Esta es nuestra última selección de publicaciones y patentes mundiales en inglés sobre Gases Médicos, entre muchas revistas científicas en línea, clasificadas y centradas en gases médicos, CPAP, óxido nitroso, aire medicinal, nebulizador, máscaras de oxígeno, cánula nasal, anestesia, oxímetro, oxígeno hiperbárico, inhalador, ventilador de transporte, botella de oxígeno y concentrador de oxígeno.
Single-Inhaler Proposal for Rescue in Acute Allergic Asthma Crises
Published on 2025-02-27 by Paula Priscila Correia Costa, Stefanie Bressan Waller, H�lef Herbet Ramos, Belarmino Eug�nio Lopes Neto, Wesley Lyeverton Correia Ribeiro @MDPI
Abstract: Allergic asthma is characterized by chronic airway inflammation and recurrent bronchial hyperreactivity, highlighting the need for rapid therapeutic interventions during acute crises. This study aimed to assess the potential of a single-dose administration of the ruthenium nitrosyl complex cis-[Ru(bpy)2(2-MIM)(NO)](PG6)3 (named as FOR811A) as a fast-acting treatment in a murine model of allergic asthma. Female Swiss mice were sensitized with ovalbumin for the induction of asthma and subjected to[...]
Our summary: Assessment of FOR811A as a potential rapid therapeutic intervention in allergic asthma crises using a murine model, showing modulation of Th2 immune response and potential for smooth muscle relaxation.
rescue medication, allergic asthma, fast-acting treatment, single-dose administration rescue medication, allergic asthma, fast-acting treatment, single-dose administration
Publication
Demonstration of Polyethylene Nitrous Oxide Catalytic Decomposition Hybrid Thruster with Dual-Catalyst Bed Preheated by Hydrogen Peroxide
Published on 2025-02-18 by Seungho Lee, Vincent Mario Pierre Ugolini, Eunsang Jung, Sejin Kwon @MDPI
Abstract: Although various studies on nitrous oxide as a prospective green propellant have been recently explored, a polyethylene nitrous oxide catalytic decomposition hybrid thruster was barely demonstrated due to an inordinately high catalyst preheating time of a heater, which led to the destruction of components. Therefore, hydrogen peroxide was used as a preheatant, a substance to preheat, with a dual-catalyst bed. The thruster with polyethylene (PE) as a fuel, N2O as an oxidizer, H2O2 as the preheata[...]
Our summary: Demonstration of Polyethylene Nitrous Oxide Catalytic Decomposition Hybrid Thruster with Dual-Catalyst Bed Preheated by Hydrogen Peroxide. Use of hydrogen peroxide as preheatant in a dual-catalyst bed for a polyethylene nitrous oxide thruster to overcome high catalyst preheating time issues and prevent component destruction. Establishment of optimal preheatant and oxidizer supply times to maintain stable post-combustion chamber pressure and catalyst bed temperature.
Polyethylene, Nitrous Oxide, Catalytic Decomposition, Hybrid Thruster
Publication
A Computational Multiphysics Study of a Satellite Thruster
Published on 2025-02-14 by Marcello A. Lepore, Marzio Piller, Mario Guagliano, Angelo R. Maligno @MDPI
Abstract: This work concerns a study of the thermomechanical behaviour of a commercial thruster for aerospace use. The thruster, operated using a bipropellant liquid mixture, is used for the motion and in-orbit altitude control of small telecommunications satellites. The mixture used in the combustion process is composed of propylene and nitrous oxide, while the wall of the thruster is made of PH15-5 stainless steel. A computational fluid dynamics analysis of conjugate heat transfer determines the spatial[...]
Our summary: Study of thermomechanical behaviour of a satellite thruster using computational multiphysics analysis for aerospace applications.
Computational Multiphysics, Satellite Thruster, Thermomechanical Behaviour, Aerospace Use
Publication
Anesthesia mask
Patent published on the 2025-02-14 in LU under Ref LU505526 by JIANGSU CANCER HOSPITAL [CN] (Song Zhenghuan [cn])
Abstract: The present invention discloses an anesthesia mask and relates to the field of medical masks. The technical solution of the present invention includes a mask body, where a middle portion of the mask body is provided with an air hole, and the air hole is externally connected to an air cylinder; a side wall of the air cylinder is provided with a reflux hole, multiple overflow holes are distributed in a lower portion of the mask body, an inner wall of the mask below the overflow holes is provided w[...]
Our summary: The invention presents an anesthesia mask with improved gas circulation and dehumidification, preventing water droplet formation and enhancing patient comfort.
anesthesia mask, medical masks, gas circulation, dehumidification
Patent
Protocol for a Systematic Review and Meta-Analysis
Published on 2025-02-13 by Zeeshan Ahmad Khan, Dewan Md. Sumsuzzman, Tahiris A. Duran, Ling-Sha Ju, Christoph N. Seubert, Anatoly E. Martynyuk @MDPI
Abstract: Postoperative neurocognitive disorder (PND) is a cognitive decline after general anesthesia and surgery, influenced by preexisting neurodegenerative conditions, stress, and inflammation. Traumatic brain injury (TBI) is linked to a dysregulated stress response, neuroinflammation, and cognitive issues. Patients with TBI often need extracranial surgeries under general anesthesia (GA), which can increase stress, neuroinflammation, and neurodegenerative changes, raising PND risk. We will search datab[...]
Our summary: Protocol for a systematic review and meta-analysis to investigate the relationship between traumatic brain injury, general anesthesia, and postoperative neurocognitive disorder. Data will be extracted manually and using AI-assisted tools, with statistical analyses including mean differences and meta-regression. The study aims to enhance understanding of PND risks and inform clinical practices.
neurocognitive disorder, meta-analysis, traumatic brain injury, general anesthesia
Publication
Mitigating Nitrous Oxide Emission from a Lab-Scale Membrane-Aerated Biofilm Reactor
Published on 2025-02-11 by Andras Nemeth, Eoin Casey, Eoin Syron @MDPI
Abstract: The membrane-aerated biofilm reactor (MABR) is an emerging technology for the biological treatment of wastewaters. It can achieve simultaneous nitrification and denitrification due to anoxic liquid conditions. The counter diffusion of oxygen and nutrients in the biofilm allows for aerobic and anoxic layers, providing conditions where the formation, accumulation and consumption of nitrous oxide can all occur. The microbial processes involved in the production and consumption of N2O are complex, a[...]
Our summary: Mitigating nitrous oxide emission from MABR involves understanding operational factors, such as air flow rate. Investigation on a lab-scale MABR system showed that N2O emissions were most influenced by air flow rate. Minimising air flow rate is an effective strategy to reduce N2O emissions from MABR.
membrane-aerated biofilm reactor, nitrous oxide emission, operational factors, air flow rate
Publication
An inhaler device
Patent published on the 2025-01-22 in EP under Ref EP4494681 by SANDOZ AG [CH] (Ahern David Gregory [gb], Cocker Robin Craig [gb], Christie Ewen Humphrey [gb], Davidson Christopher Iain [gb], Tibbatts James Anthony [gb], Mutti Paul Christopher Edward [gb], Collins James Terence [gb])
Abstract: The present invention relates to inhaler devices, and in particular to devices provided with medicament carriers containing individual pockets or blisters of powdered medicament covered by a lidding sheet such as a lidding foil. A common actuator is provided for controlling movement of an indexing system (712,714) for advancing/indexing a dose and an opening system (790,791) for opening a dose such that progression of the opening system (790,791) is disproportional to progression of the indexing[...]
Our summary: Inhaler device with medicament carriers containing individual pockets of powdered medicament and a common actuator for controlling dose advancement and opening system progression.
inhaler device, medicament carriers, powdered medicament, actuator
Patent
Portable medical ventilator system using portable oxygen
Patent published on the 2024-12-04 in EP under Ref EP4470589 by VENTEC LIFE SYSTEMS INC [US] (Ahmad Samir Saleh [us])
Abstract: A portable medical ventilator using pulse flow from an oxygen concentrator to gain higher oxygen concentration includes a positive pressure source to deliver pressurized air to the patient and a negative pressure source to trigger the oxygen concentrator. A patient circuit attached to a patient interface mask connects the ventilator to the patient. The ventilator includes a controller module that is configured to generate a signal to the negative pressure device to trigger the concentrator to in[...]
Our summary: Portable medical ventilator system using portable oxygen, delivers pressurized air and oxygen pulses to the patient interface, bypassing leaks in the patient circuit.
portable, medical, ventilator, oxygen
Patent
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