With Means For Inserting Into A Body Patents (Class 600/423)
  • Patent number: 10307079
    Abstract: The present teaching relates to surgical procedure assistance. In one example, a first image of an organ having a lesion is obtained prior to a surgical procedure. Information related to a pose of a surgical instrument at a first location with respect to the lesion is received from a sensor coupled with the surgical instrument. A visual environment having the lesion and the surgical instrument rendered therein is generated based on the first image and the information received from the sensor. A second image of the organ is obtained when the surgical instrument is moved to a second location with respect to the lesion during the surgical procedure. The second image captures the lesion and the surgical instrument. The pose of the surgical instrument and the lesion rendered in the visual environment are adjusted based, at least in part, on the second image.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: June 4, 2019
    Assignee: EDDA TECHNOLOGY, INC.
    Inventors: Guo-Qing Wei, Xin Dou, Li Fan, Xiaolan Zeng, Jian-Zhong Qian, Cheng-Chung Liang
  • Patent number: 10278779
    Abstract: Provided herein are systems, devices, assemblies, and methods for generating exciter signals, for example, to activate a remotely located tag. The systems, devices, assemblies, and methods find use in a variety of application including medical applications for the locating of a tag in a subject.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: May 7, 2019
    Assignee: ELUCENT MEDICAL, INC.
    Inventors: Eric N. Rudie, Kassandra Klinkhammer, Jason Hiltner, Dave Costello, Stan Kluge, Lev Koyrakh, Sean Morgan, Daniel W. van der Weide
  • Patent number: 10224676
    Abstract: A shielded connection line for a magnetic resonance tomography system includes a signal conductor, a shield for the signal conductor, and a plug-in connector. The plug-in connector has a large number of connection contacts that are arranged in a two-dimensional matrix and are electrically insulated from each other in the plug-in connector. The signal conductor is in galvanic contact with a first connection contact, and three second connection contacts adjacent to the first connection contact and surrounding the first connection contact are galvanically connected to the shield.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: March 5, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Martin Hemmerlein, Wolfgang Kraus, Thomas Kundner
  • Patent number: 10198606
    Abstract: A system for operating a downhole tool includes a tag carrier; a RFID tag coupled with the tag carrier; and a control sub having a bore extending therethrough, the control sub comprising: an antenna located adjacent to the bore; and a stop for catching the tag carrier, wherein: the radio frequency identification tag is coupled with the tag carrier in relation to the stop and the antenna such that the radio frequency identification tag is aligned with the antenna when the tag carrier is caught in the stop, and the stop is operable to allow passage of the tag carrier through the stop after the tag carrier is caught by the stop.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: February 5, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: John Fielding Ownby, Jobby T. Jacob, Richard Lee Giroux, Matthew David Knight, Richard Alastair Howard Dalzell, Jake M. Boudreaux, Robert B. Marcel, Jr., Rupa Sharma, Larry A. Kendziora, Eric R. Evans, Rajesh D. Patel
  • Patent number: 9911016
    Abstract: A system for operating a downhole tool includes a tag carrier; a RFID tag coupled with the tag carrier; and a control sub having a bore extending therethrough, the control sub comprising: an antenna located adjacent to the bore; and a stop for catching the tag carrier, wherein: the radio frequency identification tag is coupled with the tag carrier in relation to the stop and the antenna such that the radio frequency identification tag is aligned with the antenna when the tag carrier is caught in the stop, and the stop is operable to allow passage of the tag carrier through the stop after the tag carrier is caught by the stop.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 6, 2018
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John Fielding Ownby, Jobby T. Jacob, Richard Lee Giroux, Matthew David Knight, Richard Alastair Howard Dalzell, Jake M. Boudreaux, Robert B. Marcel, Jr., Rupa Sharma, Larry A. Kendziora, Eric R. Evans, Rajesh D. Patel
  • Patent number: 9907980
    Abstract: Apparatus and methods for measuring radiation levels in vivo in real time. Apparatus and methods include a scintillating material coupled to a retention member.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: March 6, 2018
    Assignee: Board of Regents, The University of Texas System
    Inventors: A. Sam Beddar, Tina Marie Briere, Louis Archambault
  • Patent number: 9753106
    Abstract: A wireless radio frequency coil for magnetic resonance imaging (MRI) is provided. The wireless radio frequency coil including a wireless radio frequency coil unit configured to transmit, receive or transmit and receive a radio frequency signal; a power supply configured to provide a power voltage for operation of the wireless radio frequency coil unit; a switch connected to the power supply and the wireless radio frequency coil unit; a sensor configured to detect signals discharged from a space in which the wireless radio frequency coil unit is located; and a controller configured to provide or shut off the power voltage to the wireless radio frequency coil unit by controlling the switch according to a result obtained from the sensor.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 5, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Je Choi, Young Cheol Kwon, Jin Young Hwang
  • Patent number: 9668811
    Abstract: An elongated flexible medical device is inserted into a patient's body via a natural orifice, and advanced through the natural orifice to a location proximate innervated tissue that influences renal sympathetic nerve activity. The medical device can be advanced into a body organ and to a location within the organ proximate the innervated tissue. The organ may comprise an organ of the gastrointestinal tract or urinary tract. The medical device may be advanced through and beyond an access hole in a wall of the organ, and situated at a location proximate the innervated tissue. One or both of imaging and ablation energy is delivered from a distal end of the medical device to the innervated tissue. Innervated renal tissue can be ablated using various forms of energy, including RF energy, ultrasound energy, optical energy, and thermal energy.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 6, 2017
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: David J. Sogard, Scott Smith, Mark L. Jenson
  • Patent number: 9629595
    Abstract: Systems and methods are described herein for tracking, localization or controlling an elongate instrument or other medical instrument in an image or patient.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 25, 2017
    Assignee: Hansen Medical, Inc.
    Inventors: Sean Walker, Christopher Sewell, June Park, Prabu Ravindran, Aditya Koolwal, Dave Camarillo, Federico Barbagli
  • Patent number: 9554726
    Abstract: A hyperpolarized liquid contrast agent is for use in a MRT device. The liquid contrast agent passes through a conduit of a MW resonator in the magnetic field of the MRT device. A microwave with a frequency of at least 40 GHz couples into the MW resonator for polarizing the liquid contrast agent upon passage through the conduit in the MW resonator using DNP. The contrast agent is polarized in a continuous passage in the MW resonator and administered immediately. A MW mode is formed in the MW resonator which has an antinode in the magnetic field strength and a node in the electric field strength. The power of the introduced microwave and coupling of the microwave into the resonator are adjusted such that in the area of the line, an amplitude of the MW magnetic field strength B 1 ? 1.5 · 10 - 2 ? Ts ? 1 T 1 , e results, wherein T1,e is the relaxation time of the DNP-active electrons.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 31, 2017
    Assignee: Johann Wolfgang Goethe-Universität Frankfurt am Main
    Inventors: Jan Krummenacker, Thomas Prisner, Vasyl Denysenkov, Laura Schreiber, Kerstin Münnemann
  • Patent number: 9486158
    Abstract: Active MRI compatible interventional devices, such as catheters, include at least one RF antenna so that they are visible under MRI analysis. However, metallic structures within intravascular devices may heat up significantly during interventional MRI procedures due to eddy current formation over the conductive transmission lines. The electrical field coupling that occurs between interventional devices and RF signals depend on the position and orientation of interventional device within the bore and the insertion length of the interventional device. The system detects an induced current signal during RF transmission phase and selectively adjusts the impedance value associated with the interventional device by using a varactor and integrated circuit components in such a manner that the currents induced in the interventional device are below a threshold current level, thereby controlling current levels and heating in the interventional device.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 8, 2016
    Assignee: The United States of America, as Represented by the Secretary, Department of Health and Human Services
    Inventor: Ozgur Kocaturk
  • Patent number: 9480413
    Abstract: A system for determining the spatial distribution of magnetic particles in an examination area. Magnetic field generator generates a spatially inhomogeneous gradient magnetic field with at least one region with a low field strength in which the magnetization of the particles is in a state of non-saturation, whereas they are in a state of saturation in the remaining region. By an arrangement to shift the area with a low field strength within the examination area, a change in the magnetization of the magnetic particles is brought about which can be detected from outside by a detector. At least one of the magnetic field generator, the arrangement and the detector are arranged at least partially on a medical instrument.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: November 1, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Bernhard Gleich, Juergen Weizenecker, Nielsen Tim
  • Patent number: 9404984
    Abstract: A method for hyperpolarizing nuclei contained in an MR (=magnetic resonance) agent using Brute Force, has the steps of a) providing a sample (1), including the MR agent, optionally dissolved in a solvent, and a relaxation agent (2); and b) exposing the sample (1) to a magnetic field B0, with B0?0.5 T, and a cryogenic temperature Tcr, with Tcr?5K. The method is characterized in that the relaxation agent (2) is a particulate relaxation agent (2) having particles of a grain size of 20 ?m or less, with a volume content of these particles of at least 1% within the sample. An improved Brute Force hyperpolarization method is thereby provided, which is broadly applicable and simple to perform.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 2, 2016
    Assignee: Bruker UK Limited
    Inventors: John Robert Owers-Bradley, David Geoffrey Gadian, Anthony John Horsewill
  • Patent number: 9329118
    Abstract: An environmental chamber includes a testing tub in which a testing space is formed. The testing tub has a front wall, a left sidewall, a right sidewall, a rear wall, and a ceiling part, and is divided into a lower tub part and an upper tub part by a dividing surface extended in a direction inclined downwardly and frontwardly. The left and right sidewalls are respectively divided into two portions by the dividing surface. An inner surface of the upper tub part includes at least a part of an inner surface of each of the ceiling part, the front wall, the left sidewall, and the right sidewall. The upper tub part is supported by the lower tub part to be able to open the testing space.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: May 3, 2016
    Assignee: ESPEC CORP.
    Inventors: Osamu Matsuguma, Kensuke Akamatsu
  • Patent number: 9285441
    Abstract: A magnetic field correction system including apparatus and method for adjusting a magnetic field is provided, for example to enhance the uniformity of the field in a Nuclear Magnetic Resonance (NMR) operation. The system is of an electronic “shimming” type. The layout of the wires of the shim coils is simplified to conserve working space inside a magnet, such as an NMR magnet. The complexity of the shimming system is removed from the coils and transferred to the current controlling electronics. The current paths do not require cross-over points, and groups of parallel wires are arranged such that the wire groups have axes with different directional orientations. By deploying such shim wire groups in differently oriented axial directions, a compact shimming apparatus is provided for generating a controllable corrective magnetic field for adjusting a main original field, such as to enhance the homogeneity of the main field.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: March 15, 2016
    Assignee: ABQMR, INC.
    Inventor: Andrew F McDowell
  • Patent number: 9259556
    Abstract: A guidewire (100) for use with interventional magnetic resonance imaging has a guidewire body (102) having a distal end and a proximal end and reserving a space therein, a dipole antenna (108) disposed in the space reserved within the guidewire body, the dipole antenna being adapted to be electrically connected to a signal processing system through a first signal channel (110) through the proximal end of the guidewire body, and a loop antenna (112) disposed in the space reserved within the guidewire body toward the distal end of the guidewire body, the loop antenna (112) being adapted to be electrically connected to the signal processing system through a second signal channel (114) through the proximal end of the guidewire body. The dipole antenna and the loop antenna are each constructed to receive magnetic resonance imaging signals independently of each other and to transmit received signals through the first and second signal channels, respectively, to be received by the signal processing system.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 16, 2016
    Assignee: The United States of America, as represented by the Secretary, Department of Health and Human Services
    Inventor: Ozgur Kocaturk
  • Patent number: 9146293
    Abstract: A method for estimating receiver coil sensitivity in a magnetic resonance (MR) system having a plurality of coils in a coil array including a reference coil, including steps of estimating receiver coil sensitivity in each of the plurality of coils in the coil array of the MR system using one of an electromagnetic field method, a bias field method, and a uniform transmit field method. Each of the plurality of coils in the coil array includes one or more of a surface coil, a volume coil, a set of coil arrays, or an antenna element of a coil array. The method further includes steps of obtaining a reference image using the reference coil; generating a measured sensitivity map using the reference coil; and for each of the plurality of coils of the coil array, calculating a receiver coil sensitivity map.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 29, 2015
    Assignee: Ohio State Innovation Foundation
    Inventors: Jinghua Wang, Zhong-Lin Lu
  • Patent number: 9037213
    Abstract: Tracking based on the gradient fields of magnetic resonance imaging (MRI) scanners based on passive operation of the tracking system without any change of the scanner's hardware or mode of operation. To achieve better tracking performance, a technique to create a custom MRI pulse sequence is disclosed. Through this technique any standard pulse sequence of the scanner can be modified to include gradient activations specifically designated for tracking. These tracking gradient activations are added in a way that does not affect the image quality of the native sequence. The scan time may remain the same as with the native sequence or longer due to the additional gradient activations. The tracking system itself can use all the gradient activations (gradient activations for imaging and gradient activations for tracking) or eliminate some of the gradients and lock onto the specific gradient activations that are added to the custom pulse sequence.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: May 19, 2015
    Assignee: ROBIN MEDICAL INC.
    Inventors: Abraham Roth, Erez Nevo
  • Patent number: 9014786
    Abstract: The present invention is directed to a device and method for opening obstructed body internal passages and for sensing and characterizing tissues and substances in contact with the device. In general, the device comprises a catheter tube capable of inducing vibrations in a guidewire contained therein, wherein said vibrations of the guidewire are utilized for opening a passage through an occlusion. The in-vivo vibrations may be induced by means of a magnetic field actuating means and a guidewire comprising magnetic coupling means, or by means of transducers, which may be also used for the sensing. The invention also relates to the field of minimal invasive catheterization, particularly an apparatus for opening and/or removing obstructions occluding body internal passages by means of an active guidewire comprising a coil to which an alternating voltage can be applied. In that way the guidewire can vibrate if an external magnetic field is applied.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 21, 2015
    Assignee: Eyoca Medical Ltd.
    Inventors: Ran Carmeli, Jonathan Einav, Itai Yonat
  • Publication number: 20150099965
    Abstract: A catheter-mounted, expandable or set in position, coil for magnetic resonance imaging. The coil having a catheter sheath including an elongated tube with a central axis, the catheter sheath having an opening at an end thereof; an expandable coil including a conductive material connected to an expansion mechanism which, when deployed, maintains the expandable receive coil shape; and a cable running through the catheter sheath, the cable being electrically connected to the coil inductive loop.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Nelly A. Volland, J. Rock Hadley, Dennis Lee Parker, Evgueni G. Kholmovski, Robb Phillip Merrill, Nassir F. Marrouche
  • Patent number: 8989841
    Abstract: An interface device enables an intracavity probe to be used with a magnetic resonance (MR) system for the purpose of obtaining images or spectra of a region of interest within a cavity of a patient. The probe includes a shaft, a balloon at one end thereof, and a coil loop within the balloon. The coil loop preferably includes two drive capacitors and a tuning capacitor, all of which in series. A junction node between the drive capacitors serves as a ground for electrically balancing the coil loop. Diametrically opposite the junction node, the tuning capacitor enables the coil loop to resonate at the operating frequency of the MR system. Across each drive capacitor is connected an output cable having an electrical length of SL+n(?/4). The output cables terminate in a plug that is used to connect the coil loop to the interface device.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: March 24, 2015
    Assignee: Bayer Medical Care Inc.
    Inventor: George J. Misic
  • Patent number: 8989840
    Abstract: An implantable stimulation system comprises a stimulator for generating electrical stimulation and a conductive stimulation lead having a proximal end electrically coupled to the stimulator, wherein at least a first component of the impedance looking into the stimulator is substantially matched to the impedance of the stimulation lead. At least one distal stimulation electrode is positioned proximate the distal end of the stimulation lead.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: March 24, 2015
    Assignee: Medtronic, Inc.
    Inventors: Piotr Przybyszewski, Carl D. Wahlstrand, Timothy J. Davis, Gregory A. Hrdlicka, James M. Olsen
  • Patent number: 8983574
    Abstract: A catheter device for deploying a local magnetic resonance imaging (MRI) coil is provided. The catheter device includes an outer catheter shaft having a lumen extending from a proximal end to a distal end and an inner catheter shaft having a lumen extending from a proximal end to a distal end. The outer and inner catheter shafts are movably engaged such that one can move relative to the other. A plurality of non-metallic filaments are coupled on one end to the outer catheter shaft and coupled on another end to the inner catheter shaft. The plurality of non-metallic filaments are intertwined to form a braid, to which a local MRI coil is coupled. The local MRI coil is configured to have a circular shape when the braid is in a deployed position. Additionally, motion tracking coils can be coupled to the braid to provide motion tracking information for motion compensation.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: March 17, 2015
    Assignee: The Brigham and Women's Hospital
    Inventors: Ehud Schmidt, Rafael Diana
  • Patent number: 8965496
    Abstract: A method of displaying an image of the location of one or more low voltage structures in tissue is provided. The method includes receiving electrical mapping data corresponding to a portion of the tissue. The method further includes generating an image using the electrical mapping data. Electrical mapping values within at least one voltage range having two endpoints that bound the upper and lower limits of the voltage range are distinguishable from electrical mapping values outside the at least one voltage range. The two endpoints are selected to distinguish the one or more low voltage structures of the tissue from other portions of the tissue.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 24, 2015
    Inventor: Steven J. Bailin
  • Publication number: 20150045647
    Abstract: A method, including capturing, from an imaging system, a three-dimensional (3D) image of a body cavity, and using the captured 3D image to construct a simulated surface of the body cavity. A probe having a location sensor is inserted into the body cavity, and in response to multiple location measurements received from the location sensor, multiple positions are mapped within respective regions of the body cavity so as to generate respective mapped regions of the simulated surface. Based on the simulated surface and the respective mapped regions, one or more unmapped regions of the simulated surface are delineated, and the simulated surface of the body cavity is configured to indicate the delineated unmapped regions.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 12, 2015
    Applicant: BIOSENSE WEBSTER (ISRAEL), LTD.
    Inventor: Natan Sharon Katz
  • Patent number: 8948843
    Abstract: The invention relates to a probe (10) for an implantable medical device. The probe has a distal end (2) and a proximal end (3), and the probe (10) moreover comprises an electrode (1) at the distal end. The electrode is connected to a wire (5) extending from the electrode to the proximal end of the probe, where the resistivity of the wire is non-uniform along the length of the wire. The wire may have high resistivity at the distal end of the probe and low resistivity wires elsewhere. The high resistivity wires reduce the peak current density in the tissue of an implanted device, and thus prevents destructive heating and/or undesired stimulation of tissue during MRI examination. This highly contributes to MR safety which is a highly desired feature for these implantable electrical stimulation devices.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 3, 2015
    Assignee: Sapiens Steering Brain Stimulation B.V.
    Inventors: Dirk Willem Harberts, Ke Wang, Michel Marcel Jose Decre
  • Patent number: 8914096
    Abstract: An adaptation probe for insertion into implanted electrode devices of active medical implants to enable them for use in high-frequency magnetic alternating fields of MRI systems comprises an elongated, flexible probe body, and at least one electrical assembly, which has one or more electrical components connected to an interface, in the probe body, and which can be electrically connected to a supply lead of the electrode device such that the electrically properties of the electrode device can be adapted, in particular the frequency-dependent resistance, impedance, capacitance, or inductance thereof.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: December 16, 2014
    Assignee: Biotronik SE & Co. KG
    Inventors: Ingo Weiss, Michael Friedrich, Stefan Knorr, René Fischer, Marc Steffen Schurr
  • Patent number: 8909322
    Abstract: A catheter for magnetic resonance (MR) guided procedures comprising: a catheter body having a lumen for accommodating an intravascular device; a magnetic coupling component in the catheter body, the magnetic coupling component being designed to magnetically couple with a conductive length on the intravascular device, the magnetic coupling resulting in a signal; the catheter having a connection to deliver the signal to a processor.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 9, 2014
    Assignee: Sunnybrook Health Sciences Centre
    Inventors: Kevan Anderson, Graham Wright
  • Patent number: 8882656
    Abstract: A diagnostic catheter and method of use for analyzing tissue is provided. A method for analyzing tissue in accordance with one embodiment of the present invention includes inserting a catheter having a sensor at its distal end into the body of a patient, applying suction through the catheter to secure the tissue to the catheter and then analyzing the tissue with the sensor. An apparatus for analyzing tissue within the body of a patient in accordance with an alternative embodiment of the present invention is also provided. This alternative embodiment includes a catheter having a first end and a second end, the first end having an orifice and a sensor, the catheter also having a lumen.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: November 11, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Jeffrey M. Wendlandt
  • Patent number: 8886288
    Abstract: An MRI-compatible catheter includes an elongated flexible shaft having opposite distal and proximal end portions. A handle is attached to the proximal end portion and includes an actuator in communication with the shaft distal end portion that is configured to articulate the shaft distal end portion. The distal end portion of the shaft may include an ablation tip and includes at least one RF tracking coil positioned adjacent the ablation tip that is electrically connected to an MRI scanner. The at least one RF tracking coil is electrically connected to a circuit that reduces coupling when the at least one RF tracking coil is exposed to an MRI environment. Each RF tracking coil is a 1-10 turn solenoid coil, and has a length along the longitudinal direction of the catheter of between about 0.25 mm and about 4 mm.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: November 11, 2014
    Assignee: MRI Interventions, Inc.
    Inventors: Kimble L. Jenkins, Peter Piferi, Kamal Vij, Daniele Ghidoli, Jesse Flores
  • Patent number: 8886292
    Abstract: An apparatus for percutaneously implanting a localization wire into a tissue mass comprises a cannula with a preloaded localization wire having a distal end and at least one anchor. An actuator is in operable communication with the cannula and is configured for operation between a charged condition and a discharged condition to retract the cannula toward a retracted position to expose the distal end and the at least one anchor of the localization wire to the tissue mass, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: November 11, 2014
    Assignee: Bard Peripheral Vascular, Inc.
    Inventors: Richard M. Chesbrough, Steven E. Field, Ryan L. Goosen, Andrew R. Squires, Ronald B. Peel
  • Patent number: 8880149
    Abstract: Localization of a coil is provided for magnetic resonance (MR)-guided intervention. A multi-scale decomposition and characteristic transitions in the power spectra for the coil are used to determine a distribution of likelihood of the coil being at each of various locations and/or to determine a confidence in the position determination. For example, the power spectra along each axis is used to generate a likelihood distribution of the location of the coil. The power spectra are decomposited at different scales. For each scale, the modulus maxima reflecting transitions in the power spectra are matched using various criteria. A likelihood is calculated for each of the matched candidates from characterizations of the matched candidates. The likelihood distribution is determined from a combination of the likelihoods from the various scales.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: November 4, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Julien Christian Barbot, Sunil Goraksha Patil, Klaus J. Kirchberg, Steven M. Shea
  • Publication number: 20140275980
    Abstract: An MRI-compatible tip assembly for an MRI-compatible medical device includes a first tubular member, a second tubular member, a ring electrode, and a tip electrode. The tip electrode proximal end is secured to the first tubular member distal end. The second tubular member distal end is inserted through the ring electrode and is secured to the first tubular member proximal end. When assembled, the tip assembly is a substantially rigid structure. Each tubular member has a recessed portion for a tracking coil.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: MRI Interventions, Inc.
    Inventor: Jesse Flores
  • Patent number: 8825133
    Abstract: An MRI-compatible catheter that reduces localized heating due to MR scanner-induced currents includes an elongated flexible shaft having a distal end portion and an opposite proximal end portion. A handle is attached to the proximal end portion and includes an electrical connector interface configured to be in electrical communication with an MRI scanner. One or more RF tracking coils are positioned adjacent the distal end portion of the shaft. Each RF tracking coil includes a conductive lead, such as a coaxial cable, that extends between the RF tracking coil and the electrical connector interface and electrically connects the RF tracking coil to an MRI scanner. In some embodiments of the present invention, the conductive lead has a length sufficient to define an odd harmonic/multiple of a quarter wavelength of the operational frequency of the MRI Scanner, and/or includes a series of pre-formed back and forth segments along its length.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: September 2, 2014
    Assignee: MRI Interventions, Inc.
    Inventors: Kimble L. Jenkins, Peter Piferi, Kamal Vij, Daniele Ghidoli, Jesse Flores, Parag V. Karmarkar, Rajesh Pandey
  • Patent number: 8818487
    Abstract: A magnetic resonance imaging apparatus controls image reconstruction based on magnetic resonance signals collected when a peak of detected respiration level falls within an allowable range which changes based on a change in a plurality of peak values of a plurality detected respiration levels.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: August 26, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Shigehide Kuhara
  • Patent number: 8805475
    Abstract: A system and method includes a medical device configured to be inserted into a subject having an imaging coil coupled thereto and configured to be inserted into the subject during a medical procedure to provide tracking information regarding a position of the medical device. A circuit is connected to the imaging coil to switch the circuit between an energy harvesting configuration and an image data acquisition configuration. The circuit includes an energy harvesting path and an imaging data path connected to the imaging coil that are electrically distinct. An energy storage device is connected to receive power delivered along the energy harvesting path when the circuit is in the energy harvesting configuration. An amplifier is connected to receive power from the energy storage device and receive imaging data signals from the imaging coil over the imaging data path to thereby amplify the imaging data signals.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: August 12, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Krishna N. Kurpad, Madhav Venkateswaran
  • Patent number: 8801601
    Abstract: Landmark directional guidance is provided to an operator of an endoscopic device by displaying graphical representations of vectors adjacent a current image captured by an image capturing device disposed at a tip of the endoscopic device and being displayed at the time on a display screen, wherein the graphical representations of the vectors point in directions that the endoscope tip is to be steered in order to move towards associated landmarks such as anatomic structures in a patient.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 12, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Giuseppe Maria Prisco, Vincent Duindam
  • Patent number: 8798713
    Abstract: In a method for detecting rotational orientation and position tracking of an inductively coupled RF (ICRF) coil using a transmit array system, a conventional body birdcage coil is used, but the quadrature hybrid is eliminated to use the two excitation-channels separately. The transmit array system provides RF excitations such that the body birdcage coil creates linearly polarized and circulating RF pulses instead of a conventional rotational forward polarized excitation. Inductively coupled RF (ICRF) coils can be constructed on catheters for detecting rotational orientation and tracking purposes. The modifications on anatomy and ICRF coil images are different due to the RF excitation scheme such that the ICRF coil can be separated from the anatomy in real-time. After separating the ICRF coil from the anatomy, a color-coded image can be reconstructed, for example.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: August 5, 2014
    Inventors: Haydar Celik, Ergin Atalar
  • Patent number: 8768433
    Abstract: An MRI-guided medical device includes an elongated sheath, an elongated dilator, and an elongated needle. The sheath has a distal end, an opposite proximal end, and a central lumen extending between the proximal and distal ends. The sheath comprises MRI-compatible material and includes a tracking member located adjacent to the sheath distal end that is visible in an MRI image. The dilator comprises MRI-compatible material and is movably disposed within the sheath lumen. A distal end of the dilator is configured to extend outwardly from the sheath distal end and dilator includes at least one tracking member that is visible in an MRI image. The needle is movably disposed within the dilator lumen and is movable between stored and operative positions relative to the dilator. An RF shield may be coaxially disposed within the elongated sheath so as to surround a portion of the sheath central lumen.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 1, 2014
    Assignee: MRI Interventions, Inc.
    Inventors: Kimble L. Jenkins, Peter Piferi, Kamal Vij
  • Patent number: 8731640
    Abstract: A fluid path system includes a vial containing a pharmaceutical product therein. A dissolution fluid path is also included in the fluid path system, the dissolution fluid path having an output end in fluid communication with the vial and an input end attached to a pressure vessel containing a dissolution medium. A delivery fluid path is also included in the system having a first end hermetically attached to the vial to transport therefrom a mixture of dissolved pharmaceutical product and dissolution medium and a second end connected to a receiving vessel to receive the mixture. A dissolution fluid path valve is positioned between the pressure vessel and the dissolution fluid path to control flow of the dissolution medium, and a delivery fluid path valve is also included in the fluid path system to control flow of the mixture from the delivery fluid path to the receiving vessel.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: John Arthur Urbahn, Jan Henrik Ardenkjaer-Larsen, Andrew Michael Leach, Eric John Telfeyan, David Key Dietrich, David Brandon Whitt, Peter Miller, Ernst Wolfgang Stautner
  • Patent number: 8718744
    Abstract: An imaging medical apparatus has at least one device to identify a plane in space. The device has: a light source that emits a fan-shaped light beam, the light source is rotatable around a light source rotation axis. The device also has a mirror that reflects the fan-shaped light beam, the mirror being rotatable around a mirror rotation axis and encompassing a mirror plane. The mirror rotation axis and the surface normal of the mirror plane enclose an angle greater than 0° and less than 90°.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: May 6, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thilo Hannemann
  • Patent number: 8710826
    Abstract: Systems and methods for sensing external magnetic fields in implantable medical devices are provided. One aspect of this disclosure relates to an apparatus for sensing magnetic fields. An apparatus embodiment includes a sensing circuit with at least one inductor having a magnetic core that saturates in the presence of a magnetic field having a prescribed flux density. The apparatus embodiment also includes an impedance measuring circuit connected to the sensing circuit. The impedance measuring circuit is adapted to measure impedance of the sensing circuit and to provide a signal when the impedance changes by a prescribed amount. According to an embodiment, the sensing circuit includes a resistor-inductor-capacitor (RLC) circuit. The impedance measuring circuit includes a transthoracic impedance measurement module (TIMM), according to an embodiment. Other aspects and embodiments are provided herein.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 29, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Karl Gauglitz, Thomas M. Bocek, Mark Rutzer, Lorin W. Matthews, William E. Reagor, Blair Erbstoeszer
  • Patent number: 8692559
    Abstract: An interface device provides one or more electrical connection points disposed on a connector sleeve. The connection points provide electrical communication between a lead connector end of an implantable medical lead and one or more leads of a testing device in such a manner as to minimize potential damage to the lead connector end.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: April 8, 2014
    Assignee: Pacesetter, Inc.
    Inventors: Li Jin, Hanson Chang, Keith Victorine, Tyler Strang, Armando M. Cappa
  • Publication number: 20140094684
    Abstract: A medical probe includes a flexible insertion tube having a distal end for insertion into a body cavity and having a proximal end. The probe further includes an electrode attached to the distal end of the insertion tube and configured to make electrical contact with tissue in the body cavity. An electrical lead runs through the insertion tube between the distal and proximal ends. In addition a coil is electrically coupled between the electrode and the lead in the insertion tube so as to define a resonant circuit having a resonant frequency in a range between 1 MHz and 300 MHz.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 3, 2014
    Applicant: BIOSENSE WEBSTER (ISRAEL), LTD.
    Inventors: Assaf Govari, Christopher Thomas Beeckler, Athanassios Papaioannou
  • Patent number: 8676295
    Abstract: A tracking device configured to be coupled to an interventional instrument and tracked by a magnetic resonance imaging system is provided. The tracking device includes, for example, paramagnetic and diamagnetic components that form first and second tracking members. When the tracking device is adjusted into a first arrangement, the tracking device will produce a local magnetic field in the presence of the magnetic field of an MRI system that is measurable by the MRI system. However, when the tracking device is adjusted into a second arrangement, the local magnetic field produced by the tracking device is reduced relative to the first arrangement, wherein the reduced local magnetic field produces substantially no magnetic field disturbances detectable by the MRI system. Images may be acquired of a patient in which the tracking device has been introduced and, using a numerical fitting method, an accurate location of the tracking device can be determined.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: March 18, 2014
    Assignee: Sunnybrook Health Sciences Center
    Inventors: Charles H. Cunningham, William Dominquez-Viqueira
  • Patent number: 8660635
    Abstract: A method and apparatus for optimizing a computer assisted procedure is provided. A method and apparatus for performing a procedure is also provided. Data can be accessed and processed to optimize and perform a procedure. The data can be augmented or supplemented with patient specific data.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: February 25, 2014
    Assignee: Medtronic, Inc.
    Inventors: David Simon, Mark S. Lent, Ruchika Singhal, Andrew N. Csavoy
  • Patent number: 8643372
    Abstract: An electrically conductive transmission line is configured for use in the magnet bore of a magnetic resonance system and includes at least one inductive coupling element for coupling at least two lead segments of the line. The coupling element includes a paramagnetic and/or ferromagnetic material.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: February 4, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Steffen Weiss
  • Publication number: 20140005526
    Abstract: A medical probe, including a flexible insertion tube having a distal end for insertion into a body cavity. An array of spatially separated coils is positioned within the distal end. A processor is configured to process respective signals generated by the coils in response to magnetic resonance of tissue in the body cavity, and to process the signals while applying a phase delay responsive to a separation between the coils so as to image the tissue.
    Type: Application
    Filed: July 2, 2012
    Publication date: January 2, 2014
    Inventors: Assaf Govari, Andres Claudio Altmann, Yitzhack Schwartz, Yaron Ephrath, Christopher Thomas Beeckler
  • Patent number: 8610531
    Abstract: A microcoil is manufactured by rolling a trace unit in such a way as to form at least one winding. The trace unit is comprised of a conductive trace attached to a flexible insulating film. A preferred embodiment of the microcoil contains both a first winding and a second winding electrically connected and spaced apart by ajoining portion. The microcoil may be used for internal magnetic resonance imaging of patient by attaching the microcoil to a catheter.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: December 17, 2013
    Assignee: Medtronic, Inc.
    Inventor: Gerald W. Mills
  • Patent number: RE44736
    Abstract: A magnetic resonance probe may include a plurality of center conductors, at least some center conductors including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core, a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe, an outer conductive layer at least partially disposed about the first dielectric layer, and a plurality of electrodes, at least one electrode being coupled to one of the center conductors and disposed at least partly on a probe surface.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: January 28, 2014
    Assignee: MRI Interventions, Inc.
    Inventors: Parag Karmarkar, Ingmar Viohl