Powered surgical instruments with firing system lockout arrangements
First Claim
1. A surgical instrument comprising:
- a handle;
an end effector, the end effector comprising a pair of jaws having an open position and a closed position, wherein at least one of the jaws comprises a channel for receiving a cartridge containing a plurality of surgical fasteners;
an electrically powered actuator for deploying the surgical fasteners, the actuator comprising a power source and a motor;
an activation mechanism attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator, wherein the activation mechanism comprises;
a first trigger attached to the handle and communicating with the end effector such that when the first trigger is in a fully actuated position, the end effector is moved from the open to the closed position;
a second trigger attached to the handle for activating the actuator;
a latch operably mounted to one of the handle and the first trigger for releasably retaining the first trigger in the fully actuated position; and
a lockout mechanism configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing from the power source to the motor when the pair of jaws is in the open position, wherein the lockout mechanism comprises a closure lock switch associated with the latch, the closure lock switch connected to the power source and the motor such that when the latch retains the first trigger in the fully actuated position, the closure lock switch permits current to flow from the power source to the motor and when the first trigger is not latched in the fully actuated position, the closure lock switch prevents current from flowing from the power source to the motor.
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Accused Products
Abstract
Surgical instruments and/or fastener apparatuses comprising an end effector with a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position. At least one of the jaws may comprise a channel for receiving a cartridge containing a plurality of surgical fasteners. Also, an electrically powered actuator may be for deploying the surgical fasteners and may comprise a power source and a motor. An activation mechanism may be attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator. A lockout mechanism may be configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing from the power source to the motor when the pair of jaws is in the open position.
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Citations
12 Claims
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1. A surgical instrument comprising:
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a handle; an end effector, the end effector comprising a pair of jaws having an open position and a closed position, wherein at least one of the jaws comprises a channel for receiving a cartridge containing a plurality of surgical fasteners; an electrically powered actuator for deploying the surgical fasteners, the actuator comprising a power source and a motor; an activation mechanism attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator, wherein the activation mechanism comprises; a first trigger attached to the handle and communicating with the end effector such that when the first trigger is in a fully actuated position, the end effector is moved from the open to the closed position; a second trigger attached to the handle for activating the actuator; a latch operably mounted to one of the handle and the first trigger for releasably retaining the first trigger in the fully actuated position; and a lockout mechanism configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing from the power source to the motor when the pair of jaws is in the open position, wherein the lockout mechanism comprises a closure lock switch associated with the latch, the closure lock switch connected to the power source and the motor such that when the latch retains the first trigger in the fully actuated position, the closure lock switch permits current to flow from the power source to the motor and when the first trigger is not latched in the fully actuated position, the closure lock switch prevents current from flowing from the power source to the motor. - View Dependent Claims (2, 3, 5, 6)
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4. A surgical instrument comprising:
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a handle; an end effector, the end effector comprising a pair of jaws having an open position and a closed position, wherein at least one of the jaws comprises a channel for receiving a cartridge containing a plurality of surgical fasteners; and an electrically powered actuator for deploying the surgical fasteners, the actuator comprising a power source and a motor; an activation mechanism attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator, wherein the activation mechanism comprises a firing trigger and a closure trigger, and wherein the closure trigger has a first position to cause the pair of jaws to assume the open position and a second position to cause the pair of jaws to assume the closed position; and a lockout mechanism configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing from the power source to the motor when the pair of jaws is in the open position, wherein; the lockout mechanism comprises a run motor sensor, wherein the run motor sensor is positioned to permit current to flow from the power source to the motor upon actuation by the firing trigger; and the firing trigger and closure trigger are relatively positioned such that actuation of the firing trigger causes actuation of the run motor sensor when the closure trigger is in the second position, and that actuation of the firing trigger does not cause actuation of the run motor sensor when the closure trigger is in the first position. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification