Powered surgical cutting and stapling apparatus with manually retractable firing system
First Claim
Patent Images
1. A surgical fastening apparatus, comprising:
- an end effector comprising a firing member, wherein said firing member is movable between a starting position and an ending position within said end effector;
a rotary drive shaft operably interfacing with said movable firing member such that rotation of said rotary drive shaft in a first rotary output direction causes said movable firing member to linearly advance in a distal direction within said end effector and rotation of said rotary drive shaft in a second rotary output direction causes said movable firing member to linearly retract in a proximal direction within said end effector;
a motor mechanically coupleable with said rotary drive shaft such that operation of said motor in a first rotary input direction causes said rotary drive shaft to rotate in said first rotary output direction and operation of said motor in a second rotary input direction causes said rotary drive shaft to rotate in said second rotary output direction; and
a manually actuatable bailout system configured to selectively mechanically decouple said motor from said rotary drive shaft and manually apply rotary control motions to said rotary drive shaft in said second rotary output direction.
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Abstract
In one general aspect, various embodiments of the present invention can include a motorized surgical cutting and fastening instrument having a drive shaft, a motor selectively engageable with the drive shaft, and a manual return mechanism configured to operably disengage the motor from the drive shaft and retract the drive shaft. In at least one embodiment, a surgeon, or other operator of the surgical instrument, can utilize the manual return mechanism to retract the drive shaft after it has been advanced, especially when the motor, or a power source supplying the motor, has failed or is otherwise unable to provide a force sufficient to retract the drive shaft.
4579 Citations
19 Claims
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1. A surgical fastening apparatus, comprising:
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an end effector comprising a firing member, wherein said firing member is movable between a starting position and an ending position within said end effector; a rotary drive shaft operably interfacing with said movable firing member such that rotation of said rotary drive shaft in a first rotary output direction causes said movable firing member to linearly advance in a distal direction within said end effector and rotation of said rotary drive shaft in a second rotary output direction causes said movable firing member to linearly retract in a proximal direction within said end effector; a motor mechanically coupleable with said rotary drive shaft such that operation of said motor in a first rotary input direction causes said rotary drive shaft to rotate in said first rotary output direction and operation of said motor in a second rotary input direction causes said rotary drive shaft to rotate in said second rotary output direction; and a manually actuatable bailout system configured to selectively mechanically decouple said motor from said rotary drive shaft and manually apply rotary control motions to said rotary drive shaft in said second rotary output direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical fastening apparatus, comprising:
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an end effector, comprising; a first jaw; a second jaw, wherein said first jaw is movable relative to said second jaw between an open position and a closed position; and a fastener cartridge comprising a plurality of fasteners removably stored therein; and a firing member movable between a starting position and an ending position within said end effector; a handle; a rotary drive shaft operably interfacing with said movable firing member such that rotation of said rotary drive shaft in a first rotary output direction causes said movable firing member to linearly advance in a distal direction within said end effector and rotation of said rotary drive shaft in a second rotary output direction causes said movable firing member to linearly retract in a proximal direction within said end effector; an electric motor supported by said handle and being mechanically coupleable with said rotary drive shaft such that operation of said electric motor in a first rotary input direction causes said rotary drive shaft to rotate in said first rotary output direction and operation of said electric motor in a second rotary input direction causes said rotary drive shaft to rotate in said second rotary output direction; a battery supported by said handle and being configured to supply power to said electric motor; and a manually actuatable bailout system supported by said handle and being configured to selectively mechanically decouple said electric motor from said rotary drive shaft and manually apply rotary control motions to said rotary drive shaft in said second rotary output direction. - View Dependent Claims (12, 13)
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14. A surgical fastening apparatus, comprising:
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an end effector comprising a firing member, wherein said firing member is movable between a starting position and an ending position within said end effector; a rotary drive shaft operably interfacing with said movable firing member such that rotation of said rotary drive shaft in a first rotary output direction causes said movable firing member to linearly advance in a distal direction within said end effector and rotation of said rotary drive shaft in a second rotary output direction causes said movable firing member to linearly retract in a proximal direction within said end effector; a motor mechanically coupleable with said rotary drive shaft such that operation of said motor in a first rotary input direction causes said rotary drive shaft to rotate in said first rotary output direction and operation of said motor in a second rotary input direction causes said rotary drive shaft to rotate in said second rotary output direction; and a manually actuatable means for selectively mechanically decoupling said motor from said rotary drive shaft and manually applying rotary control motions to said rotary drive shaft in said second rotary output direction. - View Dependent Claims (15, 16, 17, 18)
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19. A surgical instrument, comprising:
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an end effector comprising a firing member, wherein said firing member is movable between a starting position and an ending position; a rotatable drive shaft operably interfacing with said firing member such that the rotation of said rotatable drive shaft in a first rotary drive direction causes said firing member to advance in a distal direction and the rotation of said rotatable drive shaft in a second rotary drive direction causes said firing member to retract in a proximal direction; an electric motor configured to be operated to selectively rotate said rotatable drive shaft in said first rotary drive direction and said second rotary drive direction; and a manually actuatable bailout system configured to selectively mechanically decouple said electric motor from said rotatable drive shaft and manually rotate said rotatable drive shaft in said second rotary drive direction.
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Specification