Surgical instrument with stamped double-flag jaws and actuation mechanism
First Claim
1. A surgical instrument, comprising:
- a housing;
an elongated shaft including a proximal portion coupled to the housing and a distal portion opposite the proximal portion, the elongated shaft defining a longitudinal axis;
a drive rod extending at least partially through the elongated shaft, the drive rod selectively movable in a longitudinal direction with respect to the elongated shaft;
a cam pin supported by the drive rod such that longitudinal movement of the drive rod is imparted to the cam pin, andan end effector supported by the distal portion of the elongated shaft, the end effector adapted for treating tissue, and comprising;
an upper jaw member pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a first pair of laterally spaced flanges each defining a camming slot for engaging the cam pin; and
a lower jaw member pivotally coupled to the distal portion of the elongated shaft about the pivot axis and including a second pair of laterally spaced flanges each defining a camming slot for engaging the cam pin, wherein the first and second pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member, wherein the drive rod exhibits a generally u-shaped profile and extends through the jaw members on a laterally interior side of each of the flanges.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument includes a housing that supports an elongated shaft. A selectively movable drive rod extends through the elongated shaft and carries a cam pin in a longitudinal direction. An end effector for surgically treating tissue is supported by the elongated shaft and includes upper and lower jaw members pivotally coupled to one another about a pivot axis. The upper jaw member includes a first pair of laterally spaced flanges, and the lower jaw member includes a second pair of laterally spaced flanges defining a camming slot for engaging the cam pin. The flanges are arranged in an offset configuration where one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member.
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Citations
12 Claims
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1. A surgical instrument, comprising:
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a housing; an elongated shaft including a proximal portion coupled to the housing and a distal portion opposite the proximal portion, the elongated shaft defining a longitudinal axis; a drive rod extending at least partially through the elongated shaft, the drive rod selectively movable in a longitudinal direction with respect to the elongated shaft; a cam pin supported by the drive rod such that longitudinal movement of the drive rod is imparted to the cam pin, and an end effector supported by the distal portion of the elongated shaft, the end effector adapted for treating tissue, and comprising; an upper jaw member pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a first pair of laterally spaced flanges each defining a camming slot for engaging the cam pin; and a lower jaw member pivotally coupled to the distal portion of the elongated shaft about the pivot axis and including a second pair of laterally spaced flanges each defining a camming slot for engaging the cam pin, wherein the first and second pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member, wherein the drive rod exhibits a generally u-shaped profile and extends through the jaw members on a laterally interior side of each of the flanges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical instrument, comprising:
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a housing; an elongated shaft including a proximal portion coupled to the housing and a distal portion opposite the proximal portion, the elongated shaft defining a longitudinal axis; an end effector supported by the distal portion of the elongated shaft, the end effector adapted for treating tissue and including first and second jaw members pivotally coupled to one another to move between open and closed configurations, wherein each of the jaw members includes a pair of laterally spaced flanges, and wherein each of the flanges includes a camming surface thereon; a knife extending at least partially through the elongated shaft and selectively movable in a longitudinal direction between the flanges of the jaw members, a blade of the knife extendable into a tissue contacting portion of the jaw members; and a drive rod extending at least partially through the elongated shaft and selectively movable in a longitudinal direction with respect to the knife and with respect to the elongated shaft, the drive rod carrying a cam pin positioned to engage the camming surface of each of the flanges to induce the jaw members to move between the open and closed configurations, the drive rod substantially surrounding the knife on four lateral sides to restrict motion of the knife in at least two orthogonal planes, wherein the laterally spaced flanges of the jaw members are arranged in a nestled configuration wherein both of the flanges of one of the jaw members are arranged within a laterally interior side of the laterally spaced flanges of the other of the jaw members and wherein the drive rod is constructed of metal folded to exhibit a generally u-shaped profile extending around the four lateral sides of the knife. - View Dependent Claims (11, 12)
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Specification