The electrotome is a kind of medical surgical operation instrument, which can be applied to incision and electrocoagulation of tissues. From the aspect of circuit structure, high-frequency electrotome is divided into three types, that is, spark type, valve type and semiconductor type. The third one poses its future at miniaturization, high power and intelligentization. As the development of electrotome, some surgical accidents come up, such as electrical leakage, leakage burn and electric appliance security. So more and more attention is paid to the application security of high -frequency electrotome. The test method and some burn and leakage examples of electrotome are introduced and analyzed in the paper.

The cost-benefit analysis of medical equipment investment has been paid much more attention by the hospitals' decision makers. The overall planning should been strengthened before the introduction of equipments and doing a good job in market research contributes to exert equipments' effectiveness. The equipment use and management being strengthened can significantly reduce the costs and improve the efficiency and effectiveness,and furthermore,end-of-life equipment management are also important factors to reduce costs. The investigation is based on the same one among Grade II hospitals in Shanghai in 2007. Referring to the result of similar investigation in 2005,analysis and thinking from different aspects are showed to offer some reference in the future device assets management of hospitals.

Objective:To investigate the medical equipment quality control work which need to be improved in Shanghai medical institutions, and evaluate the acceptability of hospital management team on regional medical equipment quality control checks and standard, so as to seek the corresponding solutions.Methods: The 92 copies of self-designed medical equipment management standard questionnaire was distributed, 76 valid questionnaires were reveived, the received rate of 83%.Results: Only 70% of the people thought the major difficulty is the shortage of medical equipment management staff; 97% thought the quality control has great impact on improvement of medical equipment management. Quality control center determined the annual topics about the problems and needs to form the problem oriented, team based, expert resource collaborative working model. And studied and formulated three specifications and recommendations templates. We carried out a four-month intensive training and received critical acclaim.Conclusion: Medical equipment management staff proposed new requirements. Questionnaire objectively reflected the difficulties in the quality control inspection work, but also pointed out the direction for the future management of the quality of promotion. It provided the thought to improve the quality management and to enhance management methods and training models in the future.

The hydrogen peroxide low temperature plasma sterilization technology solved the problems of thermo-sensitive materials' disinfection and sterilization based on its development and unique characteristics. This paper introduced the researches of clinical application quality control, and showed the hydrogen peroxide low temperature plasma sterilizers were being widely used in hospitals and highly recognized. According to the clinical data and the literatures of the domestic equipment in preliminary application, it could be concluded that the technology maturity of domestic hydrogen peroxide low temperature plasma sterilizers was in a high level. The advantages of using domestic hydrogen peroxide low temperature plasma sterilizers to do disinfection and sterilization included lower cost, safer, faster and non-toxic, etc. Also the management system should be improved and the clinical staff should master the technical essentials, obey the procedures strictly, verify periodically and offer full monitoring to upgrade the quality of sterilization.
Cold Temperature ; Disinfection ; instrumentation ; Hydrogen Peroxide ; chemistry ; Plasma Gases ; chemistry

To improve the manufacturer's medical equipment after-sale service, the fifth Shanghai zone customer satisfaction survey was launched by the end of 2011. The DSA/X-ray equipment was setup as an independent category for the first time. From the survey we can show that the DSA/X-ray equipment's CSI is higher than last year, the customer satisfaction scores of preventive maintenance and service contract are lower than others, and CSI of local brand is lower than imported brand.
Consumer Behavior ; Product Surveillance, Postmarketing ; statistics & numerical data ; Quality Control ; Radiography ; instrumentation ; standards

Objective:To explore the value of metal artifact reduction in oblique sagittal multi-acquisition with variable resonance image combination slab selectivity (MAVRIC-SL) inversion recovery (IR) sequence compared with conventional fast spin-echo (FSE) fat saturation (FS)-T 2WI and proton density weighted imaging (PDWI) on the postoperative review of patients with metal-fixed anterior cruciate ligament reconstruction (ACLR) at 3.0 T MR. Methods:From June to November 2018, 27 patients with metal fixtures in ACLR were prospectively recruited in the First Hospital of China Medical University. The FSE sequences (FS-T 2WI and PDWI) and the MAVRIC-SL IR were performed at 3.0 T MRI system. The maximum artifact slice was selected and ROI was drawn, then the implant and artifact area and the number of artifact-influence slices were recorded. Image signal-to-noise ratio (SNR) was calculated. The degree of image artifacts (artifact degree of spiked ligament staple and its influence on the diagnosis of surrounding structures), measurability (measurability of distance between the upper edge of the staple and the lower edge of the graft entrance on tibia), and other degree of artifacts (whether there were metal artifacts other than implants that affect the observation of other structures within the scanning range) were scored. The Friedman M test and pairwise comparison were used to compare and analyze the quantitative and qualitative data. Results:The differences in artifact area, the number of artifact-influence slices and SNR among FS-T 2WI, PDWI and MAVRIC-SL IR images were statistically significant (all P<0.001). Pairwise comparison analysis suggested that the metal implant artifact area and the number of artifact-influence slices in the MAVRIC-SL IR image were smaller, and the SNR was higher than those of FS-T 2WI and PDWI (all P<0.05 after correction). The differences of the three scores among FS-T 2WI, PDWI and MAVRIC-SL IR were statistically significant (all P<0.001). Pairwise comparison analysis suggested that the degree of image artifacts score of MAVRIC-SL IR sequence was lower, and the measurability and other degree of artifacts scores were higher than FS-T 2WI and PDWI (all P<0.05 after correction). Conclusion:MAVRIC-SL can significantly reduce the metal artifacts and improve image quality in the postoperative MRI review of the patients with metal-fixed ACLR. Therefore, oblique sagittal MAVRIC-SL IR sequence can be used for assisting the diagnosis of conventional FS-T 2WI and PDWI.