J. Mayer, P. Junger, L. Hokenmaier, and P. P. Pott, “Wearable Wake-up System for CCHS Patients,” Current Directions in Biomedical Engineering
, vol. 8, no. 2, Art. no. 2, 2022, doi: doi:10.1515/cdbme-2022-1063
G. A. Giacoppo, J. Meiringer, M. B. Schäfer, J. Mayer, M. da Silva, L. Finke, and P. P. Pott, “Influence of a fixed twisting zone on Twisted String Actuation,” presented at the ACTUATOR22, Mannheim, 2022.
J. Mayer, M. B. Schäfer, J. Liu, G. A. Giacoppo, T. Markert, S. Matich, P. Brunner, and P. P. Pott, “Hand-Held Device for Force Estimation during Tool-Tissue Interaction,” presented at the ACTUATOR22, Mannheim, 2022.
AbstractWhen manipulating tissue during medical interventions, high-accuracy movements are important to avoid injuries. However, feedback is limited and it is hard to establish control loops to ensure correct movements. We propose the use of a novel highly compact 6-axis force / torque sensor (Ø 10.5 mm x 11.0 mm) within a hand piece to determine low forces and torques during various small-scale procedures including gentle tool-tissue interaction. For a first validation of the system, different venepuncture cannulas were connected to the sensor top and driven into skinned fruits (toma-toes and grapes) as well as into a silicone block. During insertion of the needle tips, maximum forces of 74 – 158 mN (tomato) and 51 - 161 mN (grape) were recorded, and steadily increasing forces in the range of 0 – 250 mN when insert-ing needles 7.5 mm into silicone. For a 0.99 g screw nut (9.73 mN), the measured gravitational force was 10.6 ± 1.5 mN during ten measurement sets. During the insertion, needle torques of up to 9.5 mNm were observed. Different cutting phases were seen similar to the phases during needle penetration testing. We conclude that the compact measurement setup used is suitable to measure the low forces and torques occurring when cutting soft, aqueous human tissues with or without skin-like layers.
L. E. Eisenhardt, J. Mayer, and P. P. Pott, “Development of an app-controlled simple, wearable teeth grinding sensing device,” Current Directions in Biomedical Engineering, 2021.
AbstractTeeth grinding is, due to its various impacts on the
human body, a highly discussed issue in dentistry. It can
damage the tooth structure or cause pain due to muscle
tension. At the moment, there is neither a satisfactory
diagnostic nor a comprehensive treatment option. This paper
deals with the development of an app-controlled, small,
portable sensor unit that can be used by patients to monitor
their teeth grinding in everyday life. It also offers a treatment
option due to an implemented biofeedback option. To
achieve the most cost-effective device possible, only off-theshelf
electronics and no proprietary software were used. In
initial tests, the measuring device showed high level of
measurement accuracy when performing measurements
without feedback at rest (f_score=-0.025...0).