Table 2.

Mechanical property measurements for printed and biological mitral valve leaflet constructs.

Material property	Shore hardness	Elastic modulus (MPa)	Maximum observed strain (%)	Maximum observed force (N)	Maximum observed stress (MPa)	Failure achieved
Leaflets A	27	0.51 ± 0.01	58 ± 3	1.38 ± 0.12	0.30 ± 0.01	N
Leaflets B	27/40	0.63 ± 0.01	64 ± 3	4.25 ± 0.41	0.41 ± 0.01	N
Leaflets C	27/70	0.51 ± 0.05	58 ± 1	3.11 ± 0.33	0.31 ± 0.04	N
Leaflets D	27/70	0.95 ± 0.02	60 ± 8	7.07 ± 1.30	0.54 ± 0.11	Y
Mitral Anterior Leaflet	N/A	2.20 ± 0.55	49 ± 4	5.90 ± 1.60	0.96 ± 0.12	Y
Mitral Posterior Leaflet	N/A	1.74 ± 0.48	56 ± 6	3.74 ± 1.34	0.61 ± 0.16	Y

All printed leaflets were fabricated using Agilus. Leaflets A were printed with a homogeneous shore 27 formulation, Leaflets B were printed as bilayer constructs of shore 27 and shore 50 hardness, Leaflets C were printed with a shore 27 inner core and shore 70 outer shell, and Leaflets D were printed to patient-specific geometries with a shore 27 inner core and shore 70 outer shell. Results are presented as mean ± SD. N  = 3