Patents by Inventor David W. Weir

David W. Weir 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: 20180161052
    Abstract: A system and method of reducing blade exposures includes a surgical cutting. The surgical cutting instrument includes an end effector located at a distal end of the surgical cutting instrument, one or more drive units, a shaft coupled to the drive unit, an articulated wrist coupling the end effector to the shaft, and one or more drive mechanisms in the shaft for coupling force or torque from the drive units to the end effector and the articulated wrist. The end effector includes opposable gripping jaws and a cutting blade. To perform a cutting operation, the surgical cutting instrument measures a jaw angle between the gripping jaws, measures articulation of the articulated wrist, corrects the jaw angle based on the articulation of the articulated wrist, determines a restriction on the cutting operation based on the corrected jaw angle, and performs or prevents the cutting operation based on the restriction.
    Type: Application
    Filed: May 13, 2016
    Publication date: June 14, 2018
    Inventors: David W. Weir, Julie L. Berry, Melissa D. Lippiatt, Daniel P. Saraliev, Melody Wu
  • Publication number: 20180161112
    Abstract: A system and method of operating a minimally invasive cutting instrument includes a surgical cutting instrument. The surgical cutting instrument includes a drive unit, an end effector located at a distal end of the instrument, and a garage for housing the cutting blade when the cutting blade is not in use. The end effector includes gripping jaws and a cutting blade. To perform a cutting operation, the instrument extends the cutting blade from a first position to a second position, retracts the cutting blade from the second position to a third position between the first and second positions, and further retracts the cutting blade to the first position. While the cutting blade is not in use, the cutting blade is maintained in the first position using a restraining mechanism in the drive unit, force or torque applied by a motor or other active actuator to the drive unit, or both.
    Type: Application
    Filed: May 13, 2016
    Publication date: June 14, 2018
    Inventors: David W. Weir, Michael Waldo, Melody Wu
  • Publication number: 20180116749
    Abstract: A system and method of force or torque limit compensation includes a surgical instrument for use with a computer-assisted medical device. The surgical instrument includes an end effector located at a distal end of the instrument, a drive unit for operating a degree of freedom of the instrument, a shaft coupled to the drive unit, and one or more drive mechanisms in the shaft for coupling force or torque from the drive unit to the end effector and the articulated wrist. To control the degree of freedom, the instrument is configured to determine a current position of the degree of freedom, determine a force or torque limit compensation based on the current position, alter one or more force or torque limits based on the force or torque limit compensation, and adjust the degree of freedom subject to the one or more force or torque limits.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 3, 2018
    Inventors: Melody Wu, David W. Weir
  • Publication number: 20180098766
    Abstract: Systems and methods for controlling staple firing include an end effector including a first jaw and a second jaw holding staples, a drive system configured to apply a force or torque to cause staple firing to occur, and a processor. The processor is configured to monitor the applied force or torque and control application of the force or torque by the drive system based on a comparison of the applied force or torque to an acceptable range of force or torque. In some embodiments, the processor is further configured to determine one or more of a position of the first jaw and the second jaw or a displacement of the drive system and control application of the force or torque by the drive system based on one or more of the position of the first jaw and the second jaw or the displacement of the drive system.
    Type: Application
    Filed: December 8, 2017
    Publication date: April 12, 2018
    Inventors: David W. Weir, Kevin Durant, Patrick Flanagan, David W. Robinson
  • Publication number: 20170224340
    Abstract: Embodiments of a clamping system are disclosed. In some embodiments, a system used with a motor assembly and a clamping device is presented, the system adjusting torque limits in the motor assembly according to conditions, for example operating temperature of the motor assembly and aging of the clamping device and the motor assembly. The clamping device can be, for example, a stapler or a vessel sealer.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: DAVID W. WEIR, MELODY WU, GABRIEL F. BRISSON, KEVIN DURANT, GRANT DUQUE
  • Patent number: 9675354
    Abstract: Embodiments of a clamping system are disclosed. In some embodiments, a system used with a motor assembly and a clamping device is presented, the system adjusting torque limits in the motor assembly according to conditions, for example operating temperature of the motor assembly and aging of the clamping device and the motor assembly. The clamping device can be, for example, a stapler or a vessel sealer.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 13, 2017
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: David W. Weir, Melody Wu, Gabriel F. Brisson, Kevin Durant, Grant Duque
  • Publication number: 20170055995
    Abstract: Embodiments of a clamping instrument are disclosed. In some embodiments, a clamping device with calibrated parameters and a calibration process for the clamping device is presented. A method of calibrating a clamping instrument can include acquiring a data set of clamping torque as a function of tip deflection data for the clamping instrument; determining a torque limit from the data set; and storing the torque limit in the clamping instrument.
    Type: Application
    Filed: November 11, 2016
    Publication date: March 2, 2017
    Inventors: David W. Weir, Melody Wu, Kevin Durant, Grant Duque
  • Publication number: 20170020617
    Abstract: A telesurgery system having a surgical assembly with a motor and a surgical instrument. The surgical assembly has at least one drive mechanism driven by the motor. A sensor assembly is coupled to non-volatile memory, and is for recording position of the at least one rotatable mechanism to the non-volatile memory. A controller is communicatively coupled to the sensor assembly. The controller a processor configured to execute a method. In the method, rotational position of the a drive mechanism is recorded to the non-volatile memory during use of the surgical assembly. A mid-procedure shut-down of the surgical assembly is then initiated. A request is then received to initiate a mid-procedure restart of the surgical assembly. It is then determined whether a post-shutdown position of the drive mechanism is within an accepted tolerance with respect to a pre-shutdown position to allow the mid-procedure restart to complete.
    Type: Application
    Filed: March 17, 2015
    Publication date: January 26, 2017
    Inventors: David W. Weir, Niels Smaby, Joseph M. Arsanious, Gabriel F. Brisson
  • Patent number: 9522003
    Abstract: Embodiments of a clamping instrument are disclosed. In some embodiments, a clamping device with calibrated parameters and a calibration process for the clamping device is presented. A method of calibrating a clamping instrument can include acquiring a data set of clamping torque as a function of tip deflection data for the clamping instrument; determining a torque limit from the data set; and storing the torque limit in the clamping instrument.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: December 20, 2016
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: David W. Weir, Melody Wu, Kevin Durant, Grant Duque
  • Patent number: 8912746
    Abstract: A latch mechanism selectively retains a first assembly to a second assembly. The first and second assemblies are configured for sliding engagement along an engagement axis. The latch mechanism includes a latch shaft mounted to the first assembly to rotate about a latch shaft axis, a torsion spring to bias the latch shaft relative to the first assembly, and a transverse latch member coupled with the second assembly. The latch mechanism is configured to automatically latch in response to the first assembly being pushed toward the second assembly. The transverse latch member interacts with the latch shaft to rotate the latch shaft in a first direction in response to movement of the first assembly toward the second assembly. Further motion of the first assembly toward the second assembly results in rotation of the latch shaft opposite to the first direction into a retention configuration that retains the transverse latch member.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: December 16, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Robert Cyrus Reid, John W. Zabinski, Alan Eton Loh, Bruce M. Schena, David W. Weir, Gregory W. Dachs, II, David W. Bailey, Melody Wu
  • Publication number: 20140200612
    Abstract: Embodiments of a clamping instrument are disclosed. In some embodiments, a clamping device with calibrated parameters and a calibration process for the clamping device is presented. A method of calibrating a clamping instrument can include acquiring a data set of clamping torque as a function of tip deflection data for the clamping instrument; determining a torque limit from the data set; and storing the torque limit in the clamping instrument.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Inventors: David W. Weir, Melody Wu, Kevin Durant, Grant Duque
  • Publication number: 20140200596
    Abstract: Embodiments of a clamping system are disclosed. In some embodiments, a system used with a motor assembly and a clamping device is presented, the system adjusting torque limits in the motor assembly according to conditions, for example operating temperature of the motor assembly and aging of the clamping device and the motor assembly. The clamping device can be, for example, a stapler or a vessel sealer.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Inventors: David W. Weir, Melody Wu, Gabriel F. Brisson, Kevin Durant, Grant Duque
  • Publication number: 20140200851
    Abstract: A motor assembly is presented. A motor assembly can include at least one motor; a memory to store calibrated parameters related to the at least one motor; and electronics coupled to the memory, the at least one motor, the electronics including interfaces to couple with a clamping device and a system to control the operation of the at least one motor. The calibrated parameters are determined for the at least one motor with a procedure that includes performing an initial calibration of the at least one motor; wearing in the at least one motor; performing a final calibration of the at least one motor; and storing calibration data in the memory. In some embodiments, the at least one motor can include a clamping motor and/or a firing motor. In some embodiments, lifetime parameters are stored in the memory.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Inventors: David W. Weir, Melody Wu, Kevin Durant, Grant Duque
  • Patent number: 8638056
    Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: January 28, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Randal P. Goldberg, Michael Hanuschik, Paul Millman, John W. Zabinski, David Robinson, David W. Weir, Paul W. Mohr, David W. Bailey
  • Patent number: 8508173
    Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: August 13, 2013
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Randal P. Goldberg, Michael Hanuschik, Paul Millman, John W. Zabinski, David Robinson, David W. Weir, Paul W. Mohr, Thomas R. Nixon, David W. Bailey
  • Publication number: 20120283876
    Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.
    Type: Application
    Filed: January 24, 2012
    Publication date: November 8, 2012
    Inventors: Randal P. Goldberg, Michael Hanuschik, Paul Millman, John W. Zabinski, David Robinson, David W. Weir, Paul W. Mohr, Thomas R. Nixon, David W. Bailey
  • Publication number: 20120248167
    Abstract: Systems and methods are provided for detecting misfire of a surgical staple cartridge and for indicating such misfire to a user on a user interface. An actuation force applied to a staple cartridge is measured and compared to a threshold actuation force. In response to the comparison, a controller determines if there has been a misfire of the surgical staple cartridge. A determination that misfire has occurred is made when the measured actuation force is greater than a maximum threshold force or less than a minimum threshold force, and under such circumstances, the controller terminates the staple firing sequence.
    Type: Application
    Filed: May 15, 2012
    Publication date: October 4, 2012
    Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Patrick FLANAGAN, David W. Weir
  • Publication number: 20120221147
    Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.
    Type: Application
    Filed: January 24, 2012
    Publication date: August 30, 2012
    Applicant: Intuitive Surgical Operations, Inc.
    Inventors: Randal P. Goldberg, Michael Hanuschik, Paul Millman, John W. Zabinski, David Robinson, David W. Weir