Flexible annuloplasty ring
First Claim
1. An annuloplasty ring adapted for implantation at a native heart valve annulus, consisting essentially of:
- a flexible core member comprising a multi-stranded braided cable formed of multiple metallic wire strands wound into multi-strand braids with the multi-strand braids being braided into the multi-stranded braided cable and having elastic properties with a first elastic modulus and a relaxed shape that forms an open ring with two free ends separated across a gap, the relaxed shape defining a peripheral shape of the ring sized to extend around and be in contact with an endocardial surface of the native heart valve annulus and the elastic properties of the braided cable being sufficient to provide remodeling to the annulus when implanted; and
an outer covering of suture-permeable material closely encasing the flexible core member.
1 Assignment
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Accused Products
Abstract
An annuloplasty repair segment for heart valve annulus repair. In one embodiment a multi-stranded cable replaces solid core wire for both the tricuspid and mitral valves. Cable allows for greater deployment flexibility for minimally-invasive surgical (MIS) implant, while still maintaining the required strength and similar tensile properties of solid-core wire. In addition, selective placement of point-welds or other such control points locally control other parameters such as the amount and direction of displacement as the ring undergoes external loading. Cable with well-placed control points result in a MIS annuloplasty ring with sufficient flexibility in the x-y plane to allow a surgeon to squeeze the ring into a small incision, such as for example 1 cm×1 cm, while maintaining structural rigidity under forces exerted on the implanted ring by the cardiac cycle and allowing for asymmetrical deflection to be designed into the product.
227 Citations
22 Claims
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1. An annuloplasty ring adapted for implantation at a native heart valve annulus, consisting essentially of:
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a flexible core member comprising a multi-stranded braided cable formed of multiple metallic wire strands wound into multi-strand braids with the multi-strand braids being braided into the multi-stranded braided cable and having elastic properties with a first elastic modulus and a relaxed shape that forms an open ring with two free ends separated across a gap, the relaxed shape defining a peripheral shape of the ring sized to extend around and be in contact with an endocardial surface of the native heart valve annulus and the elastic properties of the braided cable being sufficient to provide remodeling to the annulus when implanted; and an outer covering of suture-permeable material closely encasing the flexible core member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification