The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2015
Filed:
Jul. 14, 2010
Nils Basso, Frankfurt am Main, DE;
Thomas Nagel, Tharandt, DE;
Rene Richter, Tharandt, DE;
Robert Witt, Dresden, DE;
Nils Basso, Frankfurt am Main, DE;
Thomas Nagel, Tharandt, DE;
Rene Richter, Tharandt, DE;
Robert Witt, Dresden, DE;
Sanofi-Aventis Deutschland GmbH, Frankurt am Main, unknown;
Abstract
The invention relates to a pump unit (), replaceably attachable to a reusable backend () of an injection arrangement () for delivering a liquid medicament, the pump unit () comprising a medicament inlet (), a medicament outlet () and a peristaltic pump for delivering the liquid medicament from the inlet () to the outlet (), the peristaltic pump comprising a pump rotor () and a pump hose (), the pump hose () partially arranged around the pump rotor (), the pump rotor () having protrusions () for engaging the pump hose (), wherein a fixing side () of the pump unit () facing a reusable backend () when attached has a recess () in the shape of a circular arc for allowing a correspondingly shaped stop () protruding from the reusable backend () to enter into the pump unit () so as to support the pump hose () from an outer side opposite the pump rotor () thus allowing the protrusions () to locally squeeze the pump hose () against the stop () when attached to the reusable backend ().