Patents by Inventor Keith Marshall

Keith Marshall 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: 20220370165
    Abstract: A console for controlling a robotic manipulator having an end effector, the console comprising: a hand controller connected to a gimbal assembly; and an articulated linkage connected at its proximal end to a rigid support structure, and at its distal end to the gimbal assembly. The gimbal assembly comprises only three degrees of freedom provided by only three joints, a first joint of the three joints permitting the gimbal assembly to rotate relative to the distal end of the articulated linkage about a first axis. The articulated linkage and gimbal assembly are arranged such that in every configuration of the articulated linkage and gimbal assembly, the first axis has the same orientation relative to the support structure. The articulated linkage has a parallelogram profile thereby mechanically constraining the first axis to have the same orientation relative to the support structure in every configuration of the articulated linkage.
    Type: Application
    Filed: October 21, 2020
    Publication date: November 24, 2022
    Inventors: Rebecca Anne Cuthbertson, Luke David Ronald Hares, Keith Marshall
  • Patent number: 11499201
    Abstract: A process for the production of direct reduced iron (DRI), with or without carbon, using hydrogen, where the hydrogen is produced utilizing water generated internally from the process. The process is characterized by containing either one or two gas loops, one for affecting the reduction of the oxide and another for affecting the carburization of the DRI. The primary loop responsible for reduction recirculates used gas from the shaft furnace in a loop including a dry dedusting step, an oxygen removal step to generate the hydrogen, and a connection to the shaft furnace for reduction. In the absence of a second loop, this loop, in conjunction with natural gas addition, can be used to deposit carbon. A secondary carburizing loop installed downstream of the shaft furnace can more finely control carbon addition. This loop includes a reactor vessel, a dedusting step, and a gas separation unit.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: November 15, 2022
    Assignee: Midrex Technologies, Inc.
    Inventors: Todd Michael Astoria, Gregory Darel Hughes, Enrique Jose Cintron, Keith Marshall Bastow-Cox
  • Publication number: 20220354599
    Abstract: A surgical robot arm extending between a base and a terminal link, the terminal link connected to an adjacent link in the surgical robot arm by a joint which permits the terminal link to rotate about a longitudinal axis of the terminal link, the terminal link comprising: a drive assembly having a first drive assembly interface element for driving a first instrument interface element of a robotic surgical instrument when the surgical robot arm engages the robotic surgical instrument, the first drive assembly interface element engageable with the first instrument interface element on the longitudinal axis of the terminal link, and the first drive assembly interface element being linearly displaceable along the longitudinal axis of the terminal link so as to drive the first instrument interface element along the longitudinal axis of the terminal link.
    Type: Application
    Filed: July 25, 2022
    Publication date: November 10, 2022
    Inventors: Keith Marshall, Luke David Ronald Hares, Ben Robert Chaplin, Nikki Phoolchund
  • Patent number: 11484298
    Abstract: A robotic surgical instrument comprising a shaft and end effector element connected by an articulation. The articulation comprises a first joint driveable by a first pair of driving elements. The first joint permits the end effector element to rotate about a first axis transverse to a longitudinal axis of the shaft, the rotation of the end effector element about the first axis bounded by an extreme rotation angle relative to the longitudinal axis. A second joint is driveable by a second pair of driving elements. A pulley arrangement constrains the second pair of driving elements, and comprises a first set of pulleys rotatable about the first axis, and a second set of pulleys located relative to the first set of pulleys such that at the extreme rotation angle the second pair of driving elements is retained in contact with both the first and second sets of pulleys.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: November 1, 2022
    Assignee: CMR Surgical Limited
    Inventors: Ben Robert Chaplin, Keith Marshall, Luke David Ronald Hares
  • Publication number: 20220331021
    Abstract: A drive transfer element for transferring drive between a surgical robot arm and a surgical instrument, the drive transfer element comprising a drive transfer element recess being releasably engageable with an interface protrusion; and a drive transfer element protrusion being releasably engageable with an interface recess; the drive transfer element protrusion comprising a cavity in communication with the drive transfer element recess so as to enable the interface protrusion engageable with the drive transfer element recess to project into the cavity.
    Type: Application
    Filed: May 24, 2022
    Publication date: October 20, 2022
    Inventors: Ben Robert Chaplin, James Oliver Grant, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Publication number: 20220331033
    Abstract: A master-slave system that includes a first manipulator supporting a first end effector; a second manipulator supporting a second end effector; an input device configured to concurrently receive from a hand of an operator a first movement command to effect a desired movement of the first end effector and a second movement command to effect a desired movement of the second end effector; and a processor configured to determine a desired movement of the first and the second end effectors in response to the first and second movement commands received from the input device respectively.
    Type: Application
    Filed: July 7, 2022
    Publication date: October 20, 2022
    Inventors: Keith Marshall, Rebecca Anne Cuthbertson, Gordon Thomas Deane
  • Publication number: 20220331020
    Abstract: A drive transfer element for transferring drive between a surgical robot arm and a surgical instrument, the drive transfer element comprising a drive transfer element recess being releasably engageable with an interface protrusion; and a drive transfer element protrusion being releasably engageable with an interface recess; the drive transfer element protrusion comprising a cavity in communication with the drive transfer element recess so as to enable the interface protrusion engageable with the drive transfer element recess to project into the cavity.
    Type: Application
    Filed: May 24, 2022
    Publication date: October 20, 2022
    Inventors: Ben Robert Chaplin, James Oliver Grant, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Publication number: 20220331032
    Abstract: A master-slave system that includes a first manipulator supporting a first end effector; a second manipulator supporting a second end effector; an input device configured to concurrently receive from a hand of an operator a first movement command to effect a desired movement of the first end effector and a second movement command to effect a desired movement of the second end effector; and a processor configured to determine a desired movement of the first and the second end effectors in response to the first and second movement commands received from the input device respectively.
    Type: Application
    Filed: July 7, 2022
    Publication date: October 20, 2022
    Inventors: Keith Marshall, Rebecca Anne Cuthbertson, Gordon Thomas Deane
  • Patent number: 11432887
    Abstract: A surgical robot arm extending between a base and a terminal link, the terminal link connected to an adjacent link in the surgical robot arm by a joint which permits the terminal link to rotate about a longitudinal axis of the terminal link, the terminal link comprising: a drive assembly having a first drive assembly interface element for driving a first instrument interface element of a robotic surgical instrument when the surgical robot arm engages the robotic surgical instrument, the first drive assembly interface element engageable with the first instrument interface element on the longitudinal axis of the terminal link, and the first drive assembly interface element being linearly displaceable along the longitudinal axis of the terminal link so as to drive the first instrument interface element along the longitudinal axis of the terminal link.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 6, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Keith Marshall, Luke David Ronald Hares, Ben Robert Chaplin, Nikki Priyam Su-Ling Phoolchund
  • Patent number: 11406463
    Abstract: A master-slave system that includes a first manipulator supporting a first end effector; a second manipulator supporting a second end effector; an input device configured to concurrently receive from a hand of an operator a first movement command to effect a desired movement of the first end effector and a second movement command to effect a desired movement of the second end effector; and a processor configured to determine a desired movement of the first and the second end effectors in response to the first and second movement commands received from the input device respectively.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: August 9, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Keith Marshall, Rebecca Anne Cuthbertson, Gordon Thomas Deane
  • Publication number: 20220244079
    Abstract: A device for sensing the relative rotary position of first and second parts about a rotation axis, the device comprising a follower constrained to move on a first track fast with the first part and on a second track fast with the second part, the first track being linear and the second track comprising a plurality of circular arcs and at least one transition section connecting one of the circular arcs to another, the tracks being arranged so as to convert relative rotation of the parts into linear motion of the follower, wherein the second track is generally spiral, each circular arc is of constant radius about the rotation axis and the first track is perpendicular to the rotation axis.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 4, 2022
    Inventors: Keith Marshall, Christopher James Roach, Paul Christopher Roberts, Steven James Randle
  • Publication number: 20220226053
    Abstract: An interface structure for detachably interfacing a surgical robot arm to a surgical instrument, the interface structure comprising a main body; and a drive transfer element comprising a first portion and a second portion, the first portion being releasably engageable with a portion of the surgical robot arm and the second portion being releasably engageable with a portion of the surgical instrument; the drive transfer element being movable relative to the main body so as to enable transfer of drive between the surgical robot arm and the surgical instrument.
    Type: Application
    Filed: March 10, 2022
    Publication date: July 21, 2022
    Inventors: Ben Robert Chaplin, James Oliver Grant, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Patent number: 11382706
    Abstract: A robotic surgical instrument, comprising: a shaft; an articulation at a distal end of the shaft for articulating an end effector, the articulation being driveable by a pair of driving elements; and an instrument interface at a proximal end of the shaft, the instrument interface comprising: a chassis; an instrument interface element slideable along a guide bar for driving the pair of driving elements, wherein the pair of driving elements are fast with respect to the interface element so that a displacement of the instrument interface element with respect to the guide bar is transferred to the pair of driving elements; the chassis comprising a support element configured to interface the guide bar along at least a portion of its length; and a securing element for retaining the guide bar against the support element to thereby secure the guide bar to the chassis.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 12, 2022
    Assignee: CMR Surgical Limited
    Inventor: Keith Marshall
  • Patent number: 11382705
    Abstract: A robotic surgical instrument comprising: a shaft; an articulation at a distal end of the shaft configured to articulate an end effector, the articulation driveable by a pair of driving elements; and an instrument interface at a proximal end of the shaft, the instrument interface comprising: an instrument interface element configured to drive the pair of driving elements, the instrument interface element displaceable over a displacement range, the pair of driving elements fast with the instrument interface element such that a displacement of the instrument interface element is transferred to the pair of driving elements; a tensioning mechanism configured to tension the pair of driving elements; and an alignment mechanism configured to set the displacement position of the instrument interface element to a predetermined alignment position when the end effector has a predetermined configuration, the alignment mechanism being independent of the tensioning mechanism.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: July 12, 2022
    Assignee: CMR Surgical Limited
    Inventors: Ben Robert Chaplin, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Rebecca Anne Cuthbertson
  • Patent number: 11369441
    Abstract: A drive transfer element for transferring drive between a surgical robot arm and a surgical instrument, the drive transfer element comprising a drive transfer element recess being releasably engageable with an interface protrusion; and a drive transfer element protrusion being releasably engageable with an interface recess; the drive transfer element protrusion comprising a cavity in communication with the drive transfer element recess so as to enable the interface protrusion engageable with the drive transfer element recess to project into the cavity.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 28, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Ben Robert Chaplin, James Oliver Grant, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Patent number: 11333531
    Abstract: A device for sensing the relative rotary position of first and second parts about a rotation axis, the device comprising a follower constrained to move on a first track fast with the first part and on a second track fast with the second part, the first track being linear and the second track comprising a plurality of circular arcs and at least one transition section connecting one of the circular arcs to another, the tracks being arranged so as to convert relative rotation of the parts into linear motion of the follower, wherein the second track is generally spiral, each circular arc is of constant radius about the rotation axis and the first track is perpendicular to the rotation axis.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: May 17, 2022
    Assignee: CMR Surgical Limited
    Inventors: Keith Marshall, Christopher James Roach, Paul Christopher Roberts, Steven James Randle
  • Patent number: 11304765
    Abstract: An interface structure for detachably interfacing a surgical robot arm to a surgical instrument, the interface structure comprising a main body; and a drive transfer element comprising a first portion and a second portion, the first portion being releasably engageable with a portion of the surgical robot arm and the second portion being releasably engageable with a portion of the surgical instrument; the drive transfer element being movable relative to the main body so as to enable transfer of drive between the surgical robot arm and the surgical instrument.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: April 19, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Ben Robert Chaplin, James Oliver Grant, Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Patent number: 11291516
    Abstract: A surgical robotic component comprising an articulated terminal portion, the terminal portion comprising: a distal segment having an attachment connected thereto, an intermediate segment, and a basal segment whereby the terminal portion is attached to the remainder of the surgical robotic component. The terminal portion further comprises a first articulation between the distal segment and the intermediate segment, the first articulation permitting relative rotation of the distal segment and the intermediate segment about a first axis, and a second articulation between the intermediate segment and the basal segment, the second articulation permitting relative rotation of the intermediate segment and the basal segment about a second axis.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 5, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Luke David Ronald Hares, Keith Marshall
  • Patent number: 11241289
    Abstract: A packaging insert configured to engage a portion of a surgical drape for locating the drape on a surgical robot arm, the drape comprising a drive transfer element for transferring drive between the robot arm and a surgical instrument, the packaging insert comprising a body and a retention portion engageable with the drive transfer element for retaining the drive transfer element in a desired position.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: February 8, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Keith Marshall, Nikki Priyam Su-Ling Phoolchund, Thomas Bates Jackson
  • Patent number: D956240
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: June 28, 2022
    Assignee: CMR Surgical Limited
    Inventors: Martin McBrien, James Oliver Grant, Keith Marshall