Due to the COVID-19 pandemic situation and a number of hospitals, there is a shortage of personal protective equipment. The 3D printing community, trying to help get involved in 3D printing of face shields, which – according to those provided by medical staff – enable their role. The matter of 3D printing looks different – more complicated equipment, such as N95 type protective masks, medical equipment components or ventilators. Does it make sense using 3D printing to manufacture this type of equipment like ventilator yourself? And is it safe?
In the face of this situation, the MHRA, i.e. the British Office for Registration of Medicinal Products and Medical Devices has issued a document that must take into account the clinical recommendations that must be met by a ventilator made by 3D printing to be able to use a United Kingdom (UK) used during the COVID-19 pandemic. A comprehensive document is described when a ventilator can bring therapeutic benefit and when it poses a threat to the patient’s life and health.
MHRA focuses on devices that can be used in short periods of patient stabilization for several hours – in extreme cases, as maintaining the necessary minimum, this can be extended to one day. In the document, each of the aspects considered has the following levels of requirements:
The document considers the following aspects:
In all of the above points, special emphasis is placed on patient safety and minimizing the possible risk of infection of the patient’s respiratory tract. Although the global situation is a crisis, this does not mean that all safety standards cease to apply – the viewer gathered in the standards and directives should be used, and the guidelines set out therein should be followed as much as possible. It takes huge responsibility to make a ventilator using 3D printing technique.
The document also contains detailed procedures for testing ventilator made with use of 3D printing technology, which strictly specify parameters regarding oxygen consumption or the value of the transitional input flow rate. When proposing your own device, you should be aware that the creator is obliged to know the answers to more or less complicated questions (e.g. How much oxygen does the ventilator use , Does it have an emergency battery supply?, Is it equipped with the necessary alarm informing about flow problems gas?).
The fact that MHRA does not expect the device to be CE certified does not mean that the devices do not have to comply with restrictive guidelines. On the contrary – for the safety of patients, fast-build ventilators using 3D printing technology must meet a number of requirements (defined in detail) to help and not to save lives.