Apparatus for pitch and yaw rotation
First Claim
1. A medical apparatus comprising:
- a tool shaft having a distal end, a proximal end, and a longitudinal axis extending from the distal end to the proximal end;
a wrist having a distal end and a proximal end, the wrist coupled at its proximal end to the distal end of the tool shaft, the wrist being articulable in pitch and in yaw;
an end effector coupled to the distal end of the wrist;
a frame coupled to the proximal end of the tool shaft;
a cable actuator mechanism coupled to the frame, the cable actuator mechanism configured to be movable relative to the frame; and
a plurality of transmission cables extending through the tool shaft from the cable actuator mechanism to the wrist, the plurality of transmission cables transmitting motion of the cable actuator mechanism to orient the end effector relative to the longitudinal axis of the tool shaft;
wherein the cable actuator mechanism comprises a gimbal assembly, the gimbal assembly configured to be pivotable relative to the frame about at least one axis.
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Accused Products
Abstract
The present invention is directed to a tool having a wrist mechanism that provides pitch and yaw rotation in such a way that the tool has no singularity in roll, pitch, and yaw. A positively positionable multi-disk wrist mechanism includes a plurality of disks or vertebrae stacked in series. Each vertebra is configured to rotate in pitch or in yaw with respect to each neighboring vertebra. Actuation cables are used to manipulate and control movement of the vertebrae. In specific embodiments, some of the cables are distal cables that extend from a proximal vertebra through one or more intermediate vertebrae to a distal vertebra, while the remaining cables are medial cables that extend from the proximal vertebra to one or more of the intermediate vertebrae. The cables are actuated by a pivoted plate cable actuator mechanism.
1024 Citations
16 Claims
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1. A medical apparatus comprising:
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a tool shaft having a distal end, a proximal end, and a longitudinal axis extending from the distal end to the proximal end; a wrist having a distal end and a proximal end, the wrist coupled at its proximal end to the distal end of the tool shaft, the wrist being articulable in pitch and in yaw; an end effector coupled to the distal end of the wrist; a frame coupled to the proximal end of the tool shaft; a cable actuator mechanism coupled to the frame, the cable actuator mechanism configured to be movable relative to the frame; and a plurality of transmission cables extending through the tool shaft from the cable actuator mechanism to the wrist, the plurality of transmission cables transmitting motion of the cable actuator mechanism to orient the end effector relative to the longitudinal axis of the tool shaft; wherein the cable actuator mechanism comprises a gimbal assembly, the gimbal assembly configured to be pivotable relative to the frame about at least one axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical apparatus comprising:
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a tool shaft having a distal end, a proximal end, and a longitudinal axis extending from the distal end to the proximal end; a wrist having a distal end and a proximal end, the wrist coupled at its proximal end to the distal end of the tool shaft, the wrist being articulable in pitch and in yaw; an end effector coupled to the distal end of the wrist; a frame coupled to the proximal end of the tool shaft; a cable actuator mechanism coupled to the frame, the cable actuator mechanism configured to be movable relative to the frame; and a plurality of transmission cables extending through the tool shaft from the cable actuator mechanism to the wrist, the plurality of transmission cables transmitting motion of the cable actuator mechanism to orient the end effector relative to the longitudinal axis of the tool shaft; the cable actuator mechanism comprising; a gimbal ring assembly; and an actuating mechanism coupled to the gimbal ring assembly, wherein movement of the actuating mechanism moves the gimbal ring assembly relative to the frame.
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13. A medical apparatus comprising:
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a tool shaft having a distal end, a proximal end, and a longitudinal axis extending from the distal end to the proximal end; a wrist having a distal end and a proximal end, the wrist coupled at its proximal end to the distal end of the tool shaft, the wrist being articulable in pitch and in yaw; an end effector coupled to the distal end of the wrist; a frame coupled to the proximal end of the tool shaft; a cable actuator mechanism coupled to the frame, the cable actuator mechanism configured to be movable relative to the frame; and a plurality of transmission cables extending through the tool shaft from the cable actuator mechanism to the wrist, the plurality of transmission cables transmitting motion of the cable actuator mechanism to orient the end effector relative to the longitudinal axis of the tool shaft; the cable actuator mechanism comprising; a mount; an actuating plate coupled to the mount by linkages, wherein the actuating plate is movable relative to the mount; and an actuating mechanism coupled to the actuating plate, wherein movement of the actuating mechanism moves the actuating plate relative to the frame. - View Dependent Claims (14, 15, 16)
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Specification