Narrow Profile Surgical Ligation Clip
First Claim
1. A surgical ligation clip, defining a longitudinal axis and comprising:
- first and second legs each extending along the longitudinal axis and having proximal and distal end portions with respect to said longitudinal axis,a clip hinge joining the first and second legs at a point on their respective proximal end portions, the first and second legs each having inner clamping surfaces between the clip hinge and the distal end portions of said first and second legs, the clamping surfaces being apposed when the clip is in a fully closed position,a first jaw structure on the first leg extending proximal to the clip hinge, the first jaw structure having a first curved inner surface extending from the clip hinge and facing the longitudinal axis and being substantially concave viewed from said axis,a second jaw structure on the second leg extending proximal to the clip hinge and having a second curved inner surface extending from the clip hinge, anda buttress body extending from and connected to the second jaw structure by a first living hinge at a proximal end of said second jaw structure, the buttress body having an outer surface on a proximal first end portion thereof on a proximal end of the clip,the first and second jaw structures being spaced from the longitudinal axis on opposite sides thereof and defining a locking space therebetween, the buttress body being pivotable about the first living hinge to move into the locking space such that a curved planar segment abutment portion of the outer surface of the proximal first end portion of the buttress body abuts against the curved inner surface of the first jaw structure to bias the clip in a closed position.
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Accused Products
Abstract
A narrow profile surgical ligation clip has two legs with clamping surfaces joined by a hinge near the proximal ends, allowing the clip to reversibly open and close. A locking mechanism is proximal to the hinge to bias or lock the clip closed, including first and second jaw structures spaced on opposite sides of a longitudinal axis of the clip thereby defining a locking space therebetween. In one embodiment, a wedge or buttress body pivots by application of an external force applied to a proximal end of the clip towards the hinge to move into the locking space such that one or more outer surfaces or projections of portions of the body fit into or abut against complementary surfaces or other parts of the locking mechanism or clip assembly to bias or lock the clip in a closed position and provide additional closing force to the inner clamping surfaces.
197 Citations
20 Claims
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1. A surgical ligation clip, defining a longitudinal axis and comprising:
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first and second legs each extending along the longitudinal axis and having proximal and distal end portions with respect to said longitudinal axis, a clip hinge joining the first and second legs at a point on their respective proximal end portions, the first and second legs each having inner clamping surfaces between the clip hinge and the distal end portions of said first and second legs, the clamping surfaces being apposed when the clip is in a fully closed position, a first jaw structure on the first leg extending proximal to the clip hinge, the first jaw structure having a first curved inner surface extending from the clip hinge and facing the longitudinal axis and being substantially concave viewed from said axis, a second jaw structure on the second leg extending proximal to the clip hinge and having a second curved inner surface extending from the clip hinge, and a buttress body extending from and connected to the second jaw structure by a first living hinge at a proximal end of said second jaw structure, the buttress body having an outer surface on a proximal first end portion thereof on a proximal end of the clip, the first and second jaw structures being spaced from the longitudinal axis on opposite sides thereof and defining a locking space therebetween, the buttress body being pivotable about the first living hinge to move into the locking space such that a curved planar segment abutment portion of the outer surface of the proximal first end portion of the buttress body abuts against the curved inner surface of the first jaw structure to bias the clip in a closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A surgical ligation clip, defining a longitudinal axis and comprising:
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first and second leg means each extending along the longitudinal axis and having proximal and distal end portions with respect to said longitudinal axis, clip hinge means joining the first and second leg means on respective proximal end portions thereof, the first and second leg means each having inner clamping surface means between the clip hinge means and the distal end portions of said first and second leg means, the clamping surface means being apposed when the clip is in a fully closed position, locking means for biasing the legs closed, said locking means extending proximal to the clip hinge means, the locking means being capable of actuation by application of an external force substantially along said longitudinal axis to a proximal end of the clip which forms an integral portion of said locking means, to move at least one body disposed on the second leg means as a first part of said locking means from a first position to a second position to provide an abutment force between a curved planar surface segment or segments on said body and a complementary surface formed on a second part of said locking means disposed on the first leg means to bias the clip in a closed position.
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19. A method of applying a surgical ligation clip, comprising:
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positioning the clip in an open position proximate an inner anatomical body vessel, the clip having first and second legs each extending along a longitudinal axis of the clip and having proximal and distal end portions with respect to said longitudinal axis, a clip hinge means joining the first and second legs at a point on their respective proximal end portions, the first and second legs each having inner clamping surface means between the clip hinge and the distal end portions of said first and second legs, the clamping surface means being apposed when the clip is in a fully closed position, a locking means for biasing the legs closed extending proximal to the clip hinge means, and applying an external force substantially along the longitudinal axis to a proximal end portion of one of the legs which forms a portion of the locking means, to move a body formed as a first part of said locking means from a first position to a second position to provide an abutment force between a curved planar segment abutment portion of said body and a curved surface formed on a second part of said locking means disposed on the first leg to bias the clip in a closed position. - View Dependent Claims (20)
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Specification