Working mechanism and manipulator
First Claim
1. A working mechanism mounted on a distal end of a manipulator for use in laparoscopic surgery, the working mechanism comprising:
- a first flexible power transmitting member;
a first tubular member, said first flexible power transmitting member being wound around said first tubular member, said first tubular member being rotatable about a first axis;
a second flexible power transmitting member disposed substantially parallel to said first flexible power transmitting member;
a second tubular member rotatable about a second axis extending substantially parallel to said first tubular member, said second flexible power transmitting member being wound around said second tubular member;
a third flexible power transmitting member;
a third tubular member, said third tubular member being disposed adjacent the second tubular member and rotatable about the second axis the third member is substantially parallel to the first axis and the second axis, said third flexible power transmitting member being wound around said third tubular member;
a driven rotor having a rotational axis extending substantially parallel to said first tubular member;
a first rotation transmitting mechanism for transmitting rotation of said first tubular member to said driven rotor;
a first acting unit operable in an opening and closing direction based on rotation of said driven rotor and the first tubular member rotated by the first flexible power transmitting member; and
a second acting unit operable in a yawing direction and a rolling direction,wherein the second acting unit operates in the yawing direction based on rotation of said second tubular member rotated by the second flexible power transmitting member, andthe second acting unit operates in the rolling direction based on rotation of the third tubular member rotated by the third flexible power transmitting member.
3 Assignments
0 Petitions
Accused Products
Abstract
A working unit includes a gear body disposed forwardly of a tubular member around which a wire is wound and having a rotational axis disposed substantially parallel to the tubular member, and a first gear and a second gear for transmitting rotation of a gear body to another gear body. The numbers of turns of wires, the size of a main shaft, and the size of a gear body, which are positioned forwardly of the tubular member, have no adverse effect on the manner in which a wire is wound around the tubular member. The wire can be wound around the tubular member over a wide region thereof for increasing the angular displacement of the gear body. The increased angular displacement of the gear body makes it possible to increase the angular displacement and rotational torque of the gear body.
972 Citations
8 Claims
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1. A working mechanism mounted on a distal end of a manipulator for use in laparoscopic surgery, the working mechanism comprising:
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a first flexible power transmitting member; a first tubular member, said first flexible power transmitting member being wound around said first tubular member, said first tubular member being rotatable about a first axis; a second flexible power transmitting member disposed substantially parallel to said first flexible power transmitting member; a second tubular member rotatable about a second axis extending substantially parallel to said first tubular member, said second flexible power transmitting member being wound around said second tubular member; a third flexible power transmitting member; a third tubular member, said third tubular member being disposed adjacent the second tubular member and rotatable about the second axis the third member is substantially parallel to the first axis and the second axis, said third flexible power transmitting member being wound around said third tubular member; a driven rotor having a rotational axis extending substantially parallel to said first tubular member; a first rotation transmitting mechanism for transmitting rotation of said first tubular member to said driven rotor; a first acting unit operable in an opening and closing direction based on rotation of said driven rotor and the first tubular member rotated by the first flexible power transmitting member; and a second acting unit operable in a yawing direction and a rolling direction, wherein the second acting unit operates in the yawing direction based on rotation of said second tubular member rotated by the second flexible power transmitting member, and the second acting unit operates in the rolling direction based on rotation of the third tubular member rotated by the third flexible power transmitting member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A manipulator for use in laparoscopic surgery including a working mechanism mounted on a distal end thereof, the manipulator comprising:
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a first input member; a second input member; a first rotational source rotatable in response to operation of said first input member; and a second rotational source rotatable in response to operation of said second input member; the working mechanism comprising; a first flexible power transmitting member including a rear portion wound around said first rotational source and a front portion wound in a plurality of turns around a first tubular member; the first tubular member, the first flexible power transmitting member being wound around the first tubular member, the first tubular member being rotatable about a first axis, a second flexible power transmitting member disposed substantially parallel to said first flexible power transmitting member and extending forwardly on both sides of said first rotational source, said second flexible power transmitting member including a rear portion wound around said second rotational source, said second flexible power transmitting member being wound around a second tubular member disposed forwardly of said first tubular member; the second tubular member rotatable about a second axis extending substantially parallel to the first tubular member, the second flexible power transmitting member being wound around the second tubular member; a third flexible power transmitting member; a third tubular member, said third tubular member being disposed adjacent the second tubular member and rotatable about the second axis the third tubular member is substantially parallel to the first axis and the second axis, said third flexible power transmitting member being wound around said third tubular member; a driven rotor disposed forwardly of said first tubular member and having a rotational axis disposed substantially parallel to said first tubular member; a rotation transmitting mechanism for transmitting rotation of said first tubular member to said driven rotor; a first acting unit operable in an opening and closing direction based on rotation of said driven rotor and the first tubular member rotatable by the first flexible power transmitting member; and a second acting unit operable in a yawing direction and a rolling direction, wherein the second acting unit operates in the yawing direction based on rotation of said second tubular member rotated by the second flexible power transmitting member, and the second acting unit operates in the rolling direction based on rotation of the third tubular member rotated by the third flexible power transmitting member.
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Specification