Patents by Inventor Amir Chaghajerdi

Amir Chaghajerdi 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: 20170273752
    Abstract: An instrument carriage provides control of a surgical instrument coupled to the instrument carriage. The instrument carriage includes a control surface that is coupled to the surgical instrument to provide the control. A detection pin having a first distal end that extends from the control surface is coupled to the instrument carriage. A magnet is fixed to a proximal end of the detection pin. A carriage controller provides an indication that the surgical instrument is present on the instrument carriage when movement of the detection pin causes an output signal from a Hall effect sensor to exceed a presence threshold value that is stored in the carriage controller as part of a calibration procedure during the assembly of the instrument carriage. Surgical instrument removal may be indicated when detection pin movement causes the output signal to be less than a removal threshold value of less than the presence threshold value.
    Type: Application
    Filed: June 9, 2017
    Publication date: September 28, 2017
    Inventors: Gregory W. Dachs, II, Bruce Michael Schena, Amir Chaghajerdi, Niels Smaby, Tyler Morrissette
  • Patent number: 9687312
    Abstract: An instrument carriage provides control of a surgical instrument coupled to the instrument carriage. The instrument carriage includes a control surface that is coupled to the surgical instrument to provide the control. A detection pin having a first proximal end that extends from the control surface is coupled to the instrument carriage. A magnet is fixed to a distal end of the detection pin. A carriage controller provides an indication that the surgical instrument is coupled to the instrument carriage when movement of the detection pin causes an output signal from a Hall effect sensor to exceed a threshold value that is stored in the carriage controller as part of a calibration procedure during the assembly of the instrument carriage. Surgical instrument removal may be indicated when detection pin movement causes the output signal to be less than an instrument removal threshold value of less than the instrument threshold value.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 27, 2017
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Gregory W. Dachs, II, Bruce Michael Schena, Amir Chaghajerdi, Niels Smaby, Tyler Morrissette
  • Publication number: 20170179857
    Abstract: A method for torque compensation of a motor associated with a medical instrument includes determining a torque profile for a motor, the torque profile defining torque output as a function of rotor angle and during operation of the motor, compensating for deviations in the torque profile by adjusting an input signal to the motor, the compensating being based on the torque profile and rotor position.
    Type: Application
    Filed: February 17, 2015
    Publication date: June 22, 2017
    Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Hsien-Hsin Liao, Niels Smaby, Gregory W. Dachs II, Pushkar Hingwe, Amir Chaghajerdi
  • Publication number: 20160361127
    Abstract: An instrument carriage provides control of a surgical instrument coupled to the instrument carriage. The instrument carriage includes a control surface that is coupled to the surgical instrument to provide the control. A detection pin having a first proximal end that extends from the control surface is coupled to the instrument carriage. A magnet is fixed to a distal end of the detection pin. A carriage controller provides an indication that the surgical instrument is coupled to the instrument carriage when movement of the detection pin causes an output signal from a Hall effect sensor to exceed a threshold value that is stored in the carriage controller as part of a calibration procedure during the assembly of the instrument carriage. Surgical instrument removal may be indicated when detection pin movement causes the output signal to be less than an instrument removal threshold value of less than the instrument threshold value.
    Type: Application
    Filed: March 17, 2015
    Publication date: December 15, 2016
    Inventors: Gregory W. Dachs, II, Bruce Michael Schena, Amir Chaghajerdi, Niels Smaby, Tyler Morrissette
  • Publication number: 20160361131
    Abstract: A sterile adapter for coupling a surgical instrument and a surgical instrument manipulator includes a bottom component and a coupling component. The bottom component includes a bottom component opening with a bottom lip having a locking mechanism. The coupling component is rotatably coupled to the bottom component. The coupling component includes an engagement feature that engages the surgical instrument manipulator. The coupling component further includes a locking mechanism opening that engages the locking mechanism when the engagement feature has not engaged the surgical instrument manipulator. The coupling component may include a retention tab that is aligned with the keyway to insert the coupling component into the bottom component opening and then misaligned with the keyway to retain the coupling component in the bottom component opening. A ramp may be provided on a leading edge of a pocket to facilitate engaging the coupling component with the surgical instrument manipulator.
    Type: Application
    Filed: March 17, 2015
    Publication date: December 15, 2016
    Inventors: Gregory W. Dachs, II, Bruce Michael Schena, Amir Chaghajerdi, Niels Smaby