Patents by Inventor Christopher DENZINGER

Christopher DENZINGER 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: 12558091
    Abstract: A tissue sensor is used with a surgical stapling instrument to sense tissue characteristics and to provide accurate tissue measurements. The tissue sensor includes a flexible substrate, a sensor array, and a controller. The flexible substrate is disposed between the tissue and the surgical stapler. The sensor array comprises sensors disposed on the flexible substrate, senses a parameter, and generates a signal indicative thereof in response to a clamping force that is applied by the surgical stapler to clamp the tissue and the tissue sensor together. The controller is disposed in or on the flexible substrate and is configured to receive the signal from the sensor array, process the signal to determine a measurement of the parameter based on the processed signal, and provide an indication of the measurement of the parameter to a user of the surgical stapler.
    Type: Grant
    Filed: April 4, 2024
    Date of Patent: February 24, 2026
    Assignee: Cilag GmbH International
    Inventors: Christopher Denzinger, Mark Overmyer, Heather Dickson, Craig Smith, Jonathan Von Stein
  • Patent number: 12544067
    Abstract: Systems and subsystems for cutting and stapling tissue are disclosed. More specifically, the present disclosure relates to systems, devices, and subsystems for attachments for robotic surgeries. The surgical instrument is a robotic attachment including a roll subsystem. The roll subsystem comprises a rotatable shaft having a longitudinal axis, a roll input puck engageable with a roll robotic output, a worm gear coupled to and rotatable by the roll input puck, and a worm follower coupled to the rotatable shaft. Rotation of the roll input puck causes the worm gear to rotate the worm follower and thereby roll the rotatable shaft about its longitudinal axis.
    Type: Grant
    Filed: July 17, 2024
    Date of Patent: February 10, 2026
    Assignee: CILAG GMBH INTERNATIONAL
    Inventors: Christopher Batty, Benjamin Bertram, Raffaele Definis, Christopher Denzinger, Martin Dolgiej, Disha Estera, Rockford A. Linville
  • Publication number: 20250375200
    Abstract: Systems and subsystems for closing an end effector of a stapler are disclosed. More specifically, the present disclosure relates to systems, devices, and subsystems for attachments for robotic surgeries. The surgical instrument is a robotic attachment. The surgical instrument includes a closure subsystem that moves independently of other subsystems that are operable independently of each other.
    Type: Application
    Filed: August 27, 2025
    Publication date: December 11, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: CHRISTOPHER BATTY, RAFFAELE DEFINIS, JONATHAN VON STEIN, CHRISTOPHER DENZINGER, DAVID KEILHOLZ, MARK D. OVERMYER
  • Publication number: 20250312037
    Abstract: A tissue sensor is used with a surgical stapling instrument to sense tissue characteristics and to provide accurate tissue measurements. The tissue sensor includes a flexible substrate, a sensor array, and a controller. The flexible substrate is disposed between the tissue and the surgical stapler. The sensor array comprises sensors disposed on the flexible substrate, senses a parameter, and generates a signal indicative thereof in response to a clamping force that is applied by the surgical stapler to clamp the tissue and the tissue sensor together. The controller is disposed in or on the flexible substrate and is configured to receive the signal from the sensor array, process the signal to determine a measurement of the parameter based on the processed signal, and provide an indication of the measurement of the parameter to a user of the surgical stapler.
    Type: Application
    Filed: April 4, 2024
    Publication date: October 9, 2025
    Applicant: Cilag GmbH International
    Inventors: Christopher Denzinger, Mark Overmyer, Heather Dickson, Craig Smith, Jonathan Von Stein
  • Patent number: 12383274
    Abstract: A surgical instrument includes a shaft deflection detection system including one or more sensors positioned at a first mechanical junction between a shaft and an actuator coupled with the shaft and/or a second mechanical junction between the shaft and an end effector coupled with the shaft. The shaft is movable relative to the actuator at the first mechanical junction and/or relative to the end effector at the second mechanical junction. The one or more sensors are configured to generate signals indicative of movement of the shaft relative to the actuator and/or the end effector. The movement of the shaft is caused by an external force experienced by the shaft as the shaft of the surgical instrument is maneuvered inside a body of a patient.
    Type: Grant
    Filed: April 12, 2024
    Date of Patent: August 12, 2025
    Assignee: Cilag GmbH International
    Inventor: Christopher Denzinger
  • Publication number: 20250235214
    Abstract: Disclosed is an anvil for a surgical stapler, the anvil being locally powered and including a contact indication with light indicator. The light indicators provide feedback as to the status of the anvil. The anvil can include a battery or capacitor-based circuit, which can be charged locally or via a power source on the handle.
    Type: Application
    Filed: April 11, 2025
    Publication date: July 24, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: RYAN CLAY, ANDREW BECKMAN, CHRISTOPHER DENZINGER
  • Patent number: 12357303
    Abstract: The present disclosure provides a circular stapler. The circular stapler includes a stapling head assembly. A trocar is positioned at least partially within the stapling head assembly. An anvil is detachably attachable to the trocar. A knob rotatable to cause translation of the trocar to adjust a position of the anvil with respect to the stapling head assembly. One or more sensors are configured to generate data associated with a trocar position or an anvil state. A communication element is configured to provide the generated data to a hub, wherein the hub is configured to provide an indicator associated with the trocar position or the anvil state based on the generated data.
    Type: Grant
    Filed: March 13, 2024
    Date of Patent: July 15, 2025
    Assignee: CILAG GMBH INTERNATIONAL
    Inventors: Christopher Denzinger, Monica Rivard, Cory G. Kimball, Matthew Corbin, Laura S. Downing, Matthew D. Cowperthwait
  • Publication number: 20250204914
    Abstract: The present disclosure provides a circular stapler. The circular stapler includes a stapling head assembly, an anvil detachably attachable to the stapling head assembly, and a handle assembly. The handle assembly includes a handle controller, a connector, and handle transceiver configured to wirelessly transmit a first signal to an external hub. The handle transceiver is separated from the handle controller and is in electrical communication with the handle controller via the connector.
    Type: Application
    Filed: December 22, 2023
    Publication date: June 26, 2025
    Inventors: MATTHEW D. COWPERTHWAIT, Logan R. Rose, Christopher Denzinger, Shane R. Adams, Eric Lafay
  • Patent number: 12336714
    Abstract: The present disclosure provides a circular stapler. The circular stapler includes a stapling head assembly, an anvil detachably attachable to the stapling head assembly, and a handle assembly. The handle assembly includes a handle controller, a connector, and handle transceiver configured to wirelessly transmit a first signal to an external hub. The handle transceiver is separated from the handle controller and is in electrical communication with the handle controller via the connector.
    Type: Grant
    Filed: December 22, 2023
    Date of Patent: June 24, 2025
    Assignee: CILAG GMBH INTERNATIONAL
    Inventors: Matthew D. Cowperthwait, Logan R. Rose, Christopher Denzinger, Shane R. Adams, Eric Lafay
  • Patent number: 12274447
    Abstract: The present disclosure provides a stapling apparatus. The apparatus includes a trocar, a stapling head assembly, and an anvil. The stapling head assembly includes one or more lights positioned on a surface of a tubular casing of the stapling head assembly, the lights extending parallel to a longitudinal axis of the stapling head assembly. The row of lights provide an illumination system to provide indicators of device orientation or location.
    Type: Grant
    Filed: December 22, 2023
    Date of Patent: April 15, 2025
    Assignee: CILAG GMBH INTERNATIONAL
    Inventors: Matthew D. Cowperthwait, Christopher Denzinger, Shane R. Adams, Eric Lafay
  • Patent number: 12274519
    Abstract: A surgical tool includes a drive housing, a closure tube extending from the drive housing, and an end effector arranged at an end of the closure tube and having opposing jaws. A method of operating the surgical tool includes operating one or more motors in a first direction at a constant velocity and thereby urging the closure tube to move and actuate the opposing jaws to engage and clamp onto tissue, stopping operation of the motor(s) in the first direction when a torque on the motor(s) exceeds a predetermined torque, storing an angular position of the motor(s) when the torque exceeds the predetermined torque, operating the motor(s) in a second direction opposite the first direction over a preset angular magnitude, and upon reaching the preset angular magnitude, operating the motor(s) in the first direction at the constant velocity.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: April 15, 2025
    Assignee: Cilag GmbH International
    Inventors: Mark Overmyer, Raffaele Definis, Christopher Denzinger
  • Publication number: 20250025160
    Abstract: Systems and subsystems for cutting and stapling tissue are disclosed. More specifically, the present disclosure relates to systems, devices, and subsystems for attachments for robotic surgeries. The surgical instrument is a robotic attachment that includes a closure subsystem for a surgical instrument comprising a first closure input puck engageable with a first closure robotic output, a cam gear rotatably engaged with the first closure input puck, and a yoke pin coupled to a closure tube and movable from a first position to a second position in response to a rotation of the cam gear. Movement of the yoke pin from the first position to the second position translates the closure tube distally onto an anvil ramp of an anvil.
    Type: Application
    Filed: July 17, 2024
    Publication date: January 23, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: CHRISTOPHER BATTY, RAFFAELE DEFINIS, JONATHAN VON STEIN, CHRISTOPHER DENZINGER, DAVID KEILHOLZ
  • Publication number: 20250025161
    Abstract: Systems and subsystems for cutting and stapling tissue are disclosed. More specifically, the present disclosure relates to systems, devices, and subsystems for attachments for robotic surgeries. The surgical instrument is a robotic attachment including a roll subsystem. The roll subsystem comprises a rotatable shaft having a longitudinal axis, a roll input puck engageable with a roll robotic output, a worm gear coupled to and rotatable by the roll input puck, and a worm follower coupled to the rotatable shaft. Rotation of the roll input puck causes the worm gear to rotate the worm follower and thereby roll the rotatable shaft about its longitudinal axis.
    Type: Application
    Filed: July 17, 2024
    Publication date: January 23, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: CHRISTOPHER BATTY, BENJAMIN BERTRAM, RAFFAELE DEFINIS, CHRISTOPHER DENZINGER, MARTIN DOLGIEJ, Disha Estera, Rockford A. Linville
  • Publication number: 20250025155
    Abstract: Systems and subsystems for closing an end effector of a stapler are disclosed. More specifically, the present disclosure relates to systems, devices, and subsystems for attachments for robotic surgeries. The surgical instrument is a robotic attachment. The surgical instrument includes a closure subsystem that moves independently of other subsystems that are operable independently of each other.
    Type: Application
    Filed: July 17, 2024
    Publication date: January 23, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: CHRISTOPHER BATTY, RAFFAELE DEFINIS, JONATHAN VON STEIN, CHRISTOPHER DENZINGER, DAVID KEILHOLZ
  • Publication number: 20250025164
    Abstract: Systems and subsystems for using a robotic instrument are disclosed. The method includes engaging a first closure input puck with a first closure robotic output. The method includes rotating the first closure robotic output to cause the first closure input puck to rotate. The method includes rotating a cam gear via the rotation of the first closure input puck. Rotation of the cam gear causes a yoke pin to track through a cam track in the cam gear, and the yoke pin is coupled to a closure tube. Tracking of the yoke pin through the cam track causes the yoke pin to translate from a first position to a second position, thereby translating the closure tube.
    Type: Application
    Filed: July 17, 2024
    Publication date: January 23, 2025
    Applicant: CILAG GMBH INTERNATIONAL
    Inventors: CHRISTOPHER BATTY, RAFFAELE DEFINIS, JONATHAN VON STEIN, CHRISTOPHER DENZINGER, DAVID KEILHOLZ
  • Patent number: 12102402
    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: Grant
    Filed: February 11, 2021
    Date of Patent: October 1, 2024
    Assignee: Cilag GmbH International
    Inventors: Raffaele Definis, Benjamin L. Bertram, Christopher Denzinger, Heather E. Knox, Mark D. Overmyer, Neil Markwardt
  • Publication number: 20220409310
    Abstract: A surgical tool includes a drive housing, a closure tube extending from the drive housing, and an end effector arranged at an end of the closure tube and having opposing jaws. A method of operating the surgical tool includes operating one or more motors in a first direction at a constant velocity and thereby urging the closure tube to move and actuate the opposing jaws to engage and clamp onto tissue, stopping operation of the motor(s) in the first direction when a torque on the motor(s) exceeds a predetermined torque, storing an angular position of the motor(s) when the torque exceeds the predetermined torque, operating the motor(s) in a second direction opposite the first direction over a preset angular magnitude, and upon reaching the preset angular magnitude, operating the motor(s) in the first direction at the constant velocity.
    Type: Application
    Filed: July 11, 2022
    Publication date: December 29, 2022
    Applicant: Cilag GmbH International
    Inventors: Mark Overmyer, Raffaele DEFINIS, Christopher DENZINGER
  • 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