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A Device for the Prevention of Deep Vein Thrombosis

A Device for the Prevention of Deep Vein Thrombosis


The Sree Chitra Tirunal Institute for Medical Sciences and Technology has indigenously developed a device for the prevention of Deep Vein Thrombosis.

  • The institute is located at Thiruvananthapuram and works under the Department of Science and Technology, Government of India.
  • The institute has applied for a patent and has a scientific publication on this technology.

Deep Vein Thrombosis (DVT):

  • The earliest case of deep vein thrombosis (DVT) was described by Sushruta in his book Sushruta Samhita around 600–900 BC.
  • It is the formation of blood clots in deeply located veins, usually in the legs.
  • Normally blood in the veins of the legs is returned to the heart by the contraction of muscles of the legs during walking.
  • DVT is caused by prolonged immobility and bed-ridden state, post-operative immobilization, paralysis of legs, stroke, pregnancy, dehydration, use of certain drugs, travel by long flights without moving, etc.
  • The symptoms of DVT are pain, swelling, redness, warmth engorged surface veins.
  • DVT and pulmonary embolism (PE) are the two main manifestations of venous thromboembolism (VTE).
  • Pulmonary embolism (PE) is a blockage of an artery in the lungs by a substance that has moved from elsewhere in the body through the bloodstream (embolism).

Working of the device: 

  • The detachment of the clot from the veins and its transport to the heart and into the artery carrying impure blood from the heart to the lungs can cause 'pulmonary artery embolism,' a potentially life-threatening complication.
  • The device works by compressing the veins in the legs in sequence so that the flow of blood from the veins in the legs is facilitated.
  • The compression pressure is set in such a way that the veins are compressed but not the arteries.
  • The device is equipped with closed-loop monitoring of compression pressure and electronic controls.
  • Dedicated software is also provided in the device to ensure that safe compression levels are always maintained.
  • It is also equipped with a power supply backup.


  • The cost of the imported device varies from Rs two lakh to Rs five lakh.
    • However, it is estimated that the indigenous equipment can be manufactured and sold for less than Rs one lakh.

Source: PIB