Valve arrangement for medical device

US9814872B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Ilona Eggert · Frankfurt am Main, DE
• James Alexander Davies · Kenilworth, GB
• Simon Lewis Bilton · Nesbitt, GB
• David Moore · Coalville, GB
• Steven Wimpenny · Nesbitt, GB
• Christopher Nigel Langley · Kenilworth, GB

Key dates

• Filing date: Apr 26, 2012
• Grant date: Nov 14, 2017
• Expiry date: Apr 26, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/3128
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention faces the technical problem of reducing the uncertainty over exact doses ejected from a medical device and at the same time providing a homogeneous, but controlled mixture of at least two fluids while a simple production should be maintained. A medical device comprising a first valve, a second valve, a first pre-valve ullage, a second pre-valve ullage, a post-valve ullage with a first end and a second end and a needle is presented. The first pre-valve ullage is connected to the post-valve ullage by the first valve and the second pre-valve ullage is connected to the post-valve ullage by the second valve. A first fluid is guidable from the first pre-valve ullage to the post-valve ullage and a second fluid is guidable from the second pre-valve ullage to the post-valve ullage.