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Home / bionics heart / science / technology / Bionic heart (Artificial heart) Part II

Bionic heart (Artificial heart) Part II

Gaurav Garg Add Comment bionics heart , science , technology

bionic heart virtual heartIn Continuation to my last post (

Technology Updates: Bionics Heart (Virtual heart) Part 


II) about the Bionic heart here it s shown how can it be implemented and different elements of it s working 

The Bionic Heart

The  bionic  heart  weighs  about  2  pounds  and  is made of titanium and plastic. It can pump more than 
10  liters  of  blood  per  minute,  which  is  enough  for everyday stuff like walking. This works in a different 
way from a real heart. A real heart can pump blood to  the  lungs  and  the  body  on  each  beat.  It  sends 
blood to the lungs and then to the body every other beat, instead of both at the same time. This helps to 
keep the artificial heart small, and there is still plenty of blood flow for normal life. There are areas in the heart called pacemakers that send electrical signals to the rest of the heart, setting the  speed  or  pace  of  the  heartbeat.
 They  help  it speed up during exercise or hard work, and to slow down  again  during  rest.  If  natural  pacemakers  are injured,  a  miniaturized  medical  device  called  a ‘cardiac  can  be  implanted  in  the  chest  wall. pacemaker’  Pacing  leads- Fixed-rate  pacemakers  produce constant  electrical  impulses  at  a  rate  preset  by  the healthcare provider. Demand-type pacemakers have a  special  component  that  allows  them  to  monitor the  heart  and  generate  impulses  only  when necessary.

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artificial heart system
 Hydraulic pump - The basic idea with this device  is  similar  to  the hydraulic  pumps used in  heavy  equipment.  Force  that  is applied at one point is transmitted to another point using an in compressible fluid. A gear inside the pump spins at 10,000 revolutions per minute (rpm) to create pressure.

 Porting valve - This valve opens and closes to let the hydraulic fluid flow from one side of the artificial heart to the other. When the fluid moves to the right, blood gets pumped to  the  lungs  through  an  artificial  ventricle. When the fluid moves to the left, blood gets
pumped to the rest of the body.

Wireless energy-transfer system - Also called  the  Trans-cutaneous Energy Transfer (TET), this system consists of two coils,  one  internal  and  one  external,  that transmit  power  via  magnetic  force  from  an external  battery across  the  skin  without piercing  the  surface.  The  internal  coil receives  the  power  and  sends  it  to the internal battery and controller device.

 Internal battery - A rechargeable battery is implanted inside the patient's abdomen. This gives a patient 30 to 40 minutes to perform certain  activities,  such  as  showering,  while disconnected from the main battery pack.

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 External battery - This battery is worn on a Velcro-belt  pack  around the  patient's  waist. Each rechargeable  battery  offers  about  four to five hours of power.

 Controller - This small electronic device is implanted in the patient's abdominal wall. It monitors and controls the pumping speed of the heart.

 Programmer- The programmer enables the physician  to  evaluate  the  pacemaker’s performance  and  change  its  setting  non-invasively.  The  programming  consol  is made up of carefully tested, complex circuit boards that are bounded together in a sturdy unit.  To  facilitate  programming,  the software provides high speed processing and easy  operation.  At  the  touch  of  a  single button,  the  unique  automated  follow-up feature  delivers  customized  information  on pacemaker function and cardiac activity  for therapy  that  is  specially  tailored  to  each patient.




DRAWBACKS


There are few side effects or surgical complications associated with artificial pacemakers but, like any man made device, they are subject to failure. They do need to be checked regularly. All pacemakers are sensitive to electrical interference from microwaves and electrical generators and hence vary in degree, depending upon how well shielded they are.


CONCLUSION


Bionic heart has helped disabled persons to enjoy their life. Their application to military, medicine, business etc helped the human species to live an easier and simpler life. Certain these devices are life saving devices. Hopefully scientists will be able to overcome all the issues, making it possible to develop an immortal superhuman.

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