| 摘要 |
<p>The present invention relates to artificial contractile structures generally devised to be used in the medical field. Such structures may be advantageously used to assist the functioning of an organ, e.g. a sphincter. The structure (1) comprises a support (2) and several fibers (5) fixed to said support (2), said fibers (5) being made of a contractile material which can be activated by an activator in such a way as to provide said structure in a rest or in an activated position, the rest position being defined with non-rectilinear fibers and the activated position being defined with fibers of reduced length, said structure being adapted to be placed around a tubular part of an organ to be contracted, wherein the fibers (5) are distributed along said support (2) in order to be able to reduce the diameter of said tubular part, when said fibers (5) are contracted, in at least two distinct regions of the tubular part, and wherein the fibers (5) are designed to be activated pulsatory and alternately, so as to completely close at least one region of the tubular part, in a pulsating and alternating manner.</p> |
