Surgical instrument with replaceable loading unit
First Claim
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1. A surgical instrument, comprising:
- a housing including a shaft extending therethrough, the shaft positionable between a locked condition and an unlocked condition;
a loading unit selectively securable to the housing; and
a locking structure including an actuator and a plunger, the actuator movable between a first position and a second position to control the selective securement of the loading unit to the housing, the plunger supporting the shaft in the locked condition when the actuator is in the first position, the plunger being coupled to a first spring that biases the plunger away from the shaft as the actuator moves to the second position, the shaft positionable in the unlocked condition when the actuator is moved to the second position.
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Abstract
A surgical stapling device has an elongated body and a removable loading unit and a securing structure for securing the loading unit onto the elongated body. A guiding ramp guides the movement of the loading unit as it is mounted onto the loading portion. The locking structure has a first position for locking movement of the loading unit and enabling firing rod to engage the loading unit. The locking unit has a second position for allowing the loading unit to be disengaged and removed from the device.
1111 Citations
20 Claims
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1. A surgical instrument, comprising:
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a housing including a shaft extending therethrough, the shaft positionable between a locked condition and an unlocked condition; a loading unit selectively securable to the housing; and a locking structure including an actuator and a plunger, the actuator movable between a first position and a second position to control the selective securement of the loading unit to the housing, the plunger supporting the shaft in the locked condition when the actuator is in the first position, the plunger being coupled to a first spring that biases the plunger away from the shaft as the actuator moves to the second position, the shaft positionable in the unlocked condition when the actuator is moved to the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A surgical instrument, comprising:
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a housing; a loading unit; and an actuator operatively coupled to the housing, the actuator selectively movable between a locking position and an unlocking position to enable the loading unit to be selectively secured to the housing; and a plunger movable between a first position and a second position in response to movement of the actuator between the locking and unlocking positions, the plunger remaining in contact with the actuator in the locking and unlocking positions of the actuator, the loading unit securable to the housing when the plunger is in the first position, the loading unit releasable from the housing when the plunger is in the second position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification