An anchor for a medical implant, the anchor having a deployed configuration wherein the anchor comprises: a base portion having a longitudinal axis and comprising first and second longitudinal ends (22,24) in oppositely-disposed first and second longitudinal directions, respectively, of the anchor, and a cage between the first and second longitudinal ends (22,24); a coupler portion connected to and spaced apart from the second longitudinal end of the base portion in the second longitudinal direction of the anchor; a plurality of flexible arms radially projecting away from the first longitudinal end of the base portion and axially projecting toward the second longitudinal end of the base portion, each arm having a span portion terminating in a distal portion of the arm, the distal portion having a semispherical shape that defines a convex surface facing the second longitudinal direction; and a plurality of flexible legs connected to the coupler portion and to the second longitudinal end of the base portion, each leg projecting radially away from the longitudinal axis of the anchor and axially projecting toward the first longitudinal end of the base portion, each leg having a first span portion adjoining the second longitudinal end of the base portion, a second span portion adjoining the coupler portion, and an intermediate portion therebetween; means (52,54) for securing the medical implant within the cage of the base portion so that at least a portion of the implant is between the first and second longitudinal ends (22,24) of the base portion, the cage having an opening large enough to accommodate the implant, wherein the base portion, the coupler portion, the arms, the legs, and the securing means (52, 54) are a unitary structure without metallurgical or mechanical joints therebetween, and characterized in that the intermediate portion has a semispherical shape that defines a convex surface facing the first longitudinal direction. a base portion having a longitudinal axis and comprising first and second longitudinal ends (22,24) in oppositely-disposed first and second longitudinal directions, respectively, of the anchor, and a cage between the first and second longitudinal ends (22,24); a coupler portion connected to and spaced apart from the second longitudinal end of the base portion in the second longitudinal direction of the anchor; a plurality of flexible arms radially projecting away from the first longitudinal end of the base portion and axially projecting toward the second longitudinal end of the base portion, each arm having a span portion terminating in a distal portion of the arm, the distal portion having a semispherical shape that defines a convex surface facing the second longitudinal direction; and a plurality of flexible legs connected to the coupler portion and to the second longitudinal end of the base portion, each leg projecting radially away from the longitudinal axis of the anchor and axially projecting toward the first longitudinal end of the base portion, each leg having a first span portion adjoining the second longitudinal end of the base portion, a second span portion adjoining the coupler portion, and an intermediate portion therebetween; means (52,54) for securing the medical implant within the cage of the base portion so that at least a portion of the implant is between the first and second longitudinal ends (22,24) of the base portion, the cage having an opening large enough to accommodate the implant, wherein the base portion, the coupler portion, the arms, the legs, and the securing means (52, 54) are a unitary structure without metallurgical or mechanical joints therebetween, and characterized in that the intermediate portion has a semispherical shape that defines a convex surface facing the first longitudinal direction.