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Bioprinting in otolaryngology and airway reconstruction
Published in Ali Khademhosseini, Gulden Camci-Unal, 3D Bioprinting in Regenerative Engineering, 2018
The specialty of otolaryngology-head and neck surgery comprises surgery of the craniofacial composition, ear, nose, throat, neck, and airway. Within this specialty, there are several clinical conditions that lack an ideal treatment. For these challenges, current techniques exhaust the demand and often fall short of the level of precision and customization that are necessary for satisfactory outcomes. Additive manufacturing and bioprinting provide paradigm-shifting potential for treatment options exceeding prior standard therapies.
Additive manufacturing of metallic biomaterials: sustainability aspect, opportunity, and challenges
Published in Journal of Industrial and Production Engineering, 2023
Pralhad Pesode, Shivprakash Barve
Among the most popular metal alloys for surgical instruments is stainless steel. In order to avoid contamination, its antibacterial and anti-staining qualities are crucial. Stainless steel is used in syringes, needles, sensor probes, catheters, otolaryngology ear scope nozzles, orthopedic implants, bone fixations, artificial heart valves, and many more goods in addition to these and many other purposes. orthopedics implants, like as crowns, bridges, and bit splits, may be precisely manufactured via 3D printing to match the anatomy of each patient. A unique surgical instrument composed of stainless steel that could be disassembled and inserted through a tiny hole in the heart was developed for keyhole heart surgery. The precision of 3D printing made this possible. Due to the durability, simplicity of cleaning, and sterility of stainless steel, and simple to maintain, medical institutions prefer 3D printed medical equipment constructed of these materials. In one of the study the biocompatibility of the stainless-steel utilized in 3D printing was evaluated by pre-osteoblast cells. The findings demonstrated that, in comparison to the control, the 3D-printed stainless steel exhibited consistent ATP levels, which is known to promote cellular proliferation. Overall, cell growth adhesion and proliferation were unaffected by the additively manufactured stainless steel.
Free vibration of pseudoelastic NiTi wire: finite element modeling and numerical design
Published in Mechanics of Advanced Materials and Structures, 2022
Liangdi Wang, Jun Wang, Yingjie Xu, Jihong Zhu, Weihong Zhang
In view of the aforementioned salient features, pseudoelastic NiTi alloys are widely used in various engineering fields, such as aerospace crafts, civil constructions, biomedical devices, etc. According to the application scenario, most of the applications are concentrated in the following two aspects: (i) passive damper for the use of energy absorption and vibration reduction, (ii) flexible structure capable of undergoing large recoverable deformation and high stress plateau. In aerospace field, NASA Glenn Research Center has developed a type of tire for Mars rovers using pseudoelastic NiTi wires, which well eliminates the potential issues caused by the temperature-induced pressure changes in the conventional pneumatic tyre. Besides, pseudoelastic NiTi alloys are also widely used for structural damping in civil engineering. For example, researchers have designed the building and bridge structures reinforced with NiTi wires to improve the strength and performance against earthquakes and wind-induced vibration [10]. Biomedical application is another important field of pseudoelastic NiTi alloy, a variety of NiTi-based biomedical devices, such as orthodontics, orthopedics, neurosurgical, general surgery, colorectal surgery, otolaryngology and ophthalmology, have achieved clinical success [11–15]. Among them, one of the most typical example is the intravascular stent. Compared to conventional balloon inflated stainless steel stents, NiTi stents can be compressed to a much smaller size before operation, and gently expand the blood vessels to the appropriate diameter [16].
A bi-objective optimization approach for configuring surgical trays with ergonomic risk consideration
Published in IISE Transactions on Healthcare Systems Engineering, 2019
Ehsan Ahmadi, Dale T. Masel, Diana Schwerha, Seth Hostetler
An empirical study conducted by Stockert and Langerman (2014) revealed that the percent of instruments used across four busy surgical services (Otolaryngology, Plastic Surgery, Bariatric Surgery, and Neurosurgery) is on average 17.1%, ranging from 13.0% to 21.9%. They concluded that improvement of tray configuration may result in immediate and significant cost savings. In another study, Mhlaba et al. (2015) quantified instrument utilization and the cost associated with processing the instruments; i.e., decontamination and packing. The average percent of instrument utilization was 14% and 29% for the plastic soft tissue tray and major laparotomy tray, respectively. They estimated savings of $29,900 per year by eliminating those instruments that were not used in the plastic soft tissue tray alone.