Assignors: DREXEL UNIVERSITY Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: SUN, HUN H., WANG, XIANG Priority claimed from US08/061,360 external-priority patent/US5423326A/en Application granted granted Critical Publication of US5309917A publication Critical patent/US5309917A/en Assigned to NONINVASIVE MEDICAL TECHNOLOGIES, LLC reassignment NONINVASIVE MEDICAL TECHNOLOGIES, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US75803491A priority Critical Application filed by Drexel University filed Critical Drexel University Priority to US07/834,425 priority patent/US5309917A/en Assigned to DREXEL UNIVERSITY reassignment DREXEL UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST. Original Assignee Drexel University Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Sun Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US07/834,425 Inventor Xiang Wang Hun H.
Google Patents System and method of impedance cardiography and heartbeat determinationÄownload PDF Info Publication number US5309917A US5309917A US07/834,425 US83442592A US5309917A US 5309917 A US5309917 A US 5309917A US 83442592 A US83442592 A US 83442592A US 5309917 A US5309917 A US 5309917A Authority US United States Prior art keywords time signal patient amplitude value derivative Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5309917A - System and method of impedance cardiography and heartbeat determination US5309917A - System and method of impedance cardiography and heartbeat determination