Patents by Inventor Joel Zuhars

Joel Zuhars 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: 11986255
    Abstract: A method for registering one or more surfaces associated with a bone for implant revision procedures includes a digitizer used to digitize surface points on remaining cement, bone surfaces, or both. The bone is adapted to hold a primary implant and from which the primary implant was removed. The position of the one or more surfaces associated with bone is registered by computing at least one of: a generic set of one or more planes using the surface points or a best match between a known implant geometry and the surface points. A computer-assisted surgical system is also provided to execute the method.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: May 21, 2024
    Assignee: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Michael E. Hoppe
  • Patent number: 11986246
    Abstract: A method and system are provided to determine an optimal placement with respect to position and orientation for one or more bones in a workspace of a robot to improve robotic cutting and maximize the robot workspace during a robotic surgical procedure. The method is additionally useful to aid a user in positioning and orienting the bones in the operating room at the determined position and orientation.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: May 21, 2024
    Assignee: Think Surgical, Inc.
    Inventors: Jay Roldan, Min Yang Jung, Feimo Shen, Muhammad Afnan, Barry Voorhees, Micah Forstein, CJ Geering, Koteswara Ruvva, Joel Zuhars
  • Patent number: 11872005
    Abstract: A system and process is provided for dynamically positioning or repositioning a robot in a surgical context based on workspace and task requirements, manipulator requirements, or user preferences to execute a surgical plan. The system and method accurately determines and indicates an optimal position for a robot with respect to a patient's anatomy before or during a surgical procedure. Optimal positions for a robot are intuitively indicated to a user. surgical procedures can illustratively include surgery to the knee joint, hip joint, spine, shoulder joint, elbow joint, ankle joint, jaw, a tumor site, joints of the hand or foot, and other appropriate surgical sites.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: January 16, 2024
    Assignee: Think Surgical Inc.
    Inventors: Saleh Tabandeh, Joel Zuhars, Daniel Patrick Bonny, Timothy Pack, Randall Hanson, Michael Hoppe, Nathan A. Netravali
  • Patent number: 11812974
    Abstract: A computer-assisted surgery system for guiding alterations to a bone, comprises a trackable member secured to the bone. The trackable member has a first inertial sensor unit producing orientation-based data. A positioning block is secured to the bone, and is adjustable once the positioning block is secured to the bone to be used to guide tools in altering the bone. The positioning block has a second inertial sensor unit producing orientation-based data. A processing system providing an orientation reference associating the bone to the trackable member comprises a signal interpreter for determining an orientation of the trackable member and of the positioning block. A parameter calculator calculates alteration parameters related to an actual orientation of the positioning block with respect to the bone.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: November 14, 2023
    Assignee: ORTHOSOFT ULC
    Inventors: Louis-Philippe Amiot, Alain Richard, Yannick Boutin, Joel Zuhars, Yonik Breton, Karine Duval, Herbert Andre Jansen, Benoit Pelletier, Catherine Proulx, Myriam Valin
  • Publication number: 20230355317
    Abstract: A system for confirming registration of a bone involved in a joint replacement procedure is provided. The system includes a three-dimensional (3-D) bone model of the bone registered to a bone location, a visible light camera, and a display. The visible light camera captures images of the bone in the camera’s field-of-view (FOV). The display is configured to display the captured images of the FOV and an image of the 3-D bone model, where the displayed location of the image of the 3-D bone model corresponds to the location of the 3-D bone model registered to the bone location. The registration may be confirmed if the displayed location of the image of the bone as captured by the visible light camera corresponds to the displayed location of the 3-D bone model.
    Type: Application
    Filed: July 14, 2023
    Publication date: November 9, 2023
    Applicant: THINK SURGICAL, INC.
    Inventors: Joel Zuhars, Daniel P. Bonny, Saleh Tabandeh
  • Patent number: 11744719
    Abstract: A system and process for performing orthopedic surgery is provided that uses a tibial trial system in total knee arthroplasty for assessing optimal internal-external rotation and posterior tibial slope, and for measuring the rotation of a tibial trial throughout flexion-extension to determine and mark the best position for the final tibial component. The tibial trial system determines the internal-external location on a patient specific basis with improved component placement well within the present manual methods. One particular advantage to the tibial trial system is to assess the natural internal-external rotation that the tibial component will experience relative to the femoral component during flexion-extension as opposed to simply recording and balancing forces on a static tibial trial. The invention disclosed herein may also be adapted to be used with a computer assisted surgical device. Such surgical devices include active, semi-active, and haptic devices as well as articulating drill and saw systems.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: September 5, 2023
    Assignee: Think Surgical, Inc.
    Inventors: Daniel Patrick Bonny, Joel Zuhars
  • Patent number: 11717353
    Abstract: A process for confirming registration of bones involved in a joint replacement procedure is provided that includes a three dimensional (3-D) models of the bones being generated. The bones are tracked with a tracking device attached to each of the bones to allow 6-degrees of freedom (DOF) tracking during the joint replacement procedure. The 3-D models to the bones are registered and the bones having the tracking device are moved. A corresponding motion in the 3-D models with the moving of the bones is then observed. The registration of the 3-D models to the bone when the observations of the 3-D models move in correspondence with the actual bones is then confirmed or an alarm when an algorithm detects the 3-D bone models move unexpectedly during the movement of the bones. A system for confirming registration of bones involved in the joint replacement procedure is also provided.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: August 8, 2023
    Assignee: Think Surgical, Inc.
    Inventors: Joel Zuhars, Daniel P. Bonny, Saleh Tabandeh
  • Publication number: 20230240761
    Abstract: A system for determining an orientation of a tool axis with respect to a coordinate frame of a robot is described herein. The robot includes a tool holder and a plurality of fiducial markers for defining a first coordinate frame of the robot. A calibration device is provided having a second fiducial marker for a tracking system to track positions and configured to couple to the tool holder; and rotate relative to the tool holder when coupled to the tool holder. A computer having a processor is configured to fit a circle or arc to recorded positions of the calibration device. The recorded positions of the calibration device are recorded when coupled to the tool holder, is rotated relative to the tool holder. A vector normal to the fitted circle or arc is calculated to determine an orientation of the tool axis. A method of use is also provided.
    Type: Application
    Filed: April 10, 2023
    Publication date: August 3, 2023
    Applicant: Think Surgical, Inc.
    Inventors: Daniel Patrick Bonny, Joel Zuhars, Nathan A. Netravali
  • Patent number: 11653983
    Abstract: A calibration device is provided having a body with an exterior surface configured for placement about a tool such that the body rotates about a tool axis. One or more fiducial marker is positioned on the exterior surface and in communication with a tracking system. A fixed fiducial marker array is provided that is also in communication with the tracking system. A calibration tool defines the tool axis relative to the fiducial marker array. A surgical system is also provided with a tracking module that calculates a center point of the rotation or a normal vector to the circular path to define a tool axis orientation. A method of using the surgical system and defining a tool axis relative to a fiducial marker array is provided. A system for defining a robot link orientation or tracking a tool a medical procedure and a fiducial marker array are provided.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: May 23, 2023
    Assignee: Think Surgical, Inc.
    Inventors: Daniel Patrick Bonny, Joel Zuhars, Nathan A. Netravali
  • Publication number: 20230098080
    Abstract: A method and system to align a pin or drill a tunnel along a single line in space with a two degree of freedom (2-DOF) surgical device in a patient is provided. A plane is defined relative to a desired location for an implant or tunnel on a bone, where the implant or tunnel has an axis. An end-effector of the 2-DOF surgical device is aligned coincident with the plane, and the 2-DOF surgical device is moved side-to until a first indicator signals when the end-effector aligns with an entry point for the desired location for the implant or tunnel on the bone. A tip of the end-effector is anchored into the bone at the entry point; and the 2-DOF surgical device is rotated about the anchored tip until a second indicator signals when the end-effector aligns with the axis of the implant or tunnel at the desired location.
    Type: Application
    Filed: December 2, 2022
    Publication date: March 30, 2023
    Applicant: Think Surgical, Inc.
    Inventors: Joel Zuhars, Stan G. Shalayev
  • Publication number: 20220338886
    Abstract: A method and system are provided to assist in positioning the field-of-view (FOV) of an optical tracking system during a computer-assisted surgical procedure. The method includes displaying a view from a visible light detector on a display, and generating an outline as an overlay on the display of a FOV of two or more optical tracking detectors on the displayed view from the visible light detector. A user then positions at least one of: a) the two or more optical tracking detectors, or b) a tracked object based on the displayed view from the visible light detector and the generated outline.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 27, 2022
    Applicant: THINK SURGICAL, INC.
    Inventors: Daniel Patrick Bonny, Joel Zuhars
  • Publication number: 20220323162
    Abstract: A surgical device is provided includes a hand-held portion with a working portion movably coupled to the hand-held portion for driving a tool. Actuators are provided for moving the working portion with each of the actuators having a travel range. An indicator notices a user when at least one of actuators is: (i) within the travel range; (ii) approaching a travel limit of the travel range; or (iii) outside the travel range. A surgical system is also provided inclusive the surgical device and a computing system configured to activate the indicator.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 13, 2022
    Applicant: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Publication number: 20220323163
    Abstract: A surgical device is provided includes a hand-held portion with a working portion movably coupled to the hand-held portion for driving a tool. Actuators are provided for moving the working portion with each of the actuators having a travel range. An indicator notices a user when at least one of actuators is: (i) within the travel range; (ii) approaching a travel limit of the travel range; or (iii) outside the travel range. A surgical system is also provided inclusive the surgical device and a computing system configured to activate the indicator.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 13, 2022
    Applicant: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Patent number: 11457980
    Abstract: Systems and methods for creating planar cuts on a bone are provided utilizing one or more cutting guides assembled to a plurality of bone pins, where the bone pins are inserted on the bone coincident with one or more virtual pin planes defined relative to one or more of the planar cuts. Alignment guides are also disclosed herein that aid in the creation of pilot holes for receiving a cutting block in a desired position and orientation (POSE). An articulating surgical device actively positions the bone pins coincident with the virtual plane to ensure the cutting guides, when assembled to the pins, aligns one or more guide slots in the desired POSE to create the planar cuts.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: October 4, 2022
    Assignee: THINK SURGICAL, INC.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Patent number: 11439411
    Abstract: A system for improved surgical cutting in the presence of surgical debris, the system comprising: a surgical cutter comprising a distal end and a proximal end, the distal end of the surgical cutter being configured to cut bone; a debris detection system mounted to the surgical cutter, the debris detection system comprising: a light source for emitting light; a receiver for receiving light emitted from the light source; and a microprocessor for determining a change in a characteristic of the light emitted by the light source and received by the receiver, and for determining the presence and/or amount of surgical debris present at a surgical site using a change in a characteristic of the light emitted by the light source and received by the receiver; and a controller for varying, based on the presence and/or amount of surgical debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) the feed rate of the surgical cutter, (iii) the direction of the surgi
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: September 13, 2022
    Assignee: THINK Surgical, Inc.
    Inventors: Micah Forstein, Joel Zuhars
  • Publication number: 20220265376
    Abstract: Systems and methods for creating cuts on a bone are provided utilizing one or more cutting guides assembled to a plurality of bone pins, where the bone pins are inserted on the bone coincident with one or more virtual pin planes defined relative to one or more of the cuts. Alignment guides are also disclosed herein that aid in the creation of pilot holes for receiving a cutting block in a desired position and orientation (POSE). An articulating surgical device actively positions the bone pins coincident with the virtual plane to ensure the cutting guides, when assembled to the pins, aligns one or more guide slots in the desired POSE to create the cuts.
    Type: Application
    Filed: April 21, 2022
    Publication date: August 25, 2022
    Applicant: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Publication number: 20220265377
    Abstract: Systems and methods for creating cuts on a bone are provided utilizing one or more cutting guides assembled to a plurality of bone pins, where the bone pins are inserted on the bone coincident with one or more virtual pin planes defined relative to one or more of the cuts. Alignment guides are also disclosed herein that aid in the creation of pilot holes for receiving a cutting block in a desired position and orientation (POSE). An articulating surgical device actively positions the bone pins coincident with the virtual plane to ensure the cutting guides, when assembled to the pins, aligns one or more guide slots in the desired POSE to create the cuts.
    Type: Application
    Filed: April 21, 2022
    Publication date: August 25, 2022
    Applicant: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Publication number: 20220249107
    Abstract: Systems and methods for creating cuts on a bone are provided utilizing one or more cutting guides assembled to a plurality of bone pins, where the bone pins are inserted on the bone coincident with one or more virtual pin planes defined relative to one or more of the cuts. Alignment guides are also disclosed herein that aid in the creation of pilot holes for receiving a cutting block in a desired position and orientation (POSE). An articulating surgical device actively positions the bone pins coincident with the virtual plane to ensure the cutting guides, when assembled to the pins, aligns one or more guide slots in the desired POSE to create the cuts.
    Type: Application
    Filed: April 21, 2022
    Publication date: August 11, 2022
    Applicant: Think Surgical, Inc.
    Inventors: Daniel P. Bonny, Joel Zuhars, Stephen M. Howell, Timothy Pack, Kyle Kuznik, Babak Kianmajd
  • Publication number: 20220192754
    Abstract: A device for checking post cut plane accuracy and alignment following bone removal in a bone of a patient during a computer-assisted surgical procedure to create a bone surface is provided. The device includes a body having an axis and adapted to contact the bone surface. One or more alignment features are associated with the body and are accessible when the body is in contact with the bone surface. Each of the one or more alignment features has a known orientation and position relative to the axis. A method for checking post cut plane accuracy and alignment following removal of bone from a patient to create a bone surface during a computer-assisted surgical procedure is also provided. A computer-assisted surgical system is provided that includes a tracking system, a tracked digitizer probe, the aforementioned device, a tracked surgical device, and one or more computers with software for determining the orientation.
    Type: Application
    Filed: April 13, 2020
    Publication date: June 23, 2022
    Applicant: THINK SURGICAL, INC.
    Inventors: Daniel Patrick Bonny, Yasmine Haddad, Timothy J. Pack, Eustache Felenc, Joel Zuhars
  • Publication number: 20220184823
    Abstract: A protective drape for a robotic arm is provided. The protective drape may be used with robotic arm that are required to operate in varied environments that illustratively include industrial applications, a sterile surgical suite for patient care, and a clean room for manufacturing sensitive electronic components. In each of these applications, there is a need to prevent contaminants from infiltrating from the environment to the robot and affecting operation of the robot itself or the robotic system, as well to prevent contaminants from the robot from infecting a patient or contaminating an assembly or process product.
    Type: Application
    Filed: March 4, 2022
    Publication date: June 16, 2022
    Applicant: THINK SURGICAL, INC.
    Inventors: Daniel P. Bonny, Joel Zuhars, Saleh Tabandeh, Timothy Pack, Randall Hanson, Michael E. Hoppe, Nathan A. Netravali, Avery N. Goldstein