The laparoscopic application of an adjustable silicone gastric band (Lap-Band System, Bioenterics, Carpinteria, CA) (Fig. 1), based on a similar device introduced by Kuzmak in 1986, is gaining widespread acceptance as a gastric restrictive procedure in treatment of morbid obesity. The advantage of an operation that does not open the gastrointestinal tract and can be performed laparoscopically is obvious. This procedure, using the laparoscopic approach , has been performed in our institutions since 1992. The goals of this article are to describe both our standardized surgical technique that minimized the morbidity rate and its results.
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Front Bioeng Biotechnol
December 2024
Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
In this work, a cost-effective, scalable pneumatic silicone actuator array is introduced, designed to dynamically conform to the user's skin and thereby alleviate localised pressure within a prosthetic socket. The appropriate constitutive models for developing a finite element representation of these actuators are systematically identified, parametrised, and validated. Employing this computational framework, the surface deformation fields induced by 270 variations in soft actuator array design parameters under realistic load conditions are examined, achieving predictive accuracies within 70 µm.
View Article and Find Full Text PDFJ Funct Biomater
December 2024
Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada.
Intraocular lenses (IOLs) play a pivotal role in restoring vision following cataract surgery. The evolution of polymeric biomaterials has been central to addressing challenges such as biocompatibility, optical clarity, mechanical stability, and resistance to opacification. This review explores essential requirements for IOL biomaterials, emphasizing their ability to mitigate complications like posterior capsule opacification (PCO) and dysphotopsias while maintaining long-term durability and visual quality.
View Article and Find Full Text PDFMethodsX
December 2024
University of Copenhagen, Department of Plant and Environmental Sciences, Thorvaldsensvej, 40, 1821, Frederiksberg, Denmark.
Iron oxide-impregnated filter papers (FeO) facilitate the study of soil phosphorus (P) desorption, availability and dynamics. However, many studies use homogenized and saturated shaking FeO soil systems, hindering opportunities to resolve environmentally relevant experimental objectives. This study created and evaluated a static microcosm to study soil P dynamics with FeO papers.
View Article and Find Full Text PDFSoft Matter
December 2024
School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287, USA.
To quantify how the viscosities of silicone oil (SO) and liquid metal (LM) relate to emulsion-formation (LM-in-SO SO-in-LM), a process was developed to produce LM pastes with adjustable viscosity and minimal oxide and bubbles. Increased LM viscosity allows greater silicone oil intake and/or intake of higher-viscosity silicone oils.
View Article and Find Full Text PDFCan Prosthet Orthot J
June 2024
Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada.
Background: While waiting to receive a prosthesis, individuals with amputations could benefit from using a temporary training prosthesis to expedite the rehabilitation process and prepare them for subsequent walking with their prosthesis.
Objectives: To design and build a temporary training prosthesis for people with a transtibial amputation.
Methodology: Various temporary training prostheses were designed and simulated using SolidWorks software, followed by fabricating and testing multiple prototypes.
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