Thiruvananthapuram (ISJ): Indian medical researchers have developed a simple, cost effective blood flow meter to track results of open heart surgeries. It is used for precise measurement of blood flow rates, a critical parameter to measure the outcome of open heart surgeries.
Currently, blood flow meters are imported and cost anything between INR 25-30 lakhs (US $34,000-40,000), whereas the home-developed device costs a fraction of it, between INR 50,000 to 100,000 (US $680-1360).
This palm- size device, developed by scientists at the government-funded Sree Chitra Tirunal Institute for Medical Sciences and Technology in Thiruvananthapuram, Kerala measures the flow rate of blood using a novel magnetic method and a signal conditioning technique.
The device has a mechanism to produce a magnetic field, an electronic measurement system and a disposable biocompatible tube fitted with electrodes which are kept over the magnetic field. When blood passes through the tube, under the influence of this magnetic field, a voltage is generated across the electrodes, proportional to the rate of blood flow. The novel method of generation of the magnetic field and detection of the voltage, gives the device better accuracy of measurements.
"This indigenous technology of blood flow meter will considerably reduce the cost of the device to a few thousands from around Rs 25 lakhs and make it available to public hospitals for safer and less expensive cardiac surgeries," said Dr Asha Kishore, Director of Sree Chitra Tirunal Institute for Medical Sciences and Technology.
The device developed at the in Biomedical Technology Wing of the Institute has undergone laboratory tests and preclinical animal evaluations and has all the essential features to perform the necessary functions.
It is compliant with national and international standards and guidelines and is manufactured using components sourced from established supply chains within the country. The Institute has applied for patent and published two scientific papers based on this technology.
Image courtesy: Sree Chira Tirunal Institute for Medical Sciences & Technology