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 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;
a handle, comprising;
an electric motor;
an actuator configured to operate said electric motor; and
a battery configured to supply power to said electric motor;
a firing member, wherein said motor is configured to impart a firing motion to said firing member to eject said fasteners from said fastener cartridge; and
a manually-driven bailout mechanism configured to retract said firing member and to electrically disconnect said battery from said motor when said bailout mechanism is moved from an unused position to a used position.
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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.
4419 Citations
24 Claims
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1. 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; a handle, comprising; an electric motor; an actuator configured to operate said electric motor; and a battery configured to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member to eject said fasteners from said fastener cartridge; and a manually-driven bailout mechanism configured to retract said firing member and to electrically disconnect said battery from said motor when said bailout mechanism is moved from an unused position to a used position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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; a handle, comprising; an electric motor; a battery configured to supply power to said electric motor; and an electrical circuit configured to electrically connect said battery to said electric motor to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member to eject said fasteners from said fastener cartridge; and a refraction system configured to selectively interrupt said electrical circuit to prevent said battery from supplying power to said motor, wherein said retraction system comprises a driver configured to retract said firing member. - View Dependent Claims (14, 15, 16)
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17. A surgical instrument, comprising:
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a handle, comprising; an electric motor; and a power source configured to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member; and means for de-energizing said electric motor when imparting a retraction motion to said firing member.
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18. 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 cartridge support portion configured to receive a fastener cartridge comprising a plurality of fasteners removably stored therein; a handle, comprising; an electric motor; an actuator configured to operate said electric motor; and a battery configured to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member to eject the fasteners from the fastener cartridge, and wherein said motor is also configured to impart a retraction motion to said firing member after said firing motion has been at least partially imparted to said firing member; and a backup mechanical return configured to retract said firing member and electrically decouple said battery from said motor. - View Dependent Claims (19, 20, 21, 22)
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23. 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; a handle, comprising; an electric motor; an actuator configured to operate said electric motor; and a battery configured to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member to eject said fasteners from said fastener cartridge, and wherein said motor is also configured to impart a retraction motion to said firing member after said firing motion has been at least partially imparted to said firing member; and alternative retraction means for retracting said firing member, for permitting said motor to apply said firing motion to said firing member in an unactuated condition, and for de-powering said motor in an actuated condition.
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24. A surgical instrument, comprising:
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a handle, comprising; an electric motor; and a power source configured to supply power to said electric motor; a firing member, wherein said motor is configured to impart a firing motion to said firing member; a manual release for retracting said firing member; and means for de-energizing said electric motor while a retraction motion is applied to said firing member.
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Specification