Accession Number : ADD000958

Title :   Cardiac Programmer for a Coronary Blood Pump.

Descriptive Note : Patent,


Personal Author(s) : Ragsdale,Charles W

Report Date : 07 Aug 1973

Pagination or Media Count : 6

Abstract : The patent discloses a programmer system for driving a complementary coronary blood pump disposed at a nonthoracic location in delayed synchronism with the electrocardiogram waveform of a subject. Selected characteristics of the electrocardiogram signal are utilized to provide a control pulse, which control pulse actuates a valve mechanism to effect operation of the blood pump. The control pulse is generated by the system after a predetermined time period from the occurrence of the selected electrocardiogram characteristics, the time delay being substantially equal to the propagation time of a coronary ventricular pressure pulse from the thorax region of the subject to the remote blood pump location. In this manner, synchronous cardiac assistance can be effected at any suitable point in the arterial system of the subject.

Descriptors :   *Patents, *Mechanical organs, *Control systems, Heart, Logic devices, Signal processing, Programmers, Bioengineering

Subject Categories : Medical Facilities, Equipment and Supplies
      Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE