Black and white photograph of the side and top of a Starr-Edwards heart valve prototypes A 6120, B6300, and C6310, ball-and-cage design.

Black and white photograph of the side and top of a Starr-Edwards heart valve prototype, ball-and-cage design.

Digital scan of a 35mm slide. Black-and-white image of two flap-style artificial heart valves set against a black background.

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve set on an red background. The white plastic ball is enclosed in a white mesh cloth-cov [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve set on an red background. The opaque plastic ball is enclosed in a white mesh cloth-co [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve set on an orange-red background. The metal ball is enclosed in a white mesh cloth-cove [...]

Digital scan of a 35mm slide. Image of two ball-and-cage style artificial heart valves set on an orange-red background. The valve on the left has a metal ball, while the [...]

Digital scan of a 35mm slide. Image of a disc-style artificial heart valve set on a dark blue fabric background. The metal disc is enclosed in a metal cage with a white m [...]

Digital scan of a 35mm slide. Image of an artificial heart valve set on a green fabric background. Tissue has been sewn into a mesh cloth-covered ring.

Digital scan of a 35mm slide. Image of a Russian model of a disc-style artificial heart valve. The white product case has been set on its edge so that the label writing c [...]