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, wherein the first jaw member comprises a first cam track defining a first cam slot; and
a second jaw member defining a second longitudinal slot, wherein the second jaw member is pivotable towards the first jaw member about a jaw pivot point, and wherein the second jaw member comprises a second cam track defining a second cam slot;
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;
a shuttle translatable distally and proximally parallel to the longitudinal axis; and
at least one cam pin coupled to the shuttle and positioned within the first cam slot and the second cam slot.
4 Assignments
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 an longitudinal axis. The end effector may be positioned at a distal end of the shaft and may comprise first and second jaw members, a reciprocating member, a shuttle and at least one cam pin. The first and second jaw members may define first and second longitudinal slots and first and second cam slots and may be pivotable towards one another 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 shuttle may be translatable distally and proximally parallel to the longitudinal axis. The cam pin may be coupled to the shuttle and positioned within the first cam slot and the second cam slots.
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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, wherein the first jaw member comprises a first cam track defining a first cam slot; and a second jaw member defining a second longitudinal slot, wherein the second jaw member is pivotable towards the first jaw member about a jaw pivot point, and wherein the second jaw member comprises a second cam track defining a second cam slot; 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; a shuttle translatable distally and proximally parallel to the longitudinal axis; and at least one cam pin coupled to the shuttle and positioned within the first cam slot and the second cam slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. 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, wherein the second jaw member is pivotable towards the first jaw member about a jaw pivot point, and wherein the first jaw member and the second jaw member are biased to an open position; 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; and a reciprocating overtube translatable distally and proximally over the shaft parallel to the longitudinal axis, where distal motion of the overtube causes the first and second jaw member to pivot towards the longitudinal axis.
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Specification