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Gorek
Josef Gorek, Oakland, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090054804 | Neurophysiologic monitoring system - The present invention relates to a system and methods generally aimed at surgery. More particularly, the present invention is directed at a system and related methods for performing surgical procedures and assessments involving the use of neurophysiology. | 02-26-2009 |
| 20100036384 | Surgical Trajectory Monitoring System and Related Methods - Systems and methods for determining a desired trajectory and/or monitoring the trajectory of surgical instruments and/or implants in any number of surgical procedures, such as (but not limited to) spinal surgery, including (but not limited to) ensuring proper placement of pedicle screws during pedicle fixation procedures and ensuring proper trajectory during the establishment of an operative corridor to a spinal target site. | 02-11-2010 |
Josef Gorek, Leesburg, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20080262318 | MINIMALLY OPEN INTERBODY ACCESS RETRACTION DEVICE AND SURGICAL METHOD - Devices, systems and methods for minimally open orthopedic spine surgery are disclosed. A first flexible screw-based retractor is designed to be coupled to each pedicle screw inserted into adjacent vertebral bodies. A retractor system is provided in which a first retractor blade is mounted to one of the screws and a second movable retractor blade is moved away from the first blade, in a medial direction, to create a working channel through which the disc space may be accessed for passing instruments and implants. Light may be incorporated into the device to illuminate the surgical field. One or all of the retractor blades may be made of a sterilizable plastic or metal and be disposable or reusable. | 10-23-2008 |
Josef E. Gorek, Ross, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100076446 | Gravity Dependent Pedicle Screw Tap Hole Guide and Data Processing Device - A gravity dependent pedicle screw tap hole guide comprises a guide shaft maintainable parallel to a drill bit during the drilling of a pedicle screw tap hole; an accelerometer associated with a reference direction and responsive to gravity to determine an angular difference between an acting direction of gravity and the reference direction; and a mounting attaching the accelerometer to the shaft and establishing a positional relationship between the reference direction and the longitudinal axis. The accelerometer is preferably in communication with a data processing device or system, which data processing device is able to use signals from the accelerometer to perform one or more actions, such as, for example, displaying the angular difference. | 03-25-2010 |
Matthias Gorek, Hannover DE
| Patent application number | Description | Published |
|---|---|---|
| 20080297161 | Method and Apparatus for Determining Formation Boundary Near the Bit for Conductive Mud - A method and apparatus for determining a parameter of interest of an earth formation during drilling of a borehole. A first toroidal coil antenna induces a current along a path that includes a bottomhole assembly and the formation. A second toroidal coil antenna disposed at the drillbit and oriented at a non-zero angle to the longitudinal axis of the bottomhole assembly measures an electrical signal resulting from the current, the electrical signal being a parameter of interest of the formations. | 12-04-2008 |
| 20100019772 | CONCENTRIC BUTTONS OF DIFFERENT SIZES FOR IMAGING AND STANDOFF CORRECTION - A method of estimating standoff in a borehole through an earth formation, includes: disposing a sensor including a plurality of return electrodes and at least one transmitter electrode disposed in a concentric arrangement into the borehole; injecting current, I, into the formation by applying at least two frequencies of alternating current (AC) voltage between at least two of the electrodes; measuring impedance, Z, for each of the frequencies; and using a predetermined relationship between impedance, Z, and standoff, estimating the standoff. A system and a computer program product are provided. | 01-28-2010 |
| 20100123461 | OSCILLATOR SENSOR FOR DETERMINING A PROPERTY OF AN EARTH FORMATION - An apparatus for evaluating an earth formation, the apparatus including: a logging tool configured to be conveyed through a borehole penetrating the earth formation; a coil inductively coupled to the earth formation, the coil being disposed at the logging instrument; and a circuit coupled to the coil wherein the circuit and the coil form an oscillator circuit, the oscillator circuit being configured to oscillate when a circuit parameter of the oscillator circuit satisfies an oscillation criterion, the circuit parameter being related to a property of the earth formation. | 05-20-2010 |
| 20110156708 | CONCENTRIC BUTTONS OF DIFFERENT SIZES FOR IMAGING AND STANDOFF CORRECTION - Disclosed is a method of estimating a property of an earth formation penetrated by a borehole. The method includes: disposing into the borehole a sensor having a plurality of return electrodes and at least one transmitter electrode disposed in a concentric arrangement; injecting a first current of a first frequency into the formation by applying an alternating current voltage between first selected ones of the plurality of return electrodes and the at least one transmitter electrode; injecting a second current of a second frequency into the formation by applying an alternating current voltage between second selected ones of the plurality of return electrodes and the at least one transmitter electrode; measuring effective impedance for each of the currents; and estimating the property using the measurements of the effective impedance for each of the currents; wherein the estimating compensates for an influence of standoff distances of the sensor on the measurements | 06-30-2011 |
Matthias Gorek, Hanover DE
| Patent application number | Description | Published |
|---|---|---|
| 20100007349 | METHOD AND APPARATUS FOR FOCUSING IN RESISTIVITY MEASUREMENT TOOLS USING INDEPENDENT ELECTRICAL SOURCES - A system for measuring a resistivity parameter of an earth formation includes: at least one measurement electrode electrically connected to a first electrical source; at least one guard electrode; a shielding electrode interposed between the at least one guard electrode and the at least one measurement electrode, the shielding electrode being electrically connected to a second electrical source independent from the first electrical source, and the guard electrode being electrically connected to a third electrical source independent of the first and second electrical sources; at least one return electrode; insulators positioned between (i) the measurement electrode and the shielding electrode, (ii) the shielding electrode and the guard electrode and (iii) the measurement electrode, the guard electrode and the return electrode; and a processor configured to adjust at least one of the first electrical source and the second electrical source to minimize a current flow through the shielding electrode. | 01-14-2010 |