Endoscopic surgical clip applier
First Claim
1. An apparatus for application of surgical clips to body tissue, which comprises:
- a) a handle portion;
b) a body extending distally from the handle portion and defining a longitudinal axis;
c) a plurality of surgical clips disposed within the body;
d) a jaw assembly mounted adjacent a distal end portion of the body, the jaw assembly including first and second jaw portions movable between a spaced-apart and an approximated position;
e) a feed bar configured to individually distally advance a surgical clip to the jaw assembly while the jaw portions are in the spaced apart position;
f) an actuation mechanism at least partially disposed within the body and longitudinally movable in response to actuation of the handle portion, the actuation mechanism including a first angled surface;
g) a jaw closure member positioned distally of the actuation mechanism and adjacent the first and second jaw portions to move the jaw portions to the approximated position upon longitudinal movement of the actuation mechanism; and
h) a lockout mechanism connected to the feed bar, the lockout mechanism including a second angled surface and being configured and dimensioned to cooperatively engage the first angled surface of the actuation mechanism, wherein re-actuation of the apparatus is prevented and the apparatus is locked upon engagement of the first angled surface and the second angled surface and subsequent to the application of a final surgical clip.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for application of surgical clips to body tissue has a handle portion; a body extending distally from the handle portion; a plurality of surgical clips disposed within the body; and a jaw assembly mounted adjacent a distal end portion of the body. The jaw assembly includes first and second jaw portions movable between a spaced-apart and an approximated position. The apparatus also has a wedge plate longitudinally movable between the first and the second jaw portions, a clip pusher configured to individually distally advance a surgical clip to the jaw assembly while the jaw portions are in the spaced apart position; an actuator at least partially disposed within the body and longitudinally movable in response to actuation of the handle portion; and a jaw closure member positioned adjacent the first and second jaw portions to move the jaw portions to the approximated position.
724 Citations
18 Claims
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1. An apparatus for application of surgical clips to body tissue, which comprises:
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a) a handle portion; b) a body extending distally from the handle portion and defining a longitudinal axis; c) a plurality of surgical clips disposed within the body; d) a jaw assembly mounted adjacent a distal end portion of the body, the jaw assembly including first and second jaw portions movable between a spaced-apart and an approximated position; e) a feed bar configured to individually distally advance a surgical clip to the jaw assembly while the jaw portions are in the spaced apart position; f) an actuation mechanism at least partially disposed within the body and longitudinally movable in response to actuation of the handle portion, the actuation mechanism including a first angled surface; g) a jaw closure member positioned distally of the actuation mechanism and adjacent the first and second jaw portions to move the jaw portions to the approximated position upon longitudinal movement of the actuation mechanism; and h) a lockout mechanism connected to the feed bar, the lockout mechanism including a second angled surface and being configured and dimensioned to cooperatively engage the first angled surface of the actuation mechanism, wherein re-actuation of the apparatus is prevented and the apparatus is locked upon engagement of the first angled surface and the second angled surface and subsequent to the application of a final surgical clip.
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2. The apparatus of claim 1, wherein the lockout mechanism is directly and fixedly connected to the feed bar.
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3. The apparatus of claim 1, wherein the lockout mechanism includes a wedge member disposed within the body, the wedge member being longitudinally movable through the body between a proximal-most position and a distal-most position.
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4. The apparatus of claim 3, wherein the wedge member includes the first angled surface and the actuation mechanism includes the second angled surface, the first angled surface being configured to engage the second angled surface, wherein the first and second angled surfaces are in engagement when the wedge member is in the distal-most position to substantially prevent proximal retraction of the actuation mechanism.
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5. The apparatus of claim 1, further comprising a follower disposed proximally of the plurality of surgical clips and being adapted to urge the plurality of surgical clips distally.
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6. The apparatus of claim 5, wherein the follower is longitudinally movable between a proximal-most position and a distal-most position, the follower including an abutment surface, the abutment surface being configured to engage a protrusion when the follower is in the distal-most position and to substantially prevent proximal retraction of the follower.
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7. The apparatus of claim 6, wherein the feed bar includes a pusher, the pusher being configured to engage the follower upon retraction of the feed bar relative to the follower and substantially prevent retraction of the feed bar.
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8. An apparatus for application of surgical clips to body tissue, the apparatus comprising:
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a) a handle portion; b) a body extending distally from the handle portion and defining a longitudinal axis; c) a plurality of surgical clips disposed within the body; d) a jaw assembly mounted adjacent a distal end portion of the body, the jaw assembly including first and second jaw portions movable between a spaced-apart and an approximated position; and e) a feed bar configured to individually distally advance a surgical clip to the jaw assembly while the jaw portions are in the spaced apart position, wherein subsequent to the application of a final surgical clip, a pusher of the feed bar is wedged between a distal-most surface of a clip follower and an inner surface of the body, such that the feed bar is prevented from proximal retraction to prevent re-actuation of the apparatus.
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9. The apparatus of claim 8, further comprising an actuation mechanism at least partially disposed within the body and longitudinally movable in response to actuation of the handle portion.
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10. The apparatus of claim 9, further comprising a jaw closure member positioned distally of the actuation mechanism and adjacent the first and second jaw portions to move the jaw portions to the approximated position upon longitudinal movement of the actuation mechanism.
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11. The apparatus of claim 8, wherein the pusher is affixed to a distal end of the feed bar.
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12. The apparatus of claim 8, wherein the clip follower is disposed proximally of the plurality of surgical clips and adapted to urge the plurality of surgical clips distally.
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13. The apparatus of claim 12, wherein the clip follower is longitudinally movable between a proximal-most position and a distal-most position, the clip follower including an abutment surface configured to engage a protrusion when the clip follower is in the distal-most position and to substantially prevent proximal retraction of the clip follower.
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14. The apparatus of claim 13, wherein a proximal end of the pusher is configured and dimensioned to engage a distal end of the clip follower upon retraction of the feed bar relative to the follower such that retraction of the feed bar is substantially prevented.
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15. An apparatus for application of surgical clips to body tissue, the apparatus comprising:
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a) a body defining a longitudinal axis, and having proximal and distal ends; b) a plurality of surgical clips disposed within the body; c) a jaw assembly mounted adjacent the distal end of the body, the jaw assembly being configured and dimensioned to deform the surgical clips about the tissue; d) a feed bar configured to advance the surgical clips into the jaw assembly; e) an actuation mechanism at least partially movable through the body; f) a jaw closure member positioned distally of the actuation mechanism and adjacent the jaw assembly; and g) a lockout mechanism connected to the feed bar, the lockout mechanism being configured and dimensioned to engage the actuation mechanism, whereby re-actuation of the apparatus is prevented and the apparatus is locked upon engagement of the lockout mechanism and the actuation mechanism.
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16. The apparatus of claim 15, wherein the feed bar is configured and dimensioned to individually advance the surgical clips in a distal direction.
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17. The apparatus of claim 15, wherein the jaw closure member is configured and dimensioned to reposition the jaw assembly between an open position and a closed position upon movement of the actuation mechanism.
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18. The apparatus of claim 17, wherein the actuation mechanism includes a first angled surface, and the lockout mechanism includes a second angled surface configured and dimensioned for engagement with the first angled surface to prevent re-actuation of the apparatus subsequent to application of a final surgical clip.
Specification