Glasspritzenzylinder mit Erhöhter Konusdurchbruchkraft

Details

Veröffentlichungs-Nr.

EP3777929

Aktenzeichen

EP19191323

Anmeldetag

12. August 2019

Veröffentlichung

6. Oktober 2021

Erteilung

6. Oktober 2021

Rechtsraum

EP

IPC

A61M5/28A61M5/31A61M5/34A61J1/06

Abstract

The present invention relates to a glass syringe barrel with an at least partially conically shaped upper portion and having a longitudinal axis Lbarrel, the glass syringe barrel comprising a top end through which a liquid can be ejected and a bottom end into which a plunger stopper can be pushed, the glass syringe barrel (100) comprising in a direction from the top end to the bottom end: i) a cone region having a first end that corresponds to the top end of the glass syringe barrel and a second end, wherein the cone region has a length l1 and an outer diameter d1 at the second end; ii) a shoulder region having a first end that is adjacent to the second end of the cone region and a second end, wherein the outer contour of the shoulder region comprises a concave and substantially circular arc-shaped area c1 with an outer radius r1 beginning below the second end of the cone region and a convex and substantially circular arc-shaped area c2 with an outer radius r2 beginning above the second end of the shoulder region; iii) a body region having a first end that is adjacent to the second end of the shoulder region and a second end that corresponds to the bottom end of the glass syringe barrel, wherein the body region has an outer diameter d2 and a glass thickness n2; wherein the outer contour of the glass syringe barrel in the shoulder region is defined by a certain value for r1. The present invention also relates to a plurality of glass syringe barrels and to a syringe that comprises a glass syringe barrel.

Anmelder

Firmen

SCHOTT AG
Schott AG

Land

🇩🇪 Deutschland

Fachgebiete