Patents by Inventor Sunil K. Srivastava

Sunil K. Srivastava 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).

  • Patent number: 10888455
    Abstract: Systems and methods are provided for image-guided delivery of therapeutics to an eye. An optical coherence tomography (OCT) imager is configured to produce at least one OCT image of the eye. A therapeutic delivery system is configured to deliver a therapeutic to the eye through a distal end of a delivery mechanism. A system control is configured to determine a position of the distal end of the delivery mechanism and control the therapeutic delivery system according to at least the determined position.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: January 12, 2021
    Assignee: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Sunil K. Srivastava, Justis P. Ehlers, Yuankai K. Tao
  • Patent number: 10628940
    Abstract: Systems and methods are provided for automated analysis of angiographic images. An angiographic imaging system is configured to capture a first image of a region of interest, representing a first time, and a second image of a region of interest, representing a second time. A registration component is configured to register the first image to the second image. A difference component is configured to generate a difference image from the first image and the second image. A pattern recognition component is configured to assign a clinical parameter to the region of interest from the difference image and at least one of the first image and the second image.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: April 21, 2020
    Assignee: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Sunil K. Srivastava, Justis P. Ehlers
  • Publication number: 20190231591
    Abstract: Systems and methods are provided for image-guided delivery of therapeutics to an eye. An optical coherence tomography (OCT) imager is configured to produce at least one OCT image of the eye. A therapeutic delivery system is configured to deliver a therapeutic to the eye through a distal end of a delivery mechanism. A system control is configured to determine a position of the distal end of the delivery mechanism and control the therapeutic delivery system according to at least the determined position.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Inventors: Sunil K. Srivastava, Justis P. Ehlers, Yuankai K. Tao
  • Patent number: 10278859
    Abstract: Systems and methods are provided for image-guided delivery of therapeutics to an eye. An optical coherence tomography (OCT) imager is configured to produce at least one OCT image of the eye. A therapeutic delivery system is configured to deliver a therapeutic to the eye through a distal end of a delivery mechanism. A system control is configured to determine a position of the distal end of the delivery mechanism and control the therapeutic delivery system according to at least the determined position.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: May 7, 2019
    Assignee: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Sunil K. Srivastava, Justis P. Ehlers, Yuankai K. Tao
  • Patent number: 9946046
    Abstract: An apparatus for selectively connecting an accessory item to a surgical microscope includes a center pivot. An adapter arm includes an adapter support having a substantially planar support body which extends laterally in an outboard direction from the center pivot and has laterally spaced inboard and outboard support regions separated by a laterally oriented centerline. The adapter arm is configured to accept at least a portion of the accessory item in a supporting relationship. An undermount adapter includes a substantially planar undermount body having laterally spaced inboard and outboard body regions separated by a laterally oriented centerline. A plurality of microscope attachment throughholes each throughhole extend through the undermount body. Each throughhole is configured to accept a fastener for securement of the undermount adapter to the surgical microscope. An arm receiver is configured to accept the adapter tongue of the adapter arm in a supporting relationship.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: April 17, 2018
    Assignee: The Cleveland Clinic Foundation
    Inventors: Justis P. Ehlers, Sunil K. Srivastava
  • Patent number: 9848770
    Abstract: A surgical imaging system is provided. The surgical imaging system includes a surgical microscope and a telecentric optical coherence tomography scanning unit configured to scan a sample through at least one optical component associated with the surgical microscope.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: December 26, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: Justis P. Ehlers, Yuankai K. Tao, Sunil K. Srivastava
  • Patent number: 9703066
    Abstract: An apparatus for selectively connecting an accessory item to a surgical microscope includes a center pivot. An adapter arm includes an adapter support having a substantially planar support body which extends laterally in an outboard direction from the center pivot and has laterally spaced inboard and outboard support regions separated by a laterally oriented centerline. The adapter arm is configured to accept at least a portion of the accessory item in a supporting relationship. An undermount adapter includes a substantially planar undermount body having laterally spaced inboard and outboard body regions separated by a laterally oriented centerline. A plurality of microscope attachment throughholes each throughhole extend through the undermount body. Each throughhole is configured to accept a fastener for securement of the undermount adapter to the surgical microscope. An arm receiver is configured to accept the adapter tongue of the adapter arm in a supporting relationship.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: July 11, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: Justis P. Ehlers, Sunil K. Srivastava
  • Patent number: 9610010
    Abstract: One aspect of the present disclosure relates to a system that can perform an automated analysis of ocular inflammation (e.g., based on a non-contact image of the eye), which can lead to determining score for the ocular inflammation. The system can include a memory to store computer-executable instructions; and a processor that executes the computer-executable instructions to at least: receive an image of a portion of an eye taken by a non-contact imaging modality; determine a diagnostic parameter for ocular inflammation from the image of the portion of the eye; score the ocular inflammation with a continuous value based on the diagnostic parameter; and output the score to a display device.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: April 4, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: Sunil K. Srivastava, Sumit Sharma, Careen Y. Lowder
  • Publication number: 20160106583
    Abstract: Systems and methods are provided for image-guided delivery of therapeutics to an eye. An optical coherence tomography (OCT) imager is configured to produce at least one OCT image of the eye. A therapeutic delivery system is configured to deliver a therapeutic to the eye through a distal end of a delivery mechanism. A system control is configured to determine a position of the distal end of the delivery mechanism and control the therapeutic delivery system according to at least the determined position.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 21, 2016
    Inventors: Sunil K. Srivastava, Justis P. Ehlers, Yuankai K. Tao
  • Patent number: 9299139
    Abstract: Systems and methods are provided for volumetric analysis of pathologies. A segmentation component is configured to determine, for each of a series of images of a region of interest containing a pathological feature, a set of segmentation boundaries within the image representing a cross-section of the pathological feature. A mesh generation component is configured to link the sets of segmentation boundaries from adjacent images in the series of images to generate a polygonal mesh representing a volumetric reconstruction of the pathological feature. A volumetric measurement component is configured to calculate volumetric parameters from the volumetric reconstruction representing the pathological feature. A user interface is configured to provide the calculated volumetric parameters to an associated display.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: March 29, 2016
    Assignee: The Cleveland Clinic Foundation
    Inventors: Justis P. Ehlers, David Xu, Peter K. Kaiser, William J. Dupps, Sunil K. Srivastava
  • Publication number: 20160071266
    Abstract: Systems and methods are provided for automated analysis of angiographic images. An angiographic imaging system is configured to capture a first image of a region of interest, representing a first time, and a second image of a region of interest, representing a second time. A registration component is configured to register the first image to the second image. A difference component is configured to generate a difference image from the first image and the second image. A pattern recognition component is configured to assign a clinical parameter to the region of interest from the difference image and at least one of the first image and the second image.
    Type: Application
    Filed: September 8, 2015
    Publication date: March 10, 2016
    Inventors: Sunil K. Srivastava, Justis P. Ehlers
  • Publication number: 20160058280
    Abstract: One aspect of the present disclosure relates to a system that can perform an automated analysis of ocular inflammation (e.g., based on a non-contact image of the eye), which can lead to determining score for the ocular inflammation. The system can include a memory to store computer-executable instructions; and a processor that executes the computer-executable instructions to at least: receive an image of a portion of an eye taken by a non-contact imaging modality; determine a diagnostic parameter for ocular inflammation from the image of the portion of the eye; score the ocular inflammation with a continuous value based on the diagnostic parameter; and output the score to a display device.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 3, 2016
    Inventors: Sunil K. Srivastava, Sumit Sharma, Careen Y. Lowder
  • Publication number: 20150055093
    Abstract: A surgical imaging system is provided. The surgical imaging system includes a surgical microscope and a telecentric optical coherence tomography scanning unit configured to scan a sample through at least one optical component associated with the surgical microscope.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 26, 2015
    Inventors: Justis P. Ehlers, Yuankai K. Tao, Sunil K. Srivastava
  • Publication number: 20140221822
    Abstract: Systems and methods are provided for tracking a depth of a surgical instrument in an optical coherence tomography (OCT) guided surgical procedure. An OCT device is configured to image a region of interest to provide OCT data. A scan processor is configured to determine a relative position of the instrument and a target within the region of interest from at least the OCT data, where the instrument is one of in front of the target, within the target, or below the target. A feedback element is configured to communicate the relative position of the instrument and the target to a user in a human comprehensible form.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Justis P. Ehlers, Sunil K. Srivastava, Yuankai Tao
  • Publication number: 20140119624
    Abstract: Systems and methods are provided for volumetric analysis of pathologies. A segmentation component is configured to determine, for each of a series of images of a region of interest containing a pathological feature, a set of segmentation boundaries within the image representing a cross-section of the pathological feature. A mesh generation component is configured to link the sets of segmentation boundaries from adjacent images in the series of images to generate a polygonal mesh representing a volumetric reconstruction of the pathological feature. A volumetric measurement component is configured to calculate volumetric parameters from the volumetric reconstruction representing the pathological feature. A user interface is configured to provide the calculated volumetric parameters to an associated display.
    Type: Application
    Filed: March 26, 2013
    Publication date: May 1, 2014
    Applicant: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Justis P. Ehlers, David Xu, Peter K. Kaiser, William J. Dupps, Sunil K. Srivastava
  • Publication number: 20140085714
    Abstract: An apparatus for selectively connecting an accessory item to a surgical microscope includes a center pivot. An adapter arm includes an adapter support having a substantially planar support body which extends laterally in an outboard direction from the center pivot and has laterally spaced inboard and outboard support regions separated by a laterally oriented centerline. The adapter arm is configured to accept at least a portion of the accessory item in a supporting relationship. An undermount adapter includes a substantially planar undermount body having laterally spaced inboard and outboard body regions separated by a laterally oriented centerline. A plurality of microscope attachment throughholes each throughhole extend through the undermount body. Each throughhole is configured to accept a fastener for securement of the undermount adapter to the surgical microscope. An arm receiver is configured to accept the adapter tongue of the adapter arm in a supporting relationship.
    Type: Application
    Filed: September 27, 2013
    Publication date: March 27, 2014
    Applicant: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Justis P. Ehlers, Sunil K. Srivastava
  • Publication number: 20130296694
    Abstract: Assemblies are provided for use as surgical instruments in optical coherence tomography (OCT) assisted surgical procedures. Each assembly includes a working assembly, formed from a material selected for desirable optical properties or modified to increase the visibility of the material in an OCT scan, and a handle attached to the working assembly.
    Type: Application
    Filed: May 6, 2013
    Publication date: November 7, 2013
    Applicant: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Justis P. Ehlers, Sunil K. Srivastava, Yuankai Tao
  • Patent number: 8289839
    Abstract: In one embodiment, an apparatus includes a physical port and a plurality of logical sub-interfaces under the physical port. The physical port and the logical sub-interfaces are configured as a Bidirectional Forwarding Detection (BFD) neighbor group. The physical port being configured to run BFD sessions to detect failures at a first rate that is substantially faster as compared to a second rate of BFD sessions to detect failures on the logical sub-interfaces. The physical port notifies the logical sub-interfaces of a BFD failure at the physical port, with the logical sub-interfaces shutting down responsive to the notification.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: October 16, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Puneet Gupta, Sunil K. Srivastava, David Ward, Reshad Rahman, David Toscano
  • Patent number: 8191403
    Abstract: The disclosure presents an apparatus and method for measuring viscosity of a lubricating oil. The apparatus has a piezo-resistive cantilever sensor for sensing a first oil viscosity parameter. The sensor has a cantilever having a pressure receiving portion for receiving pressure exerted by the lubricating oil as the lubricating oil comes into contact with the pressure receiving portion. The cantilever also has first and second resistive portions in electrical communication with a first lead and a second lead, respectively, which are in electrical communication with an electrical circuit amplification element, for creating an output signal indicative of a change in the resistive characteristics of the first and second resistive portions of the cantilever as the lubricating oil comes into contact with the pressure receiving portion. The output signal can be used for determining oil viscosity.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: June 5, 2012
    Assignee: Richmond Chemical Corporation
    Inventors: Arjan Quist, Ratnesh Lal, Gregory P. Liesen, Sunil K. Srivastava
  • Patent number: 7830896
    Abstract: A router for routing data from a client through load-balancing nodes to a selected load-balanced server among a plurality of servers in a network involves: receiving, at a last load balancing node associated with a selected server among the plurality of servers, a first packet of a server reply to a request from the client; storing identifiers of ingress interfaces on which the packet arrives, in a send path list for server load balancing, as the first packet of the server reply is routed from the last load balancing node to the client using hop-by-hop decisions; receiving subsequent packets of the client request; and forwarding the subsequent packets to the selected server only on a route that is defined by the send path list and without hop-by-hop routing decisions. Packet flows are routed from the same client to the same server without hop-by-hop routing decisions or repeated load-balancing decisions.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: November 9, 2010
    Assignee: Cisco Technology, Inc.
    Inventor: Sunil K. Srivastava