Endoscopic medical instrument and related methods of use
First Claim
Patent Images
1. A medical instrument, comprising:
- a tubular member having a distal end and a proximal end;
a handle attached to the proximal end of the tubular member;
a pair of end effectors supported on a pivot portion;
an elongate member corresponding to each of the pair of end effectors, each elongate member extending through the tubular member and having a proximal end attached to the handle and a distal end coupled to the corresponding end effector, anda clevis attached to the distal end of the tubular member, wherein the clevis has a center axis and a pair of stops, each stop configured to prevent rotation of a corresponding end effector past the center axis, wherein the stops are formed in distalmost surfaces of the clevis,wherein each end effector includes a first stop surface and a second stop surface, wherein each of the first and second stop surfaces is proximal of a portion of the end effector defining a cutting edge, wherein the first stop surface of each of the pair of end effectors is a proximally facing wall, andwherein substantially the entire wall of the first stop surface of one of the end effectors contacts the second stop surface of the other of the end effectors at a maximum opening of the end effectors.
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Abstract
A medical instrument has a tubular member having a distal end and a proximal end, a handle attached to the proximal end of the tubular member, a distal assembly including a pivot and an end effector assembly supported on the pivot. The end effector assembly has a pair of end effectors. The medical instrument also includes an elongate member corresponding to each of the pair of end effectors. Each elongate member extends through the tubular member and has a proximal end attached to the handle and a distal end attached to the end effector assembly.
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Citations
47 Claims
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1. A medical instrument, comprising:
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a tubular member having a distal end and a proximal end; a handle attached to the proximal end of the tubular member; a pair of end effectors supported on a pivot portion; an elongate member corresponding to each of the pair of end effectors, each elongate member extending through the tubular member and having a proximal end attached to the handle and a distal end coupled to the corresponding end effector, and a clevis attached to the distal end of the tubular member, wherein the clevis has a center axis and a pair of stops, each stop configured to prevent rotation of a corresponding end effector past the center axis, wherein the stops are formed in distalmost surfaces of the clevis, wherein each end effector includes a first stop surface and a second stop surface, wherein each of the first and second stop surfaces is proximal of a portion of the end effector defining a cutting edge, wherein the first stop surface of each of the pair of end effectors is a proximally facing wall, and wherein substantially the entire wall of the first stop surface of one of the end effectors contacts the second stop surface of the other of the end effectors at a maximum opening of the end effectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A medical instrument, comprising:
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a tubular member having a distal end and a proximal end; a handle attached to the proximal end of the tubular member; a distal assembly including a pivot portion and an end effector assembly supported on the pivot portion, the end effector assembly having a pair of end effectors, the distal assembly having a center axis and a pair of stops, each stop configured to prevent rotation of a corresponding end effector past the center axis; and an elongate member corresponding to each of the pair of end effectors, each elongate member extending through the tubular member and having a proximal end attached to the handle and a distal end attached to the end effector assembly in a manner permitting positioning of one of the end effectors at a first angle relative to the center axis when the other of the end effectors is positioned at a second angle relative to the center axis that is different than the first angle, wherein the distal assembly further comprises a clevis attached to the distal end of the tubular member, wherein the pair of stops are disposed distal to a throughhole of the clevis about which the pair of end effectors pivot, and wherein the stops are formed in distalmost surfaces of the clevis. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A medical instrument, comprising:
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a tubular member having a distal end and a proximal end; a handle attached to the proximal end of the tubular member; a clevis coupled to the distal end of the tubular member so as to be stationary relative to the tubular member, the clevis defining first and second through holes extending through an interior of a body portion of the clevis, the first and second through holes each offset from and parallel to a centerline of the clevis; a pair of end effectors supported on a pivot portion of the clevis; a first elongate member corresponding to one of the pair of end effectors, extending through the tubular member and the first through hole, and having a proximal end attached to the handle; and a second elongate member corresponding to the other of the pair of end effectors, extending through the tubular member and the second through hole, and having a proximal end attached to the handle, wherein portions of the pair of end effectors are disposed between arms of the clevis, and wherein the clevis has a pair of stops formed in distalmost surfaces of the clevis and configured to prevent rotation of a corresponding end effector past the centerline. - View Dependent Claims (43, 44, 45, 46, 47)
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Specification