Importance

Loading Importance Indicators...

Abstract

An improved syringe is provided which can be used in any step of preparation of a medicament by vacuum freeze-drying, etc., storage of a medicament, mixing of medicaments and dosing of a medicament in a sanitary and stable manner. The syringe comprises a cylinder having a front end part at one end and an opening part at another end and a bypass running in the longitudinal direction near the central position of the cylinder on the inner wall within the cylinder. A first sealing stopper is adapted, at a position toward the opening part of the cylinder from the bypass within the cylinder, to form a first compartment between the front end of the cylinder and the first sealing stopper. A second sealing is stopper adapted, at a position toward the opening part of the cylinder from the first sealing stopper within the cylinder, to form a second compartment between the first sealing stopper and second sealing stopper. One or more bypasses are provided in a concave form on the inner wall surface of the cylinder, and the outer circumference of the cylinder has a smooth cylindrical shape. Further one or more bypasses can be provided in a concave form in two stages on the inner wall surface of the cylinder.

Loading the Abstract Image...

First Claim