This study mainly discusses the contents, methods and characteristics of the collection of operation and maintenance data, as well as the establishment and evaluation methods of the distribution model of the failure time of medical electrical equipment. The distribution models of failure time at three levels of medical electrical equipment are established by linear regression method and goodness of fit test:The first is the device level MTBF distribution model, the second is the failure rate distribution model of the failure mode of key components, the third is the calculation model of the influence coefficient of influence factor on the failure mode of key components. This study presents a method of establishing MTBF segment model and implements a calculation model of influence coefficient varying with time.
Maintenance

This paper introduces a fast repair methods of Versa HD volume-modulated accelerator's high voltage circuit fault:the key points test method. To identify five key points:①Enter maintenance mode to check for AFC deviation; ② The magnetron waveform MI and PFN waveform PFN V are detected on the maintenance terminal board; ③ Detect thyratron waveform; ④ Check the supply voltage of thyratron; ⑤ HT PSU 600 V DC test 600 V normal or not. The waveform or voltage is also measured to efficiently narrow the fault range to find out the cause of the fault, quickly remove the fault.
Maintenance

No abstract available.
Sleep Initiation and Maintenance Disorders*

No abstract available.
Sleep Initiation and Maintenance Disorders*

No abstract available.
Sleep Initiation and Maintenance Disorders*

No abstract available.
Sleep Initiation and Maintenance Disorders*

This paper is maintenance of four kinds of failures of Carestream GC1.5 the workstation used several years to summarize, workstation software, change the host, burn, workstations transmission, and four kinds of failures of the specific case of itemized elimination steps are introduced.
Computers ; standards ; Maintenance ; Software

There were about 50-70% of patients had abnormal central nervous function after the resuscitation of cardiocirculation arrest, which led a burden for society. Oxygen insufficiency caused the bad changes for nervous. In order to prevent the brain from lesions, it must assure the full blood flow and quality of oxygen supply in and after the resuscitation. Relapsed cardiocirculation arrest prevented by the adjustment of homeostasis, intervention of hyperthermalgesia, full supply of energy and oxygen, use of the cell protective drugs, stimulation of growth of nervous cell and treatment of complication after resuscitation
Maintenance ; Brain ; Resuscitation

Described gambro hemodialysis reverse osmosis water treatment system can not supply water due to PC PLC failure, the reasons of failure were analysed, troubleshooting methods and procedures were introduced.
Maintenance ; Renal Dialysis ; instrumentation

Background: Insomnia often responds to the orexin receptor antagonist suvorexant. This study aimed to evaluate the efficacy and adverse events of suvorexant for Chinese patients with primary insomnia over 6 months. Methods: A total of 120 patients with primary insomnia were assigned randomly to two groups that received placebo or suvorexant (40 mg) for 6 months. The primary outcomes were the total sleep time (sTST), time to sleep onset (sTSO), and sleep quality (sQUAL). The secondary outcomes were the Insomnia Severity Index (ISI) score and adverse events. Results: A total of 111 patients completed the study and all of them were included in the final analysis. Suvorexant showed greater efficacy than the placebo in enhancing sTST, sTSO, sQUAL and ISI score at months 1 and 6. Serious adverse events were documented in 2 patients (3.3%) in the suvorexant group and 1 patients (1.7%) in the placebo group. The most common adverse event was somnolence, which occurred in 7 patients (11.7%) in the suvorexant group and 2 patients (3.3%) in the placebo group. No death related to suvorexant treatment was recorded. Conclusions: Suvorexant was efficacious and well-tolerated in a group of Chinese patients with primary insomnia over 6 months.
Sleep Initiation and Maintenance Disorders