Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Internal tissues
Patent
1979-06-06
1981-01-27
Schofer, Joseph L.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Internal tissues
3 15, 128274, A61L 1700, C14C 300, C14C 1500, A61C 122
Patent
active
042472920
ABSTRACT:
A process for fixing a natural tissue heart valve whereby the valve has improved hydraulic performance is disclosed. The valve is first placed in glutaraldehyde with the valve cusps kept in the closed position by applying hydraulic pressure to the ventricular side of the valve. The valve is then trimmed and fitted to and sutured into a fabric covered plastic stent. An expandable tube is then placed axially within the valve and expanded to force the valve cusps into an open position. The expanded tube-valve-stent assembly is then placed in glutaraldehyde to further fix the valve and predispose the valve cusps to an open position.
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Broom "Fatigue-Induced Damage in Glutaraldehyde Preserved Heart Valve Tissue" J. Thorack & Card, vol. 76 (2) 202-211.
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Indian Textile Journal Utilization of Tamarind Seed Pectin in Textile Industries, Part III Potentialities of Pectin in Printing by G. R. Savur, (1956) pp. 309-311 and 33-35 (1955).
Ciotti Thomas E.
Lilling Herbert J.
Schofer Joseph L.
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