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CN105188534B 用于选择性地阻塞针体的管腔的设备和方法 有权

用于选择性地阻塞针体的管腔的设备和方法
摘要：
用于将流体不经肠胃地传递到患者和/或从患者不经肠胃地传递流体的流体传递装置包括壳体、针体和阻塞机构。壳体限定流体流动路径并且可联接到流体储器。针体具有：远侧端部部分，其被构造成插入患者体内；和近侧端部部分，其被构造成流体地联接到壳体的流体流动路径，并且针体在所述近侧端部部分与所述远侧端部部分之间限定管腔。阻塞机构选择性地控制针体与流体流动路径之间的流体流动。阻塞机构包括阻塞构件，所述阻塞构件可在第一构型与第二构型之间运动，在所述第一构型中针体的管腔在插入患者体内期间被堵塞，在所述第二构型中针体的管腔在针体已经插入患者体内之后是畅通的，允许流体传递到患者或从患者传递。
摘要（英）：

A fluid transfer device for parenterally transferring fluid to and/or from a patient includes a housing, a needle, and an occlusion mechanism. The housing defines a fluid flow path and is couplable to a fluid reservoir. The needle has a distal end portion that is configured to be inserted into the patient and a proximal end portion that is configured to be fluidically coupled to the fluid flow path of the housing, and defines a lumen therebetween. The occlusion mechanism selectively controls a fluid flow between the needle and the fluid flow path. The occlusion mechanism includes an occlusion member that is movable between a first configuration where the lumen of the needle is obstructed during insertion into the patient and a second configuration where the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient.

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