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Human liver plays a major role in metabolizing medications. One of its metabolic roles is to activate prodrugs into their active form enzymatically. The proposed structure below can be considered as a basic concept of utilizing a liver-on-a-chip for evaluating drug response. One example that of paramount interest to cardiologists is the variable response of their patients to an antiplatelet agent...
Neurological assessment is a commonly mental screening evaluation for initial neurological disorders in patients. Mild Mental Status Examination is a standard screening test which is used as one of the tools for diagnosis. In Thailand, Thai Mental Status Examination was used to screen the Thai-patients.
In vitro replication of traumatic spinal cord injury is necessary to understand its biomechanics and to improve prevention devices and care. During the trauma, the spinal cord withstands an impaction at high velocity. In order to fully assess spinal cord compression, a physical spinal cord surrogate instrumented with bare optical fibers is a promising avenue. The sensing is based on light transmission...
The design and simulation of some proposals of unconventional and conventional dental implants and their results are presented. The process of obtaining models with reverse engineering in Mimics, mechanical simulations in ANSYS and some results and tests with an algorithm of remodeling meant to simulate the behavior of the possible influence of stem cells in the proposed implants are explained.
Measurement of the activated clotting time (ACT) is an important and regularly performed task in hospitals for thrombosis prevention. Required adjustments of anticoagulation therapy are most often done manually by using a therapeutic look-up table adapted to patient weight. This process is prone to human errors and an automated solution for calculating the required change and readjusting the individual...
Vital sign monitoring system mainly monitors the physiological parameters of the patient. The commercial product is usually designed as all-in-one device. However, the increasing of new medical sensors causes the researchers need to develop monitoring platform for their own sensor. The purpose of this study is to redesign the state of the art vital sign monitor for various type of sensor device based...
Transdermal administration might be an interesting alternative to current routes of administration. It is non-invasive, avoids gastric side effects, and improves bioavailability of the molecules. However, due to the low permeability of the stratum corneum, a permeation enhancement strategy is required to make a large number of molecules suitable to this mode of administration. To overcome those limitations...
Knee osteoarthritis (OA) is one of the most widespread orthopedic disease that affects the elderly. The present study aims to evaluate the biomechanical effects of bilateral osteoarthritis on elderly patients compared to a control group using stabilometry parameters. The used parameters were center of pressure (CoP) 95% confidence ellipse area, CoP path length and maximum path velocity, CoP range...
Human balancing on a balance board is modelled as a delayed proportional-derivative control mechanism with unknown feedback delay. The mechanical model implies that there exists a critical delay, for which no control gain parameters can stabilize the system. This theoretical critical delay is determined by numerical analysis for different geometries of the balance board. Then the results are compared...
This paper investigates the effect of the anorectal angle on continence using a physical model of the anatomical system. A method to fabricate, measure and control a physical model for the simulation of human faecal continence is presented. A model rectum and associated soft tissues, based on geometry from an anonymised CT dataset, was fabricated from silicone and showed behavioural realism to ex...
It is well-known that improvements in seat comfort are needed as a medical solution to prevent pressure ulcers. In recent years, pressure ulcers have become an increasing social and medical issue and manufacturers are trying to respond appropriately for better solutions. The contact interaction between human buttock-tissue and seat cushion is an important factor in users' sense of comfort. In this...
We introduce a model-based approach for computationally efficient signal detection and discrimination, which is relevant for biological signals. Due to its low computational complexity and low memory need, this approach is well-suited for low power designs, as required for medical devices and implants. We use linear state space models to gain recursive, efficient computation rules and obtain the model...
For an implantable system for the recording of brain signals from neonatal mice the design specifications for the weight and the size of a implantable system are very tough. The animals are very small and light weight (1–3 cm, 2– 3 g) and the recording data rate is very high (3,5 Mbit/s). Thus, the system has to be extremely small. With state of the art technique it is not possible to set up a wireless...
We present a system engineering approach to a problem of DNA damage-repair in human cells. We discuss chosen control systems existing in the cells and demonstrate that they constitute an almost perfect fault tolerant system. We discuss the consequences of gaps in this system and explain why it cannot be completely perfect.
Assistive Technology (AT) maintains and improves the individual's functioning and independence, thereby promoting their well-being. But today only 1 from each 10 people in need have access to AT due to high costs and a lack of awareness, availability, personal training, policy and financing. By 2050, more than 2 billion people will need at least 1 assistive product with many elderly needing 2 or more...
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