Aerosol Generating Procedure (AGP) Shield: Supporting Our Frontline NHS Workers

Aerosol Generating Procedure (AGP) Shield: Supporting Our Frontline NHS Workers

Date: Monday 4 May 2020

News Aerosol Generating Procedure (AGP) Shield: Supporting Our Frontline NHS Workers

An opportunity to minimise risk of exposure to COVID-19 for frontline NHS staff involved in both the intubation and extubation processes has been identified by senior NHS practitioners.

MTC engineers, working in collaboration with Rolls-Royce and Dr Ian Renfrew, Consultant Interventional Radiologist at BARTS alongside Dr Paolo Perella, Anaesthetic Registrar at Royal London Hospital, supported by Innovate UK, have over a 7 day period prototyped, developed and seen operational a fast make AGP Shield for use with Ventilators. Wider applications for the shield have also been identified, further aiding the safety of front-line medical staff.

It is anticipated that the NHS may need several thousand of these shields, with the MTC set to manufacture the first batch of up to two hundred units, which can be quickly scaled up across multiple supply chains in order to meet higher demands.

The first two hundred AGP Shield units have been successfully fulfilled and were fully funded by the MTC. Due to ongoing demand, we are currently seeking further sponsorship and continue to take orders from hospitals. If your company or organisation wishes to fund AGP Shields, or sponsor a local hospital, then please do not hesitate to get in touch by emailing us at

Where funding is not available, hospitals and institutions may optionally wish to purchase the units. Please enquire using the below form for pricing and availability.

The shield has undergone multiple design changes following trials in three hospitals which has helped development from the initial prototype through to the manufacture of the first production units. Feedback from medical professionals suggests that these shields could not only be used during intubation and extubation procedures but also several other medical procedures beyond COVID-19. This means they could also potentially be used in Intensive Care Units (ITU’s) and Theatres. MTC engineers are now working with Aston Martin, and Multimatic to refine the initial design enabling the shield to be made in one-piece. Aston Martin is also utilising state of the art cutting machines at Gaydon, to cut out the silicone components that are used in the assembly of the box. These advances will further aid the speed of production and overall ability to meet NHS demand.

The first test assemblies of a vacuum formed, single piece design which is faster to make, lighter, simpler, cheaper and stackable, have been completed and delivered to St Bartholomew’s Hospital in London for testing. The vacuum formed parts have been supplied by MultiMatic, a supplier to Aston Martin, using a temporary tool for proof of concept. An innovative carbon fibre tool is expected to follow.

Technical design packs of the AGP Shield are available for download in a flat-pack, fabricated and vacuum formed version, ensuring other manufacturers also have access to these designs which will be open source. In addition, the shields will also be made available as flat-pack self-assembly kits which can be deployed quickly and assembled on-site with ease.



Arup CFD Study

A recent CFD study, completed by Arup, analyses the spread and movement of the virus droplets and aerosol airpaths within the AGP shield. By simulating the airflow patterns and identifying the trajectory of the virus particles emitted from a typical COVID-19 patient, the report concludes the shield is up to 90% effective at trapping and extracting particles when a suction tube is placed vertically on the side. You can read the full report by downloading the document below.


File downloads shown below contain design packs for the AGP shield. These are available as a free open-source download. Simply click on the package you want to download.

Please note, all downloads are subject to terms and conditions shown below.

AGP Shield: Enquiry Form AGP Shield: Enquiry Form

Filesize: (65 KB)

Terms and Conditions

By downloading this file you accept these terms and conditions and agree to be bound by their provisions: You are granted a free of charge non-exclusive, non-transferable license to manufacture a maximum of 1000 Intubation Shields of either design on a not for profit basis. You may not sub-license, re-sell, rent, lend, assign, gift or otherwise transfer or distribute the content of the files or the rights granted. All rights in and to the content of the files, including, without limitation, all copyright and other intellectual property rights relating to the content, are retained by the MTC. The MTC reserve the right to elect at a later date to revoke or amend the content of the files for any reason. The content is provided “as is” without representation, warranty or condition of any kind, either express or implied, including, but not limited to the implied representations, warranties or conditions of merchantability, or fitness for a particular purpose.

AGP Shield Enquiry Form

MTC is producing small quantities of fully assembled AGP Shields. If your institution or hospital requires any prebuilt units, please enquire using the form below.

*Denotes required form fields

(e.g. calling ahead, contact person/number)

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We found the staff at the MTC were very knowledgeable, and communicated well and in great depth. By working with the MTC we were able to meet and discuss projects with a range of potential customers.

Tony Alderton
Plant Manager, TTI Group Ltd