Heart valve sizing ring for valve-sparing aortic root remodeling procedures
View Patent ↗A heart valve sizing ring is disclosed. The sizing ring includes an outer ring and an inner ring configured and arranged to couple to the outer ring. A tubular portion extends from the inner ring and has a plurality of suture holders arranged about an upper end thereof. The outer ring and inner ring having a pair of complementary mating surfaces configured and arranged to grip sutures therebetween when coupled together. When coupled around sutures, the assembled ring may be tightened down against the heart valve to test the fit as if the sizing ring were a similarly sized prosthetic heart valve ring. Commissures of the heart valve may be suspended from the suture holders of the tubular portion. The surgeon can then remove the sizing ring and replace it with a prosthetic ring.
1. A heart valve sizing ring, comprising:
an outer ring;
an inner ring configured and arranged to removably couple to the outer ring;
the outer ring and inner ring having a pair of complementary mating surfaces configured and arranged to grip annular sutures around the base of a heart valve therebetween when coupled together, the sutures being slidably adjustable between the inner ring and outer ring when gripped therebetween;
a tubular portion extending from the inner ring and away from the outer ring when coupled together, the tubular portion having an upper end with an opening distal to the inner ring and coupled outer ring; and
a plurality of suture holders spaced about the upper end of the tubular portion, said suture holders configured and arranged to grip commissure sutures to suspend a heart valve leaflets within the tubular portion.
2. The heart valve sizing ring of claim 1 , wherein the outer ring further comprises a defect forming a break in the outer ring.
3. The heart valve sizing ring of claim 1 , wherein the outer ring has a concave surface on an inner portion thereof and the inner ring has a convex surface on an outer portion thereof that snap-fit together.
4. The heart valve sizing ring of claim 1 , wherein the suture holders are slots.
5. The heart valve sizing ring of claim 4 , wherein the slots have a coating to aid in gently gripping sutures.
6. The heart valve sizing ring of claim 1 , wherein the suture holders are clips.
7. The heart valve sizing ring of claim 1 , wherein the tubular portion is straight.
8. The heart valve sizing ring of claim 1 , wherein the tubular portion is a Valsalva-type tubular graft.