Multi-chamber bag for medical purposes and method for recognition of the state of a separable seam of a multi-chamber bag for medical purposes

US12171718B2 · kind B2 · utility

Assignee

• Fresenius Medical Care Deutschland GmbH · DE

Inventors

• Robert Berlich · Namborn, DE
• Jochen Huppert · Neuhaus, DE
• Andreas Laubrock · Usingen, DE
• Gerhard Mager · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Jul 9, 2019
• Grant date: Dec 24, 2024
• Expiry date: Apr 16, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61J2205/50
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a multi-chamber bag 1 for medical purposes which is formed by films 2, 3, in particular flexible films, that are arranged against one another, are made of an at least partially transparent material and are interconnected in a liquid-tight manner using at least one non-separable seam 5, the bag being divided into at least two chambers 1A, 1B by at least one separable seam 8, by means of which the films arranged against one another are interconnected in a liquid-tight manner. The multi-chamber bag according to the invention is characterised by at least one visually perceptible structure 10 that signals the state of the at least one separable seam 8 and can be easily optically detected. Using this visible structure 10, the user can immediately identify whether the seam 8 is open or closed. The structure is composed of structural elements 11 which the films 2, 3 arranged against one another comprise in the region of the separable seam 8 and are in a predetermined spatial arrangement relative to one another such that the structural elements in the region of the separable seam complement one another to form the structure signalling the state of the separable seam…