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:
Oct. 12, 1993
Filed:
Nov. 04, 1992
Jack R Robson, Beech Grove, IN (US);
Random Technologies, Inc., Indianapolis, IN (US);
Abstract
Responsive heart stimulating device and method for operating the device which includes a heart stimulating waveform generator for transmitting a waveform to an electrode. A time domain reflectometer (TDR) is also connectable to the electrode for generating TDR signals. A logic and control unit processes TDR readings from the electrode, and is adapted to alter the heart stimulating waveform in response to the TDR readings. The TDR may be connected to a pacemaker pacing electrode to detect changes in heart stroke volume or cardiac output, or to one or more probes capable of detecting motion of the patient, and the logic and control unit may adjust the pacing rate accordingly.