Valves and valve actuation – Rotary valves – Ball valve
Patent
1981-07-31
1983-11-29
Apley, Richard J.
Valves and valve actuation
Rotary valves
Ball valve
251 65, A61F 122
Patent
active
044173601
ABSTRACT:
An improved valve prosthesis for causing non-traumatic unidirectional flow of a pulsatory fluid, such as blood, through a conduit, such as a blood vessel by means of magnetic force. The valve may include two flaps, made of a suitable flexible material, attached by the proximal ends to opposite sides of a covered annular mounting structure. A pair of magnetic members are connected to the distal ends of the flaps thereby to exert either repulsive or attractive force to permit the smooth, non-traumatic closure of the valve flaps. If repulsive force is used, the opposite sides are prevented from impacting traumatically. In another embodiment a pair of rigid flaps are mounted for pivotal movement along a common diametrical line and prevented, by magnetic repulsive force, from impacting traumatically in either the closed or open positions.
REFERENCES:
patent: 3197788 (1965-08-01), Segger
patent: 3233610 (1966-02-01), Wade
patent: 3370305 (1968-02-01), Gott
patent: 3409038 (1968-11-01), Blackford
patent: 3416159 (1968-12-01), Smeloff et al.
patent: 3495620 (1970-02-01), Raimondi et al.
patent: 3736598 (1973-06-01), Bellhouse et al.
patent: 3898701 (1975-08-01), La Russa
patent: 3926175 (1975-12-01), Allen et al.
patent: 3959827 (1976-06-01), Kaster
patent: 4084268 (1978-04-01), Ionescu et al.
patent: 4245358 (1981-01-01), Moasser
"The Direct Approach for the Correction of Aortic Insufficiency", by C. A. Hufnagel et al., J.A.M.A., vol. 178, No. 3, Oct. 21, 1961, pp. 275-279.
"Comparative Study of Some Prosthetic Valves for Aortic and Mitral Replacement", by C. A. Hufnagle et al., Surgery, vol. 57, No. 1, Jan. 1965, pp. 205-210.
"Hemodynamic Assessment of Lillehei-Kaster Tilting Disc Aortic and Mitral Prosthesis", Robert Forman et al., The Journal of Thoraic and Cardiovascular Surgery, 75:595-598, 1978.
"Evaluation of the In Vivo Function of the Hancock Porcine Xenograft in the Aortic Position", Johnson et al., The Journal of Thoraic & Cardiovascular Surgery, 75:599-605, 1978.
"Modified University of Capetown Prosthesis", Ellis et al., The Annals of Thoracic Surgery 23: 36-31, 1977.
Apley Richard J.
Isabella David J.
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