The Complete Artificial Implantable Heart By Santhosh J & Prashanth J Dept of Bio-Medical Engineering Gokaraju Rangaraju Institute of Engineering & Technology (GRIET) Overview of the Discussion: • Introduction • Heart Anatomy & Disease • Effectiveness of Transplantation • Total Artificial Heart Development • A Complete Artificial Implantable Heart • Design of Complete Artificial Implantable Heart • Conclusion Heart Anatomy and Disease • Structure of Natural Heart • Chambers, Valves and major blood vessels • Chambers of Heart: Rt & Lt Atria Rt & Lt Ventricles • Heart Valves: Mitral or Bicuspid Aortic Tricuspid Pulmonary Physiology of Heart • Flow path of blood through Heart: Oxygenated blood flow path Deoxygenated blood flow path Diseases associated with Heart: • The Major disease of Heart: Coronary Heart disease (CHD) (Hardening of heart walls inside the Heart) Congestive Heart Failure(CHF) (Insufficient pumping of blood) Effictiveness of Transplantation: • By definition, “Replacement of diseased/injured heart with healthy donor heart”(which is proved to be extremely difficult) • Differences between Transplantation and Implantation. Total Artificial Heart Development • This is a completely self contained machine • Milestones in the Artificial Heart Technology • 1960s – Surgeons implant the first temporary artificial heart. • 1970s – Engineers develop the ventricle assist device as an alternative to artificial heart . • 1980s – First long term artificial heart results in poor quality of life. VADs show potential for long-term support. • 1990s – Transcutaneous technology eliminate the need for skin-protruding electrical wiring, patients with long-term VADs recover from heart failure. • 2000s – Results of the Abiocor reflect improved quality of life for patients after implantation. Complete Artificial Heart • This device is a permanent artificial heart that is completely self contained with in the body. • Need for going to this device (Since the lack of availability of donor hearts and rejection of donor hearts) Design of Complete Artificial Implatable Heart The subsystems of the device are: • The Heart pump • A Computerized pump controller • A power source (All these subsystems weigh about 2kgs and operates so quietly that a stethoscope is required to hear the sounds) The heart pump is placed from where the ventricles are removed by the surgeons It consists of two HYDRAULIC MOTORS one operates the pumping function to each ventricle and the other one operates the opening & closing of valves. CAPACITY: 9-10 lts per minute DURABILITY: By using the ANGIOFLEX plastic material it gives smoothness and allows less damage to the blood and can withstand for 1,00,000 beats per minute. CONCLUSION • Heart failure is the leading cause of death in India and also all over the World. Most people die from heart failure when the ventricles, or pumping chambers, fail to push enough blood through the body. A solution for this major problem is to adopt the Artificial heart technology which can be affordable.
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