Patents by Inventor Bharat Ramachandran

Bharat Ramachandran 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).

  • Publication number: 20160102969
    Abstract: An optical shape sensing system and method with at least two optical fibers (OSF1, OSF2) both comprising optical shape sensing elements. A processor (P) is arranged to register a coordinate system indicative of a position of one of the optical fibers (OSF1) in space, and to register a position (R2) of the other optical fiber (OSF2) in relation to this coordinate system. An optical console system (C, C1, C2) serves to interrogate the optical shape sensing elements in both optical fibers (OSF1, OSF2), and to accordingly determine a measure of a three-dimensional shape (I) of both optical fibers (OSF1, OSF2), based on the registered position (R2) of the second optical fiber (OSF2) in relation to the coordinate system. This provide the possibility of providing 3D optical shape sensing of the length of both optical fibers (OSF1, OSF2), thus allowing 3D shape reconstruction of e.g. long medical devices with lengths of several meters. More than two shape sensing optical fibers, e.g.
    Type: Application
    Filed: June 27, 2014
    Publication date: April 14, 2016
    Inventors: MARCO VERSTEGE, SANDER HANS DENISSEN, BHARAT RAMACHANDRAN
  • Publication number: 20160008089
    Abstract: A shape sensing system includes a guide tube (304) and an optical shape sensing device (104) including one or more optical fibers and being proximally fixed at a fixation point and being disposed within the guide tube. An interventional instrument (102) is rigidly attached to a handle (212) to prevent rotation of the instrument relative to the handle. The instrument has a lumen configured to receive the guide tube therein such that the optical shape sensing device is unconstrained throughout the instrument and the handle, and the guide tube is free to slip relative to at least rotation of the instrument and the handle without transferring torsional friction to optical shape sensing device.
    Type: Application
    Filed: March 26, 2014
    Publication date: January 14, 2016
    Inventors: David Paul Noonan, Raymond Chan, Molly Lara Flexman, Bharat Ramachandran
  • Publication number: 20150255004
    Abstract: A training or rating system includes a shape sensing enabled device (104) and a database (140) of possible shapes and sequences of shapes for the shape sensing enabled device. The possible shapes and sequences of shapes include a collection of poses derived by appropriately performing a procedure with the shape sensing enabled device. A comparison module (154) is configured to compare real-time poses of the shape sensing enabled device with the collection of poses in the database to output comparison feedback for a user of the shape sensing enabled device.
    Type: Application
    Filed: September 20, 2013
    Publication date: September 10, 2015
    Inventors: Robert Manzke, Raymond Chan, Bharat Ramachandran, Michael Chun-chieh Lee
  • Publication number: 20150238275
    Abstract: A volume mapping instrument (20), deployable within a partially or a completely enclosed anatomical volume, employs one or more medical tools (40) with each medical tool (40) being transitional between a deployable structural configuration to orderly position each medical tool (40) within the anatomical volume and a mapping structural configuration to anchor the medical tool (40) against the boundary of the anatomical volume. The volume mapping instrument (20) further employs an optical shape sensor (30) to generate one or more encoded optical signals indicative of a shape of the boundary of the anatomical volume in response to each medical tool (40) being transitioned from the deployable structural configuration to the mapping structural configuration within the anatomical volume. Based on the encoded optical signal(s), a volume mapping module (51) is utilized to map a portion or an entirety of the boundary of the anatomical volume.
    Type: Application
    Filed: September 20, 2013
    Publication date: August 27, 2015
    Inventors: Cynthia Ming-fu Kung, Karen Irene Trovato, Raymond Chan, Bharat Ramachandran, Laurent Verard, Robert Manzke
  • Publication number: 20150230730
    Abstract: The present invention relates a pulmonary plethysmographic system (10), the system with a garment (11) wearable on the body of a mammal, e.g. a human, the garment comprising a shape sensing fiber (12) with a plurality of optical fibers (30) to facilitate optical measurements of strain along the length of the shape sensing fiber. An optical interrogation unit (13) is optically connected with the optical fibers in the shape sensing fiber for measuring the strain along the plurality of optical fibers. A processing unit (14) is processing the strain data into three-dimensional position data over time, the processing unit further being arranged for processing the position data over time into volume data indicative of pulmonary data about the mammal wearing the garment. The invention is advantageous for obtaining an improved system for pulmonary measurement providing a more realistic measurement of the pulmonary function of the mammal.
    Type: Application
    Filed: October 1, 2013
    Publication date: August 20, 2015
    Inventors: Joerg Sabczynski, Bharat Ramachandran
  • Publication number: 20150150536
    Abstract: A system for pulmonary elastography includes an ultrasound probe (120) configured to evaluate tissue of a target area by transmitting a signal and receiving a response. A contact device (126) is coupled to the ultrasound probe to provide contact between the ultrasound probe and the tissue. An image processing module (110) is configured to output one or more elastograms according to the response.
    Type: Application
    Filed: May 27, 2013
    Publication date: June 4, 2015
    Inventors: Bharat Ramachandran, Christopher Stephen Hall
  • Publication number: 20150124264
    Abstract: A system and method for shape sensing with optical fiber include collecting (610) shape data from a shape sensing optical fiber device. The shape data are tested (620) to determine data positions that exceed an acceptable threshold based on geometrical expectations of the shape data. The shape data corresponding to the data positions that exceed an acceptable threshold are rejected (640). Acceptable shape data are rendered (650) to provide a stable shape sensing data set.
    Type: Application
    Filed: May 1, 2013
    Publication date: May 7, 2015
    Inventors: Bharat Ramachandran, Robert Manzke, Raymond Chan
  • Publication number: 20150087927
    Abstract: A voxel tagging system (100) includes a sensing enabled device (104) having an optical fiber (126) configured to sense induced strain within the device (Bragg grating sensor). An interpretation module (112) is configured to receive signals from the optical fiber interacting with an internal organ, e.g. heart, and to interpret the signals to determine positions visited by the at least one optical fiber within the internal organ. A data source (152, 154) is configured to generate data associated with an event or status, e.g. respiration, ECG phase, time stamp, etc.. A storage device (116) is configured to store a history (136) of the positions visited in the internal organ and associate the positions with the data generated by the data source (152, 154).
    Type: Application
    Filed: May 14, 2013
    Publication date: March 26, 2015
    Inventors: Robert Manzke, Bharat Ramachandran, Raymond Chan, Tobias Klinder
  • Publication number: 20150045692
    Abstract: A fiber optic shape sensing system includes an elongated fiber optic shape sensing device (116) having a proximal region and a distal region. The distal region includes a first temperature at which shape sensing is performed. A temperature control device (102, 104, 106) is configured to control a second temperature at the proximal region of the shape sensing device to match the first temperature. The proximal region includes a launch region (118) for launching light into at least one optical fiber of the fiber optical shape sensing device.
    Type: Application
    Filed: March 20, 2013
    Publication date: February 12, 2015
    Inventors: Bharat Ramachandran, Robert Manzke, Raymond Chan
  • Publication number: 20140354300
    Abstract: A system for accounting for electromagnetic (EM) distortion with an EM tracking system includes a sensor array (144) configured to sense EM energy in a target volume. An EM sensing correction module (140) is configured to analyze data from the sensor array to detect EM distorters in the target volume. The EM sensing correction module is further configured to compare distortion fingerprints stored in a database (142) to identify a distortion source.
    Type: Application
    Filed: November 14, 2012
    Publication date: December 4, 2014
    Inventors: Bharat Ramachandran, Ameet Kumar Jain
  • Publication number: 20140308016
    Abstract: A method, system, and program product hold and manipulate tools during an intervention procedure. The device comprises: a holder body in fixed attachment with a shape-sensing fiber optic fiber; one of a plurality of tools being held by the holder body in coupled alignment with the shape-sensing fiber optic fiber.
    Type: Application
    Filed: October 17, 2012
    Publication date: October 16, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Bharat Ramachandran, Robert Manzke, Raymond Chan
  • Publication number: 20140243687
    Abstract: A system and method for functioning organ assessment include a sensing enabled flexible device (102) having an optical fiber configured to sense induced strain continuously over a length of the flexible device. The flexible device includes a manipulation mechanism (105) configured to permit engagement with an interior wall of an organ over the length. An interpretation module (115) is configured to receive optical signals from the optical fiber between two phases of movement of the organ while the organ is functioning and to interpret the optical signals to quantify parameters associated with the functioning of the organ.
    Type: Application
    Filed: October 19, 2012
    Publication date: August 28, 2014
    Inventors: Bharat Ramachandran, Raymond Chan, Robert Manzke
  • Publication number: 20140243660
    Abstract: A system and method for shape sensing assistance in a medical procedure includes a three-dimensional image (111) of a distributed pathway system (148). A shape sensing enabled elongated device (102) is included for insertion into the pathway system to measure a shape of the elongated device in the pathway system. A pathway determination module(144) is configured to compute a planned path to a target in the three-dimensional image and compute permissible movements of the elongated device at diverging pathways in the pathway system to provide feedback for deciding which of the diverging paths to take in accordance with the planned path.
    Type: Application
    Filed: October 8, 2012
    Publication date: August 28, 2014
    Applicant: KONINKLILKE PHILIPS N.V.
    Inventors: Tobias Klinder, Bharat Ramachandran, Robert Manzke, Raymond Chan
  • Publication number: 20140222370
    Abstract: A system, device and method include a sensing enabled device (104) having at least one optical fiber (126) configured to sense induced strain. An interpretation module (115) is configured to receive signals from the at least one optical fiber interacting with a volume and to interpret the signals to determine positions visited by the at least one optical fiber within the volume. A storage device (116) is configured to store a history of the positions visited in the volume.
    Type: Application
    Filed: August 28, 2012
    Publication date: August 7, 2014
    Inventors: Robert Manzke, Bharat Ramachandran, Raymond Chan
  • Publication number: 20140212025
    Abstract: A registration system and method includes a configurable device (104) having one or more moveable features (122) such that movement of the moveable features can be determined relative to a reference to define a specific configuration of the configurable device. An imaging system (110) has a display on which the configurable device is viewable. A processing device (112) is configured to register the configurable device with a coordinate system of the imaging system based on the specific configuration of the configurable device.
    Type: Application
    Filed: September 5, 2012
    Publication date: July 31, 2014
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Paul Thienphrapa, Bharat Ramachandran, Aleksandra Popovic
  • Publication number: 20140206988
    Abstract: A system, device and method include a sensing enabled device having an optical fiber configured to perform distributed sensing of temperature-induced strain. An interpretation module is configured to receive optical signals from the optical fiber within a body and interpret the optical signals to determine one or more temperatures or temperature gradients of the device.
    Type: Application
    Filed: August 27, 2012
    Publication date: July 24, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Bharat Ramachandran, Robert Manzke, Raymond Chan
  • Publication number: 20140155737
    Abstract: A system and method include a shape sensing enabled device too (102) having an optical fiber (126). An interpretation module (115) is configured to receive optical signals from the optical fiber within a structure and interpret the optical signals to determine a shape of the device. An image generation module (140) is configured to receive the shape of the device, register the shape with an image volume of the structure and generate a curved Memory multi-planar reconstruction (CMPR) rendering based on the shape.
    Type: Application
    Filed: August 13, 2012
    Publication date: June 5, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Robert Manzke, Raymond Chan, Martin Bernardus Van Der Mark, Gert Wim 'T Hooft, Bharat Ramachandran, Laurent Verard
  • Publication number: 20130325387
    Abstract: A medical instrument, system and method for calibration are provided. The instrument includes a body (202) and a shape sensing system (204) coupled to the body to permit determination of a shape of the body. A memory element (205, 206) is coupled to the body and configured to store data associated with calibration of the body, the data being readable through a cable (210) connectable to the body so that the data permits calibration of the body.
    Type: Application
    Filed: January 20, 2012
    Publication date: December 5, 2013
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Robert Manzke, Raymond Chan, Christopher Stephen Hall, Bharat Ramachandran
  • Publication number: 20130317356
    Abstract: An optical shape sensing system employing an optical fiber (20) and one or more reference markers (41). Each reference marker (41) has an identifiable reference tracking position within a reference coordinate system (42). The optical fiber (20) has a reconstruction launch point (21)within the reference coordinate system (42) serving as a basis for an execution of a shape reconstruction of the optical fiber (20) within the reference coordinate system (42). The reconstruction launch point (21)of the optical fiber (20) has a known spatial relationship with each reference marker (41) to facilitate an identification of the reconstruction launch point (21)within the reference coordinate system (42).
    Type: Application
    Filed: January 24, 2012
    Publication date: November 28, 2013
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Bharat Ramachandran, Raymond Chan, Robert Manzke
  • Publication number: 20130308137
    Abstract: An integrated optical shape sensing system and method include an arrangement structure (132) configured to receive a fiber port or connector. A platform (130) is configured to provide a distance relationship with the arrangement structure such that the fiber port or connector is trackable to provide a location reference. The platform secures a patient in proximity to the arrangement structure. An optical shape sensing enabled interventional instrument (102) has a first optical fiber cable connectable to the fiber port or connector. An optical interrogation module (108) is configured to collect optical feedback from the instrument and has a second optical fiber cable connectable to the fiber port or connector such that a known reference position is provided for accurate shape reconstruction.
    Type: Application
    Filed: January 23, 2012
    Publication date: November 21, 2013
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Robert Manzke, Raymond Chan, Gert Wim 'T Hooft, Adrien Emmanuel Desjardins, Bharat Ramachandran