Nipro Corporation

Ryohei Namba

Shigeki Tanaka

Masanobu Iwasa

Makoto Sato

Teruhisa Hirobe

Shunzo Yamashita

Takeo Kikuchi

Hidero Kato

A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.

Syringe plunger with one piece hollow gasket and plunger rod

A nutrient infusion preparation comprises a fat emulsion essentially consisting of fat particles having a mean particle size of 0.003 to 0.100 &mgr;m and a dispersion medium, and a solution containing electrolytes and amino acids. Also the nutrient infusion preparation comprises a fat emulsion (A) consisting essentially of fat particles having a mean particle size of 0.003 to 0.100 &mgr;m and a dispersion medium, and a solution (B) containing electrolytes and/or amino acids. A container having a plurality of chambers which are isolated from each other by partitions capable of being easily opened, whose respective chambers contain the fat emulsion (A) and said solution (B) and optionally a solution (C) containing saccharides. The infusion preparation of the present invention supplies various nutrient components including fatty acids required biologically to patients and enables amelioration or prevention of essential fatty acid deficiencies during TPN therapy. Further, the infusion preparation enables visual identification of insoluble foreign bodies present in an infusion container and can be administered to patients through a sterilization filter.

Nutrient infusion preparation

Growing community of inventors

Hachioji, Japan

Ryohei Namba