摘要:
A method for performing a coronary artery bypass graft procedure on a patient to connect a bypass vessel to a target vessel includes the steps of creating an opening in the patient that communicates with the thoracic cavity of the patient; providing a bypass vessel having a lumen and at least one free end; passing the free end of the bypass vessel from the thoracic cavity through the opening to a position outside the body of the patient; attaching a connector to the free end of bypass vessel while the free end of the bypass vessel is outside the body of the patient; passing the free end of the bypass vessel from the position outside the body of the patient through the opening and into the thoracic cavity; and connecting the free end of the bypass vessel to a target vessel with the connector.
摘要:
There is provided a surgical instrument incorporating driving force mechanisms capable of transmitting a driving force through an articulated section (30) of the surgical instrument. In one embodiment, a series of racks (80,90) connect with a transfer gear (84) to pass forces around the articulated section. In an alternative embodiment a series of cable sections and wheels or pulleys are provided to transmit a driving force through the articulated section of the surgical instrument.
摘要:
A minimal access tool includes a frame arranged to be attached to an arm of a user, a tool shaft having a proximal end and a distal end, where the tool shaft proximal end is connected to the frame. The tool further includes an input joint having a first end connected to the frame and a second end arranged to receive user input, the input joint including a virtual center-of-rotation (VC) mechanism which provides a center of rotation that generally coincides with a wrist joint of the user. An output joint is connected to the tool shaft distal end, where the output joint is coupled to the input joint via a mechanical transmission connected therebetween to correlate motion of the input joint to motion of the output joint.
摘要:
Devices and methods are provided for facilitating closing and clamping of an end effector of a surgical device. In general, the devices and methods can be configured to increase a moment arm of the end effector, thereby increasing a closure force of the end effector. In an exemplary embodiment, a surgical device can include a closure mechanism configured to provide an increased moment arm at the device's end effector, such as at a proximal end thereof.
摘要:
An actuator for controlling a compressive force of a detachable laparoscopic grasper head. The actuator includes a handle unit comprising a movable lever, an outer tube member proximally connected to the handle unit and, when in use, distally connected to a first member of a detachable grasper head, a transmission member which comprises at least partially an elastic portion. The transmission member is axially arranged inside said outer tube member. The transmission member is proximally connected to the movable lever and, when in use, distally connected to a second member of the detachable grasper head. The transmission member is configured to transfer a lever force applied when moving the movable lever for actuating a compressive force by the grasping head depending on the lever force.
摘要:
A self contained motor-powered disposable loading unit for use with a robotic system configured to generate control systems therefor. The disposable loading unit may contain a battery that is retained in a disconnected position when the disposable loading unit is not in use and is moved to a connected position when the disposable loading unit is coupled to the robotic system to permit the motor to be selectively powered thereby. Indicators may be supported on the disposable loading unit to indicate when the axial drive assembly thereof is in a starting position and an ending position. Another indicator may be provided to indicate when the anvil assembly is in a closed position.