Electrosurgical cutting and sealing instruments with cam-actuated jaws
First Claim
1. A surgical instrument comprising:
- a handle;
a shaft coupled to the handle and extending distally along a longitudinal axis;
an end effector positioned at a distal end of the shaft, wherein the end effector comprises;
a first jaw member defining a first longitudinal slot;
a second jaw member defining a second longitudinal slot, the second jaw member pivotable towards the first jaw member about a pivot point and comprising a cam pin positioned offset from the pivot point; and
a reciprocating member translatable distally and proximally parallel to the longitudinal axis through the first longitudinal slot and the second longitudinal slot, wherein a distal portion of the reciprocating member defines a blade, wherein the reciprocating member defines a cam slot for receiving the cam pin, wherein distal motion of the reciprocating member exerts a force on the cam pin such that the second jaw member pivots towards the first jaw member, and wherein proximal motion of the reciprocating member exerts a force on the cam pin such that the second jaw member pivots away from the first jaw member.
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Accused Products
Abstract
Various embodiments are directed to a surgical instrument comprising, a shaft, and an end effector. The shaft may be coupled to the handle and may extend distally along a longitudinal axis. The end effector may be positioned at a distal end of the shaft and may comprise first and second jaw members and a reciprocating member. The first and second jaw members may define first and second longitudinal slots. One or both of the jaw members may be pivotable relative to the other about a pivot point. The reciprocating member may be translatable distally and proximally parallel to the longitudinal axis and through the first and second longitudinal slots. A distal portion of the reciprocating member may define a blade. The instrument may comprise an overtube translatable distally to exert a force on a portions of the first and second jaw members tending to close the first and second jaw members.
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Citations
20 Claims
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1. A surgical instrument comprising:
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a handle; a shaft coupled to the handle and extending distally along a longitudinal axis; an end effector positioned at a distal end of the shaft, wherein the end effector comprises; a first jaw member defining a first longitudinal slot; a second jaw member defining a second longitudinal slot, the second jaw member pivotable towards the first jaw member about a pivot point and comprising a cam pin positioned offset from the pivot point; and a reciprocating member translatable distally and proximally parallel to the longitudinal axis through the first longitudinal slot and the second longitudinal slot, wherein a distal portion of the reciprocating member defines a blade, wherein the reciprocating member defines a cam slot for receiving the cam pin, wherein distal motion of the reciprocating member exerts a force on the cam pin such that the second jaw member pivots towards the first jaw member, and wherein proximal motion of the reciprocating member exerts a force on the cam pin such that the second jaw member pivots away from the first jaw member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surgical instrument comprising:
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a handle; a shaft coupled to the handle and extending distally along a longitudinal axis; and an end effector positioned at a distal end of the shaft, wherein the end effector comprises; a first jaw member defining a first longitudinal slot; a second jaw member defining a second longitudinal slot, the second jaw member pivotable relative to the first jaw member about a pivot point; and a reciprocating member comprising; an I-beam member translatable distally and proximally relative to the longitudinal axis through the first longitudinal slot and the second longitudinal slot; and a blade member translatable distally and proximally separately from the I-beam member. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification