BIOMED ARENA    Volume:1, Issue:1, May 2015 

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Automated Blood Transfusion System   -Review Article


      Automated Blood Transfusion System:

Using a dual lumen tube, anticoagulant is fed to the operation site to be mixed immediately with shed blood and sucked away. Blood and anticoagulant are carried into a sterile reservoir by vacuum where it is filtered to remove large clots and debris. Blood and anticoagulant are drawn from the collection pot into a centrifuge to be processed through middle valve (v-1). Now only v-1 will operate, v-2 and v-3 will remain off. A sterile isotonic saline solution is pumped into the centrifuge bowl thorough first valve (v-2). Blood is washed with a saline solution and required blood cells are separated from waste products inside the centrifuge. Packed blood cells are collected in a separate bag. Now these required blood cells are sent towards patient by controlling the path of blood.

 

First blood will pass through last valve (v-3) to the Flow Control Circuit for controlled flow of blood towards patient. This flow controller will be driven by DC motor. Now only v-3 will operate. Then this blood will pass through temperature controller circuit. If temperature of blood falls below 360C heater will start to bring the temperature of blood to normal and if temperature goes above 380C heater will be turned off. Also there is bubble detector circuit which uses principle of IR transmitter and receiver to detect if there is any air bubble in blood flow, if bubble is detected, this circuit will turn off the whole system and will stop the blood flow towards patient.

 

  Application:

This system can be used on large scale at blood donation camps or at blood banks and also during various cases such as orthopedic surgeries, spinal surgeries, open heart surgeries etc.

 

      Advantages

  Blood Donors: One can donate only required blood components.

   For Patients:

  •          No need to find matching donors.
  •          No worries for rare blood groups
  •          No infectious or immunologic effects after blood transfusion
  •          Less or no blood loss during surgery
  •          Safe method
  •          Faster recovery

 

       REFRENCES

  1.       www.haemonetics.com
  2.       http://cellsaverelite.com
  3.       IEEE XPLORER
  4.       www.uihealthcare.com
  5.       www.wikipedia.com
  6.       Text book of Biomedical Instrumentation-R.S.Khandpur.
  7.       University of Iowa Hospitals and Clinics
  8.       Tata Memorial Hospital, Parel, Mumbai.
  9.       National semiconductor, “LM35 precision centigrade Temperature sensors”
  10.       www.atmel.com
  11.       www.transfusiongdielines.org.uk

 



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