Mitral heart valve replacements
First Claim
1. A mitral heart valve replacement of essentially flexible bioincorporable material comprising a generally D-shaped sewing ring having an opening defined by a perimeter including at least one long straight side portion thereof, an anterior cusp hinged contiguously from said straight side portion;
- a posterior cusp hinged contiguously from a shorter side portion of said opening perimeter opposite said anterior cusp, and two lateral cusps respectively hinged contiguously one from each of two lateral side portions of said opening perimeter extending between adjacent ends of the lateral side portions from which said anterior and posterior cusps are hinged, chordae of bioincorporable material extending from edge portions of said cusps for connection to papillary muscles in a ventricle cavity when the sewing ring is sutured to an atrio-ventricular junction of a host or patient heart, wherein aggregate surface area of said cusps exceeds an area circumscribed by the sewing ring so that when the valve is caused to open, by said papillary muscles pulling the chordae, said cusps simply deflect away from each other, and when said papillary muscles allow the valve to close, the edge portions of the cusps meet within said ventricle cavity of the patient heart.
2 Assignments
0 Petitions
Accused Products
Abstract
A mitral heart valve replacement of essentially flexible bioincorporable material comprising a generally D-shaped (30) sewing ring having an opening (31) with at least one long straight side portion (32), an anterior cusp (33) hinged contiguously from that straight side portion (32) a posterior cusp (34) hinged contiguously from a shorter side portion (35) of the opening (31) opposite the anterior cusp (33), and two lateral cusps (36A & 36B) hinged contiguously one from each of the remaining side portions of the opening (31) extending between adjacent ends of the side portions (35) from which the anterior (33) and posterior cusps (34) are hinged, together with chordae of bioincorporable material extending from edge portions of the cusps for connection to the papillary muscles in the cavity of the ventricle when the sewing ring is sutured to the atrio-ventricular junction of the host or patient heart.
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Citations
22 Claims
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1. A mitral heart valve replacement of essentially flexible bioincorporable material comprising a generally D-shaped sewing ring having an opening defined by a perimeter including at least one long straight side portion thereof, an anterior cusp hinged contiguously from said straight side portion;
- a posterior cusp hinged contiguously from a shorter side portion of said opening perimeter opposite said anterior cusp, and two lateral cusps respectively hinged contiguously one from each of two lateral side portions of said opening perimeter extending between adjacent ends of the lateral side portions from which said anterior and posterior cusps are hinged, chordae of bioincorporable material extending from edge portions of said cusps for connection to papillary muscles in a ventricle cavity when the sewing ring is sutured to an atrio-ventricular junction of a host or patient heart, wherein aggregate surface area of said cusps exceeds an area circumscribed by the sewing ring so that when the valve is caused to open, by said papillary muscles pulling the chordae, said cusps simply deflect away from each other, and when said papillary muscles allow the valve to close, the edge portions of the cusps meet within said ventricle cavity of the patient heart.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- 20. A combined sizing and suture placement guiding device comprising an elongate handle carrying an arcuate sizing member having a circumferential shallow groove for fitting within a corresponding part of a remnant of an excised natural valve of a patient heart at an atrioventricular junction, with notches or slots, one adjacent each end of said sizing member and one intermediate thereof, for indicating positions for placement of sutures to be passed also through corresponding positions on a sewing ring of a replacement valve and with a depth gauge depending from the sizing member for contact with papillary muscles to indicate the positions of placement sutures in papillary muscles for securing attachment portions of connective chordae.
Specification