Infusionspumpe mit Zylinder-Kolben-Dosiereinheit und optischer Kolbenpositionsmessung

Details

Veröffentlichungs-Nr.

EP2510960

Aktenzeichen

EP11161979

Anmeldetag

12. April 2011

Veröffentlichung

28. Juni 2017

Erteilung

28. Juni 2017

Rechtsraum

EP

IPC

A61M5/142A61M5/168A61M5/36A61M5/172A61M5/315A61M5/14

Abstract

A dosing unit (12) for an ambulatory infusion pump device (10) comprises a cylinder pump with a cylinder (14) and a piston (16) arranged in said cylinder. The piston has a shaft (18) with a first threaded segment (50) interacting with a threaded portion (54) of the cylinder, and can be displaced along a longitudinal axis (48) of the cylinder by rotating the piston in regard to the cylinder around said axis. Furthermore the piston comprises means that allow the relative or absolute determination of the longitudinal and/or rotational displacement of the piston in regard to the cylinder. In a preferred embodiment the piston shaft (18) comprises a second segment (51) provided with optically detectable markings (64, 65) that allow the monitoring of the longitudinal and/or rotational displacement of the piston in regard to the cylinder.

Anmelder

Firmen

F. Hoffmann-La Roche AG
Roche Diabetes Care GmbH
Roche Diagnostics GmbH

Land

🇨🇭 Schweiz

Fachgebiete