Digital scan of a 35mm slide. Image of a disc-style artificial heart valve, with an opaque plastic disc enclosed in a metal cage. The ring of the cage is covered in white [...]

Digital scan of a 35mm slide. Image of an artificial heart valve on a dark blue background. A conical disc-type valve has been set inside a metal cage with a white mesh c [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve, set on a light blue fabric background. The white plastic ball has been removed from t [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve, set on a light blue fabric background. A white plastic ball is enclosed in a metal ca [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve set on a red background. The valve has a metal ball enclosed in a metal cage entirely [...]

Digital scan of a 35mm slide. Black-and-white comparison of four ball-and-cage style artificial heart valves, labeled A, B, C, and D. A and C have opaque plastic balls, w [...]

Digital scan of a 35mm slide. Image of a ball-and-cage style artificial heart valve, set on a light blue fabric background. The metal ball is enclosed in a cage entirely [...]

Digital scan of a 35mm slide. Black-and-white image of seven early models of artificial heart valves.

Digital scan of a 35mm slide. Image of a disc-style artificial heart valve, with a metal disc. The ring of the disc cage is covered in white mesh cloth. The valve is set [...]

Digital scan of a 35mm slide. Image of a disc-style artificial heart valve with extensive tissue growth onto the disc after implantation. The valve is shown in close-up, [...]