Electrosurgical cutting and sealing instruments with cam-actuated jaws
First Claim
1. A surgical instrument comprising:
- an end effector comprising;
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
a cam pin coupled to the second jaw member and positioned offset from the pivot point; and
a reciprocating member translatable distally and proximally 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 to pivot the second jaw member towards the first jaw member, and wherein proximal motion of the reciprocating member exerts a force on the cam pin to pivot the second jaw member away from the first jaw member;
wherein the cam slot comprises a distal portion, a proximal portion vertically offset from the distal portion, and a transition portion connecting the distal portion of the cam slot and the proximal portion, the transition portion angled relative to a longitudinal axis along which the reciprocating member is translatable.
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0 Petitions
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.
1036 Citations
11 Claims
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1. A surgical instrument comprising:
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an end effector comprising; 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 a cam pin coupled to the second jaw member and positioned offset from the pivot point; and a reciprocating member translatable distally and proximally 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 to pivot the second jaw member towards the first jaw member, and wherein proximal motion of the reciprocating member exerts a force on the cam pin to pivot the second jaw member away from the first jaw member; wherein the cam slot comprises a distal portion, a proximal portion vertically offset from the distal portion, and a transition portion connecting the distal portion of the cam slot and the proximal portion, the transition portion angled relative to a longitudinal axis along which the reciprocating member is translatable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification