Syringe

US10857306B2 · kind B2 · utility

Assignee

• Galderma Holding SA · CH

Inventors

• Anders Holmqvist · Varedo, IT
• Max Blomqvist · Uppsala, SE
• Jonas Törnsten · Uppsala, SE

Key dates

• Filing date: Dec 21, 2016
• Grant date: Dec 8, 2020
• Expiry date: Aug 9, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/582
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A syringe including a barrel, a plunger moveably arranged within said barrel and a plunger rod for driving said plunger is provided. The syringe includes a first engagement member arranged at the plunger rod such that a longitudinal movement of the plunger rod yields a rotational movement of said first engagement member, said first engagement member including a grooved surface, and a second engagement member arranged at the barrel to engage with said grooved surface of the first engagement member such that feedback is given to a user as the plunger rod is moved relative to the barrel for driving said plunger. Wherein, for a given distance D travelled by the plunger rod relative to the barrel, a point of the grooved surface of the first engagement member moves a distance d, wherein d≥D.