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:
Sep. 20, 2016
Filed:
Oct. 09, 2013
Roche Diagnostics International Ag, Rotkreuz, CH;
Andreas Geipel, Heddesheim, DE;
Joerg Dogwiler, Bergdietikon, CH;
Ulrich Haueter, Grosshoechstetten, CH;
Simon Scheurer, Bern, CH;
Rudolf Zihlmann, Langnau, CH;
David Teutsch, Schuepfen, CH;
Florian Kuehni, Bern, CH;
Reto Schaltegger, Muenchenbuchsee, CH;
Roche Diagnostics International AG, Rotkreutz, CH;
Abstract
A dosing unit for an ambulatory infusion pump device is presented. The dosing unit comprises a cylinder pump with a cylinder and a piston arranged in the cylinder. The piston has a shaft with a first threaded segment interacting with a threaded portion of the cylinder and can be displaced along a longitudinal axis of the cylinder by rotating the piston in regard to the cylinder around the axis. Furthermore, the piston allows for the relative or absolute determination of the longitudinal and/or rotational displacement of the piston in regard to the cylinder. In one embodiment, the piston shaft comprises a second segment provided with optically detectable markings that allow the monitoring of the longitudinal and/or rotational displacement of the piston in regard to the cylinder.