March 6 - 8, 2017 | Berlin
LEADING ENGINEERING SIMULATION CONFERENCE
In modern society, taking a blood sample from a patient became the key factor in verifying any possible abnormal health status. Due to a possible high risk of spreading an infection, a professional with medical experience usually performs the blood sampling. Afterwards, the sample is send to a laboratory for further analysis and the results are submitted to the medical doctor, who discusses the outcome with the patient in a private environment. These steps are very common in the western world, but are far out of reach for developing countries. Therefore, blood sampling has to be simplified and easy to manage to give more people broader access to be checked for any diseases or deficiencies to apply the needed treatment.
The specifications for such a device are high due to the task it has to perform. On the one hand, requirements for this device involve a stable outside hull, easy-to-manufacture components by injection moulding, security mechanisms, surgical syringe and a contamination container to prevent blood from escaping from the device. On the other hand, a novel blood sampling mechanism is required for storing and analysing the blood sample from the patient. Furthermore, such a device must be of the size of a 2€ coin or equivalent. In addition, costwise the sampling mechanism has to be integrated into already existing components, which cannot be put together before hand. Therefore, simulating the blood flow from the tip of the syringe (0.1mm ⌀) until the end of the lateral-flow-assay is crucial. With the help of STAR-CCM+®, the general blood flow could be simulated and the results of the simulations showed the performance of the device. Based on the results changes to the design were carried out for a successful blood flow from the tip of the needle towards the lateral flow assay. In addition, the simulations could demonstrate how the blood will be analysed by the lateral flow assay. Due to the gained knowledge from the simulations of the blood flow redesigns of the device were carried out to fit the task of effective blood sampling.