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:
Nov. 04, 2014
Filed:
Jun. 15, 2009
Jean-noël Fehr, Neuchatel, CH;
Thomas Von Büren, Bern, CH;
Stefan Troller, Sissach, CH;
Marc Mattmüller, Wünuewil, CH;
Jean-Noël Fehr, Neuchatel, CH;
Thomas Von Büren, Bern, CH;
Stefan Troller, Sissach, CH;
Marc Mattmüller, Wünuewil, CH;
Roche Diagnostics International AG, Rotkreuz, CH;
Abstract
A medical infusion system with pulse width modulation and a safety circuit and a method thereof are disclosed. Embodiments of the system include a switching device and a pump motor, wherein the pump motor and the switching device are connected in series and constitute a power supply circuit to be connected to a power supply. Embodiments of the system further includes a control signal generator configured to generate a control signal e.g. PWM, and which is connected to input of the safety circuit. Output of the safety circuit is connected to a control input of the switching device such that the pump motor will not operate if there is no control signal applied to the input of the safety circuit.