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. 02, 1988
Filed:
Sep. 04, 1986
Anders Lekholm, Bromma, SE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A heart pacemaker electrode for stimulating and detecting heart voltages, has an electrode head at the distal, heart-proximate end, which functions to both stimulate the heart by supplying pulses thereto, and to sense heart activity. The surface of the electrode head is divided into portions which, although electrically connected, exhibit different impedances. Once portion has a lower impedance, which primarily functions for stimulating the heart, and the other portion has a higher impedance which functions in combination with the portion of lower impedance during sensing. The electrode head thus in totality exhibits a low impedance for stimulating the heart, permitting a high current density to be achieved, while exhibiting an overall high impedance for sensing.