[Autovibration of a circular locking element of the aortic valve prosthesis].
Some experimental results when studying self-sustained vibrations of the ball locking element for an artificial heart valve are presented. The sign-changing dependence of a ball drag coefficient upon the ball stroke has been shown to cause these vibrations. Undamped oscillations result in a considerable growth of the valve hydrodynamic resistance.
D001021:Aortic Valve; D001705:Bioprosthesis / Q000009:adverse effects*; D001794:Blood Pressure; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D006874:Hydrostatic Pressure / Q000009:adverse effects; D008955:Models, Cardiovascular; D011474:Prosthesis Design; D013927:Thrombosis / Q000209:etiology; D014732:Vibration / Q000009:adverse effects
Issledovanie avtokolebaniĭ sharovogo zapiraiushchego elementa aortal'nogo klapana serdtsa.