A prolapse prevention device (300, 500, 600, 700, 800, 1700) for treating valvular regurgitation in a heart valve, the prolapse prevention device (300, 500, 600, 700, 800, 1700) comprising: a continuous wire-like structure (302, 502, 602, 702, 802, 1702) having a first end (304, 504, 604, 704, 804, 1704) and a second end (306, 506, 606, 706, 806, 1706) that opposes the first end (304, 504, 604, 704, 804, 1704), the first end (304, 504, 604, 704, 804, 1704) and the second end (306, 506, 606, 706, 806, 1706) being disconnected from each other, wherein the prolapse prevention device (300, 500, 600, 700, 800, 1700) in a deployed configuration includes a centering ring (310, 510, 610, 710, 810, 1710) configured to seat adjacent to and upstream of an annulus of the heart valve to circumferentially center the prolapse prevention device (300, 500, 600, 700, 800, 1700) in situ, wherein the centering ring (310, 510, 610, 710, 810, 1710) is an open ring, an inner tail (308, 508, 608, 708, 808, 1708) that conforms to an inner surface of the centering ring (310, 510, 610, 710, 810, 1710) and is configured to permit the open ring to self-adjust to a size of the annulus of the heart valve, a leaflet backstop (312, 512, 612, 712, 812, 1712) extending radially inward from the centering ring (310, 510, 610, 710, 810, 1710) and configured to contact at least a first leaflet of the heart valve in situ to exert a pressure in a downstream direction on the first leaflet to prevent the first leaflet from prolapsing into the atrium, a vertical support (314, 514, 614, 714, 814, 1714) extending from the centering ring (310, 510, 610, 710, 810, 1710) in an upstream direction such that an apex (316, 516, 616, 716, 816, 1716) thereof is configured to seat against a roof of an atrium in situ, and a retrieval arm (318, 518, 618, 718, 818, 1718) extending from the apex (316, 516, 616, 716, 816, 1716) of the vertical support (314, 514, 614, 714, 814, 1714) in a downstream direction, away from the roof of the atrium. a continuous wire-like structure (302, 502, 602, 702, 802, 1702) having a first end (304, 504, 604, 704, 804, 1704) and a second end (306, 506, 606, 706, 806, 1706) that opposes the first end (304, 504, 604, 704, 804, 1704), the first end (304, 504, 604, 704, 804, 1704) and the second end (306, 506, 606, 706, 806, 1706) being disconnected from each other, wherein the prolapse prevention device (300, 500, 600, 700, 800, 1700) in a deployed configuration includes a centering ring (310, 510, 610, 710, 810, 1710) configured to seat adjacent to and upstream of an annulus of the heart valve to circumferentially center the prolapse prevention device (300, 500, 600, 700, 800, 1700) in situ, wherein the centering ring (310, 510, 610, 710, 810, 1710) is an open ring, an inner tail (308, 508, 608, 708, 808, 1708) that conforms to an inner surface of the centering ring (310, 510, 610, 710, 810, 1710) and is configured to permit the open ring to self-adjust to a size of the annulus of the heart valve, a leaflet backstop (312, 512, 612, 712, 812, 1712) extending radially inward from the centering ring (310, 510, 610, 710, 810, 1710) and configured to contact at least a first leaflet of the heart valve in situ to exert a pressure in a downstream direction on the first leaflet to prevent the first leaflet from prolapsing into the atrium, a vertical support (314, 514, 614, 714, 814, 1714) extending from the centering ring (310, 510, 610, 710, 810, 1710) in an upstream direction such that an apex (316, 516, 616, 716, 816, 1716) thereof is configured to seat against a roof of an atrium in situ, and a retrieval arm (318, 518, 618, 718, 818, 1718) extending from the apex (316, 516, 616, 716, 816, 1716) of the vertical support (314, 514, 614, 714, 814, 1714) in a downstream direction, away from the roof of the atrium. a centering ring (310, 510, 610, 710, 810, 1710) configured to seat adjacent to and upstream of an annulus of the heart valve to circumferentially center the prolapse prevention device (300, 500, 600, 700, 800, 1700) in situ, wherein the centering ring (310, 510, 610, 710, 810, 1710) is an open ring, an inner tail (308, 508, 608, 708, 808, 1708) that conforms to an inner surface of the centering ring (310, 510, 610, 710, 810, 1710) and is configured to permit the open ring to self-adjust to a size of the annulus of the heart valve, a leaflet backstop (312, 512, 612, 712, 812, 1712) extending radially inward from the centering ring (310, 510, 610, 710, 810, 1710) and configured to contact at least a first leaflet of the heart valve in situ to exert a pressure in a downstream direction on the first leaflet to prevent the first leaflet from prolapsing into the atrium, a vertical support (314, 514, 614, 714, 814, 1714) extending from the centering ring (310, 510, 610, 710, 810, 1710) in an upstream direction such that an apex (316, 516, 616, 716, 816, 1716) thereof is configured to seat against a roof of an atrium in situ, and a retrieval arm (318, 518, 618, 718, 818, 1718) extending from the apex (316, 516, 616, 716, 816, 1716) of the vertical support (314, 514, 614, 714, 814, 1714) in a downstream direction, away from the roof of the atrium.