Purpose: In this study, a simulator for training lateral ventricular puncture (LVP) was developed using three-dimensional (3D) printing technology, and its function of improving the skills of LVP in young interns was evaluated.
Methods: A virtual 3D craniocerebral simulator of a 51-year-old female patient with hydrocephalus was reconstructed with 3D printing technology. The anatomical and practical validity were assessed by all interns on a 13-item Likert scale. The usefulness of this simulator was evaluated once a week by two neurosurgeons, based on the performance of the interns, using the objective structured assessment of technical skills (OSATS) scale.
Results: The Likert scale showed that all participants agreed with the overall appearance of the simulator. Also, the authenticity of the skull was the best, followed by the lateral ventricles, analog generation system of intraventricular pressure, cerebrum, and the scalp. This simulator could help the participants' learning about the anatomy of the lateral ventricle, effective training, and repeating the steps of LVP. During training, the interns' ratio of success in LVP elevated gradually. At each evaluation stage, all mean performance scores for each measure based on the OSATS scale were higher than the previous.
Conclusions: The 3D printed simulator for LVP training provided both anatomical and practical validity, and enabled young doctors to master the LVP procedures and skills.
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http://dx.doi.org/10.1080/02688697.2021.1922608 | DOI Listing |
Materials (Basel)
March 2025
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China.
Asphalt pavement has become a vital component of modern highway construction due to its high wear resistance, short construction period, economic viability, and excellent skid resistance. However, increasing traffic volume has heightened the structural performance requirements of asphalt pavement, especially during compaction. The compaction degree of asphalt mixtures has emerged as a key indicator for assessing construction quality.
View Article and Find Full Text PDFMaterials (Basel)
February 2025
The Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Łukasiewicza 5 St., 50-370 Wroclaw, Poland.
The study investigates the mechanical characterization of PET-G components fabricated via Fused Deposition Modeling (FDM), integrating experimental testing with advanced numerical modeling. Initially, an extensive parametric analysis was conducted to determine the optimal printing conditions, focusing on temperature, speed, and infill density to ensure reliable and repeatable sample fabrication. Subsequently, the study employs an inverse problem-solving approach that combines Digital Image Correlation (DIC) with Finite Element Method Updating (FEMU) to identify the material parameters, specifically Young's modulus and Poisson's ratio.
View Article and Find Full Text PDFPolymers (Basel)
February 2025
Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Ave. Eugenio Garza Sada 2501, Col: Tecnológico, Monterrey 64700, NL, Mexico.
Lattice structures offer unique mechanical properties and versatility in engineering applications, yet existing designs often struggle to balance performance and material efficiency. This study introduces the brachistochrone curve as a novel framework for optimizing lattice geometries, enhancing mechanical behavior while minimizing material usage. Using finite element simulations and compressive testing of 3D-printed samples, we analyzed the mechanical response of brachistochrone-based (B-) and standard lattice structures (diamond, IWP, gyroid, and BCC).
View Article and Find Full Text PDFPolymers (Basel)
February 2025
Équipe de Recherche sur les Processus Innovatifs (ERPI), Université de Lorraine, F-54000 Nancy, France.
The deposition status and profile dimension of deposited filaments have an impact on the quality of the printed parts fabricated by direct ink writing (DIW). Previous works often failed to realize the full quantitative characterizations of the detailed influence of the process parameters on the deposition status and profile dimension. Herein, we predict and analyze the deposition status and profile dimension by proposing an improved three-dimensional (3D) numerical model.
View Article and Find Full Text PDFZhong Nan Da Xue Xue Bao Yi Xue Ban
October 2024
Xiangya Stomatological Hospital and Xiangya School of Stomatology, Central South University; Hunan Engineering Research Center for Digital Intelligence and Personalized Medicine; Hunan 3D Printing Engineering Research Center of Oral Care, Changsha 410008.
Objectives: Maxillary transverse deficiency is a common malocclusion frequently observed in orthodontic clinics. Miniscrew-assisted rapid palatal expansion (MARPE) not only produces greater skeletal expansion but also offers advantages such as simple miniscrew implantation without flap elevation, enhanced patient comfort, and an expanded age range and indications for palatal expansion. However, the fixed connection between the expander and the miniscrews makes the expander difficult to remove, significantly hindering its clinical application.
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