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    Firing circuit for surgical stapler
    3.
    发明授权
    Firing circuit for surgical stapler 有权

    公开(公告)号：US11446025B2

    公开(公告)日：2022-09-20

    申请号：US16351926

    申请日：2019-03-13

    Applicant: Cilag GmbH International

    Inventor： William R. Stager ,  Matthew H. Bolton ,  Christopher C. Miller ,  Frederick E. Shelton, IV

    IPC: A61B17/115 ,  A61B17/064 ,  A61B17/068 ,  A61B90/00 ,  A61B17/00

    Abstract: A surgical instrument includes a stapling head assembly, an anvil, a firing assembly, a motor, a user input feature, and an electrical circuit. The firing assembly actuates the stapling head assembly to drive an annular array of staples through tissue toward the anvil. The motor actuates the firing assembly through an actuation stroke to thereby actuate the stapling head assembly. The electrical circuit includes a trigger switch and an electrical latching feature. The trigger transitions from an open state to a closed state in response to the user input feature transitioning from a non-actuated state to an actuated state. The electrical circuit activates the motor in response to closure of the trigger switch. The electrical latching feature maintains activation of the motor to complete the actuation stroke even if the trigger switch is transitioned back to the open state before completion of the actuation stroke.

    POWER CONTROL CIRCUIT FOR POWERED SURGICAL STAPLER
    6.
    发明申请
    POWER CONTROL CIRCUIT FOR POWERED SURGICAL STAPLER 有权

    公开(公告)号：US20240374258A1

    公开(公告)日：2024-11-14

    申请号：US18783809

    申请日：2024-07-25

    Applicant: Cilag GmbH International

    Inventor： Shane R. Adams ,  Nicholas J. Ross ,  Joseph D. Paulowski ,  William R. Stager ,  Timothy E. Goode ,  Austin E. Wise

    IPC: A61B17/115 ,  A61B17/00 ,  A61B17/11 ,  A61B90/00

    Abstract: An apparatus includes a body, a shaft, a stapling assembly, and a sequential logic device. The body includes a safety switch, a firing actuator, and a motor. The stapling assembly is disposed at a distal end of the shaft, wherein the stapling assembly is configured to selectively move from an open position to a closed position to clamp tissue. The sequential logic device is operatively coupled with the motor and configured to detect an actuation of the safety switch and of the firing actuator. The sequential logic device is further operable to detect an order in which the safety switch and the firing actuator are actuated, compare the detected order to a predetermined order, and in response to determining that the detected order is equivalent to the predetermined order, transmit a motor activation signal to the motor.

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