Improvements relating to non-return valves particularly as prosthetics

Abstract

Abstract 1,268,484. Prosthetic check valves. B. J. BELLHOUSE, F. H. BELLHOUSE and K. G. REID. 18 June, 1969 [28 June, 1968], No. 30888/68. Heading A5R. [Also in Division F2]. A check valve, which in the rest position is open, comprises a cylindrical tubular valve closure element 1 of pliable material supported by three stiff axially directed fingers spaced at 120‹ to divide the closure element into three segments 1A, 1B, 1C, and a ring-like means to support the upstream end of the element, the upstream ends of the fingers being spatially fixed relative to one another. The valve may include a duct to which the closure element is attached by the ring-like means, the duct having cavities 5 corresponding to each segment which are so shaped and positioned that liquid flowing through the duct induces vortices in the cavities which exert a pressure on the segments, urging them radially inwards, so that when the flow of fluid through the duct stops, the vortices initiate valve closure. For prosthetic use the valve closure element is positioned adjacent the natural sinuses of Valsalva. Preferably the closure element 1 is supported by a wire skeleton (Fig. 3, not shown) having a scalloped ring part (2A) to which the scalloped upstream end ID of the element may be affixed and upstanding elongated U-shaped parts 2B, 1C, 2D within which folds 3 of the pliable tube may be gripped.

Inventors

• 👤 Brian John Bellhouse
• 👤 Francis Hewitt Bellhouse
• 👤 Kenneth Grant Reid

Bibliographic Details