METHOD FOR MANUFACTURING ARTIFICIAL HEART VALVE CUSP Russian patent published in 2006 - IPC A61F2/24 A61L27/08 

FIELD: medical engineering.

SUBSTANCE: method involves precipitating pyrocarbon layer on graphite substrate surface by carrying out carbonaceous gas from gas flow in flow reactor, separating pyrocarbon layer from the substrate and mechanically manufacturing cusp with paired supporting projections. Constant graphite substrate orientation is provided with relative to gas flow direction in the reactor during the whole pyrocarbon layer sedimentation process. The paired supporting projections are arranged in a way that their imaginary axis remains coinciding with carbonaceous gas flow direction when precipitating pyrocarbon layer. Graphite substrates are mainly shaped as plates placed into flow reactor along its lateral walls without spaces available between them. Six and more plates are placed into the reactor. The most convenient carbon compound for producing pyrocarbon by decomposition is methane. Propane and trichloroboron availability in gas flow is desirable. Additional inert carrier gas like nitrogen is available in the gas flow in addition to active ingredients. Pyrocarbon sedimentation and its final characteristics are controlled by varying nitrogen and active substances proportion in the gas flow.

EFFECT: high reliability of design.

3 cl, 2 dwg