Filling nozzle
AssigneeChugai Seiyaku Kabushiki Kaisha
InventorShaw Nishizawa
Life of this patent
Estimating the term…
Abstract
The present invention provides a filling nozzle obtained by using a resin selected from a cycloolefin polymer and a cycloolefin copolymer, or a filling nozzle including a tubular passage for supplying a pharmaceutical solution, and a filling port disposed at a lower end of the tubular passage, in which the tubular passage and the filling port have a circular peripheral cross-section, and an inner diameter of the passage of the filling port is larger than an inner diameter of the tubular passage disposed on an upstream side.
Claims10
A filling nozzle, comprising a nozzle body having a tubular passage for supplying a pharmaceutical solution, and a filling port having a passage formed continuously to a lower end of the tubular passage, for discharging the pharmaceutical solution from a tip of the filling port, wherein the tubular passage of the nozzle body and the passage of the filling port have a circular peripheral cross-section, an inner diameter of the passage of the filling port is larger than an inner diameter of the tubular passage disposed on an upstream side, the tubular passage is connected to the passage of the filling port via an inclined portion having an inner diameter increasing in a downstream direction, the inner diameter of the tubular passage of the nozzle body is 1 to 5 mm, a length of the passage of the filling port is 1 to 10 mm, and a ratio of a length of the filling port in the length direction of the filling nozzle to an inner diameter at the end of the filling port is 0.7 to 1.8, and the filling nozzle is formed by using a material having a water contact angle of 50 to 120 degrees.
Dependencies are inferred from the claim text.