Patents by Inventor Mark D. Overmyer

Mark D. Overmyer 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: 11504146
    Abstract: Various embodiments of tool assemblies are provided having at least one rotary input coupling and at least one linear input coupling for allowing either a rotary output or a linear output (e.g., from a tool driver on a surgical robot) to activate at least one mechanism of the tool assembly. For example, mechanisms of the tool assembly can include a clamping assembly, a firing assembly, an articulation assembly, and a roll assembly. The clamping assembly can open and close jaws of an end effector, the firing assembly can translate a knife assembly through the end effector to fire staples and cut tissue, the articulation assembly can articulate the end effector, and the roll assembly can rotate the elongate shaft and/or the end effector.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 22, 2022
    Assignee: Cilag GmbH International
    Inventor: Mark D. Overmyer
  • Patent number: 11497488
    Abstract: The present disclosure provides a method for controlling a surgical instrument. The method includes connecting a power assembly to a control circuit, wherein the power assembly is configured to provide a source voltage, energizing, by the power assembly, a voltage boost convertor circuit configured to provide a set voltage greater than the source voltage, and energizing, by the voltage boost convertor, one or more voltage convertors configured to provide one or more operating voltages to one or more circuit components.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 15, 2022
    Assignee: Cilag GmbH International
    Inventors: Richard L. Leimbach, Shane R. Adams, Mark D. Overmyer, Brett E. Swensgard, Frederick E. Shelton, IV, Kevin L. Houser
  • Patent number: 11490889
    Abstract: A surgical stapler. The surgical stapler includes a drive system, an electric motor, a battery and a control system. The electric motor is mechanically coupled to the drive system. The battery is electrically couplable to the electric motor. The control system is electrically connected to the electric motor and includes an H-bridge circuit, an electrically resistive element and an electrically inductive element. The H-bridge circuit includes a high side and a low side. The low side of the H-bridge circuit includes first and second switching devices. The electrically resistive element is electrically connected in series with the first switching device. The electrically inductive element is electrically connected to the electrically resistive element. The control system is configured to control a force applied to the drive system based on a current downstream of the electrically resistive element.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: November 8, 2022
    Assignee: Cilag GmbH International
    Inventors: Mark D. Overmyer, David C. Yates, Frederick E. Shelton, IV, Shane R. Adams, Richard L. Leimbach
  • Publication number: 20220346890
    Abstract: A surgical instrument includes an end effector, a shaft assembly, a drive, and an activating mechanism. The end effector includes first and second jaws. At least one of the first and second jaws is pivotable relative to the other of the first and second jaws between open and closed positions. The shaft assembly extends proximally from the end effector. The drive is operatively connected to a portion of at least one of the end effector or the shaft assembly. The activating mechanism includes an actuation body operatively connected to the drive. The portion is configured to perform a first actuation profile in response to the actuation body moving along a first predetermined path or perform a second actuation profile in response to the actuation body moving along a second predetermined path. Selection of the first predetermined path is configured to prevent the actuation body from accessing the second predetermined path.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Inventors: Christopher A. Denzinger, Mark D. Overmyer, Charles J. Scheib, Neil T. Markwardt, Brian D. Black
  • Publication number: 20220346891
    Abstract: A surgical instrument includes a drive housing, a spline, a carriage, an elongate shaft assembly, an end effector, and an activating mechanism. The spline includes a drive gear rotatable via the spline. The shaft assembly extends along a longitudinal axis from the carriage. The shaft assembly includes a wrist disposed between the end effector and a distal end of the shaft assembly. The activating mechanism includes a barrel cam extending along a rotational axis and having a first cam profile radially extending about the rotational axis. The barrel cam is operatively coupled to the drive gear such that rotation of the drive gear is configured to actuate the activating mechanism to move at least a portion of the end effector or the shaft assembly. The first cam profile defines a lock zone configured to selectively lock movement of the portion of the end effector or the shaft assembly.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Inventors: Christopher A. Denzinger, Mark D. Overmyer, Joshua D. Young, Charles J. Scheib
  • Publication number: 20220346897
    Abstract: A surgical instrument includes a drive housing, a spline, a carriage, an elongate shaft assembly, an end effector, and an activating mechanism. The at least one spline includes a drive gear rotatable with the spline. The elongate shaft assembly extends from the carriage. The activating mechanism includes a barrel cam extending along a rotational axis and having a first cam profile radially extending about the rotational axis. The barrel cam is operatively coupled to the drive gear such that rotation of the drive gear is configured to actuate the activating mechanism to move at least a portion of the end effector. The first cam profile defines a plurality of slopes relative to the rotational axis such that the first cam profile is configured to drive movement of the end effector or the elongate shaft assembly at different rates according to the plurality of slopes.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Inventors: Brian D. Black, Charles J. Scheib, Matthew T. Stone, Mark D. Overmyer, Christopher A. Denzinger, Andrew T. Beckman, Neil T. Markwardt
  • Publication number: 20220346898
    Abstract: A surgical instrument includes a drive housing, a spline, a carriage, an elongate shaft assembly, an end effector, and an activating mechanism. The spline includes a drive gear rotatable via the spline. The shaft assembly extends from the carriage. The activating mechanism is housed in the carriage and includes a barrel cam extending along a rotational axis. The barrel cam has a first cam profile radially extending about the rotational axis. The barrel cam is operatively coupled to the drive gear such that rotation of the drive gear is configured to actuate the activating mechanism to move at least a portion of the end effector. The first cam profile defines a first operational section, a second operational section, and an operational transition positioned between the first and second operational sections. The first and the second operational sections extend from the operational transition in opposite directions.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Inventors: Christopher A. Denzinger, Mark D. Overmyer, Charles J. Scheib
  • Patent number: 11471228
    Abstract: Various exemplary methods, systems, and devices for near field communication (NFC) between a surgical instrument and a robotic surgical system are provided. In general, a surgical tool is configured to move between different modes of communication with a robotic surgical system to which the tool is releasably and replaceably coupled. The different modes of communication are detectable by the robotic surgical system by the tool's frequency of NFC with the robotic surgical system. The tool includes a mechanism configured to be manipulated by a user of the tool to move the tool between the different modes of communication. The tool operating in a first mode of communication indicates to the robotic surgical system that the tool is operating in a normal state. The tool operating in each of one or more additional modes of communication indicates that the tool is operating in an error state.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: October 18, 2022
    Assignee: Cilag GmbH International
    Inventors: Mark D. Overmyer, Joshua Young, David C. Yates, James Hoffmaster, Ammon Wright, Vincenzo Barbato
  • Publication number: 20220323067
    Abstract: A surgical instrument for use by an operator in a surgical procedure includes an elongate shaft, an end effector extending from the elongate shaft, and a control system. The end effector is articulatable relative to the elongate shaft between a home state position and an articulated position. The control system includes a processor and a memory coupled to the processor to store program instructions. The processor can alert the operator when the end effector reaches the home state position from the articulated position.
    Type: Application
    Filed: February 1, 2022
    Publication date: October 13, 2022
    Inventors: Mark D. Overmyer, Brett E. Swensgard, Shane R. Adams, Thomas W. Lytle, IV, Richard L. Leimbach, Frederick E. Shelton, IV, Kevin L. Houser
  • Patent number: 11446036
    Abstract: An apparatus includes a body, a shaft, a stapling head assembly, and an anvil. The body includes a motor, a first user input feature, and a second user input feature. The first user input feature is operable to activate the motor. The shaft extends distally from the body. The stapling head assembly is positioned at a distal end of the shaft. The stapling head assembly includes an anvil coupling feature, at least one annular array of staples, and a staple driver. The second user input feature is operable to drive the anvil coupling feature longitudinally. The staple driver is operable to drive the at least one annular array of staples. The motor is operable to drive the staple driver. The anvil is configured to couple with the anvil coupling feature. The anvil is further configured to deform the staples driven by the staple driver.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: September 20, 2022
    Assignee: Cilag GmbH International
    Inventors: Brian F. DiNardo, Brian W. Bear, Charles J. Scheib, Christopher C. Miller, Craig S. Smith, Emily A. Schellin, Frederick E. Shelton, IV, Jason E. Zerkle, Jeffrey C. Gagel, John P. Measamer, Johnny H. Alexander, III, Joseph T. Kluener, Kevin D. Sackett, Kevin L. Houser, Mark D. Overmyer, Matthew H. Bolton, Omar J. Vakharia, Richard F. Schwemberger, Richard L. Leimbach, Rodney V. Clingaman, Timothy E. Goode, William D. Fox, William R. Stager
  • Patent number: 11419606
    Abstract: A shaft assembly is disclosed which is usable with a surgical system, such as a surgical robot and/or a handle of a surgical instrument, for example. The shaft assembly is configured to receive a rotary input motion from the surgical system and a transmission, or clutch, which is shiftable between a first operating mode and a second operating mode to selectively transmit the rotary input motion to a first drive system and a second drive system.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 23, 2022
    Assignee: Cilag GmbH International
    Inventors: Mark D. Overmyer, Frederick E. Shelton, IV
  • Publication number: 20220249182
    Abstract: A robotic surgical tool includes a handle having a drive input and a spline, a bailout ring arranged at the handle, and a slipper clutch mechanism received within the bailout ring. The slipper clutch mechanism including a slip carrier rotationally fixed to the bailout ring and defining a vertical slot that slidably receives a pin, a first ring arranged within the slip carrier and defining a first interface, a second ring arranged within the slip carrier atop the first ring and defining a second interface, and a pinion gear operatively coupled to the spline and arranged to intermesh with radial gear teeth defined on the second ring. Manual rotation of the bailout ring rotates the slip carrier and the pin and thereby rotates the first and second ring in succession to rotate the spline and manually bail out a function of the robotic surgical tool.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 11, 2022
    Applicant: Ethicon LLC
    Inventors: Raffaele DEFINIS, Benjamin L. BERTRAM, Christopher DENZINGER, Heather E. KNOX, Mark D. OVERMYER, Neil MARKWARDT
  • Patent number: 11399831
    Abstract: A shaft assembly for a surgical instrument that includes a movable drive member. In at least one form, the surgical instrument includes a spine assembly that is couplable to the surgical instrument and has a surgical end effector coupled thereto by an articulation joint. The shaft assembly in one form includes a proximal firing member and an intermediate firing member that is coupled to a distal firing member. The distal firing member is configured for selective travel through the surgical end effector. At least one articulation driver is coupled to the surgical end effector to apply articulation motions thereto. A clutch assembly interfaces with the primary and intermediate firing members and the articulation driver such that when in an articulation orientation, movement of the drive member results in movement of the articulation driver and when in a firing orientation, movement of the drive member results in movement of the intermediate and distal firing members.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: August 2, 2022
    Assignee: Cilag GmbH International
    Inventors: Mark D. Overmyer, Chester O. Baxter, III, Frederick E. Shelton, IV, Jerome R. Morgan
  • Publication number: 20220225986
    Abstract: A method for assessing performance of a surgical instrument including one or more drivetrains is disclosed. The method includes sensing via one or more vibration sensors vibrations generated during operation of the one or more drivetrains of the surgical instrument, generating an output signal based on the sensed vibrations, filtering the output signal to generate a filtered signal of the sensed vibrations from the one or more drivetrains, processing the filtered signal to generate a processed signal of the sensed vibrations from the one or more drivetrains, and comparing predetermined threshold values for each of an acceptable status, a marginal status, and a critical status of the surgical instrument to corresponding values of the processed signal.
    Type: Application
    Filed: January 31, 2022
    Publication date: July 21, 2022
    Inventors: Frederick E. Shelton, IV, Mark D. Overmyer, David C. Yates, Jason L. Harris
  • Publication number: 20220218381
    Abstract: The present disclosure provides a surgical instrument including an end effector, a drive member movable to effectuate a motion in said end effector, a motor operable to move the drive member to effectuate the motion in the end effector and a bailout assembly operable to perform a mechanical bailout of the surgical instrument in response to a bailout error. The bailout assembly includes a bailout door, a bailout handle accessible through the bailout door. The bailout handle is operable to move the drive member to effectuate a bailout motion in the end effector. A controller includes a memory and a processor coupled to the memory. The processor is configured to detect the bailout error. The processor is programed to stop the motor in response to the detection of the bailout error.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Richard L. Leimbach, Shane R. Adams, Mark D. Overmyer, Brett E. Swensgard, Thomas W. Lytle, IV, Frederick E. Shelton, IV, Kevin L. Houser
  • Publication number: 20220218332
    Abstract: A surgical instrument is configured to compensate for battery pack and drivetrain failures. One method includes generating a firing sequence, determining whether a subset of rechargeable battery cells is damaged during the firing sequence, and stepping-up an output voltage of the battery pack to complete the firing sequence in response to a determination that a subset of the rechargeable battery cells is damaged. Another method includes generating a mechanical output to motivate a drivetrain to transmit a motion to a jaw assembly of the surgical instrument, activating a safe mode in response to an acute failure of the drivetrain, and activating a bailout mode in response to a catastrophic failure of the drivetrain. Another method includes driving a drivetrain, sensing and recording vibration information from the drivetrain, generating an output signal based on the vibration information, and determining a status of the surgical instrument based on the output signal.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Inventors: Frederick E. Shelton, IV, Mark D. Overmyer, David C. Yates, Jason L. Harris
  • Publication number: 20220218382
    Abstract: The present disclosure provides a surgical instrument including an end effector, a drive member movable to effectuate a motion in said end effector, a motor operable to move the drive member to effectuate the motion in the end effector and a bailout assembly operable to perform a mechanical bailout of the surgical instrument in response to a bailout error. The bailout assembly includes a bailout door, a bailout handle accessible through the bailout door. The bailout handle is operable to move the drive member to effectuate a bailout motion in the end effector. A controller includes a memory and a processor coupled to the memory. The processor is configured to detect the bailout error. The processor is programed to stop the motor in response to the detection of the bailout error.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Richard L. Leimbach, Shane R. Adams, Mark D. Overmyer, Brett E. Swensgard, Thomas W. Lytle, IV, Frederick E. Shelton, IV, Kevin L. Houser
  • Publication number: 20220218340
    Abstract: A surgical instrument. The surgical instrument includes an elongated channel configured to support a staple cartridge, an anvil pivotably connected to the elongated channel, a knife mechanically coupled to the staple cartridge, an electric motor and a control circuit electrically connected to the electric motor. The control circuit is configured to change a firing motion a first way based on a first value of a projected peak firing force and a second way based on a second value of the projected peak firing force value.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Jason L. Harris, Frederick E. Shelton, IV, Mark D. Overmyer
  • Publication number: 20220218338
    Abstract: The present disclosure provides a method for controlling a surgical instrument. The method includes connecting a power assembly to a control circuit, wherein the power assembly is configured to provide a source voltage, energizing, by the power assembly, a voltage boost convertor circuit configured to provide a set voltage greater than the source voltage, and energizing, by the voltage boost convertor, one or more voltage convertors configured to provide one or more operating voltages to one or more circuit components.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Frederick E. Shelton, IV, Brett E. Swensgard, Richard L. Leimbach, Shane R. Adams, Mark D. Overmyer, Kevin L. Houser
  • Patent number: D971232
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: November 29, 2022
    Assignee: Cilag GmbH International
    Inventors: Tony C. Siebel, Sol A. Posada, Richard L. Leimbach, Raymond E. Parfett, Kevin D. Sackett, John V. Hunt, Douglas E. Withers, Mark D. Overmyer, Shane R. Adams