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Science & Tech.
Pradeep Kumar

20/04/21 10:50 AM IST

SpO2 based Supplemental Oxygen Delivery System

In news

Defence Research and Development Organisation (DRDO) has developed SpO2 (Blood Oxygen Saturation) supplemental Oxygen Delivery System for soldiers posted at extreme high-altitude areas

Highlights
  • Developed by Defence Bio-Engineering & Electro Medical Laboratory (DEBEL), Bengaluru of DRDO,
  • The system delivers supplemental oxygen based on the SpO2 levels and prevents the person from sinking in to a state of Hypoxia, which is fatal in most cases, if sets in.
  • This automatic system can also prove to be a boon during the current Covid-19 situation.
  • The electronic hardware of the system is designed for functioning at extreme altitudes featuring low barometric pressures, low temperatures and humidity.
  • The software safety checks incorporated into the system are critical in ensuring the functional reliability of the system in field conditions.
Functioning
  • The system reads SpO2 levels of the subject from a wrist-worn pulse oximeter module through wireless interface and controls a proportional solenoid valve to regulate the oxygen supply to the subject.
  • The oxygen is delivered from a lightweight portable oxygen cylinder through nasal nares.
  • The system is available in various sizes from one litre and one kg weight with 150 litres of oxygen supply to 10 litres & 10 kg weight with 1,500 litres of oxygen supply which can sustain for 750 minutes with a continuous flow of two liters per min (lpm).
Significance
  • The system is a boon in the current pandemic as it can be used in the household for moderate Covid patients for Oxygen flow therapy with flow controlled at 2/5/7/10 lpm flow.
  • The automatic usage has huge advantage in the household, as the oximeter would give an alarm for lower SpO2 value.
  • It will automatically increase/decrease the O2 flow based on SpO2 setting which can be auto adjusted at 2, 5, 7, 10 lpm flow rate.
  • The optimal O2 flow rate conserves the O2 resources/O2 management and greatly increases the endurance.
Source: PIB

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