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:
Dec. 29, 1992
Filed:
Dec. 07, 1990
Applicant:
Inventor:
Raul Chirife, Buenos Aires, AR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
1284 / ; 128713 ;
Abstract
A sensor for developing a control signal to be injected into the mechanism of a cardiac diagnosis and therapy device is disclosed. An external or internal pulse generator associated with the sensor includes a pulse width timer and an oscillator circuit to deliver constant voltage pulses through a capacitor to a lead for delivery of therapy or diagnosis. Means for detecting the peak trailing edge voltage or the current are included as an indicator of the volume of blood present in the heart or the thoracic volume at the time of stimulation. The volume signal is then directed to implantable or external devices by a control signal output to be used in the circuit of the other device.