contaminants, in particular smoke, are produced. In the present invention a suction device for removal of the contaminants is controlled in such a way that it becomes active only when a voltage sufficient to ignite an arc exists at an applicator of the HF-surgery device, and/or an arc is burning between the applicator and the treatment region, and/or the treatment region reaches a temperature at which smoke can be produced.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: October 16, 2001
    Assignee: Erbe Elektromedizin GmbH
    Inventor: Günter Farin
  • Patent number: 6295463
    Abstract: A skin protection mount protects the skin surface of a subject from damage that can result from repeated attachment and detachment of transcutaneous sensors connected to the skin of a subject with adhesive. The skin protection mount preferably has a thickness of five mils or less, to provide increased flexibility and increase subject comfort. Preferably, the skin protection mount has adhesive on the side attached to the subject, and lacks adhesive on the opposite side in order to facilitate attachment to and detachment from a skin protection mount of a transcutaneous sensor having an adhesive zing with an adhesion surface. In a preferred embodiment, the mounting surface of the skin protection mount has a surface area larger than the adhesion surface to protect the subject's skin from the adhesion surface. The adhesive force between the skin protection mount and the patient is greater than the adhesive force between the skin protection mount and the adhesion surface of the adhesive ring.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: September 25, 2001
    Assignee: Sensormedics Corporation
    Inventor: Alex Stenzler
  • Patent number: 6290695
    Abstract: A process and device for shaping surfaces by laser machining and which are used for photorefractive keratectomy and shaping contact lenses. The shaping is performed in stages so that after any interruption in the process, a complete partial correction of the entire surface is obtained. A computing unit receives data from input units and directs data to a block generator which associates laser machining coordinates to enable the removal of individual surface layers. A sequence generator gathers the data generated by the block generator into blocks which correspond to an individual ablation areas, and orders the blocks into sequences. A block sequence transmitted by the sequence generator acts upon a laser beam deflector and beam shaping unit such that the complete partial correction of the surface is obtained for each block sequence. A central processor coordinates control of the laser, the beam shaping unit and the laser beam deflector.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: September 18, 2001
    Assignee: Aesculap Meditech GmbH
    Inventors: Jürgen Kuhnert, Holger Mäusezahl, Stefan Pieger, Eckhard Schroeder
  • Patent number: 6292679
    Abstract: A body electrode and connector for a fetal electrode has an electrically insulated substrate with an electrical contact strip on the lower surface and two electrical contact strips on the upper surface. An electrically conductive hydrogel layer extends beneath the lower contact strip and adheres to the mother's skin and makes electrical contact with the lower strip, forming a body electrode. Two parallel, but non-engaging, regions of electrically conductive adhesive are disposed over the two upper surface contact strips. The adhesive regions are, in turn, covered by resilient foam strips. Prior to use, the front portions of the electrically conductive adhesive regions are kept from adhesive engagement with the foam strips by removable release liners. The device is deployed by removing a hydrogel-covering release liner and attaching the device to the inner thigh or lower abdomen of the mother.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: September 18, 2001
    Inventor: Leonard T. Sheard
  • Patent number: 6285898
    Abstract: A method of constructing a cardiac map of a heart having a heart cycle including; bringing an invasive probe into contact with a location on a wall of the heart; determining, at at least two different phases of the heart cycle, a position of the invasive probe; and determining a local non-electrical physiological value at the location. The method is repeated for a plurality of locations in the heart The positions are combined to form a time-dependent map of at least a portion of the heart and local relationships between changes in positions of the invasive probe and determined local non-electrical physiological values are determined. Preferably, local electrical activity at the plurality of locations is also acquired.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: September 4, 2001
    Assignee: Biosense, Inc.
    Inventor: Shlomo Ben-Haim
  • Patent number: 6283959
    Abstract: A catheter is attached to an elongated catheter body adapted for endovascular insertion with a balloon assembly at its distal end. Coolant injected through the catheter body may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. A valve may regulate back pressure in the return passage to coordinate the flow of coolant into and out of the balloon so as to both inflate the balloon and achieve cryogenic cooling at the surface of the balloon. The coolant is biologically safe, and may be liquid carbon dioxide. Plural balloons may be provided adjacent the cooling segment, and one balloon may be shaped to treat the ostium of a vessel.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: September 4, 2001
    Assignee: CyroCath Technologies, Inc.
    Inventors: Jean Pierre Lalonde, Robert Martin, Claudia Lueckge, Leonilda Capuano, John W. Lehmann, Daniel Nahon
  • Patent number: 6283962
    Abstract: A medical ablation device system for treating endometrosis, gingivae, valvular annulus, or reducing the mass of cellular tissues, wherein an elongate tubular element comprises an electrode disposed at its distal section that is extendible from an opening at one side of the tubular element, the energy generator, and means for generating rotational sweeping force at the distal section of the tubular element to effect the heat treatment and the rotational sweeping massage therapy for target tissues.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: September 4, 2001
    Assignee: Quantum Therapeutics Corp.
    Inventors: Hosheng Tu, Steve Chun-Guang Tu
  • Patent number: 6280440
    Abstract: The invention provides a cautery apparatus, which includes a cautery probe provided at the tip of a sheath that can be inserted into, for example, a treatment-tool channel of an endoscope, and also includes a liquid-supply pump to be connected to the sheath for supplying a liquid through nozzles formed in the cautery probe. The cautery apparatus comprises a pump driving motor provided in its main body, a pump unit containing the liquid-supply pump, an attaching device for detachably attaching the liquid-supply pump unit to the main body, and a coupling mechanism. The coupling mechanism couples the driving shaft of the liquid-supply pump to the driving shaft of the pump driving device to attach the liquid-supply pump unit to the main body, and separates the driving and driving shafts from each other to detach the liquid-supply pump unit from the main body.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: August 28, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Masanori Gocho
  • Patent number: 6277115
    Abstract: An apparatus, system, and method for treating body tissue includes an electrode assembly having a first electrode and a second electrode, with at least the first electrode formed of porous conductive material, such as porous metal. Conductive fluid is delivered to the operating site through the porous metal of the first electrode via a fluid supply conduit. The apparatus may also include a fluid withdrawal conduit. The second electrode may also be formed of porous metal, and may serve as the intake opening for the fluid withdrawal conduit. The electrode assembly may be positioned on a catheter shaft having a distal end, with the first electrode positioned on the catheter shaft distal end. In treating desired tissue at a selected operational site, the electrode assembly is introduced to the site with the first electrode positioned adjacent to the desired tissue. Conductive fluid, such as a saline solution, is delivered to the operational site via the supply conduit.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: August 21, 2001
    Assignee: Ethicon, Inc.
    Inventor: Vahid Saadat
  • Patent number: 6277113
    Abstract: An ablation catheter apparatus with a monopole antenna that is arranged to provide a relatively uniform electric field and a method for using such an ablation catheter apparatus are disclosed. According to one aspect of the present invention, an ablation catheter includes an elongated flexible tubular member that is adapted to be inserted into the body of a patient, and a transmission line that is disposed within the tubular member. The transmission line has a distal end and a proximal end which is arranged to be connected to an electromagnetic energy source. The catheter also includes a monopole antenna with tip section and a body section that includes a distal end and a proximal end. The tip section and the body section are arranged to produce a relatively uniform electric field around the monopole antenna which is sufficiently strong to cause tissue ablation. The proximal end of the body section of the monopole antenna is arranged to be electrically coupled to the transmission line.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: August 21, 2001
    Assignee: AFX, Inc.
    Inventor: Dany Berube
  • Patent number: 6264653
    Abstract: The system and methods of the invention gauge the amount or quality of the contact between body tissue and one or more electrodes supported on a catheter. In further aspects, the invention concerns methods for controlling power delivery to particular electrodes on a catheter in response to tissue contact data derived from that electrode or other electrodes during the ablation procedure. The invention monitors and processes information concerning the number of pulses of pulsed radio-frequency energy that are delivered during an ablation procedure. The amount or quality of tissue contact is gauged by comparing the number of pulses delivered to a particular electrode during the interval to either the number of pulses delivered to at least one other electrode of the plural electrodes or data derived during the ablation procedure.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: July 24, 2001
    Assignee: C. R. Band, Inc.
    Inventor: Gary S. Falwell