SPECIAL FOCUS MEDICAL & PHARMACEUTICAL PYROELECTRIC
DETECTORS FOR BREATH MONITORING SYSTEMS
PRODUCTS, TECHNOLOGIES AND SERVICES TO HELP IN THE FIGHT AGAINST COVID-19 BVM VENTILATOR SERVES TWO PATIENTS AT ONCE
A makeshift ventilator that can serve two patients simultaneously has been designed by experts at Cranfield University (UK) and built in Georgia Tech (USA) in a matter of days. Developed to help critically-ill COVID-19 patients, this simple low-cost
Bag Valve Mask (BVM) ventilator has a flat-pack design so can be quickly manufactured at scale, costing less than £75 ($100) per unit. The ventilator can be adjusted easily and updated as needed, and can be linked to an oxygen generator, positive end expiratory pressure (PEEP) valves and filters, with power coming from standard wall adapters or 12-volt vehicle batteries. The ventilator device works with ‘positive displacement’, forcing air into the patient’s lungs. This
Typically used with ventilators,
Capnometers continuously measure CO2 concentration in breath, enabling clinicians to check whether ventilators have been correctly set up (intubated) while supporting diagnosis of lung and heart function and other conditions. In the UK, capnography is mandatory for patients anaesthetised in theatre and its broader use is growing in the UK. Pyreos has been supplying its dual
channel analogue infrared detectors for capnography to leading European and Asian medical equipment manufacturers for several years. However, as a result of the COVID-19 pandemic, the company has ramped up the production of its ezPyro, anaesthesia and CO2
detection
products to support OEMs manufacturing these vital systems worldwide. The company is also supporting R&D
projects on ventilation and breath measurement in two universities by offering advice, reference designs and design help. This support includes open- sourcing of relevant reference designs.
Pyreos
process must be controlled to ensure the right amount of air goes in, at the right rhythmic pace – called the ‘tidal volume’. Though each emergency ventilator can serve two patients simultaneously, their air flow is separate to avoid cross-contamination and flow volumes can be controlled independently. A small batch of the devices has already been assembled for testing.
Cranfield University PRODUCING CRITICAL TECHNOLOGIES
Analog Devices is expediting production of its healthcare technologies including the critical measurement and control technologies that are used in medical equipment essential for diagnostics and treatment for COVID-19
patients – such as ventilators, respirators, diagnostic test systems, infusion pumps and patient monitors, as well as in imaging systems such as CT scanners and digital x-ray. “ADI is committed to doing everything we can to ensure supply
and expedite shipments of our healthcare products that populate the critical medical equipment being used in the front line of the fight against COVID-19. We are also leveraging our domain expertise in partnership with biosensor companies, research hospitals and the international Open Source Ventilator project to deliver breakthrough technology and provide design assistance where it is needed most,” said Vincent Roche, president and CEO.
https://pyreos.com Analog Devices 3D PRINTING FACE SHIELDS
Over 150 organisations have joined the coalition assembled by Stratasys to produce 3D printed face shields – a 3D printed visor and a clear plastic shield that covers the entire face. Any 3D printing shop that wishes to help print at least 100 visors can fill out an online form to be invited to join the effort. In Europe, the company is serving as a hub to connect service bureaus with those requesting help. It has also posted the full face shield printing and assembly instructions for anyone to produce face shields on their own. “I have never seen collaboration across our industry the
way I’ve been seeing it over the last couple of weeks,” said Stratasys healthcare segment leader, Scott Drikakis. “The need is dire, but we are getting the kind of commitments from our coalition partners that will make a real difference and help buy time to scale up the manufacturing of shields and other essential supplies. This rapid, adaptive, response is what 3D printing does exceptionally well, and I’m very proud of our employees and partners.”
Stratasys 20 APRIL 2020 | DESIGN SOLUTIONS
www.stratasys.com/covid-19
www.analog.com
A NEW FLOW SENSOR FOR VENTILATORS
Sensirion has developed a new sensor for respiratory devices that allows easy integration into ventilators. The SFM3019 flow sensor, which is
available in high volumes, is offered in a digital and an analogue version and is based on Sensirion’s established CMOSens technology. The sensor was developed on the basis of existing components that have been tried and tested for years and guarantee the highest reliability and precise measurement. The digital version can measure both
oxygen and air, and a mixture of both elements, with the highest accuracy.
Sensirion
www.sensirion.com
www.cranfield.ac.uk
VENTILATOR CONSORTIUM
Renishaw has joined leading companies in the aerospace, automotive, medical devices and motorsport sectors to form the VentilatorChallengeUK consortium, under the leadership of Dick Elsy, CEO of the High Value Manufacturing Catapult. This diverse team is working non-stop to boost production of two proven ventilators, selected by the NHS and manufactured in the UK by Penlon and Smiths Medical. A significant part of Renishaw’s
sites in Gloucestershire and South Wales are now producing precision- machined components for the two different ventilators, with production running seven days a week. Elsy said: “Penlon and Smiths
ordinarily have combined capacity of between 50 and 60 ventilators per week. However, thanks to the scale and resources of the wider consortium, we are targeting production of at least 1,500 units a week...”
Renishaw
www.renishaw.com PERSONNEL PROTECTION
MiniTec has used its aluminium profile system to develop Personnel Protection Screens that can be used by customer- facing businesses including shops and on reception desks, security desks, etc. The screens, which sit on top of existing work surfaces, measure 1m high x 1.5m wide and can be extended with a second shorter corner panel. There is a small gap at the bottom to enable items to be passed through. They have an aluminium frame with clear polycarbonate plexiglass, allowing for ease of use and easy cleaning. MiniTec is also able to adapt the screens
for specific requirements if necessary. MiniTec
www.minitec.co.uk
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