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公开(公告)号：US4705518A
公开(公告)日：1987-11-10
申请号：US799846
申请日：1985-11-18
CPC分类号： A61F2/0036 , A61F2210/009
摘要： An artificial sphincter apparatus and method, the artificial sphincter including a pair of parallel, coaxially mounted rings with at least one ring rotatable relative to the other. Optionally the rings are capable of being split open at their circumference and reclosed for mounting about a living tissue conduit for which surgical severing is not recommended. A plurality of circumferentially mounted tie members extend between the rings and are drawn laterally toward the center of the sphincter, narrowing a passageway therethrough, upon relative rotation between the rings. This action is capable of gently constricting a living tissue conduit within the passageway using a combination of rotational and circumferentially localized discrete radially compressive forces to control the flow of biological materials within the living tissue conduit. A cell impervious thin flexible tubular membrane envelopes the sphincter to isolate it from the immediate environment. The membrane has a central waist portion which fits within the openings in the rings and ends which fold outwardly around the sphincter for sealing together at the outer circumference thereof. In one embodiment of the invention such a membrane, when provided with compliant folds in the central waist portion thereof, replaces the plurality of tie members as a closure means for narrowing the passageway through the sphincter. Operation of the artificial sphincter after its implantation is effected by a number of disclosed remote and proximate actuation means.
摘要翻译： 一种人造括约肌装置和方法，所述人造括约肌包括一对平行的，同轴安装的环，其中至少一个环可相对于另一个旋转。 可选地，环能够在其圆周处被分开，并且重新闭合以安装在不推荐手术切断的活组织管道周围。 多个周向安装的连接构件在环之间延伸并且横向地朝向括约肌的中心被拉伸，在环之间相对旋转时使通道变窄。 该动作能够使用旋转和周向局部分离的径向压缩力的组合来轻轻收缩通道内的活组织导管，以控制生物体组织导管内的生物材料的流动。 细胞不可渗透的薄柔性管状膜包裹括约肌以将其与直接环境隔离。 膜具有中心腰部，其配合在环和端部中的开口内，其围绕括约肌向外折叠，用于在其外周处密封在一起。 在本发明的一个实施例中，当这种膜在其中央腰部部分设置有柔顺褶皱时，将多个连接部件替换为用于使通过狭窄的括约肌的闭合装置。 人造括约肌在其植入之后的操作由许多公开的远程和邻近致动装置实现。
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