Patents Examined by David M. Shay
  • Patent number: 6846310
    Abstract: An ophthalmological laser surgery system having a laser, associated elements for delivering an optical beam from the laser to a patient eye location, a control unit for controlling the operation of the system and a system input/output device, is enabled by a patient data card. The data card originally contains both patient background and system control information, which is transferred to the control unit via the input/output device. During system operation, newly generated information, such as laser beam power, is stored in the data card to provide an independent record of the surgical procedure actually performed. After one use, the data card is invalidated to prevent further use.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: January 25, 2005
    Assignee: VISX Incorporated
    Inventors: Alan R. McMillen, Terrance N. Clapham, Charles R. Munnerlyn
  • Patent number: 6843787
    Abstract: A process and system for addressing presbyopia of an eye is disclosed and features the resecting of an eye to expose a corneal stroma and system and method for determining an eye sculpturing center point found in a nasal-superior region of the eye. Sculpturing through use of an ablation laser is then carried out relative to the determined eye sculpturing centerpoint which sculpturing includes leaving a central optic zone unable relative to the presbyopic corrective process. Following sculpturing the resected portion of the eye is returned to cover over the sculptured region. The sculpturing profile is also formed with ablation control to define an advantageous (e.g., aspherical) ablation profile in the stroma.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: January 18, 2005
    Inventor: Luis Antonio Ruiz
  • Patent number: 6840933
    Abstract: A method for detecting and treating diseases of a type associated with the growth of new blood vessels (neovascularization) in choroidal or subretinal layers of the eye and which can be used for more accurately locating a feeder vessel to the neovascularization and for blocking such a feeder vessel by photocoagulation with a laser.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: January 11, 2005
    Assignee: Cantos United Corp.
    Inventors: Kian Tiong Pang, Joshua Ben-Nun
  • Patent number: 6830568
    Abstract: A guiding catheter system for delivering an elongated therapeutic or diagnostic device into a patient's left ventricle which includes a first guiding catheter with a shaped distal extremity configured to be aligned with or parallel to a longitudinal axis or long dimension of the patient's left ventricle and a second guiding catheter slidably and rotatably disposed within an inner lumen of the first guiding catheter which has a shaped distal shaft section and an inner lumen configured to slidably receive an elongated therapeutic or diagnostic device such as a tissue ablation device, e.g. an optical fiber connected to a laser source, an ultrasonic energy emitting device or a radio frequency energy emitting device. The shaped distal section of the first guiding catheter is shaped or is shapable within the patient's heart chamber.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: December 14, 2004
    Inventors: Randy J. Kesten, Manuel A. Javier, Jr.
  • Patent number: 6830580
    Abstract: The present invention provides a system and method for improved biostimulative effect through the use of single mode fibers to transport coherent light to a treatment site. Single mode fibers or groups/bundles of single mode waveguides for the relevant irradiation wavelength are used for radiation transport. Selective leakage of the radiation from this delivery system is achieved at the desired application sites of the biostimulation by suitable means, one being evanescent wave decouplers. The result is a low intensity exposure of coherent light to tissue or organic material that is more effective than conventional biostimulative procedures. Delivery systems based on such waveguides can cover large areas due to the low transmission losses of the waveguide. The waveguide can be inserted into hydrocultures or earth to provide radiation and thus biostimulation of seeds and cuttings in situ. Coherent radiation can also improve the health, healing and fertility of animals.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: December 14, 2004
    Assignee: CeramOptec Industries, Inc.
    Inventor: Wolfgang Neuberger
  • Patent number: 6824541
    Abstract: A non Q-switched erbium laser operating on the I11/2→I13/2 transition produces laser output pulses characterized by a single spike containing approximately 90% of the energy, rather than a series of multiple spikes. The laser includes an optical gain medium with erbium being the lasing species, such as an erbium doped YAG rod. The gain medium is pumped with a flashlamp, with the voltage applied to the flashlamp and the duration of the applied voltage being carefully controlled to produce the single spike laser output. Depending upon the operating conditions, the full width half maximum (FWHM) of the spikes can be varied between 0.1 and 10 microseconds. The output of the erbium has fewer than 10 transverse modes. Output from the erbium laser may be directed onto corneal tissue in a preferred corneal sculpting procedure, in which the ablation rate is limited to no more than about 3 microns per laser pulse.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 30, 2004
    Assignee: Lares Research
    Inventors: Dmitri Boutoussov, Colette Cozean
  • Patent number: 6817998
    Abstract: A method and system for laser surgery produces controlled laser pulses and simultaneously verifies that a correct sequence of pulses are being delivered to the patient. A photo detector receives a predetermined portion of the energy of the treatment pulses as they exit the system. A separate monitoring computer compares an output signal from the photo detector with reference information for the treatment sequence. The system is exemplified in an implementation in an ophthalmic laser surgery system.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: November 16, 2004
    Inventor: Leon C. LaHaye
  • Patent number: 6814729
    Abstract: A device readable medium for use in controlling a laser vision correction system includes a storage structure having stored therein a pre-programmed first, readable, corrective instruction reference that corresponds to an encoded customized corrective instruction determined by a calculation module external to the medium. The encoded customized corrective instruction is executable by a laser vision correction laser platform for correction of a refractive defect when the corrective instruction reference is properly recognized. A laser vision correction system including the device readable medium is described. A remunerative model relating to the device readable medium is disclosed.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: November 9, 2004
    Assignee: TechnoVision GmbH
    Inventors: Gerhard Youssefi, Kristian Hohla, Stefan Lang
  • Patent number: 6811564
    Abstract: This invention provides an apparatus comprising a laser diode (2) whose wavelength is modulated by an amplitude modulator (1). The laser output is collimated by a lens (3) and passed through an optical element (4) which contains two diffraction gratings spaced by a refractive element. The resulting output contains an interference pattern which can be selected and controlled to interact with chosen molecules so as to induce molecular resonance.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: November 2, 2004
    Inventor: John Scott Strachan
  • Patent number: 6805694
    Abstract: A laser system serves for corneal grafting by photodisruptive laser cutting.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: October 19, 2004
    Assignee: WaveLight Laser Technologie AG
    Inventor: Christof Donitzky
  • Patent number: 6799075
    Abstract: A catheter for emitting radiation is disclosed, comprising a catheter shaft and an x-ray unit attached to the distal end of the catheter shaft. The x-ray unit comprises an anode and a cathode coupled to an insulator to define a vacuum chamber. The cathode is preferably a field emission cathode of graphite or graphite coated with titanium carbide, for example. The anode is preferably tungsten and the insulator is preferably pyrolytic boron nitride. The x-ray unit is preferably coupled to a voltage source through a coaxial cable. The anode is preferably a heavy metal such as tungsten. The cathode may also be a ferroelectric material. The x-ray unit can have a diameter less than about 4 mm and a length less than about 15 mm. Methods of use of the catheter are also disclosed. The catheter of the present invention can be used to irradiate the site of an angioplasty procedure to prevent restenosis. It can also be used to treat other conditions in any vessel, lumen or cavity of the body.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: September 28, 2004
    Assignee: Medtronic Ave, Inc.
    Inventors: Victor I. Chornenky, Michael R. Forman
  • Patent number: 6786896
    Abstract: A robotic apparatus has eight actuators (M0-M7) and a linkage (LINK 0-LINK 5) that actuates an end effector. Three serial macro freedoms have large ranges of motion and inertias. Four serial micro freedoms have small ranges of motion and inertias. Translation of the end effector in any direction is actuated by at least one micro joint. The apparatus can be part of a master and slave combination, providing force feedback without any explicit force sensors. The slave is controlled with an Inverse Jacobian controller, and the master with a Jacobian Transpose controller. A slave having more degrees-of-freedom (DOFs) than the master can be controlled. A removable effector unit actuates its DOFs with cables. Beating heart surgery can be accomplished by commanding the slave to move with a beating heart, and cancelling out any such motion in the motions perceived by the master.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: September 7, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Akhil Jiten Madhani, J. Kenneth Salisbury, Gunter D. Niemeyer
  • Patent number: 6786899
    Abstract: A method for tracking lateral movement of an object is disclosed employing a retro-reflective disk as a positioning reference and a simplified positioning detection to determine the position of the reference disk. The reference disk having a retro-reflective surface is affixed onto the object to be tracked. An illumination beam illuminates the reference disk from one direction and imaging optics forms a bright image spot of the reference disk with the backward scattering from the reference disk. A two-dimensional positioning detector detects the position of the bright image spot and an electronic circuit then generates positioning signals of the object for tracking applications. The bright image spot of the reference disk enables the use of single element two-dimensional positioning detector and thus enable fast detection (>1 kHz) of the object's position. An embodiment of the method on an eye-tracking system is described.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: September 7, 2004
    Inventor: Ming Lai
  • Patent number: 6773430
    Abstract: Improved systems, devices, and methods are provided for verifying the scanning motion or adjustment of a laser beam. The system can advantageously be used in laser eye surgery where accurate control of the laser beam is crucial for patient safety and successful vision correction. In one embodiment, a laser system is provided for sculpting a portion of the eye. The system includes a laser for generating a laser beam suitable for ablation of a portion of the eye. A laser beam adjustment mechanism is optically coupled to the laser beam from the laser. The adjustment mechanism scans or adjusts the laser beam in accordance with a predetermined ablation pattern of the laser beam on the eye. An energy motion sensor optically coupled to the laser beam downstream from the adjustment mechanism is provided to verify adjustment of the laser beam in accordance with the ablation pattern. Typically, the energy motion sensor has a mask arranged to block varying portions of the laser beam in response to laser beam adjustment.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: August 10, 2004
    Assignee: Visx, Inc.
    Inventor: Richard A. Hofer
  • Patent number: 6761713
    Abstract: The medical laser unit (1) includes at least one laser body (3) being made of laser material (4). A first type of a pump light source (11) is designed and arranged to continuously excite the laser material (4) and to generate continuous laser radiation (7). A second type of a pump light source (16) is designed and arranged to excite the laser material (4) by pulses and to generate pulsed laser radiation (7). A transmitting unit is designed and arranged to transmit the continuous laser radiation (7) and the pulsed laser radiation (7) to a surgical application site. More particularly, the medical laser unit (1) has two modes of operation, a first mode for cutting with continuous laser radiation (7) and a second mode for fragmenting with pulsed laser radiation (7) of short time and high power laser pulses.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: July 13, 2004
    Assignee: Lisa Laser Products OHG Fuhrberg & Teichmann
    Inventor: Heinrich-Otto Teichmann
  • Patent number: 6755818
    Abstract: An ophthalmological surgery system and method for performing ablative photodecomposition of the corneal surface by offset image scanning. The image of a variable aperture, such as a variable width slit and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed with a movable image offset displacement mechanism capable of effecting radial displacement and angular rotation of the profiled beam exiting from the variable aperture. The profiled beam is rotated by rotating the aperture in conjunction with the offset displacement mechanism. The invention enables wide area treatment with a laser having a narrower beam, and can be used in the treatment of many different conditions, such as hyperopia, hyperopic astigmatism, irregular refractive aberrations, post ablation smoothing and phototherapeutic keratectomy.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: June 29, 2004
    Assignee: VISX, Incorporated
    Inventors: John K. Shimmick, William B. Telfair, Charles R. Munnerlyn, Herrmann J. Glockler
  • Patent number: 6755821
    Abstract: Shock-waves are applied using a combination lithotripsy probe/balloon system, comprising a needle and cannular balloon which can be inserted through the skin at a point between the ribs into the cavity beneath the chest wall and overlying the heart. Alternatively, the shock-wave can be administered extracorporally or via a catheter. A fluid injector is connected to the balloon, allowing it to be inflated with saline or other appropriate fluid to fill the space (for transmission of shock waves and/or to displace tissue—such as lung) and contact the surface of the heart. A shock-wave (acoustic) generator is used to generate shock-waves through the lithotripsy probe, through the fluid and into the myocardial tissue. The fluid provides a uniform medium for transmission of the acoustic energy, allowing precise focus and direction of the shock-wave to induce repeatable cavitation events, producing small fissures which are created by the cavitation bubbles.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: June 29, 2004
    Assignee: Cardiocavitational Systems, Inc.
    Inventor: Stephen M. Fry
  • Patent number: 6733490
    Abstract: A method of monitoring and controlling the sub-threshold laser treatment of a patient's retina. Sensors are located on a patient to measure focal electroretinograms (FERG). A stimulating beam is delivered onto the patient's retina. A pre-treatment FERG signal is collected. Treatment FERG signals are collected while treating the retina with a sub-threshold laser treatment. A difference is determined between the pre-treatment and treatment FERG signals. The difference is used to control the termination of the treatment.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: May 11, 2004
    Assignee: Iridex Corporation
    Inventors: Benedetto Falsini, Giorgio Dorin
  • Patent number: 6726680
    Abstract: A method, apparatus and system for template-controlled, precision laser interventions is described that greatly improves interventions such as laser microsurgery, particularly ophthalmic surgery, and industrial micromachining. The instrument and system are applicable to those specialties wherein the positioning accuracy of laser lesions is critical, such as whenever precise operations on a target or series of targets subject to movement during the procedure are to be effected. The system includes a user interface, wherein the user can either draw, adjust, or designate particular template patterns overlaid on a live video images of the target (such as the cornea) which are stabilized and produce an apparently stationary display of the target and provide the means for converting the template pattern into a sequence of automatic motion instructions to direct a laser beam to be sequentially applied replicating the designated template pattern into the corresponding surgical or industrial site.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: April 27, 2004
    Assignee: Visx, Incorporated
    Inventors: Carl F. Knopp, William D. Fountain, Jerzy Orkiszewski, Michael Persiantsev, H. Alfred Sklar, Jan Wysopal
  • Patent number: 6719753
    Abstract: A method and structure for energizing a flash lamp for producing a high energy light pulse, with the flash lamp energized by a flattened and extended current pulse. The method includes collecting and storing energy for delivery to the flash lamp when triggered. A triggering of the flash lamp resulting in a delivering of the collected and stored energy to the flash lamp in the form of an amplitude controlled (flattened) and duration controlled (extended) current pulse.
    Type: Grant
    Filed: June 22, 2002
    Date of Patent: April 13, 2004
    Inventors: Howard Stephen Bertan, Kenneth Lawrence Short