Sekisui Medical Co., Ltd.

Masatoshi Niunoya

Ryusuke Okamoto

Hideo Anraku

A plug that allows the plug body to be easily and reliably pierced through by a hollow bodily fluid collection needle, makes the bodily fluid collection needle difficult to draw back out of the plug body owing to a resilience of a sheath after the start of bodily fluid collection, and enables easy and reliable collection of the bodily fluid. The plugis a plug for closing an opening end of a bodily fluid-collecting containerwhich is to be inserted into a tubular holder, and includes: a plug bodyto be fixed to the opening end of the bodily fluid-collecting container; and a cover membersheathed on the plug bodyto cover an outer surface of the plug body, wherein the cover memberincludes a side partcovering the outer surface of the plug body, and an outer surface of the side partis provided with a protrusionwhich protrudes radially outward of the side partof the cover memberto come into contact with and give frictional resistance to an inner wall of the holderupon insertion into the holder

Plug and bodily fluid-collecting instrument set

Provided is a plug that enables reliable and easy removal of a plug body together with a cover member from a tubular container without increasing an outwardly-bulging flange portion of a grip part of the plug body and is superior in productivity. A plugfor closing an open end of an open-ended tubular container. A cover memberis fitted on a plug bodyincluding a press-fit partand a grip part. An engagement portionis extended from a head plateof the cover memberinto a recessin the upper surface of the plug bodyto face an inside wallsurrounding the recess. When an external force is applied to incline the head platewith respect to the upper surface of the plug body, the engagement portionis engaged to the inside wall

Plug

Cap for a blood collection tube

The invention provides a serum or plasma separating composition which can compensate for the lack of initial thixotropy even at a reduced inorganic powder concentration and in which crevices or the like are less likely to be created in a partition wall formed of the separating composition after being centrifuged. The serum or plasma separating composition contains a liquid resin component having a partition wall-forming capability, a hydrophilic inorganic powder, a hydrophobic inorganic powder, and an organic compound serving as a thixotropy enhancer, wherein the organic compound is a polyalkylene glycol and/or a derivative thereof and is made of at least one type of polymer.

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Shunan, Japan

Masatoshi Niunoya