Patents by Inventor Steven James Randles

Steven James Randles 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: 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
  • 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
  • Publication number: 20220087757
    Abstract: A surgical robot comprising an articulated arm, the arm having a terminal portion comprising: a distal segment having an attachment for a surgical instrument; an intermediate segment; and a basal segment whereby the terminal portion is attached to the remainder of the arm; 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; wherein: the intermediate segment comprises a third articulation permitting relative rotation of the distal segment and the basal segment about third and fourth axes; and the first, second and third articulations are arranged such that in at least one configuration of the third articulation the first and second axes are parallel and the thir
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Applicant: CMR SURGICAL LIMITED
    Inventors: Luke David Ronald Hares, Steven James Randle
  • Patent number: 11267141
    Abstract: A surgical robotic component comprising an articulated terminal portion, the terminal portion comprising: a distal segment having an attachment for a surgical tool; a basal segment for attaching the terminal portion to the remainder of the surgical robotic component; and an intermediate compound joint between the distal segment and the basal segment, the intermediate compound joint permitting relative rotation of the distal segment and the basal segment about first, second and third axes; the terminal portion being arranged such that, in at least one configuration of the intermediate compound joint: (i) the axial direction of the basal segment is parallel to the axial direction of the distal segment, and (ii) the first, second and third axes are transverse to the axial directions of the basal and distal segments.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: March 8, 2022
    Assignee: CMR Surgical Limited
    Inventor: Steven James Randle
  • Patent number: 11224488
    Abstract: A surgical robot comprising an articulated arm, the arm having a terminal portion comprising: a distal segment having an attachment for a surgical instrument; an intermediate segment; and a basal segment whereby the terminal portion is attached to the remainder of the arm; 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; wherein: the intermediate segment comprises a third articulation permitting relative rotation of the distal segment and the basal segment about third and fourth axes; and the first, second and third articulations are arranged such that in at least one configuration of the third articulation the first and second axes are parallel and the thir
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: January 18, 2022
    Assignee: CMR SURGICAL LIMITED
    Inventors: Luke David Ronald Hares, Steven James Randle
  • Publication number: 20210369362
    Abstract: A robotic surgical instrument comprising a shaft, an articulated section and a drive mechanism. The articulated section extends from the shaft and terminates at its distal end in a tip. The tip has an attachment for an end effector. The drive mechanism drives the articulated section via flexible driving elements thereby altering the angular orientation of the tip relative to the shaft. The drive mechanism is controlled so as to always fully compress the articulated section along at least one extent by which the articulated section connects the tip and the shaft whilst driving the articulated section from any one configuration to any other configuration. The drive mechanism constrains movement of the articulated section so as to permit the tip to move with two degrees of rotational freedom and no degrees of translational freedom relative to the shaft.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Inventors: Steven James Randle, Luke David Ronald Hares, Keith Marshall
  • Patent number: 11154371
    Abstract: A robot arm comprising a joint mechanism for articulating one limb of the arm relative to another limb of the arm about two non-parallel rotation axes, the mechanism comprising: an intermediate carrier attached to a first one of the limbs by a first revolute joint having a first rotation axis and to a second one of the limbs by a second revolute joint having a second rotation axis; a first drive gear disposed about the first rotation axis, the first drive gear being fast with the carrier; a second drive gear disposed about the second rotation axis, the second drive gear being fast with the second one of the limbs; a first drive shaft for driving the first drive gear to rotate about the first rotation axis, the first drive shaft extending along the first one of the limbs and having a first shaft gear thereon, the first shaft gear being arranged to engage the first drive gear; a second drive shaft for driving the second drive gear to rotate about the second rotation axis, the second drive shaft extending along
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 26, 2021
    Assignee: CMR SURGICAL LIMITED
    Inventors: Thomas Bates Jackson, Luke David Ronald Hares, Keith Marshall, Steven James Randle
  • Patent number: 11141228
    Abstract: A robot arm comprising a joint mechanism for articulating one limb relative to another limb about two non-parallel rotation axes, the mechanism comprising: an intermediate carrier attached to a first one of the limbs by a first revolute joint having a first rotation axis and to a second one of the limbs by a second revolute joint having a second rotation axis; a first drive gear disposed about the first rotation axis and fast with the carrier, whereby rotation of the carrier relative to the first limb about the first rotation axis can be driven; a second drive gear disposed about the second rotation axis and fast with the second one of the limbs, whereby rotation of the second one of the limbs about the second rotation axis relative to the carrier can be driven; at least one of the first and second drive gears being a sector gear.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: October 12, 2021
    Assignee: CMR SURGICAL LIMITED
    Inventors: Keith Marshall, Luke David Ronald Hares, Thomas Bates Jackson, Steven James Randle
  • Patent number: 11116588
    Abstract: A robotic surgical instrument comprising a shaft, an articulated section and a drive mechanism. The articulated section extends from the shaft and terminates at its distal end in a tip. The tip has an attachment for an end effector. The drive mechanism drives the articulated section via flexible driving elements thereby altering the angular orientation of the tip relative to the shaft. The drive mechanism is controlled so as to always fully compress the articulated section along at least one extent by which the articulated section connects the tip and the shaft whilst driving the articulated section from any one configuration to any other configuration. The drive mechanism constrains movement of the articulated section so as to permit the tip to move with two degrees of rotational freedom and no degrees of translational freedom relative to the shaft.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: September 14, 2021
    Assignee: CMR Surgical Limited
    Inventors: Steven James Randle, Luke David Ronald Hares, Keith Marshall
  • Patent number: 11007025
    Abstract: A robot comprising: a base; a flexible arm extending from the base having: a plurality of joints positioned throughout the arm, a plurality of drivers arranged to drive the joints, and an attachment structure for attaching a tool to the arm; and a control unit configured to control the drivers and to receive inputs from sensors, where the control unit (i) controls the drivers to permit the arm to be reconfigured by the action of an external force applied to the arm to cause the tool to be retracted from a port; and (ii) on receiving sensor input indicating that the arm has been reconfigured to cause the tool to be retracted from the port, controls the drivers to reconfigure the arm so as to agitate the tool transverse to a longitudinal axis of the tool.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: May 18, 2021
    Assignee: CMR SURGICAL LIMITED
    Inventor: Steven James Randle
  • Publication number: 20200315719
    Abstract: A surgical robot comprising a surgical robot arm and a surgical instrument. The surgical robot arm terminates at its distal end in a drive assembly comprising a first drive interface element. The surgical instrument comprises a shaft, an articulation attached to the distal end of the shaft, and a driving mechanism at the proximal end of the shaft. The articulation is for articulating an end effector, the articulation driveable by at least a first driving element and a second driving element. The driving mechanism comprises a first instrument interface element to which the first driving element is connected and a second instrument interface element to which the second driving element is connected.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Applicant: CMR Surgical Limited
    Inventors: Keith Marshall, Steven James Randle
  • Patent number: 10792111
    Abstract: A robot comprising an arm extending between a base and an attachment for an end effector, the arm comprising: a first arm part; a second arm part distal of the first arm part; and a joint whereby the first and second arm parts are coupled together, the joint permitting the first and second arm parts to rotate relative to each other about at least two mutually offset axes; a control rod attached to the second part of the arm at a location spaced from the first and second axes, the control rod extending distally of that location along the first arm part; and a drive mechanism for driving the control rod to move relative to the first arm part and thereby alter the attitude of the second arm part relative to the first arm part.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: October 6, 2020
    Assignee: CMR SURGICAL LIMITED
    Inventors: Luke David Ronald Hares, Steven James Randle
  • Publication number: 20200281671
    Abstract: A robot comprising: a base; a flexible arm extending from the base and having: a plurality of joints whereby the configuration of the arm can be altered, a plurality of drivers arranged to drive the joints to move, and an attachment structure for attaching a tool to the arm; and a control unit configured to control the drivers and to receive inputs from sensors, and operable in a mode in which, whilst a tool is attached to the attachment structure and captive in a port, it: (i) controls the drivers to permit the arm to be reconfigured by the action of an external force applied to the arm so as to cause the tool to be retracted from the port along a longitudinal axis of the tool; and (ii) on receiving sensor input indicating that the arm has been reconfigured so as to cause the tool to be retracted from the port along a longitudinal axis of the tool, controls the drivers to reconfigure the arm so as to agitate the tool transverse to the longitudinal axis of the tool.
    Type: Application
    Filed: May 21, 2020
    Publication date: September 10, 2020
    Applicant: CMR Surgical Limited
    Inventor: Steven James Randle
  • Patent number: 10722312
    Abstract: A surgical robot comprising a surgical robot arm and a surgical instrument. The surgical robot arm terminates at its distal end in a drive assembly comprising a first drive interface element. The surgical instrument comprises a shaft, an articulation attached to the distal end of the shaft, and a driving mechanism at the proximal end of the shaft. The articulation is for articulating an end effector, the articulation driveable by at least a first driving element and a second driving element. The driving mechanism comprises a first instrument interface element to which the first driving element is connected and a second instrument interface element to which the second driving element is connected.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 28, 2020
    Assignee: CMR Surgical Limited
    Inventors: Keith Marshall, Steven James Randle
  • Publication number: 20200232825
    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 3, 2020
    Publication date: July 23, 2020
    Inventors: Keith Marshall, Christopher James Roach, Paul Christopher Roberts, Steven James Randle
  • Publication number: 20200129253
    Abstract: A robot arm comprising a joint mechanism for articulating one limb of the arm relative to another limb of the arm about two non-parallel rotation axes, the mechanism comprising: an intermediate carrier attached to a first one of the limbs by a first revolute joint having a first rotation axis and to a second one of the limbs by a second revolute joint having a second rotation axis; a first drive gear disposed about the first rotation axis, the first drive gear being fast with the carrier; a second drive gear disposed about the second rotation axis, the second drive gear being fast with the second one of the limbs; a first drive shaft for driving the first drive gear to rotate about the first rotation axis, the first drive shaft extending along the first one of the limbs and having a first shaft gear thereon, the first shaft gear being arranged to engage the first drive gear; a second drive shaft for driving the second drive gear to rotate about the second rotation axis, the second drive shaft extending along
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Inventors: Thomas Bates Jackson, Luke David Ronald Hares, Keith Marshall, Steven James Randle
  • Patent number: 10627260
    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: July 22, 2016
    Date of Patent: April 21, 2020
    Assignee: CMR Surgical Limited
    Inventors: Keith Marshall, Christopher James Roach, Paul Christopher Roberts, Steven James Randle
  • Patent number: 10531928
    Abstract: A robot arm comprising a joint mechanism for articulating one limb of the arm relative to another limb of the arm about two non-parallel rotation axes, the mechanism comprising: an intermediate carrier attached to a first one of the limbs by a first revolute joint having a first rotation axis and to a second one of the limbs by a second revolute joint having a second rotation axis; a first drive gear disposed about the first rotation axis, the first drive gear being fast with the carrier; a second drive gear disposed about the second rotation axis, the second drive gear being fast with the second one of the limbs; a first drive shaft for driving the first drive gear to rotate about the first rotation axis, the first drive shaft extending along the first one of the limbs and having a first shaft gear thereon, the first shaft gear being arranged to engage the first drive gear; a second drive shaft for driving the second drive gear to rotate about the second rotation axis, the second drive shaft extending along
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: January 14, 2020
    Assignee: CMR SURGICAL LIMITED
    Inventors: Thomas Bates Jackson, Luke David Ronald Hares, Keith Marshall, Steven James Randle
  • Patent number: 10463436
    Abstract: A robot arm comprising a joint mechanism for articulating one limb of the arm relative to another limb of the arm about two non-parallel rotation axes, the mechanism comprising: an intermediate carrier attached to a first one of the limbs by a first revolute joint having a first rotation axis and to a second one of the limbs by a second revolute joint having a second rotation axis; a first drive gear disposed about the first rotation axis, the first drive gear being fast with the carrier; a second drive gear disposed about the second rotation axis, the second drive gear being fast with the second one of the limbs; a first drive shaft for driving the first drive gear to rotate about the first rotation axis, the first drive shaft extending along the first one of the limbs and having a first shaft gear thereon, the first shaft gear being arranged to engage the first drive gear; a second drive shaft for driving the second drive gear to rotate about the second rotation axis, the second drive shaft extending along
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: November 5, 2019
    Assignee: CMR SURGICAL LIMITED
    Inventors: Thomas Bates Jackson, Luke David Ronald Hares, Keith Marshall, Steven James Randle
  • Patent number: 10456206
    Abstract: A robotic instrument comprising an arm extending between a robot arm connection and an attachment for an end effector, the arm comprising: a first arm part; a second arm part distal of the first arm part; and a joint whereby the first and second arm parts are coupled together, the joint permitting the first and second arm parts to rotate relative to each other about at least two mutually offset axes; a control rod attached to the second part of the arm at a location spaced from the first and second axes, the control rod extending distally of that location along the first arm part; and a drive mechanism for driving the control rod to move relative to the first arm part and thereby alter the attitude of the second arm part relative to the first arm part.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: October 29, 2019
    Assignee: CMR SURGICAL LIMITED
    Inventors: Luke David Ronald Hares, Steven James Randle