Dual side spring V-clip for surgical treatment of left atrial appendage
A clip and method provide for surgically minimizing or eliminating an atrial appendage of the patient using a clip. The clip includes first and second elongate beam. The clip includes a dual side spring assembly configured to urge the first and the second elongate beams from an open V-shaped position to a parallel closed position. The dual side spring assembly includes a right-side spring and a left-side spring having first and second terminal ends attached to distal sections respectively of the first and the second elongate beams. The right and the left-side springs extend proximally to a respective proximal bend connected by a lateral element that maintains alignment to resist lateral splaying movement of the first and the second elongate beams.
1. An apparatus comprising:
a first elongate beam;
a second elongate beam positionable between a closed state in parallel alignment with the first elongate beam and an open state being a distally angled away from the first elongate beam in a V-shape;
a dual side spring assembly configured to urge the first and the second elongate beams from an open position to a closed position, wherein the dual side spring assembly comprises a right-side spring and a left-side spring each having first and second terminal ends attached to distal sections respectively of the first and the second elongate beams and extending proximally to a respective proximal bend; and
a lateral spacing element attached between respective proximal bends of the right-side spring and the left-side spring, wherein the lateral spacing element maintains parallel alignment to resist lateral splaying movement of the first and second elongate beams,
wherein each of the right-side spring and the left-side spring in a free state present crossed distal ends having a reverse bend as compared to the bend at a midpoint, and wherein the right-side spring and the left-side spring each have separated distal ends in the free state.
2. The apparatus of claim 1 , wherein each of the first and second terminal ends of the right-side spring and the left-side spring comprise an anti-rotation feature attached by overmolding to corresponding distal sections of the first and the second elongate beams.
3. The apparatus of claim 2 , wherein the anti-rotation feature comprises one or of a polygonal head, an undercut portion, a flat portion, a spline portion, a hole, and a swage.
4. The apparatus of claim 1 , wherein:
the first and the second terminal ends of the right-side spring are aligned at a first longitudinal position on the right side of each of the first and the second elongate beams; and
the first and the second terminal ends of the left-side spring are aligned at the first longitudinal position on the left side of each of the first and the second elongate beams, the right-side spring and the left-side spring being identically sized.
5. The apparatus of claim 1 , wherein:
the first and the second terminal ends of the right-side spring are aligned at a first longitudinal position on the right side of each of the first and the second elongate beams; and
the first and the second terminal ends of the left-side spring are aligned at a second longitudinal position on the left side of each of the first and the second elongate beams, the second longitudinal position longitudinally spaced from the first longitudinal position, the right-side spring and the left-side spring being differently longitudinally sized.
6. The apparatus of claim 1 , wherein the first and the second elongate beams comprise atraumatic inward surfaces.
7. The apparatus of claim 1 , further comprising one or more materials compatible with surgical implantation on a left atrial appendage of a heart of a patient.