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:
Jan. 15, 1991
Filed:
Nov. 23, 1988
Applicant:
Inventors:
Peter Obermann, Erlangen, DE;
Manfred Franetzki, Uttenreuth, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604 67 ; 604152 ;
Abstract
A dosing device of the type which can be implanted in a patient to control injection of liquids from a reservoir into the patient has an electrically controllable piston pump and a circuit responsible for controlling and monitoring the operation of the pump. The circuit includes a unit for acquiring a chronological curve representative of the piston motion, and electrical signals proportional thereto are obtained. These signals are supplied to control elements which compare these signals to prescribed rated values, and generate control and alarm signals given deviations of the incoming signals from the rated values.