ELECTROSURGICAL CUTTING AND SEALING INSTRUMENTS WITH JAWS HAVING A PARALLEL CLOSURE MOTION
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;
a first push rod member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to the shaft at a first pivot point;
a second push rod member having a distally directed end pivotably coupled to the second jaw member and a proximally directed end pivotably coupled to the shaft at the first pivot point;
a first linkage member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to a second pivot point;
a second linkage member having a distally directed end pivotably coupled to the second jaw member and a proximally directed end pivotably coupled to the second 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 distal motion of the reciprocating member exerts a force on the first and second jaw members causing the first and second jaw members to translate towards one another in a substantially parallel motion.
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 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. 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 end effector may additionally comprise a first push rod member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to the shaft at a first pivot point as well as a first linkage member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to a second pivot point. In this way, distal motion of the reciprocating member may exert a force on the first and second jaw members causing the first and second jaw members to translate towards one another in a substantially parallel motion.
74 Citations
19 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; a first push rod member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to the shaft at a first pivot point; a second push rod member having a distally directed end pivotably coupled to the second jaw member and a proximally directed end pivotably coupled to the shaft at the first pivot point; a first linkage member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to a second pivot point; a second linkage member having a distally directed end pivotably coupled to the second jaw member and a proximally directed end pivotably coupled to the second 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 distal motion of the reciprocating member exerts a force on the first and second jaw members causing the first and second jaw members to translate towards one another in a substantially parallel motion. - 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; 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 coupled to the shaft; a first push rod member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to at least one of the shaft and the second jaw at a first pivot point; a first linkage member having a distally directed end pivotably coupled to the first jaw member and a proximally directed end pivotably coupled to at least one of the shaft and the second jaw at a second 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 distal motion of the reciprocating member exerts a force on the first and second jaw members causing the first jaw member to translate towards the second jaw member in a substantially parallel motion. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification