SteriPak is a kit that converts end of life gas cylinders into autoclaves for sterilisation of medical and baby equipment.
A SteriPak autoclave only requires water and a heat source to achieve total sterilisation. While most developed countries treat surgical equipment like scalpels and forceps as one use items, many countries in Sub-Saharan Africa are forced to reuse them due to their expense.
SteriPak will give people access to low cost, effective sterilisation where it was previously unavailable. The result of this will be lower infant mortality rates, surgical infection and an overall increase in quality of life.
SteriPak is designed to be easy to operate; place items to be sterilised on the base plate, pour in 2 litres of water, tighten the lid using six the outer clamps, apply heat to base, when thick steam comes out of the top valve close it, leave for fifteen minutes, remove heat and open top valve, stand for 5 minutes and remove lid, the items are sterilised.
Steripak is an ongoing project, currently in its prototyping phase. If you're interested in getting involved, please contact us here.
SteriPak was exhibited in the Global Irish Design Challenge Exhibition in Dublin Castle 2016 and Kilkenny Design Centre 2017
A SteriPak Autoclave, for intuitive use any parts that the user interacts with are colour coded blue.
A SteriPak Kit is designed to cost less than $10 when mass produced.
Before and After
SteriPak re-uses 99% of the material from the gas cylinder to minimise waste
The SteriPak valve incorporates pressure regulation, safety and air purging features. The spring is calibrated to maintain the 15 psi of steam pressure to achieve 121°C for 15 minutes necessary to sterilise equipment.
The conversion process is carried out at local workshops where the gas cylinders are exchanged for finished SteriPak autoclaves
Testing early prototypes was integral to designing of the current generation of SteriPak kits.
The Bantamweight Double Zero is a low cost, pneumatic motorcycle for personal transport. It uses a 3 cylinder pneumatic radial piston engine to power it up to a top speed of 80km/h. The inspiration for the project was to re-imagine the Honda Super Cub if it was originally designed in the 21st century. The Vagrant was designed to be simple and easy to fix, the chassis is based on a single extruded Aluminium profile so that it can be mass produced cheaply and efficiently recycled at the end of its life cycle.
Research in developing countries led to the conclusion that bikes and scooters are typically used on a variety of surfaces, including tarmac, dirt, gravel and mud. Existing tyres are inherently compromised because they focus on a single surface type. To this end, the Vagrant utilises a new tyre concept called Nomad. Pressurised air from the Vagrant’s air tanks allows the Nomad to adapt to any terrain without stopping.
Unlike a typical tyre, the Nomad has 3 pressure chambers, a central chamber and a pair of lateral chambers. On tarmac the central chamber is inflated to a high pressure giving the Nomad the shape and performance of a road biased tyre, when the lateral chambers are inflated the tyre widens and grooves that were thin begin to expand, this increases the space between the thread blocks to improve off-road performance.
Pnuematic Urban Reconnaissance Vehicle
The main elements of the chassis are extruded from a single, recycled Aluminium profile to facilitate mass production.
The driveline feeds pressurised air from the cylinders into a central plenum via pressure regulators at 12 psi. The plenum feeds the radial piston engine, a Huco Dynatork 3 typically used for driving conveyor belts in food processing plants. The Dynatork is modified in this application to run higher boost, this allows it to develop only 3000w of power but the 20Nm of torque at low revs ensures effortless low speed drivability.
Double Zero is powered by compressed air which is stored in 3 pneumatic cylinders. Pnuematic cylinders are far less harmful to the environment at the end of their life than batteries. However they have far lower energy density, so they are more suited short trips.
The front suspension is a refinement of a Hossack type system. The operational advantage is that the bump to stroke ratio of the damper can be changed with a single bolt. This system was developed because the bending moments associated with a telescopic fork arrangement would require over-engineering of the extruded frame.
The tyres are Nomad Dual-Mediums which were developed for a Michelin competition. They take advantage of the fact that the Double Zero is a pneumatic vehicle, unlike a typical tyre they consist of 3 separate pressure chambers, the relative pressure of which transforms the tyre's shape and terrain application.
As a low speed city vehicle, the majority of safety concerns stem from the pressurised cylinders.
Specifications and application
The Bio-Inspired Micro Gravity Exercise Concept was developed for NASA's Bio-Inspired Advanced Exercise Concepts Challenge, which it won.
BIMGEC is an ultra-lightweight, compact workout machine designed to offset the osteoporosis and muscular atrophy associated with long-term space travel.
The BIMGEC can be used as a weight emulating machine for resistive training, a rowing machine for aerobic workouts and also incorporates an eccentric bias function to increase the effective load for the eccentric phase of a rep.
In resistive mode, BIMGEC can deliver the equivalent of 12kg to over 180kg of resistive force with infinite resolution between these settings. The ratio of eccentric gain can be customised anywhere between 0% and 100% of the concentric load, providing over 360kg of eccentric load at maximum setting. In Aerobic mode, workouts requiring up to 750 watts of continuous power can be achieved.
The entire system weighs 9kg and is roughly the size of a shoebox.
BIMGEC was awarded a Red Dot Award for Life Sciences and a Platinum A' Design Award for Engineering and Technical Design
Bio-Inspired Micro Gravity Exercise Concept
The spring battery is designed to provide constant resistive torque to angular movement to emulate weight as opposed to typical springs which increase resistance proportionally to deflection.
The spring battery delivers a constant resistive torque, so the effective "weight" that the user experiences is varied by changing the gear ratio between the input and output shafts. This is done by changing the pitch angle of a set of drive wheels between a pair of profiled plates by rotating the selector housing to the required setting. The drive is transmitted through a pressurised variable viscosity traction fluid.
The load profile can be varied between aerobic, resistive and eccentric bias settings. The mode is selected using the blue lever, which engages different epicyclic gearsets to a motor which can increase the eccentric load gain, set using the motor control circuit, by up to 100% or act as a generator to charge the battery pack in aerobic mode.
The epicyclic gearset and motor/generator unit are located at the far end of the main shaft to the spring battery. The Lithium Polymer battery pack can be seen directly under the blue lever.
Human Machine Interface
Finally, the resistive load is delivered to the user via the toothed tensile belt. The belt drives a contrarotating pulley attached to the output from the load variator which is mounted concentrically to the mainshaft. The blue eye at the end of the belt can be attached to various quick release interfaces depending on the required exercise. For squats, the eye is attached to a squat harness, while a short bar would be attached for inclined rows for instance.
VelAir is a mobile urban pollution sensor. Designed to be wearable or bike mounted, VelAir detects concentrations of oxides of Nitrogen and other harmful compounds that proliferate in cities. It charts these readings using a built in GPS and uploads them to the cloud via integrated wireless chip. The cloud data is collated and arranged on a third party mapping app (such as Google Maps). This allows pedestrians and cyclists to avoid smog hotspots by automatically rerouting them in real-time.
5 generations of prototypes were developed, later ones performed all the tasks described above.
VelAir won the inaugural Trinity Science Gallery Strange Weather Hackathon and the V&A Open Collaborative Making event for London Design Week.
Urban Pollution Mapping Wearable
A one-touch mechanical cam-locking system was developed for handlebar mounting. It is designed to last for decades rather than years
The aesthetic was inspired by concrete pillboxes
Prototype 5 incorporated all the systems necessary for commercial operation along with a novel sample processing chamber to condition the sample air for higher accuracy. This was the first prototype to utilize a completely in-house designed circuit board. Some of the systems involved were influenced by concepts developed for the Kumo respirator.
Kumo is a respirator that allows users to perform at their peak in hostile environments. Kumo monitors environmental conditions such as temperature and humidity and can interact with other wearables in order to gauge user performance.
Kumo is modular and can be tailored for a variety of climate types. This variant is optimised for Arctic conditions. The cold, dry air is inhaled through the filter where it is heated and then humidified to ideal levels for peak performance.
Kumo was shortlisted out of over 1400 entries for the Oakley Disruptive by Design competition
Personal Climate Control
Kumo can be customised for various harsh environments. This variant is optimised for cold weather performance.
For arid conditions the heating module can be detached and replaced with an auxiliary particulate filter in seconds.
A lot can happen in one breath
Coco is an outdoor chair upcycled from old shopping trolleys. The galvanised steel frame has excellent weather resistance and is complimented by seat, back and armrests in Teak or Iroko.
The steel frame was cut and hand bent using pliers and homemade jigs. Welding was not considered an option as it would discolour the raw steel finish. The steel was then hand brushed using increasingly fine grades of sandpaper for a warm satin finish. The Teak was cut, routed and sanded before being fitted to the steel chassis. The seat-pan was made in two parts and then pressed together using 200kg of force for a totally seamless union.