The 3D-Printed ‘Doffing Units’ deployed at Omandurar Medical College and Hospital, Chennai, Tamil Nadu, developed by Deep tech startup Tvasta.
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Deep tech startup Tvasta Manufacturing Solutions, founded by IIT Madras Alumni, has collaborated with Saint-Gobain, a leading multinational company, to develop a 3D-printed Doffing Unit to protect India’s healthcare workers in the frontlines against COVID-19.

Two Doffings Units have already been launched with a third one under construction, a release said.

The first such unit has already been deployed at a Government Hospital in Kancheepuram near Chennai, Tamil Nadu, while the second unit has been established at Omandurar Medical College and Hospital, Chennai.

The Foundation Stone for the third Doffing Unit has been laid at Government Medical College and Hospital, Thiruvalluvar.

‘Doffing’ is the procedure of ‘effective and safe’ removal and proper disposal of PPE. Such Doffing Units are critical for doctors, nurses and other healthcare workers to sanitize themselves after their shifts, safely remove the PPE kits and dispose of them properly. This will ensure that the healthcare workers can go home without taking the risk of carrying the infection.

The major advantage of a 3D Printed Doffing Unit is that the time spent by construction workers at the Hospital, which will be filled with COVID-19 Patients is minimal. The units are printed offsite with only assembly happening onsite – the hospital. This particular structure was built using Tvasta’s 3D Printing facility in Perungudi, Chennai and transported to the construction site in a modular manner.

The concrete 3D printing technology is a ‘Ready-to-Implement Methodology’ with no lead time on manufacturing, which significantly reduces the construction time. This ‘Made In India’ technology has the potential to change the term ‘building’ to ‘printing’ in the near future

Tamil Nasu Minister for Medical and Family Welfare Ma. Subramanian inaugurated the Doffing Units at Government Headquarters Hospital, Kancheepuram, and Omandurar Medical College and Hospital, Chennai, on July 16, 2021, while also laying the foundation stone for the unit coming up at Government Medical College and Hospital, Thiruvalluvar.

Lauding Tvasta and Saint-Gobain for taking up this initiative, Minister Ma. Subramanian said that Saint-Gobain Company has provided financial support under CSR (corporate social responsibility) initiatives to set up oxygen generators and these Doffing Units at Government Hospitals, which will help frontline healthcare workers to safely remove their PPEs.

These Doffing Units will be a major boost to healthcare infrastructure in India. It is integrated with equipment such as UV-C sterilisation box, automatic sanitiser dispenser, and an automatic soap dispensers. EPMCR, a design consulting agency based out of IIT Madras Research Park, partnered with Tvasta and Saint Gobain to ensure that the structure is designed in an optimal manner for reduced risk of exposure and easy sanitation.

Tvasta Manufacturing Solutions Co-founder Parivarthan Reddy said, “In these trying times, it is absolutely necessary to have a safe and well-equipped Doffing Unit to ease the burden and a bit of worry of the healthcare professionals. Tvasta and Saint-Gobain are planning to work further to contribute to the valiant effort being undertaken by healthcare professionals.”

On the occasion of inaugurating the doffing unit, Loic Jourdaine, R&D, Director, Saint-Gobain Research India said, “Saint-Gobain India is constantly innovating and providing value-added solutions to help address the country’s crucial needs. We aim to prioritize the hygiene and safety of the healthcare workers by contributing with necessary relief support.”

Doctors, nurses and other frontline workers returning from treating patients in COVID wards can directly enter the doffing unit to sanitise themselves. The 150 Square feet Doffing Unit is equipped with a wash basin, Water Closet, and shower. A special provision for PPE disposal is provided with a disposal chute to minimise the contamination from the PPE. This design and selection of the equipment have been regarded as the minimum requirement to ensure the safety of frontline workers, the release added.

The unit is constructed using innovative concrete 3D printing technology. This technology offers a significant reduction in time and cost of the unit.  Plumbing and electrical lines are integrated along the 3D printed walls. This helps in quick commissioning of the unit at site. The walls are 3D printed with an optimal design with positioned gaps. This significantly reduces the raw material usage and enhances the thermal insulation making it a more sustainable structure compared to conventional structures.

Tvasta Manufacturing Solutions is part of the new incubator of the Ministry of Housing and Urban Affairs, Government of India, called ‘ASHA Incubator,’ established at IIT Madras.

Tvasta was co-founded by three IIT Madras Alums of 2016 Batch – Adithya VS (Dept of Mechanical Engineering), Chief Executive Officer, Vidyashankar C. (Dept of Electrical Engineering), Chief Operating Officer, and Parivarthan Reddy (Dept of Mechanical Engineering), Chief Technology Officer.

What is Concrete 3D Printing?

Tvasta’s ‘Concrete 3D Printing’ is an automated manufacturing method for constructing three-dimensional real-life structures (at all realisable scales). The technique utilises a Concrete 3D Printer – a Tvasta product – which accepts a computerised three-dimensional design file from the user and fabricates a 3D structure in a layer-by-layer manner by extruding flowable material akin to concrete.

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