Apparatus for forming variable height surgical fasteners
First Claim
1. A surgical apparatus comprising:
- a housing including an actuating mechanism;
an elongate tubular member extending distally from the housing;
a staple fastening assembly located at a distal end of the elongate tubular member, the staple fastening assembly including a first jaw and a second jaw, the first jaw including a plurality of fasteners and a driving assembly, the second jaw including an anvil, the first jaw including at least one movable member disposed therein, the at least one movable member being selectively actuated for interacting with a portion of a surgical fastener;
a jaw driving assembly, the jaw driving assembly operatively coupled to the actuating mechanism such that actuation of the actuating mechanism moves one of the first and second jaws towards the other of the first and second jaws; and
at least one sled assembly, the sled assembly including first and second sleds, the first sled including a longitudinal passage therethrough for slidably receiving the second sled, wherein longitudinal translation of the first sled through the plurality of fasteners sequentially ejects the surgical fasteners and longitudinal translation of the second sled through the plurality of fasteners moves the at least one movable member towards the tissue contacting surface of the first jaw, the at least one movable member moving in a direction that is transverse to a longitudinal axis of the first jaw, and longitudinal translation of the first sled precedes longitudinal translation of the second sled defining a delay.
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Accused Products
Abstract
A surgical device for applying a plurality of surgical staples is provided. The device includes a staple fastening assembly attached to a surgical instrument. The staple fastening assembly includes a pair of cooperating jaws, a jaw operating mechanism, and a gap sensor. A staple magazine having a plurality of staples and an anvil member having a plurality of staple pockets are attached to the jaws. The staple magazine includes a staple crimping cam and a staple dimpling cam that are operatively coupled to the surgical instrument. The jaw operating mechanism is operatively connected to a drive assembly in the surgical instrument for moving the jaws for automatically setting a tissue gap between the cooperating jaws. The gap sensor cooperates with the jaw operating mechanism for controlling staple formation.
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Citations
11 Claims
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1. A surgical apparatus comprising:
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a housing including an actuating mechanism; an elongate tubular member extending distally from the housing; a staple fastening assembly located at a distal end of the elongate tubular member, the staple fastening assembly including a first jaw and a second jaw, the first jaw including a plurality of fasteners and a driving assembly, the second jaw including an anvil, the first jaw including at least one movable member disposed therein, the at least one movable member being selectively actuated for interacting with a portion of a surgical fastener; a jaw driving assembly, the jaw driving assembly operatively coupled to the actuating mechanism such that actuation of the actuating mechanism moves one of the first and second jaws towards the other of the first and second jaws; and at least one sled assembly, the sled assembly including first and second sleds, the first sled including a longitudinal passage therethrough for slidably receiving the second sled, wherein longitudinal translation of the first sled through the plurality of fasteners sequentially ejects the surgical fasteners and longitudinal translation of the second sled through the plurality of fasteners moves the at least one movable member towards the tissue contacting surface of the first jaw, the at least one movable member moving in a direction that is transverse to a longitudinal axis of the first jaw, and longitudinal translation of the first sled precedes longitudinal translation of the second sled defining a delay. - View Dependent Claims (2, 3, 4)
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5. A surgical apparatus comprising:
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a housing including an actuating mechanism; an elongate tubular member extending distally from the housing; a staple fastening assembly located at a distal end of the elongate tubular member, the staple fastening assembly including first and second jaws, the first jaw including a fastener driving assembly operatively associated with the actuating mechanism, the fastener driving assembly having first and second sleds, the first sled having a longitudinal passage therethrough for slidably receiving the second sled, the second jaw including an anvil; a plurality of fasteners and a corresponding number of ejector assemblies disposed in the first jaw, each ejector assembly including a fastener ejector and a movable member, wherein the first sled translates distally in response to actuation of the fastener driving assembly and the second sled remains stationary; and a jaw driving assembly operatively coupled to the actuating mechanism. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification