Continuous renal replacement therapy (CRRT) originated from intermittent hemodialysis. Over the past 40 years, its application scope has gradually expanded from the initial treatment of kidney diseases alone to the support of multi-organ functions. As a safe, adequate, and flexible therapeutic modality, CRRT has become one of the main means of treating critically ill patients. Continuous innovation in technology, biomaterials and other technologies provides important driving force for the sustainable development of CRRT. This paper reviews the technological innovation and development of CRRT devices. With continuous technological updates and iteration, CRRT can better adapt to clinical needs. Biofeedback, portability, and intelligence are several directions of the development of CRRT, which can provide more accurate and personalized treatment for critically ill patients in different scenarios.
The deep integration of modern technology and medical development promotes the change of medical and health management environment. As an important part of hospital medical and health decision-making process, the evaluation and access of medical equipment and consumables need scientific evidence-based evaluation system. This paper introduces a new-equipment evaluation model created by the multi-disciplinary evaluation team of West China Hospital of Sichuan University under the guidance of evidence-based ideas and methods. This model is suitable for the Chinese national conditions and easy to operate.
Objective To understand the current situation of the use and cognition of personal protective equipment (PPE) by healthcare workers in the isolation wards (rooms) during the coronavirus disease 2019 epidemic, and provide data support for the country to further optimize the configuration of PPE and carry out more targeted training and supervision. Methods In March 2020, healthcare workers in isolation wards (rooms) in provinces and cities in the country were investigated by filling in a questionnaire about the use of different levels of PPE. Results A total of 6 859 questionnaires were collected from 29 provinces and cities, containing 5 935 valid questionnaires (86.53%). Among them, there were 448 assisting-Hubei medical team members and 5 487 non-assisting-Hubei healthcare workers. The actual use rate (74.22%) and intended use rate (73.14%) of surgical masks in the cleaning areas were the highest. The actual use rate and intended use rate of working caps in potentially contaminated areas and contaminated areas were higher than 90%. There were various combinations of protective articles, and there were significant differences between actual use and intention (P<0.05). Except for the boot covers (single layer) in the cleaning areas, the working caps, isolation clothing and boot covers (double layer) in the potential pollution areas, and the protective face screens, working caps, three-layer shoe covers and single/double/three-layer boot covers in the pollution areas-splashing operations (P>0.05), the actual utilization rates of protective articles of the assisting-Hubei medical team members were generally higher than those of the non-assisting-Hubei healthcare workers (P<0.05). Conclusions The instructions for the use of PPE in different areas and operations should be further refined, and standardized training should be increased. The phenomenon of non-standard use of protective equipment should be reduced, and a safety barrier should be provided to the healthcare workers.
The goal of this paper is to solve the problems of large volume, slow dynamic response and poor intelligent controllability of traditional gait rehabilitation training equipment by using the characteristic that the shear yield strength of magnetorheological fluid changes with the applied magnetic field strength. Based on the extended Bingham model, the main structural parameters of the magnetorheological fluid damper and its output force were simulated and optimized by using scientific computing software, and the three-dimensional modeling of the damper was carried out after the size was determined. On this basis and according to the design and use requirements of the damper, the finite element analysis software was used for force analysis, strength check and topology optimization of the main force components. Finally, a micro magnetorheological fluid damper suitable for wearable rehabilitation training system was designed, which has reference value for the design of lightweight, portable and intelligent rehabilitation training equipment.
Foam sclerotherapy is one of the major therapies for varicose veins in lower limbs. It is important to know the influence factor of foam stability which is beneficial to curative effect. The present experiment explored influence of 9 kinds of driving speed on foam stability when using the method of Tessari. Syringes of 5 mL were chosen to do this experiment which was carried out at the liquid gas ratio of 1:4 and the environment temperature of 20℃. A home-made automatic sclerosing foam preparation equipment was used to prepare the foam. A camera recorded the entire process of foam decay. And foam stability indexes which includes drainage time, half-life, foam half-life volume and the drainage rate curve, were analyzed. The results showed that when driving speed ranged from 100 mm/s to 275 mm/s, foam drainage time and the half-life showed a trend of rising. When the driving velocity was greater than 275 mm/s, the foam drainage time and half-life time reduced a little. The largest drainage time and the half-life differences were 340.0% and 118.8% compared to their minimum value. Meanwhile the pressure increased with the increase of driving speed, so that the solubility of carbon dioxide increased and the foam half-life volume decreased with the increase of the driving speed. It can be concluded that when using the method of Tessari to prepare sclerosing foam, driving speed has a significant effect on its stability. With driving speed increasing, foam decay mechanism changes from gas diffusion to liquid drainage as the main function, so the foam stability increased at first and then decreased later. The foam is relatively more stable at the speed of 275 mm/s, which could be considered as the best driving speed.
ObjectiveTo explore the effect of precise management on life-saving equipment management in Surgical Intensive Care Unit (SICU). MethodsWe actualized precise management in the life-saving equipment management process in March 2014, including precise management control system, precise personnel training, and precise process management. ResultsAfter precise management, the knowledgement of life-saving equipment of the nurses increased from 90.2% (May, 2014) to 98.5%. The number of equipments repaired before (March-May, 2014) and after the management (June-August, 2014) was 65 and 47, respectively; the number of nonstandard management times in nurses after the equipments were used was 98 and 10, respectively. ConclusionPrecise management can drastically improve management efficiency, serviceability rate and service efficiency of life-saving equipment, obviously enhancing the degree of familiarity and using skills of clinical nurses, and ensuring quick and smooth emergency work. It plays an active role in securing severe patients' life.
The refined management of medical equipment archives is the key to its effectiveness. This article shares the practical experience of refined management of medical equipment archives in a tertiary hospital in Chengdu. Medical equipment archives are divided into paper archives and electronic archives, and the process of archive management collection, organization, identification, statistics, storage, and utilization is introduced. The article also discusses the construction, application, and management of archive management systems, aiming to provide a reference for solving the problems faced by refined management of medical equipment archives, achieving comprehensive and effective management of medical equipment archives, and significantly improving the level of archive utilization.
ObjectiveTo strengthen the management of medical equipment and improve the use value of medical equipment by PDCA cycle. MethodsBetween March and June 2014, we introduced PDCA cycle into the management and use of newly-bought equipment.The use of newly-bought arteriosclerosis detector, TCD and ultrasound bone densitometer between March and June 2014 was regarded as the control group (before the implementation of PDCA cycle), and the use of these three kinds of equipment between March and June of 2015(after the implementation of PDCA cycle) was seen as the observation group.By analyzing the status quo through collected information, we drew a fishbone diagram to find out the factors that could influence the use efficiency of medical equipment.Then, corresponding measures were taken for continuous improvement, including adopting revised regulations, training technicians, quantifying work indexes, informatization, changing service mode, and examining and assessing the effect of implementation.Finally, feedback was summarized for the next PDCA cycle. ResultsAfter the implementation of PDCA cycle, the daily check numbers of hospital medical equipment including arteriosclerosis detector, TCD, and ultrasound bone densitometer all improved significantly (P < 0.05).The daily check numbers of those three kinds of equipment after the implementation of PDCA cycle were respectively 48.52±19.72, 32.14±10.14 and 55.59±25.12, while the numbers before were respectively 32.46±20.69, 15.46±10.05 and 29.83±20.20.Moreover, working days, maximum working hours daily, and total working time were also increased after the implementation of PDCA cycle. ConclusionThe application of PDCA cycle can effectively improve the use value of medical equipment, and improve the social benefit and economic benefit.
ObjectiveTo explore a strategy for selecting and evaluating the warranty contract of medical equipment.MethodsBased on the operating costs of the two linear accelerators between 2016 and 2019, we obtained the criticality of medical equipment by using the five indicators, including necessity of maintenance, function, risk, importance, and age of medical equipment, selected the warranty strategy by comparing the cost of key components, and adjusted and optimized the warranty strategy based on the economic benefit assessment during the implementation process of warranty contract.ResultsThe criticalities of the two linear accelerators were both 18 points, and it was recommended to purchase warranty service. By comparing the cost of key components, the annual average maintenance cost of the key components of the two accelerators was lower than the annual warranty cost, so we chose the semi-guaranteed contract. Finally, according to the economic benefit accounting and evaluation in the implementation process of the warranty contracts of the two linear accelerators, the linear accelerator 1 remained unchanged, and the linear accelerator 2 was turned from the semi-guaranteed contract into the full insurance contract when we renewed the warranty contract.ConclusionsThe warranty contract selection and evaluation strategy proposed in this paper has certain guiding significance for the choice of strategy of warranty contract. By choosing the appropriate warranty service scope and warranty strategy, and continuous adjusting and optimizing according to the actual performance of the contract, we can effectively guarantee the operational efficiency of medical equipment, and reduce operating costs simultaneously.