Terumo Kabushiki Kaisha

Eiji Yagishita

Katsuyuki Takeuchi

Nobukazu Akaike

Koji Nakamura

Kimiya Mori

Tsutomu Ueda

Yukie Yamamoto

A syringe barrel includes: a hollow body portion that is configured such that a gasket is slidably insertable therein. The syringe barrel is made of a resin that has a total light transmittance of 80% or more. A scale is disposed at an inner circumferential surface or an outer circumferential surface of the body portion, the scale being visible from an outside of the syringe barrel and being configured to indicate a liquid amount. The scale is formed by (i) a stepped structure having a step height in a range of 0.001 to 0.15 mm in a radial direction, and/or (ii) an embossment.

Syringe barrel and pre-filled syringe

A syringe body for a prefilled syringe includes: a hollow body portion; a proximal-end opening portion provided at a proximal end portion of the body portion; and a distal-end nozzle provided at a distal end portion of the body portion. The body portion is made of a cyclic olefin polymer or a cyclic olefin copolymer. The body portion has a thick body portion accounting for 80% or more of the body portion along an axial direction. A wall thickness of the thick body portion is 2.23 to 2.40 mm.

Syringe barrel for pre-filled syringe, syringe system, and pre-filled syringe

Medical syringe

Growing community of inventors

Shizuoka, Japan

Eiji Yagishita