Medical devices having tissue grasping surfaces and features for manipulating surgical needles
A medical device includes a clevis, a first jaw, and a second jaw. The first jaw includes a first proximal gripping portion and a first distal gripping portion, and the first proximal gripping portion includes a first needle alignment portion. The second jaw is coupled to the clevis and includes a second proximal gripping portion and a second distal gripping portion, and the second proximal gripping portion includes a second needle alignment portion. The first and second needle alignment portions are located opposite each other when in the closed orientation. The first and second needle alignment portions define a clamp path when in the closed orientation within which the curved portion of the needle is received when the second jaw is in the open orientation. The first and second needle alignment portions are configured to rotate the needle when moving to the closed orientation.
1. An apparatus, comprising:
a clevis;
a first jaw coupled to the clevis, the first jaw comprising a first distal needle alignment portion and a first proximal needle alignment portion, and
a second jaw coupled to the clevis, the second jaw comprising a second distal needle alignment portion and a second proximal needle alignment portion;
wherein:
the second jaw and the first jaw are movable relative to each other between an open orientation and a closed orientation,
the second distal needle alignment portion is located opposite and aligned with the first distal needle alignment portion when the first jaw and the second jaw are in the closed orientation,
the second proximal needle alignment portion is located opposite and aligned with the first proximal needle alignment portion,
the first and the second distal needle alignment portions are configured to retain a needle in a distal needle orientation when in the closed orientation,
the first and the second proximal needle alignment portions are configured to retain the needle in a proximal needle orientation when in the closed orientation;
the first and the second distal needle alignment portions define a distal clamp path when in the closed orientation, the distal clamp path having a distal clamp path radius of curvature,
the first and the second proximal needle alignment portions define a proximal clamp path when in the closed orientation, the proximal clamp path having a proximal clamp path radius of curvature,
the distal needle orientation includes an upward orientation configured to retain a curved portion of the needle within a first axial plane intersecting a longitudinal axis of the first and the second jaws when in the closed orientation, the distal clamp path being located within the first axial plane, and a center of the distal clamp path radius of curvature being located on a side of the first jaw opposite from the second jaw within the first axial plane, and
the proximal needle orientation includes a downward orientation configured to retain the curved portion of the needle within a second axial plane intersecting the longitudinal axis of the first and the second jaws when in the closed orientation, the proximal clamp path being located within the second axial plane, and a center of the proximal clamp path radius of curvature being located on a side of the second jaw opposite from the first jaw within the second axial plane.
2. The apparatus of claim 1 , wherein:
the first axial plane is oriented normal to the longitudinal axis of the first and the second jaws when the first jaw and the second jaw are in the closed orientation; and
the second axial plane is oriented normal to the longitudinal axis of the first and the second jaws when the first jaw and the second jaw are in the closed orientation.
3. The apparatus of claim 1 , wherein the first axial plane defines an acute angle between a distal end portion of the first and the second jaws and the longitudinal axis of the first and the second jaws when the first jaw and the second jaw are in the closed orientation.
4. The apparatus of claim 1 , wherein:
the first and the second distal needle alignment portions are configured to orient the needle when the first and the second jaws move from the open orientation to the closed orientation while the curved portion of the needle is within the distal clamp path; and
the first and the second distal needle alignment portions clamp on the curved portion of the needle when moving from the open orientation to the closed orientation such that the curved portion of the needle aligns with the radius of curvature of the distal clamp path.