Over the previous year, researchers on the Indian Institute of Science (IISc) have been engaged on options to handle the oxygen scarcity on account of COVID-19. Two key efforts on this course have been the event of oxygen era techniques and oxygen concentrators.
The oxygen concentrator is an indigenous design developed by IISc researchers led by Praveen Ramamurthy, Professor within the Division of Supplies Engineering. The group had already been engaged on oxygen concentrators since March 2020. A prototype able to producing oxygen at greater than 93% purity at 5 litres per minute (LPM) and 82% at 10 LPM was developed by August 2020 itself. The researchers then modified this prototype which now delivers greater than 93% purity oxygen at 10 LPM inside three minutes. The steadiness and efficiency of the system was monitored repeatedly for greater than eight months. Medical trials have been accomplished, and the system was discovered to carry out on par with compressed oxygen cylinders.
Until date, the expertise has been transferred to 24 corporations, and about 35 models have been provided to numerous hospitals. Just lately, the Authorities of Karnataka issued a round for the provision of two models every to 2,508 public well being centres from the licensees, says a press launch.
One other resolution catering to wants of the hospitals is an oxygen era system primarily based on expertise developed by an IISc group together with researchers Arashdeep Singh and Anand M Shivapuji, and led by S Dasappa, Professor on the Centre for Sustainable Applied sciences. The method is predicated on a twin-bed swing adsorption system built-in with storage and discharge vessels, and varied security techniques. In one of many variants, a cylinder-filing mechanism has additionally been integrated utilizing a lift pump. The oxygen produced fulfills the standard necessities prescribed by Indian Pharmacopeia and can be utilized in ICUs/CCUs/OTs and different medical wards. Final month, the primary unit primarily based on this method was put in on the Pobbathi Medical Centre in Bengaluru.
On 15 August 2021, Prof Rangarajan, the Director of IISc, inaugurated an open-source design for a medical oxygen era system with 50 LPM capability. The system shall be put in at St Mary’s Polyclinic in Lucknow. A singular characteristic of this method is the potential to fill about ten 47-litre cylinders at 200 bar stress inside 24 hours, other than supplying oxygen to affected person beds. Preparations are underway to ship the system to the Lucknow hospital.
IISc has additionally signed expertise switch agreements with 4 companies from throughout the nation for putting in oxygen era techniques at varied capacities (50 LPM-1000 LPM) to fulfill the necessities of hospitals. The Hindu