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:
Aug. 16, 1988
Filed:
Jun. 16, 1987
Alexander Wirtzfeld, Ingolstadt/Friedrichshofen, DE;
Karl Stangl, Munich, DE;
Roland Heinze, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
The stimulation frequency of a heart pacemaker is controlled dependent on a signal representative of the blood oxygen content of the patient. The blood oxygen dependent signal is generated by a blood oxygen sensor. A temperature sensor generates a separate signal dependent on blood temperature. The blood oxygen and blood temperature signals are combined such that the blood oxygen signal is lowered, i.e., the value thereof is reduced, in ranges of higher physical load indicated by an increase in the temperature dependent signal. The combined signal is used to control the stimulation frequency of a heart pacemaker so that the stimulation frequency is increased, if blood oxygen saturation is decreasing and/or blood temperature is increasing.